/* ========== BLUEPRINT · v0.1.0 ==========
   Palette, grid background, base typography.
   All subsequent phases layer onto these tokens.
*/

:root {
  --bg:        #0d3b4f;
  --bg-dim:    #0a2a3a;
  --panel:     rgba(13, 59, 79, 0.5);
  --panel-2:   rgba(10, 42, 58, 0.8);
  --line:      #4a9fcf;
  --line-dim:  rgba(74, 159, 207, 0.3);
  --text:      #a8e0ff;
  --text-dim:  #6a9fbf;
  --white:     #ffffff;
  --ok:        #78e08f;
  --accent:    #ffd670;
  --warn:      #ff7e5f;

  --font-mono: 'Consolas', 'Courier New', monospace;
  --font-ui:   -apple-system, 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

/* Kill mobile-browser tap-highlight flashes and the default focus ring that
   Chromium keeps drawn around a button after a touch-tap. :focus-visible
   keeps the outline for keyboard users — only the mouse/touch path is
   suppressed. Fixes the stray blue line seen when tapping the top resource
   pills inside the itch.io fullscreen embed on mobile. */
html { -webkit-tap-highlight-color: transparent; }
:focus:not(:focus-visible) { outline: none; }

/* ========== SCROLLBARS (blueprint theme) ========== */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--line) var(--bg-dim);
}
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dim);
  border-left: 1px solid var(--line-dim);
  border-right: 1px solid var(--line-dim);
}
::-webkit-scrollbar-thumb {
  background: var(--line);
  border: 2px solid var(--bg-dim);
  border-radius: 0;
  transition: background 0.15s;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}
::-webkit-scrollbar-thumb:active {
  background: var(--text);
}
::-webkit-scrollbar-corner {
  background: var(--bg-dim);
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-mono);
  background: var(--bg);
  background-image:
    linear-gradient(rgba(100, 200, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(100, 200, 255, 0.06) 1px, transparent 1px);
  background-size: 20px 20px;
  color: var(--text);
}

#app {
  height: 100vh;
  display: grid;
  grid-template-rows: 64px 1fr;
}

/* ========== TOP BAR ========== */
.topbar {
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
  display: flex; align-items: center;
  padding: 0 20px;
  gap: 20px;
}
.logo {
  color: var(--white);
  letter-spacing: 4px;
  font-weight: bold;
  font-size: 14px;
}
.res-bar {
  display: flex; gap: 8px; flex: 1; justify-content: center;
  align-items: stretch;
  /* Hide the horizontal scroll indicator. When a resource pill's value changes
     width or fires its res-click-pulse box-shadow, iOS/Android briefly flash
     their scrollbar indicator (a thin blue line at the edge of the scroll
     container). Scrolling still works where supported; the indicator is just
     suppressed. */
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.res-bar::-webkit-scrollbar { display: none; }
.res {
  display: flex;
  align-items: stretch;
  gap: 8px;
  border: 1px solid var(--line-dim);
  background: rgba(10, 42, 58, 0.7);
  padding: 4px 12px 4px 8px;
  min-width: 104px;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
}
.res:hover {
  border-color: var(--line);
  background: rgba(13, 59, 79, 0.9);
}
.res.clickable { cursor: pointer; user-select: none; }
.res.clickable:hover { border-color: var(--accent); }
.res.clickable:active { transform: translateY(1px); }

.res-auto-btn {
  position: absolute;
  top: 3px;
  right: 4px;
  width: 18px;
  height: 18px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-dim);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: color 0.12s, border-color 0.12s, background 0.12s;
  z-index: 2;
}
.res-auto-btn svg { width: 11px; height: 11px; display: block; }
.res-auto-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.res-auto-btn.on {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(255, 214, 112, 0.14);
  box-shadow: 0 0 0 0 rgba(255, 214, 112, 0.5);
  animation: pickaxe-glow 1.6s ease-in-out infinite;
}
@keyframes pickaxe-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 214, 112, 0.5); }
  50%      { box-shadow: 0 0 0 3px rgba(255, 214, 112, 0); }
}
.res.res-pulse { animation: res-click-pulse 0.28s ease-out; }
@keyframes res-click-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255, 214, 112, 0.5); }
  50%  { box-shadow: 0 0 0 6px rgba(255, 214, 112, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 214, 112, 0); }
}
.res.hidden { display: none; }
.res::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--text);
}
.res[data-res="ore"]::before     { background: var(--text); }
.res[data-res="ingot"]::before   { background: var(--ok); }
.res[data-res="part"]::before    { background: var(--accent); }
.res[data-res="circuit"]::before { background: var(--warn); }
.res[data-res="core"]::before    { background: var(--white); box-shadow: 0 0 8px rgba(255,255,255,0.4); }

.res .body {
  display: flex; flex-direction: column;
  justify-content: center;
  min-width: 0;
}
.res .l {
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 2px;
  line-height: 1;
  margin-bottom: 2px;
}
.res[data-res="ore"]     .l { color: var(--text); }
.res[data-res="ingot"]   .l { color: var(--ok); }
.res[data-res="part"]    .l { color: var(--accent); }
.res[data-res="circuit"] .l { color: var(--warn); }
.res[data-res="core"]    .l { color: var(--white); }

.res .v {
  color: var(--white);
  font-weight: 600;
  font-size: 16px;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
  letter-spacing: 0.5px;
}
.res .rates {
  display: flex; flex-direction: column;
  line-height: 1.05;
  margin-top: 2px;
  gap: 1px;
}
.res .rate {
  font-size: 9px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.5px;
}
.res .rate.prod { color: var(--ok); }
.res .rate.cons { color: var(--warn); }
.res .rate.zero { color: var(--text-dim); opacity: 0.6; }

/* brief flash when value ticks up significantly (class toggled in JS if desired; optional) */
.res.bumped .v {
  animation: res-bump 0.3s ease-out;
}
@keyframes res-bump {
  0%   { color: var(--accent); transform: scale(1); }
  50%  { color: var(--accent); transform: scale(1.04); }
  100% { color: var(--white);  transform: scale(1); }
}
.tabs { display: flex; gap: 6px; }
.tab {
  padding: 5px 12px; font-size: 10px; letter-spacing: 1.5px;
  border: 1px solid var(--line); color: var(--text); cursor: pointer;
}
.tab.on {
  background: var(--ok); color: var(--bg);
  border-color: var(--ok); font-weight: bold;
}
.tab.hidden { display: none; }
/* Tab label variants: full text shown at desktop widths, short abbreviation
   swapped in on narrow screens. Defaults to full; mobile portrait media query
   flips visibility. Keeps the topbar single-row on phones. */
.tab .tab-full { display: inline; }
.tab .tab-short { display: none; }

/* ========== MAIN LAYOUT ========== */
.main-area {
  overflow: hidden;
  position: relative;
}

.view {
  width: 100%;
  height: 100%;
}
.view:not(.active) { display: none; }

.factory-view {
  display: grid;
  grid-template-columns: 1fr 0;
  transition: grid-template-columns 0.4s ease;
}
.factory-view.has-sidebar {
  grid-template-columns: 1fr 280px;
}

.tree-view {
  display: flex !important;
  flex-direction: column;
  position: relative;
}
.tree-view:not(.active) { display: none !important; }

/* ========== MASTERY VIEW ========== */
.mastery-view {
  display: block !important;
  overflow-y: auto;
  padding: 28px 32px;
  /* Drafting grid — matches research + factory sheets. */
  background:
    linear-gradient(rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    var(--bg);
  background-size: 24px 24px, 24px 24px, 100% 100%;
}
.mastery-view:not(.active) { display: none !important; }

.mastery-body {
  max-width: 1100px;
  margin: 0 auto;
}

.mastery-header {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 14px; margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.mastery-title {
  font-family: var(--font-ui);
  color: var(--white);
  font-size: 16px; letter-spacing: 3px; font-weight: 300;
}
.mastery-stats {
  display: flex; gap: 24px; align-items: baseline;
  font-family: var(--font-mono);
}
.mastery-stats .st { text-align: right; }
.mastery-stats .k { font-size: 9px; letter-spacing: 2px; color: var(--text-dim); }
.mastery-stats .v {
  font-size: 22px; color: var(--warn); font-weight: bold;
  font-variant-numeric: tabular-nums;
}
.mastery-stats .v.patents { color: var(--accent); }

.publish-bar {
  position: relative;
  border: 1px solid var(--warn);
  background: rgba(255, 126, 95, 0.08);
  padding: 16px 20px;
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 22px;
  font-family: var(--font-ui);
  gap: 16px;
}
/* Warm-toned corner ticks on the publish bar to match its frame colour. */
.publish-bar .sheet-corner svg { stroke: var(--warn); }
.publish-bar.locked {
  border-color: var(--line);
  background: rgba(13, 59, 79, 0.5);
  opacity: 0.75;
}
.publish-bar .pb-info { flex: 1; min-width: 0; }
.publish-bar .pbt {
  font-size: 12px; letter-spacing: 2px; color: var(--warn);
  font-family: var(--font-mono);
}
.publish-bar.locked .pbt { color: var(--text-dim); }
.publish-bar .pbd {
  font-size: 11px; color: var(--text); margin-top: 4px;
  line-height: 1.4;
}
.publish-bar .pb-gain {
  font-family: var(--font-mono);
  text-align: right;
  margin-right: 8px;
}
.publish-bar .pb-gain .k { font-size: 10px; color: var(--text-dim); letter-spacing: 1.5px; }
.publish-bar .pb-gain .v {
  font-size: 22px; color: var(--accent); font-weight: bold;
  font-variant-numeric: tabular-nums;
}
.publish-btn {
  background: var(--warn);
  color: var(--bg);
  border: 1px solid var(--warn);
  padding: 12px 28px;
  font-family: var(--font-mono);
  font-weight: bold; font-size: 13px;
  letter-spacing: 3px;
  cursor: pointer;
  transition: background 0.12s;
}
.publish-btn:hover { background: var(--white); }
.publish-btn:active { transform: translateY(1px); }
.publish-btn:disabled {
  background: transparent;
  color: var(--text-dim);
  border-color: var(--line);
  cursor: not-allowed;
}
.publish-btn:disabled:hover { background: transparent; }

.section-title {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 2.5px; color: var(--ok);
  margin: 4px 0 12px;
}
.section-title::after {
  content: '';
  flex: 1 1 auto;
  min-width: 16px;
  height: 0;
  border-top: 1px dashed var(--line-dim);
  align-self: center;
}

.patents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}

/* ========== ACCESSIBILITY ========== */
/* Reduce Motion — neutralise all non-functional animation. Progress bars and
   essential state transitions stay (users still need to see progress change),
   but celebrations, particle bursts, screen shake, and pulses go flat. */
body.reduce-motion .celebrate-flash,
body.reduce-motion .celebrate-banner {
  animation: none !important;
  opacity: 1;
}
body.reduce-motion .celebrate-flash { opacity: 0.3; }
body.reduce-motion .celebrate-banner .cb-main { text-shadow: none; }
body.reduce-motion .celebrate-particles { display: none !important; }
body.reduce-motion .screen-shake { animation: none !important; }
body.reduce-motion .blueprint-chip.rarity-mythic { animation: none !important; box-shadow: none !important; }
body.reduce-motion .challenge-banner { animation: none !important; }
body.reduce-motion .challenge-banner .cb-chaos { animation: none !important; }
body.reduce-motion .onboard-target { animation: none !important; box-shadow: 0 0 0 2px var(--accent) !important; }
body.reduce-motion .onboard-card { animation: none !important; }
body.reduce-motion .cp { animation: none !important; opacity: 0 !important; }
body.reduce-motion .patent.affordable { animation: none !important; }
body.reduce-motion .rail-node.affordable .rn-circle { animation: none !important; }

/* Colorblind palette — override the six branch hues with a more hue-distinct
   IBM-safe set (blue · purple · magenta · orange · yellow · teal). Each pair
   is ≥ 25° hue apart and ≥ 20% brightness apart so deuteranopia, protanopia,
   and tritanopia can all disambiguate. */
body.cb-palette .br-speed      { --branch-color: #648fff; } /* blue */
body.cb-palette .br-logistics  { --branch-color: #fe6100; } /* orange */
body.cb-palette .br-yield      { --branch-color: #ffb000; } /* amber */
body.cb-palette .br-automation { --branch-color: #dc267f; } /* magenta */
body.cb-palette .br-efficiency { --branch-color: #785ef0; } /* purple */
body.cb-palette .br-power      { --branch-color: #15b2b2; } /* teal */

/* ========== BLUEPRINTS (per-run modifiers) ========== */
.blueprint-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--accent);
  background: rgba(255, 214, 112, 0.1);
  font-family: var(--font-ui);
  font-size: 10px; letter-spacing: 1.5px;
  color: var(--accent);
  cursor: help;
}
.blueprint-chip .bc-tag { opacity: 0.7; }
.blueprint-chip .bc-name { color: var(--white); font-weight: 700; }
.blueprint-chip.rarity-rare   { border-color: #a89fff; background: rgba(168, 159, 255, 0.12); color: #a89fff; }
.blueprint-chip.rarity-mythic {
  border-color: #ff9ad1; background: rgba(255, 154, 209, 0.12); color: #ff9ad1;
  animation: bp-chip-pulse 2s ease-in-out infinite;
}
@keyframes bp-chip-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 154, 209, 0.4); }
  50%      { box-shadow: 0 0 0 3px rgba(255, 154, 209, 0.15); }
}

.blueprint-modal-bg { z-index: 130; }
.blueprint-modal { min-width: 640px; max-width: 820px; }
.blueprint-modal h3 { color: var(--accent); }
.blueprint-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 14px 0;
}
.blueprint-card {
  background: var(--bg-dim);
  border: 1px solid var(--line);
  padding: 16px;
  font-family: var(--font-ui);
  text-align: left;
  color: var(--text);
  cursor: pointer;
  display: flex; flex-direction: column; gap: 8px;
  min-height: 160px;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.blueprint-card:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--bg-dim));
  transform: translateY(-2px);
}
.blueprint-card.rarity-rare   { border-color: rgba(168, 159, 255, 0.4); }
.blueprint-card.rarity-rare:hover { border-color: #a89fff; background: rgba(168, 159, 255, 0.08); }
.blueprint-card.rarity-mythic { border-color: rgba(255, 154, 209, 0.5); }
.blueprint-card.rarity-mythic:hover { border-color: #ff9ad1; background: rgba(255, 154, 209, 0.1); }
.blueprint-card .bp-rarity {
  font-size: 9px; letter-spacing: 2px;
  color: var(--text-dim); font-weight: 700;
}
.blueprint-card.rarity-rare   .bp-rarity { color: #a89fff; }
.blueprint-card.rarity-mythic .bp-rarity { color: #ff9ad1; }
.blueprint-card .bp-name {
  font-size: 16px; letter-spacing: 2px; font-weight: 700;
  color: var(--white);
}
.blueprint-card .bp-desc {
  font-size: 11px; color: var(--text); line-height: 1.5;
  flex: 1;
}
.blueprint-card .bp-desc b { color: var(--accent); }
.blueprint-card .bp-uses {
  font-size: 9px; letter-spacing: 1px;
  color: var(--text-dim); font-family: var(--font-mono);
}

@media (max-width: 720px) {
  .blueprint-modal { min-width: 0; width: calc(100vw - 32px); }
  .blueprint-grid { grid-template-columns: 1fr; }
  .blueprint-card { min-height: 0; }
  .blueprint-chip { font-size: 8px; padding: 3px 6px; }
}

/* ========== CHALLENGE MODES ========== */
.section-title .section-dim { color: var(--text-dim); font-weight: 400; }
.challenges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.challenge-card {
  border: 1px solid var(--line);
  background: rgba(13, 59, 79, 0.55);
  padding: 14px 16px;
  font-family: var(--font-ui);
  display: flex; flex-direction: column;
  gap: 8px;
  position: relative;
}
.challenge-card.active {
  border-color: var(--warn);
  background: rgba(255, 126, 95, 0.08);
  box-shadow: 0 0 0 1px rgba(255, 126, 95, 0.25);
}
.challenge-card.completed {
  border-color: var(--ok);
  background: rgba(120, 224, 143, 0.06);
}
.challenge-card .ch-head {
  display: flex; justify-content: space-between; align-items: baseline;
}
.challenge-card .ch-name {
  font-size: 13px; letter-spacing: 2px; font-weight: 700;
  color: var(--white);
}
.challenge-card.completed .ch-name { color: var(--ok); }
.challenge-card.active    .ch-name { color: var(--warn); }
.challenge-card .ch-status {
  font-size: 9px; letter-spacing: 2px;
  color: var(--text-dim);
}
.challenge-card .ch-status.active    { color: var(--warn); }
.challenge-card .ch-status.completed { color: var(--ok); }
/* v0.9.8 — locked challenge cards. Early-game players see the full grid
   with publish-gated challenges rendered dim + dashed so they know what's
   coming. The UNLOCKS AFTER FIRST PUBLISH chip replaces the start button. */
.challenge-card.locked {
  border-style: dashed;
  opacity: 0.55;
}
.challenge-card.locked .ch-name { color: var(--text-dim); }
.challenge-card .ch-status.locked { color: var(--text-dim); }
.challenge-card .ch-lock-tag {
  font-size: 9px; letter-spacing: 1.5px;
  color: var(--text-dim); font-weight: 700;
  font-family: var(--font-mono);
}
.challenge-card .ch-desc {
  font-size: 11px; color: var(--text); line-height: 1.5;
}
.challenge-card .ch-goal {
  font-size: 10px; letter-spacing: 1px;
  color: var(--accent);
  font-family: var(--font-mono);
}
/* v0.9.7 — scaled-goal callout. Shows "(now N)" next to the original goal
   text when the player's lifetime patents have bumped the effective goal
   above the baseline. White + bold so it pops against the surrounding
   gold goal line. */
.challenge-card .ch-goal-scaled {
  color: var(--white);
  font-weight: 700;
  margin-left: 4px;
}
.challenge-card .ch-reward {
  font-size: 10px; color: var(--ok);
  font-family: var(--font-mono);
  padding-top: 6px;
  border-top: 1px dashed var(--line-dim);
}
.challenge-card .ch-reward-label {
  color: var(--text-dim); margin-right: 6px;
}
.challenge-card .ch-actions {
  display: flex; justify-content: flex-end; gap: 6px;
  margin-top: 4px;
}
.challenge-card .ch-btn {
  font-family: var(--font-ui);
  font-size: 10px; letter-spacing: 2px; font-weight: 700;
  padding: 6px 14px;
  cursor: pointer;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  transition: background 0.12s, color 0.12s;
}
.challenge-card .ch-btn.start:hover {
  background: var(--accent); color: #1b1200;
}
.challenge-card .ch-btn:disabled {
  border-color: var(--line-dim); color: var(--text-dim);
  cursor: not-allowed;
}
.challenge-card .ch-btn.abandon {
  border-color: var(--warn); color: var(--warn);
}
.challenge-card .ch-btn.abandon:hover {
  background: var(--warn); color: #1b0a00;
}
.challenge-card .ch-done-tag {
  font-size: 10px; letter-spacing: 2px;
  color: var(--ok); font-weight: 700;
}

/* Active-run banner pinned to the top of the factory view. */
.challenge-banner {
  position: fixed;
  left: 0; right: 0;
  top: 0;
  z-index: 55;
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  padding: 8px 14px;
  background: linear-gradient(90deg, rgba(255, 126, 95, 0.15), rgba(255, 126, 95, 0.28), rgba(255, 126, 95, 0.15));
  border-bottom: 1px solid var(--warn);
  font-family: var(--font-ui);
  font-size: 11px; letter-spacing: 1.5px;
  color: var(--warn);
  backdrop-filter: blur(4px);
  animation: cb-slide 0.3s ease-out;
}
@keyframes cb-slide {
  from { transform: translateY(-100%); opacity: 0; }
  to   { transform: translateY(0);     opacity: 1; }
}
.challenge-banner .cb-tag     { font-weight: 700; }
.challenge-banner .cb-name    { color: var(--white); font-weight: 700; letter-spacing: 2px; }
.challenge-banner .cb-constraint { color: var(--warn); opacity: 0.8; }
.challenge-banner .cb-timer   {
  font-family: var(--font-mono); color: var(--accent);
  background: rgba(0,0,0,0.3); padding: 3px 8px;
  border: 1px solid var(--accent);
}
.challenge-banner .cb-timer.ok {
  color: var(--ok); border-color: var(--ok);
}
.challenge-banner .cb-chaos {
  font-family: var(--font-mono);
  color: var(--warn);
  background: rgba(255, 126, 95, 0.15);
  padding: 3px 8px;
  border: 1px solid var(--warn);
  animation: chaos-pulse 0.8s ease-in-out infinite;
}
@keyframes chaos-pulse {
  0%, 100% { opacity: 0.85; }
  50%      { opacity: 1;    }
}
.challenge-banner .cb-progress {
  color: var(--ok); font-family: var(--font-mono);
}
.challenge-banner .cb-abandon {
  font-family: var(--font-ui);
  font-size: 9px; letter-spacing: 2px; font-weight: 700;
  padding: 4px 10px;
  border: 1px solid var(--warn);
  background: transparent;
  color: var(--warn);
  cursor: pointer;
}
.challenge-banner .cb-abandon:hover { background: var(--warn); color: #1b0a00; }
/* When banner is present, push #app down so topbar+content clear it. */
body:has(.challenge-banner) #app {
  height: calc(100vh - 36px);
  margin-top: 36px;
}
@media (max-width: 720px) {
  .challenge-banner {
    font-size: 9px; gap: 6px; padding: 6px 8px;
  }
  .challenge-banner .cb-name { letter-spacing: 1px; }
  body:has(.challenge-banner) #app {
    height: calc(100vh - 46px);
    margin-top: 46px;
  }
}
.patent {
  border: 1px solid var(--line);
  background: rgba(13, 59, 79, 0.5);
  padding: 12px 14px;
  font-family: var(--font-ui);
  position: relative;
  cursor: pointer;
  text-align: left;
  transition: border-color 0.12s, background 0.12s, box-shadow 0.12s;
}
.patent:hover:not(.owned):not(.locked):not(.unaffordable):not(.maxed) {
  border-color: var(--accent);
  background: rgba(255, 214, 112, 0.06);
}
.patent.affordable {
  border-color: var(--accent);
  animation: tier-unlock-glow 1.8s ease-in-out infinite;
}
.patent.owned, .patent.maxed {
  border-color: var(--ok);
  background: rgba(120, 224, 143, 0.06);
}
.patent.locked { opacity: 0.4; cursor: not-allowed; }
.patent.unaffordable { opacity: 0.7; cursor: not-allowed; }
.patent .ptitle {
  font-size: 12px; color: var(--white); font-weight: 600;
  letter-spacing: 1px;
  padding-right: 54px;
}
.patent.owned .ptitle, .patent.maxed .ptitle { color: var(--ok); }
.patent .pdesc {
  font-size: 10.5px; color: var(--text); line-height: 1.5;
  margin: 6px 0 10px;
}
.patent .pcost {
  font-family: var(--font-mono);
  font-size: 10px; color: var(--accent);
  letter-spacing: 1px;
}
.patent.owned .pcost, .patent.maxed .pcost { color: var(--ok); }
.patent.unaffordable .pcost { color: var(--warn); }
.patent .plevel {
  position: absolute; top: 10px; right: 12px;
  font-family: var(--font-mono);
  font-size: 10px; color: var(--text-dim);
  letter-spacing: 1px;
}
.patent.owned .plevel, .patent.maxed .plevel { color: var(--ok); }
.patent .preq {
  font-family: var(--font-mono);
  font-size: 9px; color: var(--warn);
  margin-top: 6px; letter-spacing: 1px;
}

.auto-section {
  border: 1px solid var(--line);
  background: rgba(13, 59, 79, 0.5);
  padding: 14px 18px;
  margin-bottom: 18px;
}
.auto-section .section-title { margin-bottom: 12px; }
.auto-row {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 0;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--text);
}
.auto-row label {
  display: flex; align-items: center; gap: 8px;
  cursor: pointer;
  font-family: var(--font-mono);
  letter-spacing: 1px;
  color: var(--white);
  font-size: 11px;
  min-width: 150px;
}
.auto-row input[type="checkbox"] {
  accent-color: var(--accent);
  cursor: pointer;
}
.auto-row .auto-hint {
  color: var(--text-dim);
  font-size: 11px;
}
.auto-row .auto-num {
  width: 70px;
  background: var(--bg-dim);
  border: 1px solid var(--line);
  color: var(--accent);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  padding: 4px 6px;
  text-align: right;
}
.auto-row .auto-num:focus {
  outline: none;
  border-color: var(--accent);
}

.mastery-intro {
  border: 1px dashed var(--line);
  padding: 20px 24px;
  background: rgba(10, 42, 58, 0.4);
  font-family: var(--font-ui);
  font-size: 12px; color: var(--text);
  line-height: 1.6;
  margin-bottom: 20px;
}
.mastery-intro h4 {
  font-family: var(--font-mono);
  font-size: 11px; color: var(--warn); letter-spacing: 2px;
  margin-bottom: 8px;
}
.mastery-intro b { color: var(--accent); }

/* ========== STATS VIEW ========== */
.stats-view {
  display: block !important;
  overflow-y: auto;
  padding: 28px 32px;
  /* Drafting grid — matches research + factory + mastery sheets. */
  background:
    linear-gradient(rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    var(--bg);
  background-size: 24px 24px, 24px 24px, 100% 100%;
}
.stats-view:not(.active) { display: none !important; }

.stats-body {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}
.stats-block {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 18px 22px;
  position: relative;
}
.stats-block h3 {
  display: flex; align-items: center; gap: 10px;
  font-size: 10px; letter-spacing: 2.5px; color: var(--ok);
  margin: 0 0 14px;
}
.stats-block h3::after {
  content: '';
  flex: 1 1 auto;
  min-width: 16px;
  height: 0;
  border-top: 1px dashed var(--line-dim);
  align-self: center;
}
.stats-block .rows {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px 22px;
}
.stats-block .r {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--font-ui);
  font-size: 12px;
  padding: 4px 0;
  border-bottom: 1px dashed var(--line-dim);
}
.stats-block .r .k {
  color: var(--text-dim); letter-spacing: 1px; text-transform: uppercase;
  font-size: 10px;
}
.stats-block .r .v {
  color: var(--white); font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.stats-block .r .v.hi { color: var(--accent); }
.stats-block .r .v.ok { color: var(--ok); }

/* Charts inside the TREND stats block. */
.stats-chart {
  background: var(--bg-dim);
  border: 1px solid var(--line-dim);
  padding: 12px 14px;
  margin-top: 12px;
}
.stats-chart:first-child { margin-top: 0; }
.stats-chart .chart-head {
  display: flex; align-items: baseline; flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 8px;
}
.stats-chart h4 {
  font-size: 10px; letter-spacing: 2px; color: var(--text);
  margin: 0;
}
.stats-chart .chart-sub {
  font-size: 9px; letter-spacing: 1.5px; color: var(--text-dim);
  text-transform: uppercase;
}
.stats-chart .chart-legend {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-left: auto;
  font-size: 10px; letter-spacing: 1px;
  color: var(--text-dim);
}
.stats-chart .chart-legend-item {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--font-mono);
}
.stats-chart .chart-swatch {
  display: inline-block; width: 10px; height: 2px;
}
.stats-chart .chart-svg {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 1;
  display: block;
}
.stats-chart .chart-empty {
  padding: 32px 0;
  text-align: center;
  color: var(--text-dim);
  font-family: var(--font-ui);
  font-size: 11px; letter-spacing: 1.5px;
}

/* ========== ACHIEVEMENTS TAB ========== */
.achievements-view {
  display: block !important;
  overflow-y: auto;
  padding: 28px 32px;
  /* Drafting grid — matches research + factory + mastery + stats sheets. */
  background:
    linear-gradient(rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    var(--bg);
  background-size: 24px 24px, 24px 24px, 100% 100%;
}

/* ========== EXHIBITIONS VIEW (v0.8.0 · endgame) ========== */
.exhibitions-view {
  display: block !important;
  overflow-y: auto;
  padding: 28px 32px;
  background:
    linear-gradient(rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    var(--bg);
  background-size: 24px 24px, 24px 24px, 100% 100%;
}
.exhibitions-view:not(.active) { display: none !important; }
.exhibitions-body {
  max-width: 1100px;
  margin: 0 auto;
}
.exh-header {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 14px; margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
  gap: 12px; flex-wrap: wrap;
}
.exh-title {
  font-family: var(--font-ui);
  color: var(--white);
  font-size: 16px; letter-spacing: 3px; font-weight: 300;
}
.exh-stats { display: flex; gap: 20px; align-items: baseline; font-family: var(--font-mono); }
.exh-stats .st { text-align: right; }
.exh-stats .k { font-size: 9px; letter-spacing: 2px; color: var(--text-dim); }
.exh-stats .v {
  font-size: 20px; color: var(--white); font-weight: bold;
  font-variant-numeric: tabular-nums;
}
.exh-stats .v.lm { color: var(--accent); }

.exh-locked {
  border: 1px dashed var(--line);
  padding: 28px 32px;
  background: rgba(10, 42, 58, 0.4);
  color: var(--text);
  font-family: var(--font-ui);
  line-height: 1.6;
}
.exh-locked h3 {
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 3px; color: var(--warn);
  margin-bottom: 12px;
}
.exh-locked p { margin-bottom: 10px; }
.exh-locked b { color: var(--accent); }

.exh-active {
  position: relative;
  border: 1px solid var(--accent);
  background: rgba(255, 214, 112, 0.06);
  padding: 16px 20px;
  margin-bottom: 22px;
}
.exh-active-head {
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 2px; color: var(--accent);
  margin-bottom: 8px;
}
.exh-active-desc {
  font-family: var(--font-ui);
  font-size: 12px; color: var(--text);
  line-height: 1.5; margin-bottom: 8px;
}
.exh-active-goal {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 1px; color: var(--text-dim);
  margin-bottom: 10px;
}

.exh-pool {
  position: relative;
  border: 1px dashed var(--line);
  padding: 16px 20px;
  margin-bottom: 22px;
}
.exh-pool-head {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 2px; color: var(--ok);
  margin-bottom: 12px;
}
.exh-pool-hint {
  font-family: var(--font-ui);
  font-size: 11px; color: var(--text-dim);
  margin-bottom: 12px;
}
.exh-pool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}
.exh-card {
  border: 1px solid var(--line);
  background: rgba(13, 59, 79, 0.5);
  padding: 12px 14px;
  display: flex; flex-direction: column; gap: 6px;
}
.exh-card-name {
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 2px; color: var(--accent);
}
.exh-card-desc {
  font-family: var(--font-ui);
  font-size: 11px; color: var(--text);
  line-height: 1.5;
}
.exh-card-goal {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 1px; color: var(--ok);
}
.exh-card-meta {
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 1px; color: var(--text-dim);
}
.exh-card .btn { margin-top: auto; align-self: flex-start; }

.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 10px;
}
.archive-card {
  position: relative;
  border: 1px solid var(--line);
  background: rgba(13, 59, 79, 0.5);
  padding: 12px 14px;
  display: flex; flex-direction: column; gap: 6px;
  transition: border-color 0.12s, background 0.12s;
}
.archive-card.owned {
  border-color: var(--ok);
  background: rgba(120, 224, 143, 0.08);
}
.archive-card.affordable { border-color: var(--accent); }
.archive-card.unaffordable { opacity: 0.55; border-style: dashed; }
.archive-name {
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 2px; color: var(--accent);
}
.archive-card.owned .archive-name { color: var(--ok); }
.archive-desc {
  font-family: var(--font-ui);
  font-size: 11px; color: var(--text);
  line-height: 1.5;
}
.archive-cost {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 1px; color: var(--accent);
}
.archive-card.owned .archive-cost { color: var(--ok); }
.archive-card.unaffordable .archive-cost { color: var(--warn); }
.archive-card .btn { margin-top: auto; align-self: flex-start; }
.achievements-view:not(.active) { display: none !important; }

.achievements-body {
  max-width: 1100px;
  margin: 0 auto;
}

.ach-page-header {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 14px; margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
  gap: 12px;
  flex-wrap: wrap;
}
.ach-page-title {
  font-family: var(--font-ui);
  color: var(--white);
  font-size: 16px; letter-spacing: 3px; font-weight: 300;
}
.ach-page-stats {
  display: flex; gap: 12px; align-items: center;
  font-family: var(--font-mono);
}
.ach-page-progress {
  color: var(--accent);
  font-size: 18px;
  letter-spacing: 1.5px;
  font-variant-numeric: tabular-nums;
  font-weight: bold;
}
.ach-page-new {
  background: var(--warn);
  color: var(--bg);
  font-weight: bold;
  font-size: 11px;
  letter-spacing: 1px;
  padding: 3px 10px;
  animation: ach-new-pulse 1.4s ease-in-out infinite;
}
@keyframes ach-new-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 126, 95, 0.6); }
  50%      { box-shadow: 0 0 0 6px rgba(255, 126, 95, 0); }
}

.ach-page-body { padding: 0; }

/* Small "!" badge on the ACHIEVEMENTS / RESEARCH tab itself */
.tab .tab-badge {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 6px;
  background: var(--warn);
  color: var(--bg);
  font-weight: bold;
  font-size: 9px;
  letter-spacing: 0;
  border-radius: 2px;
  animation: ach-new-pulse 1.4s ease-in-out infinite;
}
/* Numeric count variant — steady, not pulsing, in the accent color */
.tab .tab-badge.tab-badge-count {
  background: var(--accent);
  animation: none;
}

.ach-group {
  position: relative;
  margin-bottom: 14px;
  padding: 14px 16px 16px;
  border: 1px solid var(--line);
  background: rgba(13, 59, 79, 0.3);
}
.ach-group:last-child { margin-bottom: 0; }
.ach-group-label {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 2.5px;
  color: var(--ok);
  margin: 0 0 12px;
}
.ach-group-label::after {
  content: '';
  flex: 1 1 auto;
  min-width: 16px;
  height: 0;
  border-top: 1px dashed var(--line-dim);
  align-self: center;
}
.ach-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 8px;
}
.ach {
  border: 1px solid var(--line);
  background: rgba(13, 59, 79, 0.5);
  padding: 10px 12px;
  font-family: var(--font-ui);
  transition: border-color 0.12s, background 0.12s;
  position: relative;
}
.ach.earned {
  border-color: var(--ok);
  background: rgba(120, 224, 143, 0.08);
}
.ach.locked {
  opacity: 0.5;
  border-style: dashed;
}
.ach.new {
  border-color: var(--accent);
  background: rgba(255, 214, 112, 0.1);
  animation: ach-card-pulse 1.8s ease-in-out infinite;
  cursor: pointer;
}
.ach.new:hover { background: rgba(255, 214, 112, 0.18); }
@keyframes ach-card-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 214, 112, 0.3); }
  50%      { box-shadow: 0 0 0 4px rgba(255, 214, 112, 0); }
}
.ach-new-dot {
  position: absolute;
  top: -6px; right: -6px;
  width: 18px; height: 18px;
  background: var(--warn);
  color: var(--bg);
  font-family: var(--font-mono);
  font-weight: bold;
  font-size: 12px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  z-index: 2;
  transition: transform 0.12s, background 0.12s;
  box-shadow: 0 0 0 2px var(--bg);
}
.ach-new-dot:hover {
  background: var(--white);
  transform: scale(1.15);
}
.ach .ach-name {
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--white);
  font-weight: 600;
  margin-bottom: 4px;
}
.ach.earned .ach-name { color: var(--ok); }
.ach.new .ach-name    { color: var(--accent); }
.ach.locked .ach-name { color: var(--text-dim); }
.ach .ach-desc {
  font-size: 10.5px;
  color: var(--text);
  line-height: 1.45;
  margin-bottom: 6px;
}
.ach.locked .ach-desc { color: var(--text-dim); }
.ach .ach-progress-wrap {
  margin: 8px 0 10px;
}
.ach .ach-progress-bar {
  position: relative;
  height: 4px;
  background: rgba(74, 159, 207, 0.15);
  border: 1px solid var(--line-dim);
  overflow: hidden;
}
.ach .ach-progress-fill {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: var(--accent);
  transition: width 0.35s ease-out;
  min-width: 0;
}
.ach.earned .ach-progress-fill { background: var(--ok); }
.ach.new    .ach-progress-fill { background: var(--accent); }
.ach .ach-progress-text {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
  margin-top: 4px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.ach.earned .ach-progress-text { color: var(--ok); }
.ach.new    .ach-progress-text { color: var(--accent); }
.ach .ach-bonus {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.5px;
  color: var(--text-dim);
  padding: 3px 6px;
  background: rgba(13, 59, 79, 0.6);
  border-left: 2px solid var(--line);
  display: inline-block;
}
.ach .ach-bonus.active {
  color: var(--ok);
  border-left-color: var(--ok);
  background: rgba(120, 224, 143, 0.08);
}
.ach.new .ach-bonus.active { color: var(--accent); border-left-color: var(--accent); background: rgba(255, 214, 112, 0.08); }

/* Machine-slot info is now shown via .toast popups — no dedicated tooltip element. */

/* ========== SETTINGS MODAL ========== */
.settings-group {
  border: 1px solid var(--line-dim);
  padding: 12px 14px;
  margin-bottom: 10px;
}
.settings-group h4 {
  display: flex; align-items: center; gap: 10px;
  font-size: 10px; letter-spacing: 2px;
  color: var(--ok);
  margin: 0 0 10px;
  font-family: var(--font-mono);
}
.settings-group h4::after {
  content: '';
  flex: 1 1 auto;
  min-width: 16px;
  height: 0;
  border-top: 1px dashed var(--line-dim);
  align-self: center;
}

/* Small backup-currency pill shown next to the EXPORT button in settings. */
.last-backup-pill {
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 1.5px;
  color: var(--text-dim);
  padding: 2px 8px;
  border: 1px dashed var(--line-dim);
  margin-right: 8px;
  white-space: nowrap;
}
.last-backup-pill.stale { color: var(--warn); border-color: var(--warn); }
.last-backup-pill.fresh { color: var(--ok); border-color: var(--ok); }

/* Version footer at the bottom of the settings modal. */
.settings-footer {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line-dim);
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 2px;
  color: var(--text-dim);
}
.settings-footer .sf-brand { color: var(--accent); }
.settings-footer .sf-version {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px dashed var(--line-dim);
  padding-bottom: 1px;
}
.settings-footer .sf-version:hover { color: var(--accent); border-color: var(--accent); }
.settings-row {
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-ui); font-size: 12px;
  padding: 6px 0;
  color: var(--text);
  gap: 12px;
}
.settings-row .label { color: var(--text); }
.settings-row input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
}
.settings-row .val {
  font-family: var(--font-mono);
  color: var(--accent);
  min-width: 44px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.settings-row .seg {
  display: flex; gap: 4px;
}
.settings-row .seg button {
  background: transparent; border: 1px solid var(--line);
  color: var(--text); font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 1px;
  padding: 4px 10px;
  cursor: pointer;
}
.settings-row .seg button.on {
  background: var(--ok); color: var(--bg); border-color: var(--ok);
  font-weight: bold;
}

/* ========== TOAST NOTIFICATIONS ========== */
.toast-stack {
  position: fixed;
  top: 72px;
  right: 24px;
  display: flex; flex-direction: column;
  gap: 8px;
  z-index: 60;
  pointer-events: none;
}
.toast {
  border: 1px solid var(--accent);
  background: rgba(13, 59, 79, 0.95);
  padding: 10px 16px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--white);
  letter-spacing: 0.3px;
  line-height: 1.5;
  min-width: 240px;
  max-width: 340px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  cursor: pointer;
  pointer-events: auto;
  animation: toast-in 0.3s ease-out, toast-out 0.4s ease-in 3.6s forwards;
}
.toast:hover { border-color: var(--white); }
.toast b    { color: var(--accent); }
.toast .ok   { color: var(--ok); }
.toast .warn { color: var(--warn); }
.toast .dim  { color: var(--text-dim); font-size: 11px; }
.toast.ok { border-color: var(--ok); }
.toast.ok b { color: var(--ok); }
@keyframes toast-in  { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toast-out { to   { opacity: 0; transform: translateX(16px); } }

/* ========== ONBOARDING ========== */
.onboard-card {
  position: fixed;
  left: 50%; bottom: 28px;
  transform: translateX(-50%);
  z-index: 90;
  width: min(520px, calc(100vw - 32px));
  background: linear-gradient(180deg, rgba(18, 70, 92, 0.98), rgba(8, 30, 42, 0.98));
  border: 1px solid var(--accent);
  box-shadow: 0 0 0 1px rgba(255, 214, 112, 0.15), 0 18px 40px rgba(0,0,0,0.6);
  padding: 14px 18px 16px;
  font-family: var(--font-ui);
  animation: ob-in 0.35s cubic-bezier(.2,.9,.3,1);
}
.onboard-card .ob-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 6px;
}
.onboard-card .ob-step {
  font-size: 10px; letter-spacing: 2px;
  color: var(--accent); font-weight: 700;
}
.onboard-card .ob-skip {
  background: transparent; border: 1px solid var(--line);
  color: var(--text-dim);
  font-family: var(--font-ui);
  font-size: 10px; letter-spacing: 1.5px;
  padding: 4px 8px; cursor: pointer;
}
.onboard-card .ob-skip:hover { color: var(--text); border-color: var(--text-dim); }
.onboard-card .ob-title {
  font-size: 14px; letter-spacing: 2px;
  color: var(--white); font-weight: 700;
  margin-bottom: 6px;
}
.onboard-card .ob-body {
  font-size: 12px; color: var(--text);
  line-height: 1.55; margin-bottom: 12px;
}
.onboard-card .ob-body b { color: var(--accent); }
.onboard-card .ob-actions { display: flex; justify-content: flex-end; gap: 8px; }
.onboard-card .ob-next {
  background: var(--accent); color: #1b1200;
  border: 0; padding: 8px 18px;
  font-family: var(--font-ui);
  font-size: 11px; letter-spacing: 2px; font-weight: 700;
  cursor: pointer;
  transition: filter 0.15s;
}
.onboard-card .ob-next:hover { filter: brightness(1.1); }
@keyframes ob-in {
  from { opacity: 0; transform: translate(-50%, 20px); }
  to   { opacity: 1; transform: translate(-50%, 0);    }
}
/* Pulsing outline on the element the current step is pointing at. */
.onboard-target {
  position: relative;
  animation: ob-target-pulse 1.4s ease-in-out infinite;
  z-index: 5;
}
@keyframes ob-target-pulse {
  0%, 100% { box-shadow: 0 0 0 2px var(--accent), 0 0 16px rgba(255, 214, 112, 0.5); }
  50%      { box-shadow: 0 0 0 4px var(--accent), 0 0 28px rgba(255, 214, 112, 0.8); }
}
@media (max-width: 720px) {
  .onboard-card { bottom: 16px; padding: 12px 14px 14px; }
  .onboard-card .ob-title { font-size: 12px; letter-spacing: 1.5px; }
  .onboard-card .ob-body  { font-size: 11px; }
}

/* ========== CELEBRATIONS (big-moment feedback) ========== */
/* Full-screen radial flash used for prestige / publish / tier-up / milestone. */
.celebrate-flash {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 120;
  opacity: 0;
  animation: cel-flash 1.6s ease-out forwards;
}
.celebrate-flash.prestige {
  background: radial-gradient(circle at center, rgba(255, 214, 112, 0.65) 0%, rgba(255, 214, 112, 0) 60%);
}
.celebrate-flash.publish {
  background: radial-gradient(circle at center, rgba(120, 200, 255, 0.7) 0%, rgba(120, 200, 255, 0) 60%);
}
.celebrate-flash.tier {
  background: radial-gradient(circle at center, rgba(128, 255, 180, 0.55) 0%, rgba(128, 255, 180, 0) 55%);
}
.celebrate-flash.milestone {
  background: radial-gradient(circle at center, rgba(255, 120, 180, 0.55) 0%, rgba(255, 120, 180, 0) 60%);
}
@keyframes cel-flash {
  0%   { opacity: 0; }
  18%  { opacity: 1; }
  100% { opacity: 0; }
}

/* Big centred banner text. */
.celebrate-banner {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none; z-index: 121;
  font-family: var(--font-ui);
  animation: cel-banner 2.2s ease-out forwards;
}
.celebrate-banner .cb-inner {
  text-align: center;
  text-transform: uppercase;
}
.celebrate-banner .cb-kind {
  font-size: 12px; letter-spacing: 5px;
  color: var(--accent);
  margin-bottom: 6px;
  opacity: 0.9;
}
.celebrate-banner .cb-main {
  font-size: 48px; letter-spacing: 4px;
  color: var(--white); font-weight: 700;
  text-shadow: 0 0 20px rgba(255, 214, 112, 0.8),
               0 0 40px rgba(255, 214, 112, 0.4);
}
.celebrate-banner .cb-sub {
  font-size: 14px; letter-spacing: 3px;
  color: var(--text); margin-top: 10px;
}
@keyframes cel-banner {
  0%   { opacity: 0; transform: scale(0.7); }
  15%  { opacity: 1; transform: scale(1);   }
  75%  { opacity: 1; transform: scale(1);   }
  100% { opacity: 0; transform: scale(1.15);}
}

/* Particle field — one burst of N divs flying outward. */
.celebrate-particles {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 122;
  overflow: hidden;
}
.celebrate-particles .cp {
  position: absolute;
  left: 50%; top: 50%;
  width: 8px; height: 8px;
  border-radius: 1px;
  background: var(--accent);
  transform-origin: center;
  will-change: transform, opacity;
  animation: cp-fly 1.4s cubic-bezier(.15,.8,.25,1) forwards;
}
@keyframes cp-fly {
  0%   { transform: translate(-50%, -50%) rotate(var(--a)) translateX(0) rotate(0deg); opacity: 1; }
  100% { transform: translate(-50%, -50%) rotate(var(--a)) translateX(var(--d)) rotate(720deg); opacity: 0; }
}

/* Screen-shake — applied to #app for a brief window. */
.screen-shake {
  animation: scr-shake 0.55s cubic-bezier(.36,.07,.19,.97);
}
@keyframes scr-shake {
  10%, 90%  { transform: translate(-1px, 0);  }
  20%, 80%  { transform: translate(2px, 0);   }
  30%, 50%, 70% { transform: translate(-3px, 0); }
  40%, 60%  { transform: translate(3px, 0);   }
}

@media (max-width: 720px) {
  .celebrate-banner .cb-main { font-size: 32px; letter-spacing: 3px; }
  .celebrate-banner .cb-sub  { font-size: 12px; }
}

.factory {
  padding: 0;
  overflow: hidden;
  display: flex; flex-direction: column;
  min-width: 0;
}
.factory-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 18px 24px 24px;
  display: flex; flex-direction: column; gap: 14px;
  /* Faint drafting grid — matches the research sheet so the two tabs read as one document. */
  background:
    linear-gradient(rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    var(--bg);
  background-size: 24px 24px, 24px 24px, 100% 100%;
}

/* ========== SIDEBAR ========== */
.sidebar {
  border-left: 1px solid var(--line);
  background: rgba(10, 42, 58, 0.6);
  padding: 16px;
  overflow-y: auto;
  display: flex; flex-direction: column; gap: 14px;
  font-size: 11px;
  opacity: 0;
  transition: opacity 0.4s ease 0.1s;
  min-width: 0;
}
.factory-view.has-sidebar .sidebar { opacity: 1; }

.side-box {
  position: relative;
  border: 1px solid var(--line);
  padding: 12px;
  background: rgba(13, 59, 79, 0.5);
}
.side-box h3 {
  display: flex; align-items: center; gap: 10px;
  font-size: 10px; letter-spacing: 2px; color: var(--ok);
  margin: 0 0 10px;
}
.side-box h3::after {
  content: '';
  flex: 1 1 auto;
  min-width: 16px;
  height: 0;
  border-top: 1px dashed var(--line-dim);
  align-self: center;
}
.side-box .big {
  font-size: 22px; color: var(--white);
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
}
.side-box .big .unit {
  font-size: 11px; color: var(--text-dim); letter-spacing: 1px;
}
.side-box .row {
  display: flex; justify-content: space-between;
  margin-top: 4px;
  font-size: 10px; color: var(--text-dim); letter-spacing: 1px;
}
.side-box .row b {
  color: var(--text); font-weight: normal;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* status-box bigrow for prominent schematics / patents */
.side-box .bigrow {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 6px 0 8px;
  margin-bottom: 4px;
  border-bottom: 1px dashed var(--line-dim);
}
.side-box .bigrow:last-of-type { border-bottom: none; margin-bottom: 8px; }
.side-box .bigrow .k {
  font-size: 9px; letter-spacing: 2px; color: var(--text-dim);
}
.side-box .bigrow .v {
  font-family: var(--font-mono);
  font-size: 18px; font-weight: bold;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.5px;
}
.side-box .bigrow .v.schem   { color: var(--accent); }
.side-box .bigrow .v.patents { color: var(--warn); }

/* publish link button in sidebar publish box */
.side-box.publish {
  border-color: var(--warn);
  background: rgba(255, 126, 95, 0.08);
}
.side-box.publish h3 { color: var(--warn); }
.side-box.publish .big { color: var(--warn); }
.side-box.publish .sheet-corner svg { stroke: var(--warn); }
.publish-link-btn {
  width: 100%;
  margin-top: 10px;
  padding: 8px;
  background: transparent;
  color: var(--warn);
  border: 1px solid var(--warn);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: bold;
  letter-spacing: 2px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}
.publish-link-btn:hover {
  background: var(--warn);
  color: var(--bg);
}

/* support buttons */
.support-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
}
.support-btn {
  border: 1px dashed var(--line);
  background: rgba(13, 59, 79, 0.6);
  color: var(--text);
  padding: 10px 6px;
  font-family: var(--font-mono);
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: background 0.12s, border-color 0.12s;
}
.support-btn:not(.unaffordable):not(.locked):hover {
  background: rgba(74, 159, 207, 0.18);
  border-color: var(--text);
}
.support-btn.owned {
  border-style: solid;
  border-color: var(--ok);
  background: rgba(120, 224, 143, 0.06);
}
.support-btn.unaffordable {
  cursor: not-allowed; opacity: 0.55;
}
.support-btn.locked {
  cursor: default; opacity: 0.3; pointer-events: none;
}
.support-btn .s-name {
  font-family: var(--font-ui);
  font-size: 10px; letter-spacing: 1px; color: var(--text);
}
.support-btn.owned .s-name { color: var(--white); }
.support-btn .s-count {
  font-size: 16px; color: var(--accent);
  font-variant-numeric: tabular-nums;
  margin: 4px 0 2px;
}
.support-btn .s-cost {
  font-size: 9px; color: var(--ok);
  font-variant-numeric: tabular-nums;
}
.support-btn.unaffordable .s-cost { color: var(--warn); }
.support-btn.locked .s-cost { color: var(--text-dim); }
.support-desc {
  font-family: var(--font-ui);
  font-size: 10px; color: var(--text-dim);
  line-height: 1.5; margin-top: 8px;
}
.support-desc b { color: var(--accent); }

/* prestige box */
.side-box.prestige {
  border-color: var(--accent);
  background: rgba(255, 214, 112, 0.08);
}
.side-box.prestige h3 { color: var(--accent); }
.side-box.prestige .big { color: var(--accent); }
.prestige-btn {
  width: 100%;
  margin-top: 10px;
  padding: 10px;
  background: var(--accent);
  color: var(--bg);
  border: 1px solid var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 3px;
  cursor: pointer;
  transition: background 0.12s, transform 0.05s;
}
.prestige-btn:hover { background: var(--white); }
.prestige-btn:active { transform: translateY(1px); }
.prestige-btn.dim {
  background: transparent;
  color: var(--text-dim);
  border-color: var(--line);
  cursor: not-allowed;
}
.prestige-btn.dim:hover { background: transparent; }

/* auto-buy indicator on slots */
.slot .auto-buy {
  position: absolute;
  bottom: 3px; left: 4px;
  font-size: 9px;
  color: var(--accent);
  opacity: 0;
  letter-spacing: 1px;
  font-family: var(--font-mono);
}
.slot.auto-buy-on .auto-buy { opacity: 1; }
.slot.auto-buy-on { border-color: var(--accent); border-style: solid; }

/* auto-buy tap chip — visible on touch devices and when auto-buy research is unlocked.
   Hidden by default; .show-auto-chip on .slot (toggled in renderFactory) reveals it.
   On desktop, the chip is still visible but small/subtle; right-click also works. */
.slot .auto-chip {
  position: absolute;
  top: 3px; left: 4px;
  width: 20px; height: 20px;
  padding: 0;
  display: none;
  align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: bold;
  letter-spacing: 0;
  cursor: pointer;
  z-index: 2;
  line-height: 1;
  transition: color 0.12s, border-color 0.12s, background 0.12s;
}
.slot.show-auto-chip .auto-chip { display: inline-flex; }
.slot .auto-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.slot.auto-buy-on .auto-chip {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(255, 214, 112, 0.12);
}
@media (max-width: 720px) {
  .slot .auto-chip { width: 24px; height: 24px; font-size: 11px; }
}

/* Activity log / TIPS sidebar panel removed — tips now fire as toast popups. */

/* welcome-back earnings list */
.earned-list {
  list-style: none;
  margin: 10px 0;
  padding: 10px;
  border: 1px solid var(--ok);
  background: rgba(120, 224, 143, 0.06);
  font-family: var(--font-mono);
}
.earned-list li {
  color: var(--ok);
  font-size: 12px; padding: 3px 0;
  font-variant-numeric: tabular-nums;
}
.earned-list li::before {
  content: '+ '; color: var(--accent);
}
.earned-list li.none {
  color: var(--text-dim); font-style: italic;
}
.earned-list li.none::before { content: '' }
/* ---------- MINE BAR (one big button per unlocked resource) ---------- */
.mine-card {
  display: flex; justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 6px 0 10px;
}

.mine-btn {
  display: flex; align-items: center; gap: 12px;
  background: rgba(255, 214, 112, 0.08);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 10px 20px;
  cursor: pointer;
  font-family: var(--font-mono);
  transition: background 0.1s, transform 0.05s, border-color 0.12s;
  user-select: none;
  position: relative;
  min-width: 180px;
}
.mine-btn:hover  { background: rgba(255, 214, 112, 0.18); }
.mine-btn:active { transform: translateY(1px); background: rgba(255, 214, 112, 0.3); }
.mine-btn.pulse { animation: mine-btn-pulse 0.25s ease-out; }
@keyframes mine-btn-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255, 214, 112, 0.7); }
  100% { box-shadow: 0 0 0 10px rgba(255, 214, 112, 0); }
}
.mine-btn .mine-ico {
  width: 26px; height: 26px;
  flex-shrink: 0;
}
.mine-btn .mine-ico svg {
  width: 100%; height: 100%;
  stroke: var(--accent); stroke-width: 1.5; fill: none;
}
.mine-btn .mine-label .n {
  font-size: 13px; letter-spacing: 2.5px; font-weight: bold;
  font-family: var(--font-ui);
  white-space: nowrap;
}
.mine-btn .mine-label .d {
  font-size: 10px; color: var(--text-dim); letter-spacing: 1.5px;
  margin-top: 2px;
}
.mine-btn .mine-progress {
  margin-top: 6px;
  min-width: 150px;
}
.mine-btn .mine-progress-bar {
  position: relative;
  height: 3px;
  background: rgba(74, 159, 207, 0.2);
  border: 1px solid var(--line-dim);
  overflow: hidden;
}
.mine-btn .mine-progress-fill {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: var(--accent);
  min-width: 0;
}
.mine-btn .mine-progress-text {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--accent);
  letter-spacing: 0.5px;
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}
.mine-btn.auto-on .mine-progress-fill { background: var(--ok); }
.mine-btn.auto-on .mine-progress-text { color: var(--ok); }
.mine-btn.unaffordable .mine-progress-fill { background: var(--warn); }
.mine-btn.unaffordable .mine-progress-text { color: var(--warn); }
/* unaffordable state — can't afford the input resource */
.mine-btn.unaffordable {
  opacity: 0.55;
  border-color: var(--warn);
  color: var(--warn);
  cursor: not-allowed;
  background: rgba(255, 126, 95, 0.04);
}
.mine-btn.unaffordable:hover { background: rgba(255, 126, 95, 0.08); }
.mine-btn.unaffordable .mine-ico svg { stroke: var(--warn); }
.mine-btn.unaffordable .mine-label .d { color: var(--warn); }

/* subtle auto-on indicator — schematic pickaxe SVG + AUTO label */
.mine-btn .mine-auto-badge {
  position: absolute;
  top: 4px; right: 6px;
  display: none;
  align-items: center;
  gap: 3px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1.2px;
  color: var(--ok);
  opacity: 0.9;
}
.mine-btn.auto-on .mine-auto-badge { display: inline-flex; }
.mine-btn .mine-auto-badge svg { width: 10px; height: 10px; display: block; }
.mine-btn .mine-auto-badge svg path,
.mine-btn .mine-auto-badge svg line {
  stroke: currentColor;
  stroke-width: 1.4;
  stroke-linecap: round;
  fill: none;
}
.mine-btn.auto-on {
  border-color: var(--ok);
  background: rgba(120, 224, 143, 0.06);
  color: var(--ok);
}
.mine-btn.auto-on:hover { background: rgba(120, 224, 143, 0.14); }
.mine-btn.auto-on .mine-ico svg { stroke: var(--ok); }

/* ---------- BUY MODE BAR ---------- */
/* Pinned at top of .factory — outside the scroll wrapper so it never moves. */
.buy-mode-bar {
  flex: none;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 8px 16px;
  margin: 14px 24px 0;
  border: 1px solid var(--line);
  background: rgba(10, 42, 58, 0.9);
  font-family: var(--font-mono);
}
.buy-mode-bar .label {
  font-size: 10px;
  letter-spacing: 2.5px;
  color: var(--ok);
  white-space: nowrap;
}
.buy-mode-bar .bm-btns {
  display: flex;
  gap: 6px;
}
.bm-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: bold;
  letter-spacing: 1px;
  padding: 5px 14px;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  min-width: 48px;
}
.bm-btn:hover:not(.locked):not(.on) {
  border-color: var(--text);
  background: rgba(74, 159, 207, 0.15);
  color: var(--white);
}
.bm-btn.on {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.bm-btn.locked {
  opacity: 0.3;
  cursor: not-allowed;
}
.buy-mode-bar .bm-hint {
  margin-left: auto;
  font-family: var(--font-ui);
  font-size: 10px;
  color: var(--text-dim);
  font-style: italic;
  letter-spacing: 0.5px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}
/* Hide the hint on narrow screens — the button labels already indicate locked modes */
@media (max-width: 720px) {
  .buy-mode-bar .bm-hint { display: none; }
  .buy-mode-bar { margin: 10px 14px 0; padding: 6px 10px; }
}

/* ---------- TIER ROWS ---------- */
.tier {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 12px;
  position: relative;
}
.tier.locked {
  opacity: 0.35;
  border-style: dashed;
}
.tier.locked {
  opacity: 0.55;
  border-style: dashed;
}
.tier.locked .tier-head b { color: var(--text-dim); }
.tier.locked .unlock-hint {
  color: var(--warn);
  letter-spacing: 1.5px;
  font-size: 10px;
  font-family: var(--font-mono);
}
.tier.locked .unlock-bar {
  margin-top: 10px;
  height: 3px;
  background: rgba(74, 159, 207, 0.15);
  overflow: hidden;
}
.tier.locked .unlock-fill {
  height: 100%;
  background: var(--warn);
  transition: width 0.3s;
  width: 0%;
}
.tier-head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 10px;
  font-size: 10px; letter-spacing: 2px;
  color: var(--ok);
}
.tier-head b {
  color: var(--white); font-weight: normal; font-size: 11px;
  letter-spacing: 2px;
}
.tier-head .rate {
  color: var(--accent);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 1px;
  flex: 0 0 auto;
}
.tier-head .unlock-hint { flex: 0 0 auto; }
.tier-pip {
  border: 1px dashed var(--accent);
  padding: 2px 7px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 2px;
  background: rgba(255, 214, 112, 0.06);
  flex: 0 0 auto;
}
.tier-pip.locked {
  border-color: var(--text-dim);
  color: var(--text-dim);
  background: transparent;
}
.tier-rule {
  flex: 1 1 auto;
  min-width: 16px;
  height: 0;
  border-top: 1px dashed var(--line-dim);
  align-self: center;
}

/* Mine block: wraps the mine-card as the "source" schematic of the sheet. */
.mine-block {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 12px;
}
.mine-block .mine-card { margin: 0; }
.source-label {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 2px;
}
.source-label .sl-pip {
  border: 1px dashed var(--accent);
  padding: 2px 7px;
  color: var(--accent);
  background: rgba(255, 214, 112, 0.06);
  flex: 0 0 auto;
}
.source-label .sl-rule {
  flex: 1 1 auto;
  min-width: 16px;
  height: 0;
  border-top: 1px dashed var(--line-dim);
  align-self: center;
}
.source-label .sl-tag {
  color: var(--text-dim);
  font-size: 9px;
  letter-spacing: 2px;
  flex: 0 0 auto;
}

/* Flow connectors between tier rows — vertical dashed pipe with material pill. */
.tier-flow {
  position: relative;
  display: flex; justify-content: center; align-items: center;
  height: 22px;
  margin: -6px 0;
  pointer-events: none;
}
.tier-flow::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  left: 50%; width: 0;
  border-left: 1px dashed var(--line-dim);
  transform: translateX(-0.5px);
}
.tier-flow .tf-label {
  position: relative; z-index: 1;
  background: var(--bg);
  border: 1px dashed var(--line-dim);
  padding: 2px 9px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 2px;
  text-transform: uppercase;
}

/* ---------- MACHINE SLOTS ---------- */
.slots {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.slot {
  border: 1px dashed var(--line);
  background: rgba(13, 59, 79, 0.6);
  padding: 10px 8px;
  min-height: 92px;
  display: flex; flex-direction: column; align-items: center;
  justify-content: center;
  gap: 4px;
  position: relative;
  color: var(--text);
  font-family: var(--font-mono);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, transform 0.05s;
}
.slot:not(.locked):not(.unaffordable):hover {
  background: rgba(74, 159, 207, 0.25);
  border-color: var(--white);
}
/* Owned = keeps a subtle tinted background + ×N count. Border is driven by affordability below. */
.slot.owned                  { background: rgba(120, 224, 143, 0.05); }
.slot.owned.unaffordable     { background: rgba(255, 126, 95, 0.05); }

/* Affordable: green solid border — signals "you can buy this now" */
.slot.affordable {
  border-style: solid;
  border-color: var(--ok);
}
.slot.affordable:hover {
  background: rgba(120, 224, 143, 0.12);
}

/* Unaffordable: red/warn dashed border — signals "not enough resources" */
.slot.unaffordable {
  border-style: dashed;
  border-color: var(--warn);
  cursor: not-allowed;
  opacity: 0.7;
}
.slot.locked {
  opacity: 0.25;
  cursor: default;
  pointer-events: none;
}
.slot .count {
  position: absolute; top: 4px; right: 8px;
  font-size: 10px; color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.slot .bottleneck {
  position: absolute; top: 4px; left: 6px;
  font-size: 10px; color: var(--warn);
  opacity: 0;
  transition: opacity 0.2s;
}
.slot.bottlenecked .bottleneck { opacity: 1; animation: bn-blink 1.4s ease-in-out infinite; }
.slot.bottlenecked {
  border-style: dashed;
  border-color: var(--warn);
}
.slot.bottlenecked .ico svg { stroke: var(--warn); }
@keyframes bn-blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.3; }
}
.slot .ico {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
}
.slot .ico svg {
  width: 100%; height: 100%;
  stroke: var(--text); stroke-width: 1.2; fill: none;
}
.slot.owned .ico svg { stroke: var(--ok); }
.slot .name {
  font-family: var(--font-ui);
  font-size: 10px; letter-spacing: 1px;
  color: var(--text);
}
.slot.owned .name { color: var(--white); }
.slot .cost {
  font-size: 10px; color: var(--ok);
  font-variant-numeric: tabular-nums;
  text-align: center;
}
.slot.unaffordable .cost { color: var(--warn); }

/* purchase pulse animation */
.slot.pulse {
  animation: slot-pulse 0.28s ease-out;
}
@keyframes slot-pulse {
  0%   { transform: scale(1); box-shadow: 0 0 0 0 rgba(120, 224, 143, 0.5); }
  50%  { transform: scale(1.04); box-shadow: 0 0 0 6px rgba(120, 224, 143, 0);}
  100% { transform: scale(1); }
}

/* Top-bar Settings button pinned to the far right on all viewports */
.topbar-settings { flex: 0 0 auto; }
.topbar-settings .icon { width: 14px; height: 14px; }
.btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 1.5px;
  padding: 4px 10px;
  cursor: pointer;
  transition: background 0.12s;
}
.btn:hover  { background: rgba(74, 159, 207, 0.15); color: var(--white); }
.btn:active { background: rgba(74, 159, 207, 0.3); }
.btn.warn { border-color: var(--warn); color: var(--warn); }
.btn.warn:hover { background: rgba(255, 126, 95, 0.15); color: var(--white); }
.btn.on { border-color: var(--ok); color: var(--ok); background: rgba(120, 224, 143, 0.08); }

.btn.btn-icon {
  display: inline-flex; align-items: center; gap: 6px;
}
.btn .icon {
  width: 12px; height: 12px;
  display: block;
}
.btn .icon line {
  stroke: currentColor;
  stroke-width: 1.2;
  stroke-linecap: square;
}
.btn .icon circle {
  fill: currentColor;
  stroke: none;
}

/* ========== TREE VIEW ========== */
.tree-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
  display: flex; justify-content: space-between; align-items: center;
}
.tree-title {
  font-size: 12px; letter-spacing: 3px;
  color: var(--white);
}
.tree-rp {
  display: flex; align-items: baseline; gap: 14px;
  color: var(--accent);
  font-family: var(--font-mono);
}
.rp-big {
  font-size: 16px; letter-spacing: 2px;
  font-variant-numeric: tabular-nums;
}
.rp-big #rp-value {
  color: var(--white);
  font-size: 22px;
  font-weight: bold;
}
.rp-rate {
  font-size: 11px; color: var(--ok);
  font-variant-numeric: tabular-nums;
}

/* Prestige action in the research header — only visible when canPrestige() */
.tree-prestige {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 10px;
  border: 1px solid var(--accent);
  background: rgba(255, 214, 112, 0.08);
  font-family: var(--font-mono);
}
.tree-prestige .tp-gain {
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.tree-prestige .tp-gain b { color: var(--white); font-size: 14px; font-weight: bold; }
.tree-prestige .prestige-btn {
  width: auto;
  margin-top: 0;
  padding: 6px 14px;
  font-size: 11px;
  letter-spacing: 2px;
}

/* Legacy shared keyframe — still referenced by .patent.affordable. */
@keyframes tier-unlock-glow {
  0%, 100% { box-shadow: 0 0 6px rgba(255, 214, 112, 0.35); }
  50%      { box-shadow: 0 0 16px rgba(255, 214, 112, 0.85); }
}

/* =========================================================================
   RESEARCH · PARALLEL RAILS
   Horizontal assembly-line view. Each branch = one track. Ring tier
   labels run across the top; nodes sit evenly across each track on a
   backbone line. Clicking a node arms it; clicking again confirms the buy.
   Branch color is applied via the --branch-color custom property (set by
   .br-speed etc) so one set of state rules handles all branches.
   ========================================================================= */

/* Branch palette — shared with any element that carries a .br-* class. */
.br-speed       { --branch-color: #60d5ff; }
.br-logistics   { --branch-color: #ff9a7a; }
.br-yield       { --branch-color: #b9f5a1; }
.br-automation  { --branch-color: #89b7ff; }
.br-efficiency  { --branch-color: #c39bff; }
.br-power       { --branch-color: #ffd670; }
.br-origin      { --branch-color: #ffd670; }
.br-tiers       { --branch-color: #78e08f; }   /* tier unlocks — ok green */

.rails-scroll {
  flex: 1;
  overflow: auto;
  padding: 24px;
  background:
    /* faint drafting grid */
    linear-gradient(rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 159, 207, 0.05) 1px, transparent 1px),
    var(--bg);
  background-size: 24px 24px, 24px 24px, 100% 100%;
  -webkit-overflow-scrolling: touch;
}

/* Main drawing sheet — framed, dark, self-contained. */
.rails-sheet {
  position: relative;
  background: rgba(6, 28, 39, 0.8);
  border: 1px solid var(--line);
  padding: 28px 32px 32px;
  min-width: 860px;   /* keeps tier columns readable; scroll beyond that on mobile */
  font-family: var(--font-mono);
}
.rails-sheet::before {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px solid var(--line-dim);
  pointer-events: none;
}

/* Drafting corner ticks — subtle L-shaped marks at each corner of the sheet. */
.sheet-corner {
  position: absolute;
  width: 18px;
  height: 18px;
  pointer-events: none;
  z-index: 2;
}
.sheet-corner svg {
  display: block;
  stroke: var(--line);
  stroke-width: 1;
  fill: none;
}
.sheet-corner-tl { top: 3px; left: 3px; }
.sheet-corner-tr { top: 3px; right: 3px; transform: scaleX(-1); }
.sheet-corner-bl { bottom: 3px; left: 3px; transform: scaleY(-1); }
.sheet-corner-br { bottom: 3px; right: 3px; transform: scale(-1); }

/* Tier column headers — align exactly with the rail cells below via a
   shared 140px / 1fr / 80px three-column grid. */
.rails-ringbar {
  display: grid;
  grid-template-columns: 140px 1fr 80px;
  align-items: baseline;
  column-gap: 12px;
  padding-bottom: 10px;
  margin-bottom: 6px;
  border-bottom: 1px dashed var(--line-dim);
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--text-dim);
}
.rails-ringbar .rb-left,
.rails-ringbar .rb-right {
  color: var(--text-dim);
}
.rails-ringbar .rb-right { text-align: right; }
.rails-ringbar .rb-tiers {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  text-align: center;
}
.rails-ringbar .rb-col {
  padding: 2px 0;
  color: var(--text-dim);
}

.rails-body {
  display: flex;
  flex-direction: column;
}

.rail {
  display: grid;
  grid-template-columns: 140px 1fr 80px;
  align-items: center;
  column-gap: 12px;
  padding: 14px 0;
  position: relative;
}
.rail + .rail {
  border-top: 1px dashed rgba(74, 159, 207, 0.14);
}

/* Branch label — colored dot + name. */
.rail-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 2.5px;
  color: var(--branch-color, var(--text));
  font-weight: 500;
}
.rail-label .rl-glyph {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--branch-color, var(--text));
  box-shadow: 0 0 6px var(--branch-color, transparent);
  opacity: 0.9;
  flex-shrink: 0;
}
.rail-label .rl-name {
  white-space: nowrap;
}

/* Track: backbone runs the full width, nodes sit in 10 even grid cells on top. */
.rail-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  align-items: center;
  min-height: 80px;
}
/* Tier-unlock rail spreads its 5 nodes across the full track width instead
   of sharing the research-tree 8-column grid. */
.rail-track-tiers { grid-template-columns: repeat(5, 1fr); }

/* Backbone — dashed horizontal line across the whole track. Base stroke is
   tinted in the branch colour (dim) so the whole rail reads as "this line
   belongs to Speed / Logistics / …" at a glance. The fill on top brightens
   up to the last owned node. */
.rail-backbone {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  pointer-events: none;
}
.rail-backbone::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, var(--branch-color, var(--line-dim)) 50%, transparent 50%);
  background-size: 6px 1px;
  background-repeat: repeat-x;
  opacity: 0.22;
}
.rail-backbone-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0%;
  background: var(--branch-color, var(--text));
  opacity: 0.9;
  box-shadow: 0 0 6px var(--branch-color, transparent);
  transition: width 0.3s ease-out;
  z-index: 1;
}

.rail-cell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}
/* Anchor tick — a short bright bar behind each node circle, branch-coloured,
   so the node reads as "soldered to the backbone" rather than floating on a
   dashed line. Hidden on locked / unrevealed cells to avoid teasing rings
   the player can't interact with. */
.rail-cell.has-node::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 2px;
  background: var(--branch-color, var(--line));
  opacity: 0.5;
  pointer-events: none;
  z-index: 1;
  border-radius: 1px;
}
.rail-cell.has-node:has(.rail-node.locked)::before {
  opacity: 0;
}
.rail-cell.has-node:has(.rail-node.owned)::before {
  opacity: 0.85;
}

/* The node itself — name above the circle, sub-block (level + cost) below.
   Laid out as a 1fr-auto-1fr grid so the circle is always at the vertical
   centre of the track regardless of how much text sits above/below; that's
   what keeps the backbone line passing through every circle cleanly. */
.rail-node {
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto 1fr;
  justify-items: center;
  align-items: center;
  row-gap: 3px;
  min-height: 80px;
  cursor: pointer;
  padding: 4px 2px;
  user-select: none;
  /* --branch-color comes from the .br-* class on this element. Don't
     override it here — this rule declared after .br-* would clobber the
     branch hue with var(--text). */
  transition: transform 0.12s;
}
.rail-node:hover {
  transform: translateY(-1px);
}
.rail-node:not(.locked):hover .rn-circle {
  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, 0.06),
    inset 0 -1px 2px rgba(0, 0, 0, 0.35),
    0 0 12px color-mix(in srgb, var(--branch-color) 60%, transparent);
}
.rail-node .rn-name {
  grid-row: 1;
  align-self: end;
  font-size: 8px;
  letter-spacing: 0.8px;
  color: var(--branch-color);
  text-align: center;
  max-width: 90px;
  line-height: 1.2;
}
.rail-node .rn-circle {
  grid-row: 2;
  position: relative;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1.5px solid var(--branch-color);
  /* Subtle depth — inner radial gradient highlighted at the top-left,
     plus inset shadows for a concave button look. */
  background:
    radial-gradient(circle at 35% 28%, rgba(255, 255, 255, 0.10), transparent 55%),
    linear-gradient(180deg, var(--bg-dim) 0%, var(--bg-deep) 100%);
  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, 0.06),
    inset 0 -1px 2px rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  transition: border-width 0.12s, box-shadow 0.2s, background 0.12s, transform 0.12s;
  flex-shrink: 0;
}
.rail-node .rn-circle::before {
  /* inner schematic ring */
  content: '';
  position: absolute;
  inset: 4px;
  border: 0.5px solid var(--branch-color);
  border-radius: 50%;
  opacity: 0.45;
  pointer-events: none;
}
.rail-node .rn-glyph {
  position: relative;
  width: 14px;
  height: 14px;
  pointer-events: none;
  color: var(--branch-color);
  z-index: 2;
}
.rail-node .rn-glyph .glyph {
  fill: currentColor;
}

/* Progress ring — SVG circle stroked around the node to show level/max.
   Only rendered for leveled nodes; rotated -90deg so the arc starts at 12. */
.rail-node .rn-progress {
  position: absolute;
  inset: -3px;
  width: calc(100% + 6px);
  height: calc(100% + 6px);
  pointer-events: none;
  transform: rotate(-90deg);
  overflow: visible;
}
.rail-node .rn-progress-arc {
  fill: none;
  stroke: var(--branch-color);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 0 1000;
  transition: stroke-dasharray 0.35s ease-out, stroke 0.12s;
  opacity: 0.85;
}
.rail-node.owned .rn-progress-arc { opacity: 1; }
.rail-node.locked .rn-progress-arc { opacity: 0; }

/* Purchase burst — an expanding ring that fades out on confirm. Distinct
   element (not ::before which is the inner ring) so both can coexist. */
.rail-node .rn-burst {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--branch-color);
  opacity: 0;
  pointer-events: none;
  transform: scale(1);
}
.rail-node.pulse .rn-burst {
  animation: rn-burst 0.6s cubic-bezier(0.2, 0.6, 0.3, 1);
}
@keyframes rn-burst {
  0%   { transform: scale(1);    opacity: 0.9; }
  100% { transform: scale(2.4);  opacity: 0;   }
}

.rail-node .rn-sub {
  grid-row: 3;
  align-self: start;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  text-align: center;
}
.rail-node .rn-level {
  font-size: 8px;
  letter-spacing: 0.5px;
  color: var(--accent);
  font-weight: bold;
  font-family: var(--font-mono);
  min-height: 9px;
}
/* Cost badge — frame the cost in a small pill so it reads as a data stamp
   rather than floating text. Empty strings collapse so locked/unrevealed
   nodes don't show an empty pill. */
.rail-node .rn-cost {
  font-size: 8px;
  letter-spacing: 0.5px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  min-height: 9px;
  padding: 1px 5px;
  border: 1px solid transparent;
  border-radius: 2px;
  background: rgba(10, 42, 58, 0.4);
  line-height: 1;
}
.rail-node .rn-cost:empty {
  border: none;
  background: transparent;
  padding: 0;
  min-height: 9px;
}

/* ---- State styles ---- */
.rail-node.available .rn-circle      { border-color: var(--branch-color); }
.rail-node.available .rn-name        { color: var(--branch-color); }
.rail-node.available .rn-cost        { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }

/* Owned — stay in the branch colour (so each rail reads as a single
   family) and lean on the full progress ring + solid background to
   signal ownership instead of a colour swap. */
.rail-node.owned .rn-circle          {
  border-color: var(--branch-color);
  background:
    radial-gradient(circle at 35% 28%, rgba(255, 255, 255, 0.12), transparent 55%),
    linear-gradient(180deg,
      color-mix(in srgb, var(--branch-color) 22%, var(--bg-dim)) 0%,
      color-mix(in srgb, var(--branch-color) 8%, var(--bg-deep)) 100%);
}
.rail-node.owned .rn-circle::before  { border-color: var(--branch-color); opacity: 0.7; }
.rail-node.owned .rn-glyph           { color: var(--branch-color); }
.rail-node.owned .rn-name            { color: var(--branch-color); }
.rail-node.owned .rn-level           { color: var(--branch-color); opacity: 0.95; }
.rail-node.owned .rn-cost            {
  color: var(--branch-color);
  opacity: 0;
}

/* Locked — still in the discipline's colour, just muted. Keeps every rail
   reading as a single family from the moment the player opens the tab. */
.rail-node.locked                    { cursor: not-allowed; }
.rail-node.locked .rn-circle         {
  border-style: dashed;
  border-color: var(--branch-color);
  opacity: 0.45;
  box-shadow: none;
}
.rail-node.locked .rn-circle::before { opacity: 0.2; }
.rail-node.locked .rn-glyph          { color: var(--branch-color); opacity: 0.55; }
.rail-node.locked .rn-name           { color: var(--branch-color); opacity: 0.45; }
.rail-node.locked .rn-cost           {
  color: var(--branch-color);
  opacity: 0.4;
  border-color: transparent;
  background: transparent;
}
/* v0.9.8 — fully-unrevealed nodes (prereqs not even half-met) render a
   tick more faintly than "almost unlockable" locked nodes, so the player
   can visually distinguish "this one is close" from "this one is a long
   way off". Previously these nodes were hidden entirely (visibility:
   hidden); now they sit in place as a faint ghost of what's to come. */
.rail-node.unrevealed .rn-circle { opacity: 0.22; }
.rail-node.unrevealed .rn-glyph  { opacity: 0.3; }
.rail-node.unrevealed .rn-name   { opacity: 0.22; }
.rail-node.unrevealed .rn-cost   { opacity: 0.22; }

/* Affordable — static drop-shadow glow (blur radius does NOT animate — same
   lesson as before: animating blur chokes the GPU on mobile). */
.rail-node.affordable .rn-circle {
  filter: drop-shadow(0 0 4px var(--branch-color));
  animation: rail-node-glow 1.8s ease-in-out infinite;
}
.rail-node.affordable .rn-name {
  color: var(--white);
}
@keyframes rail-node-glow {
  0%, 100% { border-width: 1.5px; }
  50%      { border-width: 2.5px; }
}

/* Armed — waiting for confirmation click. */
.rail-node.armed .rn-circle {
  border-color: var(--accent);
  border-width: 2px;
  filter: drop-shadow(0 0 6px var(--accent));
  animation: rail-node-armed 0.7s ease-in-out infinite alternate;
}
.rail-node.armed .rn-name {
  color: var(--accent);
  font-weight: bold;
}
@keyframes rail-node-armed {
  0%   { border-width: 2px; }
  100% { border-width: 3px; }
}

/* Purchase pulse — quick flash on the circle. */
.rail-node.pulse .rn-circle {
  animation: rail-node-pulse 0.45s ease-out;
}
@keyframes rail-node-pulse {
  0%   { transform: scale(1);    }
  45%  { transform: scale(1.25); box-shadow: 0 0 18px var(--branch-color); }
  100% { transform: scale(1);    box-shadow: 0 0 0 transparent; }
}

/* Affordable + pulse combo — keep the glow going after the quick pulse. */
.rail-node.affordable.pulse .rn-circle {
  animation: rail-node-pulse 0.45s ease-out, rail-node-glow 1.8s ease-in-out infinite 0.45s;
}

/* Unaffordable — available, prereqs met, but not enough schematics.
   Muted ring, muted name; cost text shown in warn colour. */
.rail-node.unaffordable .rn-circle { opacity: 0.7; }
.rail-node.unaffordable .rn-name   { color: var(--branch-color); opacity: 0.7; }
.rail-node.unaffordable .rn-cost   { color: var(--warn); }

/* Tier-unlock nodes — circle shows "T#" instead of a glyph. Uses the
   shared green accent as its branch colour. */
.tier-unlock-node .rn-tier {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: bold;
  letter-spacing: 0.5px;
  color: var(--branch-color);
  line-height: 1;
}
.tier-unlock-node.owned .rn-tier { color: var(--branch-color); }
.tier-unlock-node.locked .rn-tier { color: var(--text-dim); opacity: 0.6; }
.tier-unlock-node .rn-name {
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 80px;
}

/* Progress counter on the right end of each rail. */
.rail-progress {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--text-dim);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.rail-progress b {
  color: var(--branch-color, var(--white));
  font-size: 16px;
  font-weight: bold;
}
.rail-progress .rp-sep { margin: 0 2px; opacity: 0.5; }
.rail-progress .rp-max { opacity: 0.7; }
.rail-progress.complete b { color: var(--ok); }
.rail-progress.complete .rp-max { color: var(--ok); opacity: 1; }

/* Pause the rails' pulsing animations when another tab is active. */
body:not([data-tab="tree"]) .rail-node.affordable .rn-circle,
body:not([data-tab="tree"]) .rail-node.armed .rn-circle {
  animation: none;
}
body:not([data-tab="achievements"]) .ach.new,
body:not([data-tab="achievements"]) .ach-new-dot,
body:not([data-tab="achievements"]) .ach-page-new { animation: none; }
body:not([data-tab="mastery"]) .patent.affordable { animation: none; }

/* tooltip */
.tree-tooltip {
  position: fixed;
  border: 1px solid var(--accent);
  background: rgba(13, 59, 79, 0.97);
  padding: 12px 16px;
  width: 230px;
  font-family: var(--font-ui);
  font-size: 12px;
  z-index: 50;
  pointer-events: none;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.tree-tooltip .tip-name {
  color: var(--accent);
  font-weight: bold;
  font-size: 13px;
  letter-spacing: 1.5px;
  margin-bottom: 6px;
}
.tree-tooltip .tip-desc {
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 8px;
}
.tree-tooltip .tip-cost {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ok);
  letter-spacing: 1px;
}
.tree-tooltip.cant .tip-cost { color: var(--warn); }
.tree-tooltip.owned .tip-cost { color: var(--text-dim); }
.tree-tooltip .tip-req {
  font-size: 10px; color: var(--warn);
  letter-spacing: 1px;
  margin-top: 6px;
  font-family: var(--font-mono);
}

/* ========== MODAL (used by export/import) ========== */
.modal-bg {
  position: fixed; inset: 0;
  background: rgba(10, 20, 30, 0.75);
  /* Backdrop owns the scroll — "safe center" falls back to top-align when the
     modal is taller than the viewport, so the head of the modal stays reachable
     (fixes mobile Safari clipping when browser chrome shrinks the visible area). */
  display: flex; align-items: safe center; justify-content: center;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 24px 16px;
  z-index: 100;
}
.modal {
  border: 1px solid var(--line);
  background: var(--bg);
  padding: 24px;
  min-width: 420px;
  max-width: 640px;
  margin: auto 0;
}
.modal h3 {
  font-size: 11px; letter-spacing: 3px; color: var(--ok);
  margin-bottom: 12px;
}
.modal p {
  font-family: var(--font-ui);
  font-size: 12px; color: var(--text); margin-bottom: 10px;
  line-height: 1.5;
}
.modal textarea {
  width: 100%; min-height: 120px;
  background: var(--bg-dim);
  border: 1px solid var(--line);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 10px;
  resize: vertical;
  word-break: break-all;
}
.modal .actions {
  margin-top: 14px;
  display: flex; gap: 8px; justify-content: flex-end;
}

/* Export modal: one-tap copy + inline status. */
.export-copy-row {
  display: flex; align-items: center; gap: 12px;
  margin-top: 10px;
}
.export-copy-status {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 1.5px;
  color: var(--text-dim);
  min-height: 1em;
}
.export-copy-status.ok   { color: var(--ok); }
.export-copy-status.warn { color: var(--warn); }

/* ==========================================================
   MOBILE / TOUCH RESPONSIVE
   ==========================================================
   Three tiers:
     - (hover: none)       → any touch device (hide hover-only reveals)
     - max-width: 1024px   → tablet / landscape phone (narrower sidebar)
     - max-width: 720px    → portrait phone (full stacked layout)
     - max-width+landscape → landscape-phone specific tuning
*/

/* Touch device general tweaks */
@media (hover: none) {
  .log-item .log-close { opacity: 1; }
  .mine-btn:hover  { background: rgba(255, 214, 112, 0.08); }
  .tab:hover { /* suppress sticky hover on tap */ }
  .slot:not(.locked):not(.unaffordable):hover {
    background: rgba(13, 59, 79, 0.6);
    border-color: var(--line);
  }
  .slot.affordable:hover { background: rgba(120, 224, 143, 0.05); }
}

/* Tablet / landscape phone */
@media (max-width: 1024px) {
  .factory-view.has-sidebar { grid-template-columns: 1fr 240px; }
  .mastery-view, .stats-view { padding: 20px 18px; }
}

/* Portrait phone — the main mobile layer */
@media (max-width: 720px) {
  html, body { height: 100%; }

  #app {
    height: 100vh;
    height: 100svh;
    grid-template-rows: auto 1fr;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }

  /* ----- TOPBAR ----- */
  .topbar {
    flex-wrap: wrap;
    padding: 6px 10px;
    gap: 6px;
    min-height: 50px;
    align-items: center;
  }
  /* The logo is decorative on mobile — the tab bar makes it obvious what app
     this is, so reclaim that horizontal space for tabs + resources. */
  .logo { display: none; }
  .tabs {
    order: 2;
    flex: 0 1 auto;
    margin-left: 0;
    gap: 4px;
    min-width: 0;
    flex-wrap: wrap;
  }
  .topbar-settings { order: 3; margin-left: auto; }
  /* Swap to the short tab labels so all six tabs + the gear fit on one row. */
  .tab .tab-full { display: none; }
  .tab .tab-short { display: inline; }
  .tab {
    padding: 5px 6px;
    font-size: 9px;
    letter-spacing: 0.5px;
    min-height: 28px;
    display: flex; align-items: center;
  }
  .tab .tab-badge { margin-left: 4px; padding: 1px 4px; }
  .res-bar {
    order: 4;
    flex-basis: 100%;
    flex: 1 1 100%;
    justify-content: flex-start;
    overflow-x: auto;
    overflow-y: hidden;
    gap: 6px;
    /* Divider between the nav/tabs row and the materials row */
    border-top: 1px solid var(--line-dim);
    padding: 6px 0 4px;
    margin-top: 2px;
    -webkit-overflow-scrolling: touch;
  }
  .res-bar::-webkit-scrollbar { height: 3px; }
  .res {
    min-width: 96px;
    padding: 4px 10px 4px 8px;
    flex: 0 0 auto;
  }
  .res .v { font-size: 14px; }
  .res .l { font-size: 8px; }
  .res .rate { font-size: 9px; }
  .res-auto-btn { width: 26px; height: 26px; top: 2px; right: 2px; }
  .res-auto-btn svg { width: 14px; height: 14px; }

  /* ----- MAIN AREA ----- */
  .main-area { overflow: hidden; }

  /* Factory view: stack factory over sidebar, scroll whole thing.
     Scope to .active so we don't override .view:not(.active){display:none}. */
  .factory-view.active,
  .factory-view.active.has-sidebar {
    display: flex;
    flex-direction: column;
    grid-template-columns: none;
    height: 100%;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .factory-view:not(.active) { display: none; }
  .factory-view.has-sidebar {
    /* override the desktop 1fr 280px grid-cols on all layout states */
    grid-template-columns: none;
  }
  .factory {
    flex: none;
    overflow: visible;
  }
  .factory-scroll {
    flex: none;
    overflow: visible;
    padding: 10px 10px 14px;
    gap: 10px;
  }
  .sidebar {
    border-left: none;
    border-top: 2px solid var(--line);
    overflow: visible;
    padding: 12px 10px;
    flex: none;
    opacity: 1 !important;
    min-height: 0;
  }
  /* Keep the mobile sidebar hidden until the factory view actually has one
     to show — otherwise Publish + Support appear on turn-one of a fresh game. */
  .factory-view:not(.has-sidebar) .sidebar {
    display: none !important;
  }
  .side-box.activity-box {
    min-height: 140px;
    max-height: 240px;
  }
  .side-box.activity-box .log-list { max-height: 180px; }

  /* ----- BUY MODE BAR ----- */
  .buy-mode-bar {
    margin: 8px 10px 0;
    padding: 6px 8px;
    gap: 6px;
    justify-content: center;
  }
  .buy-mode-bar .label { font-size: 9px; letter-spacing: 1.5px; width: 100%; text-align: center; }
  .buy-mode-bar .bm-btns { width: 100%; gap: 4px; }
  .bm-btn {
    min-width: 0; padding: 6px 4px; font-size: 10px; letter-spacing: 0.3px;
    flex: 1 1 0;
    min-height: 34px;
  }

  /* ----- MINE BAR ----- */
  .mine-card {
    gap: 6px;
    margin: 4px 0 8px;
  }
  .mine-btn {
    min-width: 140px;
    padding: 8px 12px;
    flex: 1 1 160px;
  }
  .mine-btn .mine-label .n { font-size: 12px; letter-spacing: 1.5px; }
  .mine-btn .mine-label .d { font-size: 9px; }
  .mine-btn .mine-progress { min-width: 0; }
  .mine-btn .mine-progress-text { font-size: 8px; }

  /* ----- TIERS / SLOTS ----- */
  .tier { padding: 8px; }
  .tier-head { font-size: 9px; letter-spacing: 1.5px; }
  .tier-head b { font-size: 10px; }
  .tier.locked .unlock-hint { font-size: 9px; letter-spacing: 1px; }
  .slots { grid-template-columns: repeat(auto-fit, minmax(84px, 1fr)); gap: 6px; }
  .slot {
    min-height: 78px;
    padding: 6px 4px;
    gap: 2px;
  }
  .slot .ico { width: 22px; height: 22px; }
  .slot .name { font-size: 9px; letter-spacing: 0.5px; }
  .slot .cost { font-size: 9px; }
  .slot .count { font-size: 9px; top: 2px; right: 4px; }
  .slot .auto-buy { bottom: 2px; left: 3px; font-size: 8px; }

  /* ----- TREE VIEW ----- */
  /* Rails scroll natively — no touch-action override. */
  .tree-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 10px 14px;
  }
  .tree-title { font-size: 11px; letter-spacing: 2px; }
  .tree-rp { gap: 10px; align-items: center; }
  .rp-big { font-size: 13px; letter-spacing: 1.5px; }
  .rp-big #rp-value { font-size: 16px; }
  .rp-rate { font-size: 10px; }
  /* Rails sheet on mobile — reduce padding and let horizontal scroll kick in
     once the 8-tier grid no longer fits in the viewport. */
  .rails-scroll { padding: 12px; }
  .rails-sheet { padding: 18px 20px 20px; min-width: 900px; }
  .rails-ringbar { grid-template-columns: 100px 1fr 60px; column-gap: 8px; }
  .rail { grid-template-columns: 100px 1fr 60px; column-gap: 8px; padding: 10px 0; }
  .rail-label { font-size: 11px; letter-spacing: 1.6px; gap: 6px; }
  .rail-label .rl-glyph { width: 10px; height: 10px; }
  .rail-node { min-height: 72px; }
  .rail-track { min-height: 72px; }
  .rail-node .rn-circle { width: 28px; height: 28px; }
  .rail-node .rn-glyph { width: 12px; height: 12px; }
  .rail-node .rn-name { font-size: 7px; max-width: 70px; }
  .rail-node .rn-cost, .rail-node .rn-level { font-size: 7px; }
  .tier-unlock-node .rn-tier { font-size: 10px; }
  .rail-progress { font-size: 11px; }
  .rail-progress b { font-size: 14px; }
  .tree-tooltip {
    width: auto;
    max-width: calc(100vw - 24px);
    font-size: 11px;
    padding: 10px 12px;
  }

  /* ----- MASTERY / STATS ----- */
  .mastery-view, .stats-view { padding: 14px 10px; }
  .mastery-header { flex-direction: column; align-items: flex-start; gap: 10px; }
  .mastery-stats { gap: 14px; }
  .mastery-stats .v { font-size: 18px; }
  .publish-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 12px 14px;
  }
  .publish-bar .pb-gain { text-align: left; margin-right: 0; }
  .publish-btn { width: 100%; padding: 12px; }
  .patents-grid { grid-template-columns: 1fr; }
  .stats-block { padding: 14px; }
  .stats-block .rows { grid-template-columns: 1fr; }

  /* ----- ACHIEVEMENTS ----- */
  .ach-grid { grid-template-columns: 1fr; }
  .achievements-view { padding: 14px 10px; }
  .ach-page-title { font-size: 13px; letter-spacing: 2px; }
  .ach-page-progress { font-size: 14px; }

  /* ----- MODALS ----- */
  .modal-bg { padding: 12px; }
  .modal {
    min-width: 0;
    max-width: 100%;
    padding: 16px;
    /* No max-height / overflow-y here — .modal-bg owns the scroll now so mobile
       Safari doesn't clip the modal's head/foot when the URL bar is visible. */
  }

  /* ----- TOASTS ----- */
  .toast-stack {
    top: auto;
    bottom: 16px;
    right: 8px;
    left: 8px;
  }
  .toast { min-width: 0; max-width: 100%; font-size: 11px; }

  /* ----- TOUCH HIT TARGETS ----- */
  .slot, .mine-btn, .bm-btn, .tab, .btn,
  .rail-node, .patent, .support-btn {
    touch-action: manipulation;
  }
}

/* Landscape-phone specific — compact chrome to maximize play area */
@media (max-height: 500px) and (orientation: landscape) {
  #app {
    grid-template-rows: auto 1fr;
    height: 100vh;
    height: 100svh;
  }
  .topbar {
    flex-wrap: nowrap;
    min-height: 40px;
    padding: 2px 10px;
    gap: 10px;
  }
  .logo { font-size: 11px; letter-spacing: 2px; }
  .res-bar {
    order: 0;
    flex-basis: auto;
    flex: 1;
    overflow-x: auto;
    padding: 0;
  }
  .res {
    min-width: 88px;
    padding: 3px 8px 3px 6px;
  }
  .res .v { font-size: 13px; }
  .tabs { order: 1; margin-left: 0; }
  /* Landscape phone is still narrow enough that the full labels overflow the
     single-row topbar once every tab is unlocked. Use the short variants. */
  .tab .tab-full { display: none; }
  .tab .tab-short { display: inline; }
  /* Push settings past the tabs so it ends up on the far right of the row.
     Without this override, .topbar-settings keeps the default order: 0 and
     renders between .res-bar and .tabs (fixes itch.io landscape embed). */
  .topbar-settings { order: 2; margin-left: 0; }

  /* Landscape can still afford the sidebar if width is enough */
  .factory-view.active.has-sidebar {
    display: grid;
    grid-template-columns: 1fr 220px;
    flex-direction: row;
    overflow: hidden;
  }
  .factory-view.active.has-sidebar .factory { overflow: hidden; }
  .factory-view.active.has-sidebar .factory-scroll { flex: 1; overflow-y: auto; padding: 8px 10px 12px; }
  .factory-view.active.has-sidebar .sidebar {
    border-left: 1px solid var(--line);
    border-top: none;
    overflow-y: auto;
    padding: 10px;
  }

  .tree-header { flex-direction: row; padding: 6px 14px; }
  .rails-sheet { min-width: 860px; padding: 14px 16px 16px; }
}