/* ========================================
   DESIGN TOKENS
   ======================================== */
:root {
    /* Catppuccin Mocha */
    --color-bg:         #1e1e2e;
    --color-surface:    #181825;
    --color-surface-2:  #313244;
    --color-border:     rgba(205, 214, 244, 0.08);
    --color-border-hover: rgba(205, 214, 244, 0.16);
    --color-text:       #cdd6f4;
    --color-text-muted: #a6adc8;
    --color-text-dim:   #6c7086;
    --color-accent:     #fab387;
    --color-accent-2:   #f9e2af;
    --color-glow:       rgba(250, 179, 135, 0.12);
    --color-glow-strong: rgba(250, 179, 135, 0.30);
    --font:             'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius:           12px;
    --radius-lg:        20px;
    --max-width:        1120px;
    --transition:       0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--color-accent-2);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-text);
}

code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.85em;
    padding: 0.15em 0.45em;
    border-radius: 5px;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    color: var(--color-accent-2);
}

::selection {
    background: #cba6f7;
    color: #1e1e2e;
}

/* ========================================
   SCROLL REVEAL
   ======================================== */
[data-reveal] {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* stagger children */
.feature-grid [data-reveal]:nth-child(2) { transition-delay: 0.08s; }
.feature-grid [data-reveal]:nth-child(3) { transition-delay: 0.16s; }
.feature-grid [data-reveal]:nth-child(4) { transition-delay: 0.24s; }
.feature-grid [data-reveal]:nth-child(5) { transition-delay: 0.32s; }
.feature-grid [data-reveal]:nth-child(6) { transition-delay: 0.40s; }

/* ========================================
   NAV
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 24px;
    transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
    border-bottom: 1px solid transparent;
}

.nav--scrolled {
    background: rgba(24, 24, 37, 0.85);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom-color: var(--color-border);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.nav-logo-icon {
    width: 22px;
    height: 22px;
    color: var(--color-accent-2);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--color-text);
}

.nav-github {
    display: flex;
    align-items: center;
    opacity: 0.5;
    transition: opacity var(--transition) !important;
}

.nav-github:hover {
    opacity: 1;
}

/* ========================================
   SECTION SHARED
   ======================================== */
.section-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}

.section-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-accent-2);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ========================================
   HERO
   ======================================== */
.hero {
    position: relative;
    padding: 160px 24px 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
}

.hero-glow--1 {
    width: 600px;
    height: 600px;
    top: -150px;
    left: 50%;
    transform: translateX(-50%);
    background: radial-gradient(circle, var(--color-glow-strong), transparent 70%);
    animation: glowPulse 8s ease-in-out infinite alternate;
}

.hero-glow--2 {
    width: 400px;
    height: 400px;
    bottom: -50px;
    right: -100px;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.15), transparent 70%);
    animation: glowPulse 10s ease-in-out 2s infinite alternate;
}

@keyframes glowPulse {
    0%   { opacity: 0.6; transform: translateX(-50%) scale(1); }
    100% { opacity: 1;   transform: translateX(-50%) scale(1.15); }
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 70% 50% at 50% 40%, black 20%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 40%, black 20%, transparent 100%);
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 720px;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 6px 16px;
    border-radius: 50px;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    background: var(--color-surface);
    margin-bottom: 32px;
}

.hero-title {
    font-size: clamp(2.5rem, 6.5vw, 4.25rem);
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-title-accent {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-2) 50%, #c4b5fd 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 560px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-decoration: none;
}

.btn--primary {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 0 24px var(--color-glow), 0 2px 8px rgba(0,0,0,0.3);
}

.btn--primary:hover {
    background: var(--color-accent-2);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 0 40px var(--color-glow-strong), 0 4px 16px rgba(0,0,0,0.3);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

.btn--ghost:hover {
    color: var(--color-text);
    border-color: var(--color-border-hover);
    background: var(--color-surface);
    transform: translateY(-2px);
}

/* ========================================
   HERO VISUAL (MOCK WINDOW)
   ======================================== */
.hero-visual {
    position: relative;
    z-index: 1;
    margin-top: 64px;
    width: 100%;
    max-width: 680px;
    perspective: 1200px;
}

.mock-window {
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    box-shadow:
        0 4px 60px rgba(0, 0, 0, 0.5),
        0 0 80px var(--color-glow),
        inset 0 1px 0 rgba(255,255,255,0.04);
    overflow: hidden;
    animation: floatIn 1s cubic-bezier(0.16, 1, 0.3, 1) both;
    animation-delay: 0.3s;
}

@keyframes floatIn {
    from {
        opacity: 0;
        transform: translateY(40px) rotateX(4deg);
    }
    to {
        opacity: 1;
        transform: translateY(0) rotateX(0);
    }
}

.mock-titlebar {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 12px 16px;
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid var(--color-border);
}

.mock-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.mock-dot--red    { background: #f38ba8; }
.mock-dot--yellow { background: #f9e2af; }
.mock-dot--green  { background: #a6e3a1; }

.mock-titlebar-text {
    margin-left: 12px;
    font-size: 0.75rem;
    color: var(--color-text-dim);
    font-weight: 500;
}

.mock-body {
    display: flex;
    min-height: 220px;
}

.mock-sidebar {
    width: 200px;
    padding: 14px 12px;
    border-right: 1px solid var(--color-border);
    font-size: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mock-folder {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    border-radius: 6px;
    font-weight: 500;
    color: var(--color-text-muted);
}

.mock-folder--active {
    background: var(--color-glow);
    color: var(--color-accent-2);
}

.mock-folder--hidden {
    opacity: 0.15;
    text-decoration: line-through;
}

.mock-file {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    padding: 3px 8px 3px 28px;
    border-radius: 4px;
}

.mock-file--nested {
    color: var(--color-text);
}

.mock-editor {
    flex: 1;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mock-editor-line {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    font-family: 'SF Mono', 'Fira Code', monospace;
    line-height: 1.7;
}

.mock-editor-line--heading {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    font-family: var(--font);
    margin-bottom: 4px;
}

.mock-editor-line--tag {
    color: var(--color-accent-2);
    margin-top: 4px;
}

.mock-editor-line--empty {
    height: 12px;
}

.mock-statusbar {
    border-top: 1px solid var(--color-border);
    padding: 6px 16px;
    font-size: 0.7rem;
    color: var(--color-text-dim);
    background: rgba(255,255,255,0.015);
}

.mock-statusbar-vault {
    color: var(--color-accent-2);
    font-weight: 600;
}

/* ========================================
   FEATURES
   ======================================== */
.features {
    padding: 120px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    padding: 32px 28px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.feature-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2), 0 0 0 1px var(--color-border-hover);
}

.feature-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--color-glow);
    color: var(--color-accent-2);
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 20px;
    height: 20px;
}

.feature-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* ========================================
   HOW IT WORKS
   ======================================== */
.how {
    padding: 100px 0 120px;
}

.steps-timeline {
    max-width: 560px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.step {
    display: flex;
    gap: 24px;
}

.step-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

.step-num {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--color-accent);
    color: #fff;
    font-weight: 800;
    font-size: 0.9rem;
    box-shadow: 0 0 20px var(--color-glow);
    flex-shrink: 0;
}

.step-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(to bottom, var(--color-accent), var(--color-border));
    margin: 8px 0;
    min-height: 40px;
}

.step-content {
    padding-bottom: 40px;
}

.step-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.step-content p {
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* ========================================
   INSTALL
   ======================================== */
.install {
    padding: 100px 0 140px;
}

.install-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 760px;
    margin: 0 auto;
}

.install-card {
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    transition: border-color var(--transition), transform var(--transition);
}

.install-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-3px);
}

.install-card-header {
    margin-bottom: 20px;
}

.install-card-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent-2);
    background: var(--color-glow);
    padding: 3px 10px;
    border-radius: 50px;
    margin-bottom: 10px;
}

.install-card h3 {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.install-card ol {
    list-style: none;
    counter-reset: steps;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.install-card ol li {
    counter-increment: steps;
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    padding-left: 28px;
    position: relative;
}

.install-card ol li::before {
    content: counter(steps);
    position: absolute;
    left: 0;
    top: 1px;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-accent-2);
    background: var(--color-glow);
    border-radius: 50%;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 40px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-logo-icon {
    color: var(--color-accent-2);
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

.footer-copy a {
    color: var(--color-text-muted);
}

.footer-copy a:hover {
    color: var(--color-text);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 900px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 680px) {
    .nav-links a:not(.nav-github) {
        display: none;
    }

    .hero {
        padding: 120px 20px 60px;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .install-grid {
        grid-template-columns: 1fr;
    }

    .mock-sidebar {
        width: 140px;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}