/* ===================================================================
   MAUI Sherpa — Design System
   
   Domain Exploration:
   
   DOMAIN CONCEPTS:
   1. Sherpa — guide, wayfinder, pathfinder through treacherous terrain
   2. Base camp — the central hub where all gear is organized before ascent
   3. Summit — the goal, the successful build/deploy/ship
   4. Trail markers — navigation aids, waypoints on the journey
   5. Gear — tools, equipment, the things you carry (SDK, emulators, keys)
   6. Expedition log — record of the journey (doctor results, logs)
   7. Ridge line — the edge between safety and exposure (dev vs prod)
   
   COLOR WORLD:
   1. Alpine purple — the color of mountain twilight, the mascot's suit (#7c3aed)
   2. Dawn orange — first light hitting the peak, warmth of the goggles (#f97316)
   3. Glacier blue — ice fields, clear sky at altitude (#38bdf8)
   4. Snowfield white — bright, clean, high-altitude light (#f8fafc)
   5. Granite dark — the rock face at night, deep shadow (#0f172a)
   6. Meadow green — the flower garland, success, safe passage (#22c55e)
   7. Dusk rose — the flowers, sunset alpenglow (#f472b6)
   
   SIGNATURE ELEMENT:
   The "trail marker" — a distinctive left-border accent on cards and sections
   that uses a gradient from alpine purple to dawn orange, echoing the sherpa's
   purple suit and orange goggles. This gradient marker appears nowhere else.
   
   DEFAULTS REJECTED:
   1. Generic blue hero gradient → Alpine twilight gradient (purple → deep blue)
   2. White card on gray background → Granite surfaces with whisper-quiet elevation
   3. System font stack → Inter for UI clarity + JetBrains Mono for code (tools deserve it)
   
   DEPTH STRATEGY: Borders-only with subtle surface shifts. This is a developer
   tool — clean, technical, but with warmth from the sherpa palette.
   
   =================================================================== */

/* ─── Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

/* ─── Root Tokens ─── */
:root {
    /* Brand */
    --alpine-purple: #7c3aed;
    --alpine-purple-light: #a78bfa;
    --alpine-purple-deep: #5b21b6;
    --dawn-orange: #f97316;
    --dawn-orange-light: #fb923c;
    --glacier-blue: #38bdf8;
    --meadow-green: #22c55e;
    --dusk-rose: #f472b6;

    /* Trail marker gradient */
    --trail-marker: linear-gradient(180deg, var(--alpine-purple), var(--dawn-orange));
    --hero-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 40%, #312e81 70%, #1e1b4b 100%);

    /* Spacing (8px base) */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */

    /* Border radius — slightly rounded, technical feel */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;

    /* Container widths */
    --max-width: 1200px;
    --max-width-narrow: 800px;
}

/* ─── Light Mode (default) ─── */
:root {
    /* Surfaces — snowfield light with subtle warmth */
    --surface-base: #f8fafc;
    --surface-1: #ffffff;
    --surface-2: #f1f5f9;
    --surface-overlay: rgba(255, 255, 255, 0.95);

    /* Text hierarchy */
    --ink-primary: #0f172a;
    --ink-secondary: #475569;
    --ink-tertiary: #94a3b8;
    --ink-muted: #cbd5e1;

    /* Borders — whisper-quiet */
    --ridge: rgba(15, 23, 42, 0.08);
    --ridge-subtle: rgba(15, 23, 42, 0.04);
    --ridge-strong: rgba(15, 23, 42, 0.15);

    /* Controls */
    --control-bg: #f1f5f9;
    --control-border: rgba(15, 23, 42, 0.12);
    --control-focus: var(--alpine-purple);

    /* Code blocks */
    --code-bg: #1e293b;
    --code-text: #e2e8f0;

    /* Semantic */
    --semantic-success: var(--meadow-green);
    --semantic-warning: var(--dawn-orange);
    --semantic-error: #ef4444;

    color-scheme: light;
}

/* ─── Dark Mode ─── */
@media (prefers-color-scheme: dark) {
    :root {
        /* Surfaces — granite dark with elevation via lightness */
        --surface-base: #0f172a;
        --surface-1: #1e293b;
        --surface-2: #334155;
        --surface-overlay: rgba(30, 41, 59, 0.95);

        /* Text hierarchy — adjusted for dark */
        --ink-primary: #f1f5f9;
        --ink-secondary: #94a3b8;
        --ink-tertiary: #64748b;
        --ink-muted: #475569;

        /* Borders */
        --ridge: rgba(248, 250, 252, 0.08);
        --ridge-subtle: rgba(248, 250, 252, 0.04);
        --ridge-strong: rgba(248, 250, 252, 0.15);

        /* Controls */
        --control-bg: rgba(248, 250, 252, 0.05);
        --control-border: rgba(248, 250, 252, 0.1);

        /* Code blocks */
        --code-bg: #0c1222;
        --code-text: #e2e8f0;

        color-scheme: dark;
    }
}

/* ─── 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-body);
    color: var(--ink-primary);
    background: var(--surface-base);
    line-height: 1.6;
    font-size: 16px;
}

a {
    color: var(--alpine-purple);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
    color: var(--alpine-purple-light);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ─── Typography ─── */
.text-display {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.text-h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.025em;
}

.text-h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.text-h3 {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.3;
}

.text-body {
    font-size: 1rem;
    line-height: 1.6;
}

.text-body-lg {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--ink-secondary);
}

.text-small {
    font-size: 0.875rem;
    line-height: 1.5;
}

.text-mono {
    font-family: var(--font-mono);
    font-size: 0.875em;
}

/* ─── Layout ─── */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container--narrow {
    max-width: var(--max-width-narrow);
}

.section {
    padding: var(--space-20) 0;
}

.section--compact {
    padding: var(--space-12) 0;
}

/* ─── Navigation ─── */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--surface-overlay);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--ridge);
    transition: background var(--duration-normal) var(--ease-out);
}

.nav__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav__brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: var(--ink-primary);
}

.nav__brand img {
    width: 36px;
    height: 36px;
}

.nav__brand span {
    font-weight: 700;
    font-size: 1.125rem;
    letter-spacing: -0.01em;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
}

.nav__links a {
    color: var(--ink-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--duration-fast) var(--ease-out);
}

.nav__links a:hover {
    color: var(--ink-primary);
}

.nav__github {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--ridge-strong);
    border-radius: var(--radius-sm);
    color: var(--ink-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--duration-fast) var(--ease-out);
}

.nav__github:hover {
    color: var(--ink-primary);
    border-color: var(--alpine-purple);
    background: rgba(124, 58, 237, 0.05);
}

.nav__github svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.nav__hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    color: var(--ink-primary);
}

.nav__hamburger svg {
    width: 24px;
    height: 24px;
}

/* ─── Hero ─── */
.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--hero-gradient);
    overflow: hidden;
    padding-top: 80px; /* nav height */
    padding-bottom: 200px; /* space for mountain divider */
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(249, 115, 22, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

/* Animated stars / particles */
.hero__stars {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero__stars span {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    animation: twinkle 3s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 1; }
}

.hero__content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: var(--space-12) var(--space-6);
    max-width: 900px;
}

.hero__mascot {
    width: 180px;
    height: 180px;
    margin: 0 auto var(--space-8);
    filter: drop-shadow(0 20px 40px rgba(124, 58, 237, 0.3));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.04em;
    color: #fff;
    margin-bottom: var(--space-6);
}

.hero__title span {
    background: linear-gradient(135deg, var(--alpine-purple-light), var(--dawn-orange-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin-bottom: var(--space-10);
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.hero__actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* ─── Buttons ─── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--duration-fast) var(--ease-out);
    text-decoration: none;
}

.btn--primary {
    background: var(--alpine-purple);
    color: #fff;
    box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
}

.btn--primary:hover {
    background: var(--alpine-purple-deep);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.45);
    color: #fff;
}

.btn--secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
}

.btn--secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    color: #fff;
}

.btn--outline {
    background: transparent;
    color: var(--alpine-purple);
    border: 1px solid var(--alpine-purple);
}

.btn--outline:hover {
    background: rgba(124, 58, 237, 0.05);
}

.btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: 1.05rem;
}

.btn svg,
.btn i {
    width: 18px;
    height: 18px;
}

/* ─── Feature Cards ─── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-6);
}

.feature-card {
    position: relative;
    background: var(--surface-1);
    border: 1px solid var(--ridge);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    transition: all var(--duration-normal) var(--ease-out);
    overflow: hidden;
}

/* Trail marker accent — the signature element */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--trail-marker);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.feature-card:hover {
    border-color: var(--ridge-strong);
    transform: translateY(-2px);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: var(--space-5);
}

.feature-card__icon--purple {
    background: rgba(124, 58, 237, 0.1);
    color: var(--alpine-purple);
}

.feature-card__icon--orange {
    background: rgba(249, 115, 22, 0.1);
    color: var(--dawn-orange);
}

.feature-card__icon--blue {
    background: rgba(56, 189, 248, 0.1);
    color: var(--glacier-blue);
}

.feature-card__icon--green {
    background: rgba(34, 197, 94, 0.1);
    color: var(--meadow-green);
}

.feature-card__icon--rose {
    background: rgba(244, 114, 182, 0.1);
    color: var(--dusk-rose);
}

.feature-card__title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: var(--space-2);
    letter-spacing: -0.01em;
}

.feature-card__desc {
    font-size: 0.925rem;
    color: var(--ink-secondary);
    line-height: 1.6;
}

/* ─── Mountain Skyline Divider ─── */
.mountain-divider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 2;
    line-height: 0;
    transform: translateY(-100%);
}

.mountain-divider svg {
    width: 100%;
    height: 180px;
    display: block;
}

/* ─── Screenshot Showcase ─── */
.showcase {
    background: var(--hero-gradient);
    position: relative;
}

.showcase::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
}

.showcase__title {
    color: #fff;
    text-align: center;
    margin-bottom: var(--space-12);
}

.showcase__subtitle {
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    font-size: 1.1rem;
    margin-top: var(--space-3);
}

/* Screenshot frame (direct app screenshot, no extra chrome) */
.screenshot-frame {
    margin: 0 auto;
    max-width: 1000px;
    line-height: 0;
}

.screenshot-frame img {
    width: 100%;
    border-radius: var(--radius-lg);
}

/* macOS window chrome mockup (legacy) */
.window-chrome {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4),
                0 0 0 1px rgba(255, 255, 255, 0.08);
    margin: 0 auto;
    max-width: 1000px;
}

.window-chrome__titlebar {
    background: #1c1c1e;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.window-chrome__dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.window-chrome__dot--red { background: #ff5f57; }
.window-chrome__dot--yellow { background: #febc2e; }
.window-chrome__dot--green { background: #28c840; }

.window-chrome__title {
    flex: 1;
    text-align: center;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 500;
}

.window-chrome__body {
    background: #1e293b;
    line-height: 0;
}

.window-chrome__body img {
    width: 100%;
}

/* ─── Screenshot Gallery ─── */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-6);
}

.gallery-item {
    cursor: pointer;
    transition: transform var(--duration-normal) var(--ease-out);
}

.gallery-item:hover {
    transform: scale(1.02);
}

.gallery-item .window-chrome {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.gallery-item__label {
    text-align: center;
    margin-top: var(--space-3);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 500;
}

/* ─── Platform Section ─── */
.platforms {
    text-align: center;
}

.platforms__grid {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    flex-wrap: wrap;
    margin-top: var(--space-10);
}

.platform-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6) var(--space-8);
    background: var(--surface-1);
    border: 1px solid var(--ridge);
    border-radius: var(--radius-lg);
    min-width: 160px;
    transition: all var(--duration-fast) var(--ease-out);
}

.platform-badge:hover {
    border-color: var(--alpine-purple);
    transform: translateY(-2px);
}

.platform-badge__icon {
    font-size: 2rem;
}

.platform-badge__name {
    font-weight: 600;
    font-size: 1rem;
}

.platform-badge__archs {
    font-size: 0.8rem;
    color: var(--ink-tertiary);
}

/* ─── Code Blocks ─── */
.code-block {
    background: var(--code-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.code-block__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.code-block__lang {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.code-block__copy {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-family: var(--font-body);
    transition: all var(--duration-fast);
}

.code-block__copy:hover {
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.8);
}

.code-block pre {
    padding: var(--space-5);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--code-text);
}

/* Inline code */
code:not([class]) {
    font-family: var(--font-mono);
    font-size: 0.85em;
    padding: 0.15em 0.4em;
    background: var(--control-bg);
    border-radius: 4px;
    border: 1px solid var(--ridge);
    color: var(--alpine-purple);
}

@media (prefers-color-scheme: dark) {
    code:not([class]) {
        color: var(--alpine-purple-light);
    }
}

/* Reset inline-code styles inside code blocks */
.code-block code {
    font-family: inherit;
    background: none;
    border: none;
    padding: 0;
    border-radius: 0;
    color: inherit;
    font-size: inherit;
}

/* Code syntax highlighting */
.token-keyword { color: #c792ea; }
.token-string { color: #c3e88d; }
.token-comment { color: #546e7a; font-style: italic; }
.token-function { color: #82aaff; }
.token-type { color: #ffcb6b; }
.token-number { color: #f78c6c; }
.token-attribute { color: #89ddff; }
.token-command { color: #82aaff; }
.token-flag { color: #89ddff; }
.token-param { color: #c3e88d; }

/* ─── Tabbed Panels (Getting Started / DevFlow) ─── */
.tab-group {
    display: flex;
    gap: var(--space-1);
    border-bottom: 1px solid var(--ridge);
    margin-bottom: var(--space-6);
}

.tab-group__tab {
    padding: var(--space-3) var(--space-5);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--ink-tertiary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--duration-fast);
}

.tab-group__tab:hover {
    color: var(--ink-secondary);
}

.tab-group__tab--active {
    color: var(--alpine-purple);
    border-bottom-color: var(--alpine-purple);
}

.tab-panel {
    display: none;
}

.tab-panel--active {
    display: block;
}

/* ─── Step Guide (DevFlow page) ─── */
.steps {
    counter-reset: step;
}

.step {
    position: relative;
    padding-left: var(--space-12);
    padding-bottom: var(--space-10);
    border-left: 2px solid var(--ridge);
    margin-left: var(--space-5);
}

.step:last-child {
    border-left-color: transparent;
    padding-bottom: 0;
}

.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: -17px;
    top: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--alpine-purple);
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step__title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.step__content {
    color: var(--ink-secondary);
    line-height: 1.7;
}

.step__content p {
    margin-bottom: var(--space-4);
}

/* ─── Section Headers ─── */
.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-4);
    background: rgba(124, 58, 237, 0.08);
    border: 1px solid rgba(124, 58, 237, 0.15);
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--alpine-purple);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-4);
}

@media (prefers-color-scheme: dark) {
    .section-header__badge {
        background: rgba(124, 58, 237, 0.15);
    }
}

.section-header__title {
    margin-bottom: var(--space-4);
}

.section-header__desc {
    color: var(--ink-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ─── Footer ─── */
.footer {
    background: var(--surface-1);
    border-top: 1px solid var(--ridge);
    padding: var(--space-12) 0 var(--space-8);
}

.footer__inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--space-10);
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.footer__brand img {
    width: 32px;
    height: 32px;
}

.footer__brand span {
    font-weight: 700;
    font-size: 1.1rem;
}

.footer__links {
    display: flex;
    gap: var(--space-10);
}

.footer__col h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-tertiary);
    margin-bottom: var(--space-4);
}

.footer__col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer__col a {
    color: var(--ink-secondary);
    font-size: 0.9rem;
}

.footer__col a:hover {
    color: var(--alpine-purple);
}

.footer__bottom {
    margin-top: var(--space-10);
    padding-top: var(--space-6);
    border-top: 1px solid var(--ridge-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--ink-tertiary);
}

/* ─── Scroll Reveal ─── */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}

.reveal--visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Lightbox ─── */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-8);
    cursor: zoom-out;
    backdrop-filter: blur(8px);
}

.lightbox--open {
    display: flex;
}

.lightbox img {
    max-width: 95%;
    max-height: 90vh;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.lightbox__close {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-2);
}

.lightbox__close:hover {
    color: white;
}

/* ─── Breadcrumb ─── */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.85rem;
    color: var(--ink-tertiary);
    margin-bottom: var(--space-8);
    padding-top: calc(64px + var(--space-8)); /* nav height + spacing */
}

.breadcrumb a {
    color: var(--ink-tertiary);
}

.breadcrumb a:hover {
    color: var(--alpine-purple);
}

.breadcrumb__sep {
    color: var(--ink-muted);
}

/* ─── Page Header (sub pages) ─── */
.page-header {
    padding-top: calc(64px + var(--space-12));
    padding-bottom: var(--space-10);
    border-bottom: 1px solid var(--ridge);
    margin-bottom: var(--space-12);
}

.page-header--hero {
    background: var(--hero-gradient);
    border-bottom: none;
    padding-top: calc(64px + var(--space-12));
    padding-bottom: var(--space-16);
}

.page-header--hero .page-header__title {
    color: #fff;
}

.page-header--hero .page-header__desc {
    color: rgba(255, 255, 255, 0.7);
}

.page-header__title {
    margin-bottom: var(--space-4);
}

.page-header__desc {
    color: var(--ink-secondary);
    font-size: 1.15rem;
    max-width: 640px;
    line-height: 1.7;
}

/* ─── Alert / Callout ─── */
.callout {
    padding: var(--space-5) var(--space-6);
    border-radius: var(--radius-md);
    border-left: 3px solid;
    margin: var(--space-6) 0;
}

.callout--info {
    background: rgba(56, 189, 248, 0.08);
    border-color: var(--glacier-blue);
}

.callout--tip {
    background: rgba(34, 197, 94, 0.08);
    border-color: var(--meadow-green);
}

.callout--warning {
    background: rgba(249, 115, 22, 0.08);
    border-color: var(--dawn-orange);
}

.callout__title {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--space-2);
}

.callout__body {
    font-size: 0.9rem;
    color: var(--ink-secondary);
    line-height: 1.6;
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav__links {
        display: none;
    }

    .nav__hamburger {
        display: block;
    }

    /* Mobile nav overlay */
    .nav__links--open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--surface-overlay);
        backdrop-filter: blur(16px);
        padding: var(--space-6);
        border-bottom: 1px solid var(--ridge);
        gap: var(--space-4);
    }

    .hero {
        min-height: auto;
        padding: calc(64px + var(--space-10)) var(--space-4) 220px;
    }

    .hero__mascot {
        width: 120px;
        height: 120px;
    }

    .hero__actions {
        flex-direction: column;
        align-items: center;
    }

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

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

    .platforms__grid {
        flex-direction: column;
        align-items: center;
    }

    .footer__inner {
        flex-direction: column;
    }

    .footer__links {
        flex-direction: column;
        gap: var(--space-6);
    }

    .footer__bottom {
        flex-direction: column;
        gap: var(--space-3);
        text-align: center;
    }

    .step {
        padding-left: var(--space-8);
        margin-left: var(--space-3);
    }
}

@media (max-width: 480px) {
    .section {
        padding: var(--space-12) 0;
    }

    .container {
        padding: 0 var(--space-4);
    }
}