/* ── PDFApps website prototype — modern professional ── */

:root {
    /* Dark theme (default) */
    --bg: #0a0f14;
    --bg-elevated: #11181f;
    --bg-card: #161e26;
    --border: #1f2933;
    --border-strong: #2a3744;
    --text: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #8292a4;
    --accent: #10a597;
    --accent-hover: #0d8f83;
    --accent-glow: rgba(16, 165, 151, 0.15);
    --accent-2: #06b6d4;
    --header-bg: rgba(10, 15, 20, 0.85);
    --hover-bg: #1d2a33;
    --apple-icon-filter: invert(1);

    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --container: 1200px;
    --header-h: 64px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-lg: 0 24px 64px rgba(0,0,0,0.5);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, "SF Mono", Consolas, monospace;
}

[data-theme="light"] {
    --bg: #fafbfc;
    --bg-elevated: #ffffff;
    --bg-card: #ffffff;
    --border: #e5e9ed;
    --border-strong: #cdd5dc;
    --text: #0f172a;
    --text-secondary: #475569;
    --text-muted: #5b6b7d;
    --accent: #0d8f83;
    --accent-hover: #0b7a70;
    --accent-glow: rgba(13, 143, 131, 0.1);
    --accent-2: #0891b2;
    --header-bg: rgba(255, 255, 255, 0.85);
    --hover-bg: #f1f5f9;
    --apple-icon-filter: none;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 24px 64px rgba(15, 23, 42, 0.12);
}

/* Apple icon (Simple Icons) ships as black; invert in dark theme */
[data-theme="light"] img[src*="apple.svg"] {
    filter: none;
}
img[src*="apple.svg"] {
    filter: var(--apple-icon-filter);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background 0.2s ease, color 0.2s ease;
}

/* Background gradient effect */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 600px;
    background:
        radial-gradient(ellipse 800px 400px at 20% 0%, var(--accent-glow), transparent 60%),
        radial-gradient(ellipse 600px 400px at 80% 0%, rgba(6,182,212,0.08), transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

a {
    color: inherit;
    text-decoration: none;
}

img, svg {
    display: block;
    max-width: 100%;
}

/* ── Typography ─────────────────────────────────────────────── */

h1, h2, h3, h4 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: var(--text);
}

h1 {
    font-size: clamp(2.5rem, 5.5vw, 4.5rem);
    letter-spacing: -0.035em;
    line-height: 1.05;
}

h2 {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
}

h3 {
    font-size: 1.375rem;
}

p {
    color: var(--text-secondary);
}

.eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid rgba(16,165,151,0.25);
}

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

/* ── Header / nav ──────────────────────────────────────────── */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--header-bg);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
    transition: background 0.2s ease;
}

.site-header .container {
    height: var(--header-h);
    display: flex;
    align-items: center;
    gap: 32px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text);
}

.brand img {
    width: 28px;
    height: 28px;
    border-radius: 6px;
}

.nav-links {
    display: flex;
    gap: 4px;
    list-style: none;
    margin-left: 16px;
}

.nav-links a {
    display: inline-block;
    padding: 8px 14px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: all 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
    background: var(--hover-bg);
}

.nav-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    color: var(--text-secondary);
    border: 1px solid transparent;
    background: transparent;
    cursor: pointer;
    transition: all 0.15s ease;
}

.icon-btn:hover {
    color: var(--text);
    background: var(--bg-card);
    border-color: var(--border);
}

.icon-btn svg {
    width: 18px;
    height: 18px;
}

/* ── Buttons ───────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 10px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 10px 30px var(--accent-glow);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text);
    border-color: var(--border-strong);
}

.btn-secondary:hover {
    background: var(--bg-elevated);
    border-color: var(--text-muted);
}

.btn-ghost {
    color: var(--text-secondary);
    background: transparent;
}

.btn-ghost:hover {
    color: var(--text);
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
    border-radius: 12px;
}

/* ── Sections ─────────────────────────────────────────────── */

section {
    padding: 96px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 64px;
}

.section-header .eyebrow {
    margin-bottom: 16px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
}

/* ── Hero ─────────────────────────────────────────────────── */

.hero {
    padding: 120px 0 96px;
    text-align: center;
    position: relative;
}

.hero .eyebrow {
    margin-bottom: 24px;
}

.hero h1 {
    margin-bottom: 24px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.hero-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    font-size: 0.875rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.hero-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.hero-meta-item svg {
    width: 16px;
    height: 16px;
    color: var(--accent);
}

.hero-screenshot {
    margin-top: 80px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.hero-screenshot::before {
    content: '';
    position: absolute;
    inset: -1px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border-radius: var(--radius-xl);
    z-index: -1;
    opacity: 0.4;
    filter: blur(20px);
}

.hero-screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

/* ── Stats bar ────────────────────────────────────────────── */

.stats {
    padding: 64px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--bg-elevated);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

/* ── Features grid ────────────────────────────────────────── */

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.2s ease;
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--accent-glow);
    border: 1px solid rgba(16,165,151,0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.9375rem;
    line-height: 1.6;
    margin: 0;
}

/* ── Why grid (4 cards) ───────────────────────────────────── */

.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.why-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
}

.why-card .feature-icon {
    margin-bottom: 16px;
}

.why-card h3 {
    font-size: 1rem;
    margin-bottom: 6px;
}

.why-card p {
    font-size: 0.875rem;
    margin: 0;
}

/* ── Platforms strip ──────────────────────────────────────── */

.platforms {
    background: var(--bg-elevated);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
    align-items: center;
    text-align: center;
}

.platform-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 12px;
    border-radius: var(--radius);
    transition: background 0.15s ease;
    color: var(--text-secondary);
}

.platform-item:hover {
    background: var(--bg-card);
    color: var(--text);
}

.platform-item svg,
.platform-item img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.platform-item span {
    font-size: 0.8125rem;
    font-weight: 500;
}

/* ── CTA section ──────────────────────────────────────────── */

.cta-section {
    padding: 96px 0;
    text-align: center;
}

.cta-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 64px 48px;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 600px 300px at 50% 0%, var(--accent-glow), transparent 70%);
    pointer-events: none;
}

.cta-box > * {
    position: relative;
    z-index: 1;
}

.cta-box h2 {
    margin-bottom: 16px;
}

.cta-box p {
    font-size: 1.0625rem;
    margin-bottom: 32px;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

/* ── Footer ───────────────────────────────────────────────── */

.site-footer {
    border-top: 1px solid var(--border);
    padding: 64px 0 32px;
    background: var(--bg-elevated);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    font-size: 0.875rem;
    margin-top: 12px;
    max-width: 280px;
}

.footer-heading {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: color 0.15s ease;
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    font-size: 0.8125rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

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

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

/* ── Page header (non-landing pages) ──────────────────────── */

.page-header {
    padding: 96px 0 48px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.page-header .eyebrow {
    margin-bottom: 16px;
}

.page-header h1 {
    font-size: clamp(2rem, 4vw, 3.25rem);
    margin-bottom: 16px;
}

.page-header p {
    font-size: 1.125rem;
    max-width: 640px;
    margin: 0 auto;
}

/* ── Tools detailed list (features.html) ─────────────────── */

.tool-row {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 32px;
    padding: 32px 0;
    border-bottom: 1px solid var(--border);
}

.tool-row:last-child {
    border-bottom: none;
}

.tool-row .tool-icon {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.tool-row .tool-icon svg {
    width: 28px;
    height: 28px;
}

.tool-row h3 {
    font-size: 1.375rem;
    margin-bottom: 6px;
}

.tool-row p {
    font-size: 0.9375rem;
    max-width: 720px;
}

/* ── Download cards ───────────────────────────────────────── */

.os-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.os-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    text-align: center;
}

.os-card .os-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--accent);
    object-fit: contain;
}

.os-card h3 {
    font-size: 1.375rem;
    margin-bottom: 8px;
}

.os-card .os-version {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.os-card .btn {
    width: 100%;
    justify-content: center;
}

/* ── Linux distros grid ───────────────────────────────────── */

.distro-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.distro-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.distro-card .distro-icon {
    width: 40px;
    height: 40px;
    color: var(--accent);
    flex-shrink: 0;
    object-fit: contain;
}

.distro-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.distro-card .distro-desc {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.distro-card code {
    display: block;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 14px;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--accent);
    overflow-x: auto;
    white-space: nowrap;
}

/* ── Docs page (sidebar + content) ────────────────────────── */

.docs-layout {
    max-width: var(--container);
    margin: 0 auto;
    padding: 64px 24px;
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 64px;
    position: relative;
    z-index: 1;
}

.docs-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
    max-height: calc(100vh - var(--header-h) - 48px);
    overflow-y: auto;
}

.docs-sidebar h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-top: 24px;
    margin-bottom: 8px;
}

.docs-sidebar h4:first-child { margin-top: 0; }

.docs-sidebar ul {
    list-style: none;
    display: flex;
    flex-direction: column;
}

.docs-sidebar a {
    display: block;
    padding: 6px 12px;
    margin: 1px 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-radius: 6px;
    transition: all 0.15s ease;
}

.docs-sidebar a:hover {
    color: var(--text);
    background: var(--hover-bg);
}

.docs-content {
    min-width: 0;
}

.docs-content section {
    padding: 0;
    margin-bottom: 56px;
    scroll-margin-top: calc(var(--header-h) + 24px);
}

.docs-content h2 {
    font-size: 1.875rem;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.docs-content h3 {
    font-size: 1.125rem;
    margin-top: 24px;
    margin-bottom: 8px;
}

.docs-content p {
    margin-bottom: 16px;
    line-height: 1.7;
}

.docs-content code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 6px;
    color: var(--accent);
}

.docs-content kbd {
    font-family: var(--font-mono);
    font-size: 0.8em;
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-bottom-width: 2px;
    border-radius: 4px;
    padding: 2px 6px;
    color: var(--text);
    box-shadow: 0 1px 0 var(--border);
}

.docs-list {
    list-style: none;
    padding-left: 0;
    margin-bottom: 16px;
}

.docs-list li {
    padding: 6px 0 6px 24px;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.docs-list li::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

ol.docs-list {
    counter-reset: docs-counter;
}

ol.docs-list li {
    counter-increment: docs-counter;
    padding-left: 32px;
}

ol.docs-list li::before {
    content: counter(docs-counter);
    background: var(--accent-glow);
    border: 1px solid var(--accent);
    color: var(--accent);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    left: 0;
    top: 8px;
}

.docs-content a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-color: rgba(16, 165, 151, 0.3);
    text-underline-offset: 3px;
}

.docs-content a:hover {
    text-decoration-color: var(--accent);
}

.docs-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.docs-table th,
.docs-table td {
    text-align: left;
    padding: 12px 16px;
    font-size: 0.9375rem;
}

.docs-table thead {
    background: var(--bg-elevated);
}

.docs-table th {
    color: var(--text);
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}

.docs-table td {
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.docs-table tr:last-child td {
    border-bottom: none;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 12px;
}

.faq-item h3 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 1rem;
    color: var(--text);
}

.faq-item p {
    margin-bottom: 0;
    font-size: 0.9375rem;
}

/* ── Changelog releases ───────────────────────────────────── */

.release {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 24px;
}

.release-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.version-tag {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    background: var(--accent-glow);
    border: 1px solid rgba(16, 165, 151, 0.25);
    color: var(--accent);
    padding: 4px 12px;
    border-radius: 6px;
}

.release-date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.release-badge {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: white;
    padding: 3px 10px;
    border-radius: 999px;
}

.release h3 {
    font-size: 1.375rem;
    margin-bottom: 16px;
}

.release .docs-list {
    margin-bottom: 0;
}

/* ── Mobile menu ──────────────────────────────────────────── */

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: 8px;
    background: transparent;
    border: none;
    cursor: pointer;
    border-radius: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.25s ease;
}

.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── Scroll-reveal animations ────────────────────────────── */

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ── Responsive ───────────────────────────────────────────── */

@media (max-width: 960px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .why-grid { grid-template-columns: repeat(2, 1fr); }
    .platforms-grid { grid-template-columns: repeat(3, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .os-grid { grid-template-columns: 1fr; }
    .distro-grid { grid-template-columns: 1fr; }
    .distro-card { flex-direction: column; gap: 12px; padding: 16px; }
    .distro-card .distro-icon { width: 32px; height: 32px; }
    .distro-card code { font-size: 0.75rem; white-space: pre-wrap; word-break: break-all; overflow-x: hidden; }
    .mobile-menu-btn { display: flex; }
    .nav-links {
        display: none;
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--header-bg);
        backdrop-filter: saturate(180%) blur(12px);
        -webkit-backdrop-filter: saturate(180%) blur(12px);
        border-bottom: 1px solid var(--border);
        padding: 8px 16px 16px;
        margin: 0;
        gap: 0;
    }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 12px 16px; font-size: 1rem; border-radius: 8px; }
    .nav-actions .btn { display: none; }
    section { padding: 64px 0; }
    .hero { padding: 64px 0 48px; }
    .cta-box { padding: 48px 24px; }
    .docs-layout { grid-template-columns: 1fr; gap: 32px; padding: 32px 24px; }
    .docs-sidebar { position: static; max-height: none; }
}

@media (max-width: 560px) {
    .features-grid { grid-template-columns: 1fr; }
    .why-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-meta { flex-direction: column; gap: 12px; }
}