:root {
    --orange: #ff6b35;
    --orange-dark: #e85d2c;
    --orange-light: rgba(255, 107, 53, 0.1);
    --dark: #1a1a2e;
    --darker: #16162a;
    --darkest: #111124;
    --light: #f0f0f5;
    --gray: #8888a0;
    --gray-light: #a8a8be;
    --card-bg: #22223a;
    --border: rgba(255, 255, 255, 0.06);
    --code-bg: #0d0d1a;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, sans-serif;
    background: var(--dark);
    color: var(--light);
    line-height: 1.7;
}

a { color: var(--orange); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--orange-dark); }

/* ── Navigation ── */

nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(22, 22, 42, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    padding: 14px 0;
}

nav .nav-inner {
    max-width: 1060px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--light);
    display: flex;
    align-items: center;
    gap: 8px;
}

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

nav .nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
}

nav .nav-links a {
    color: var(--gray);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* ── Container ── */

.container {
    max-width: 1060px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Page Content ── */

.page-content {
    padding-top: 80px;
}

/* ── Hero ── */

.hero {
    text-align: center;
    padding: 100px 20px 70px;
    background: linear-gradient(135deg, var(--darker) 0%, #1e1e3a 100%);
}

.hero img.app-icon {
    width: 100px;
    height: 100px;
    border-radius: 22px;
    margin-bottom: 24px;
    box-shadow: 0 8px 32px rgba(255, 107, 53, 0.3);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.hero p.subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    max-width: 620px;
    margin: 0 auto 28px;
}

.badges {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.badges img { height: 22px; }

.btn {
    display: inline-block;
    padding: 14px 32px;
    background: var(--orange);
    color: #fff !important;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s;
    margin: 0 6px;
}

.btn:hover {
    background: var(--orange-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--light) !important;
}

.btn-outline:hover {
    border-color: var(--orange);
    background: var(--orange-light);
    box-shadow: none;
}

/* ── Sections ── */

section { padding: 64px 0; }
section.alt { background: var(--darker); }

section h2 {
    font-size: 2rem;
    margin-bottom: 12px;
    text-align: center;
}

section h2 + p.section-desc {
    text-align: center;
    color: var(--gray);
    max-width: 580px;
    margin: 0 auto 40px;
    font-size: 1.05rem;
}

/* ── Page header (for sub-pages) ── */

.page-header {
    padding: 100px 0 50px;
    text-align: center;
    background: linear-gradient(135deg, var(--darker) 0%, #1e1e3a 100%);
    border-bottom: 1px solid var(--border);
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.page-header p {
    color: var(--gray);
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ── Cards ── */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 28px;
    border: 1px solid var(--border);
    transition: all 0.25s;
}

.card:hover {
    border-color: rgba(255, 107, 53, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.card .emoji { font-size: 2rem; margin-bottom: 12px; display: block; }
.card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.card p { color: var(--gray); font-size: 0.95rem; }

/* ── Code blocks ── */

.code-block {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 24px 28px;
    overflow-x: auto;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.88rem;
    line-height: 1.8;
    color: #c8c8e0;
    max-width: 720px;
    margin: 0 auto;
}

.code-block .comment { color: #6a9955; }
.code-block .keyword { color: #c586c0; }
.code-block .string { color: #ce9178; }
.code-block .type { color: #4ec9b0; }
.code-block .func { color: #dcdcaa; }
.code-block .cmd { color: var(--orange); }
.code-block .prop { color: #9cdcfe; }

/* ── Tables ── */

.doc-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
}

.doc-table th,
.doc-table td {
    text-align: left;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.doc-table th {
    color: var(--gray-light);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.doc-table td { font-size: 0.95rem; }
.doc-table code {
    background: var(--code-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: 'SF Mono', monospace;
    color: var(--orange);
}

/* ── Tech pills ── */

.tech-pills {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.tech-pill {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 10px 22px;
    font-size: 0.9rem;
    color: var(--gray-light);
}

/* ── Prose content ── */

.prose {
    max-width: 760px;
    margin: 0 auto;
}

.prose h2 {
    font-size: 1.6rem;
    margin: 48px 0 16px;
    text-align: left;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.prose h3 {
    font-size: 1.25rem;
    margin: 32px 0 12px;
    color: var(--orange);
}

.prose p {
    margin-bottom: 16px;
    color: var(--gray-light);
}

.prose ul, .prose ol {
    margin: 0 0 16px 24px;
    color: var(--gray-light);
}

.prose li { margin-bottom: 6px; }

.prose pre {
    margin: 16px 0 24px;
}

.prose .code-block {
    max-width: 100%;
}

/* ── API Reference cards ── */

.api-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 32px;
    margin-bottom: 32px;
}

.api-section h3 {
    font-size: 1.4rem;
    margin-bottom: 4px;
    color: var(--light);
}

.api-section .api-type {
    display: inline-block;
    background: var(--orange-light);
    color: var(--orange);
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.api-section p.api-desc {
    color: var(--gray);
    margin-bottom: 20px;
}

.api-section h4 {
    font-size: 0.9rem;
    color: var(--gray-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 20px 0 8px;
}

/* ── Architecture diagram ── */

.arch-box {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    font-family: 'SF Mono', monospace;
    font-size: 0.82rem;
    line-height: 1.6;
    overflow-x: auto;
    color: var(--gray);
    white-space: pre;
    max-width: 700px;
    margin: 0 auto;
}

/* ── Footer ── */

footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray);
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
}

/* ── Responsive ── */

@media (max-width: 640px) {
    .hero h1 { font-size: 2rem; }
    .hero p.subtitle { font-size: 1rem; }
    .page-header h1 { font-size: 1.8rem; }
    nav .nav-links { gap: 14px; }
    nav .nav-links a { font-size: 0.8rem; }
    .card-grid { grid-template-columns: 1fr; }
    .code-block { font-size: 0.8rem; padding: 16px; }
    .feature-grid { grid-template-columns: 1fr; }
}

/* ── Docs Page Layout ── */

.docs-page {
    max-width: 860px;
    margin: 100px auto 0;
    padding: 0 24px 60px;
}

.doc-section {
    margin-bottom: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--border);
}

.doc-section:last-child {
    border-bottom: none;
}

.doc-section h2 {
    font-size: 1.6rem;
    margin-bottom: 16px;
    color: var(--light);
}

.doc-section h3 {
    font-size: 1.1rem;
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--gray-light);
}

.doc-section p {
    margin-bottom: 12px;
    line-height: 1.7;
}

.doc-section ul {
    margin: 12px 0;
    padding-left: 24px;
}

.doc-section ul li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.doc-section pre {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    overflow-x: auto;
    margin: 16px 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.doc-section code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

.doc-section p code,
.doc-section li code,
.doc-section td code {
    background: var(--code-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.88rem;
    color: var(--orange);
}

/* ── Feature Cards ── */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin: 16px 0;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.feature-card h3 {
    font-size: 1rem;
    margin-top: 0;
    margin-bottom: 8px;
    color: var(--light);
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--gray-light);
    margin-bottom: 0;
}

/* ── Info Box ── */

.info-box {
    background: var(--card-bg);
    border-left: 3px solid var(--orange);
    border-radius: 0 8px 8px 0;
    padding: 16px 20px;
    margin: 16px 0;
    font-size: 0.9rem;
    color: var(--gray-light);
    line-height: 1.6;
}

.info-box strong {
    color: var(--orange);
}

/* ── Tag Grid ── */

.tag-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 12px 0;
}

.tag {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--gray-light);
}