/* ============================================
   Docs / Tutorial Page Styles
   ============================================ */

/* ---- Hero ---- */
.docs-hero {
    padding-top: 160px;
    padding-bottom: 80px;
    text-align: center;
}

.docs-hero .badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-heading);
    background: rgba(79, 70, 229, 0.06);
    border: 1px solid rgba(79, 70, 229, 0.15);
    color: var(--accent-primary);
    margin-bottom: 28px;
}

.docs-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.15;
    color: var(--text-main);
    margin-bottom: 24px;
}

.docs-hero h1 span.gradient-text {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.docs-hero .hero-desc {
    font-size: 1.15rem;
    color: var(--text-sub);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 100px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-heading);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #fff;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 100px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-heading);
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.08);
    color: var(--text-main);
    text-decoration: none;
    backdrop-filter: blur(12px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
}

/* ---- Quick Nav Cards ---- */
.quick-nav-section {
    padding-bottom: 80px;
}

.quick-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.quick-nav-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 28px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    text-decoration: none;
    color: var(--text-main);
    backdrop-filter: blur(16px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--glass-shadow);
}

.quick-nav-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px -10px rgba(79, 70, 229, 0.15);
    border-color: rgba(79, 70, 229, 0.2);
}

.quick-nav-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(14, 165, 233, 0.1));
    color: var(--accent-primary);
}

.quick-nav-card h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.quick-nav-card p {
    font-size: 0.82rem;
    color: var(--text-sub);
    line-height: 1.4;
}

/* ---- Docs Layout ---- */
.docs-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 48px;
    padding-bottom: 120px;
    align-items: start;
}

/* ---- Sidebar TOC ---- */
.docs-sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-toc {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 28px;
    backdrop-filter: blur(16px);
    box-shadow: var(--glass-shadow);
}

.sidebar-toc h4 {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.toc-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.toc-list li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 12px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-sub);
    text-decoration: none;
    transition: all 0.2s ease;
}

.toc-list li a:hover,
.toc-list li a.active {
    background: rgba(79, 70, 229, 0.06);
    color: var(--accent-primary);
}

.toc-list li a i {
    font-size: 0.8rem;
    width: 16px;
    text-align: center;
    color: var(--text-muted);
}

.toc-list li a:hover i,
.toc-list li a.active i {
    color: var(--accent-primary);
}

.toc-divider {
    height: 1px;
    background: rgba(0, 0, 0, 0.04);
    margin: 8px 0;
}

/* ---- Doc Content ---- */
.docs-content {
    min-width: 0;
    margin-top: -220px;
}

.doc-section {
    margin-bottom: 80px;
}

.section-heading {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.section-num {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 700;
    font-family: var(--font-heading);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #fff;
    flex-shrink: 0;
}

.section-heading h2 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-main);
}

.doc-section > p,
.doc-subsection > p {
    font-size: 1rem;
    color: var(--text-sub);
    line-height: 1.9;
    margin-bottom: 24px;
}

.doc-subsection {
    margin-bottom: 40px;
}

.doc-subsection h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.doc-subsection h3 i {
    color: var(--accent-primary);
    font-size: 1rem;
}

/* ---- Steps ---- */
.steps-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    counter-reset: step-counter;
}

.step-item {
    display: flex;
    gap: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 20px 24px;
    backdrop-filter: blur(12px);
    transition: all 0.3s ease;
}

.step-item:hover {
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.08);
    border-color: rgba(79, 70, 229, 0.15);
}

.step-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    font-family: var(--font-heading);
    flex-shrink: 0;
    margin-top: 2px;
}

.step-body h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 6px;
}

.step-body p {
    font-size: 0.92rem;
    color: var(--text-sub);
    line-height: 1.7;
    margin-bottom: 0;
}

.step-body a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
}

.step-body a:hover { text-decoration: underline; }

/* ---- Code Block ---- */
.code-block {
    background: #0F172A;
    border-radius: 16px;
    overflow: hidden;
    margin: 24px 0;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
}

.code-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.04);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.code-block-lang {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.code-copy-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-body);
}

.code-copy-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.8);
}

.code-copy-btn.copied {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.3);
    color: #10B981;
}

.code-block pre {
    padding: 20px 24px;
    overflow-x: auto;
    margin: 0;
}

.code-block code {
    font-family: var(--font-mono);
    font-size: 0.88rem;
    line-height: 1.8;
    color: #E2E8F0;
}

.code-comment { color: #64748B; }
.code-key { color: #93C5FD; }
.code-string { color: #6EE7B7; }
.code-number { color: #FCD34D; }
.code-bool { color: #F9A8D4; }
.code-section { color: #A78BFA; font-weight: 600; }

/* ---- Info / Warning / Tip Callouts ---- */
.callout {
    display: flex;
    gap: 16px;
    padding: 20px 24px;
    border-radius: 14px;
    margin: 24px 0;
    font-size: 0.95rem;
    line-height: 1.7;
}

.callout-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.callout-content strong {
    display: block;
    font-weight: 700;
    margin-bottom: 4px;
    font-family: var(--font-heading);
}

.callout.info {
    background: rgba(14, 165, 233, 0.06);
    border: 1px solid rgba(14, 165, 233, 0.2);
    color: var(--text-sub);
}
.callout.info .callout-icon { color: var(--accent-secondary); }
.callout.info .callout-content strong { color: var(--accent-secondary); }

.callout.tip {
    background: rgba(16, 185, 129, 0.06);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--text-sub);
}
.callout.tip .callout-icon { color: #10B981; }
.callout.tip .callout-content strong { color: #10B981; }

.callout.warning {
    background: rgba(245, 158, 11, 0.06);
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: var(--text-sub);
}
.callout.warning .callout-icon { color: #F59E0B; }
.callout.warning .callout-content strong { color: #F59E0B; }

/* ---- Platform Tabs ---- */
.platform-tabs {
    margin: 24px 0;
}

.tab-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-heading);
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(0, 0, 0, 0.08);
    color: var(--text-sub);
    cursor: pointer;
    transition: all 0.25s ease;
    backdrop-filter: blur(10px);
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-main);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---- Feature Compare Table ---- */
.compare-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 24px 0;
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
}

.compare-table {
    width: 100%;
    min-width: 520px;
    border-collapse: collapse;
    margin: 0;
    border-radius: 16px;
    overflow: hidden;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: none;
}

.compare-table th {
    padding: 16px 20px;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-muted);
    background: rgba(15, 23, 42, 0.02);
    text-align: left;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.compare-table td {
    padding: 16px 20px;
    font-size: 0.95rem;
    color: var(--text-sub);
    border-bottom: 1px solid rgba(0, 0, 0, 0.03);
    vertical-align: middle;
}

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

.compare-table td:first-child {
    font-weight: 600;
    color: var(--text-main);
    font-family: var(--font-heading);
}

.badge-green {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-blue {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(14, 165, 233, 0.1);
    color: #0284C7;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.badge-gray {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(148, 163, 184, 0.12);
    color: var(--text-sub);
    border: 1px solid rgba(148, 163, 184, 0.2);
}

/* ---- FAQ Accordion ---- */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    backdrop-filter: blur(12px);
    transition: box-shadow 0.3s ease;
    padding: 0; /* Clear padding from main.css */
}

.faq-item:hover {
    box-shadow: 0 6px 24px rgba(79, 70, 229, 0.07);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px; /* Reduced from 20px 24px */
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-main);
    transition: color 0.2s ease;
    gap: 16px;
}

.faq-question:hover { color: var(--accent-primary); }

.faq-question .faq-icon {
    font-size: 0.8rem; /* Slightly smaller icon */
    color: var(--text-muted);
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.faq-item.open .faq-question { color: var(--accent-primary); }
.faq-item.open .faq-question .faq-icon { transform: rotate(180deg); }

.faq-answer {
    padding: 0 20px 16px; /* Reduced from 0 24px 20px */
    font-size: 0.95rem;
    color: var(--text-sub);
    line-height: 1.7; /* Slightly tighter line height */
    display: none;
    border-top: 1px solid rgba(0, 0, 0, 0.04);
    margin-top: -4px;
    padding-top: 12px; /* Reduced from 16px */
}

.faq-item.open .faq-answer { display: block; }

/* ---- Inline code ---- */
code.inline {
    font-family: var(--font-mono);
    font-size: 0.88em;
    padding: 2px 8px;
    border-radius: 6px;
    background: rgba(79, 70, 229, 0.08);
    color: var(--accent-primary);
    border: 1px solid rgba(79, 70, 229, 0.12);
}

/* ---- Download CTA Banner ---- */
.docs-cta {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(14, 165, 233, 0.08));
    border: 1px solid rgba(79, 70, 229, 0.15);
    border-radius: 24px;
    padding: 48px 40px;
    text-align: center;
    margin: 48px 0;
    backdrop-filter: blur(12px);
}

.docs-cta h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.docs-cta p {
    font-size: 1rem;
    color: var(--text-sub);
    margin-bottom: 28px;
}

/* ---- Progress indicator ---- */
.read-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .docs-layout {
        grid-template-columns: 220px 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .docs-hero {
        padding-top: 120px;
        padding-bottom: 60px;
    }

    .docs-hero h1 { font-size: 2rem; }

    .docs-layout {
        grid-template-columns: 1fr;
    }

    .docs-sidebar {
        position: static;
        order: -1;
    }

    .sidebar-toc {
        padding: 20px;
    }

    .toc-list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 6px;
    }

    .toc-list li a {
        padding: 7px 12px;
        font-size: 0.82rem;
        border-radius: 100px;
        background: rgba(79, 70, 229, 0.04);
    }

    .toc-divider { display: none; }

    .quick-nav-grid {
        grid-template-columns: 1fr 1fr;
    }

    .section-heading h2 { font-size: 1.3rem; }

    .code-block pre { padding: 16px; }
    .code-block code { font-size: 0.82rem; }

    .docs-cta { padding: 32px 24px; }
    .docs-cta h3 { font-size: 1.25rem; }

    .compare-table { font-size: 0.88rem; }
    .compare-table th, .compare-table td { padding: 12px 14px; }

    .tab-buttons { gap: 6px; }
    .tab-btn { padding: 8px 14px; font-size: 0.85rem; }

    .docs-content { margin-top: 0; }
}

@media (max-width: 480px) {
    .quick-nav-grid {
        grid-template-columns: 1fr;
        padding: 0 25px;
    }
    .compare-table-wrap { margin: 0 25px; }
    .docs-cta { margin: 0 25px; }
    .docs-hero-actions { flex-direction: column; align-items: center; }
    .step-item { flex-direction: column; gap: 12px; }
}