/* ═══════════════════════════════════════════════════════════
   Tutorials — Public site pages
   Matches the marketing site style (support.html, homepage)
   ═══════════════════════════════════════════════════════════ */

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

:root {
    color-scheme: light;
    --primary: #3B82F6;
    --primary-dark: #2563EB;
    --secondary: #8B5CF6;
    --dark: #0F172A;
    --light: #F8FAFC;
    --gray: #64748B;
    --gradient: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    --surface-primary: #ffffff;
    --surface-secondary: #F9FAFB;
    --border: #E2E8F0;
}

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

/* ─── Hero banner ─────────────────────────────────────────── */
.page-hero {
    background: var(--gradient);
    padding: 7rem 2rem 3rem;
    text-align: center;
    color: white;
}

.page-hero h1 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.page-hero p {
    opacity: 0.85;
    font-size: 1rem;
}

/* ─── Page content wrapper ────────────────────────────────── */
.page-content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 3rem 2rem 4rem;
}

/* ─── Search / filter ─────────────────────────────────────── */
.tutorials-search-wrapper {
    margin-bottom: 2rem;
    position: relative;
}

.tutorials-search-wrapper svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
    pointer-events: none;
}

.tutorials-search {
    width: 100%;
    max-width: 400px;
    padding: 0.625rem 0.875rem 0.625rem 2.5rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface-primary);
    color: var(--dark);
    font-size: 0.875rem;
    outline: none;
    transition: border-color 0.2s ease;
}

.tutorials-search:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* ─── Category sections ───────────────────────────────────── */
.tutorial-category {
    margin-bottom: 2.5rem;
}

.tutorial-category-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

/* ─── Card grid ───────────────────────────────────────────── */
.tutorials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 1.5rem;
}

.tutorial-card {
    background: var(--surface-primary);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.tutorial-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    transform: translateY(-2px);
}

.tutorial-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #EEF2FF, #F0EAFF);
}

.tutorial-card-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary);
}

.tutorial-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.tutorial-card-desc {
    font-size: 0.9rem;
    color: var(--gray);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 1rem;
}

.tutorial-card-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--gray);
}

.tutorial-card-meta svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.tutorial-tier-badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 9999px;
    background: #EEF2FF;
    color: var(--primary);
    border: 1px solid #BFDBFE;
}

.tutorial-card.hidden { display: none; }

/* ─── No results ──────────────────────────────────────────── */
.tutorials-no-results {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--gray);
    font-size: 0.95rem;
    display: none;
}
.tutorials-no-results.visible { display: block; }


/* ═══════════════════════════════════════════════════════════
   Individual Tutorial Pages
   ═══════════════════════════════════════════════════════════ */

/* ─── Breadcrumb ──────────────────────────────────────────── */
.tutorial-breadcrumb {
    font-size: 0.85rem;
    color: var(--gray);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.tutorial-breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}
.tutorial-breadcrumb a:hover { text-decoration: underline; }

.tutorial-breadcrumb .separator { color: var(--gray); }

/* ─── Two-column layout ───────────────────────────────────── */
.tutorial-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 2rem;
    align-items: start;
}

/* ─── Sticky TOC sidebar ──────────────────────────────────── */
.tutorial-sidebar {
    position: sticky;
    top: 5.5rem;
}

.tutorial-toc {
    background: var(--surface-primary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
}

.tutorial-toc-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray);
    margin-bottom: 0.5rem;
    padding: 0 0.5rem;
}

.tutorial-toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tutorial-toc-link {
    display: block;
    padding: 6px 10px;
    font-size: 0.825rem;
    color: var(--gray);
    text-decoration: none;
    border-radius: 6px;
    border-left: 2px solid transparent;
    transition: all 0.15s ease;
    line-height: 1.4;
}

.tutorial-toc-link:hover,
.tutorial-toc-link.active {
    color: var(--primary);
    background: rgba(59, 130, 246, 0.06);
    border-left-color: var(--primary);
}

/* ─── Content area ────────────────────────────────────────── */
.tutorial-content {
    background: var(--surface-primary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    min-width: 0;
}

.tutorial-content h1 {
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--dark);
    margin: 0 0 0.25rem;
}

.tutorial-content .tutorial-intro {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.tutorial-content h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark);
    margin: 2rem 0 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    scroll-margin-top: 6rem;
}

.tutorial-content h2:first-of-type {
    margin-top: 1rem;
    border-top: none;
    padding-top: 0;
}

/* ─── Step blocks ─────────────────────────────────────────── */
.tutorial-step { margin-bottom: 1.75rem; }

.tutorial-step-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.tutorial-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary-transparent);
    color: var(--color-primary);
    font-size: 0.825rem;
    font-weight: 600;
    flex-shrink: 0;
}

.tutorial-step-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
}

.tutorial-step-body {
    color: #475569;
    line-height: 1.7;
    font-size: 0.9rem;
    padding-left: calc(28px + 0.5rem);
}

.tutorial-step-body p { margin-bottom: 0.5rem; }
.tutorial-step-body ul,
.tutorial-step-body ol { margin: 0.5rem 0; padding-left: 1.25rem; }
.tutorial-step-body li { margin-bottom: 0.25rem; }

/* ─── Callout boxes ───────────────────────────────────────── */
.tutorial-callout {
    padding: 1rem 1.25rem;
    border-radius: 10px;
    margin: 1rem 0;
    font-size: 0.875rem;
    line-height: 1.6;
    display: flex;
    gap: 0.5rem;
}

.tutorial-callout svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

.tutorial-callout.info {
    background: #EFF6FF;
    border: 1px solid #BFDBFE;
    color: #1D4ED8;
}

.tutorial-callout.warning {
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    color: #92400E;
}

.tutorial-callout.tip {
    background: #ECFDF5;
    border: 1px solid #BBF7D0;
    color: #047857;
}

/* ─── Prev / Next navigation ──────────────────────────────── */
.tutorial-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    gap: 1rem;
}

.tutorial-nav-link {
    display: flex;
    flex-direction: column;
    gap: 2px;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 10px;
    transition: background 0.15s ease;
    max-width: 45%;
}

.tutorial-nav-link:hover {
    background: rgba(59, 130, 246, 0.06);
}

.tutorial-nav-link .nav-label {
    font-size: 0.75rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.tutorial-nav-link .nav-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
}

.tutorial-nav-link.next {
    text-align: right;
    margin-left: auto;
}

/* ─── Prerequisites list ──────────────────────────────────── */
.tutorial-prerequisites {
    background: var(--surface-secondary);
    border-radius: 10px;
    padding: 1rem 1.5rem;
    margin-bottom: 2rem;
}

.tutorial-prerequisites h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.tutorial-prerequisites ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tutorial-prerequisites li {
    font-size: 0.875rem;
    color: var(--gray);
    padding: 4px 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tutorial-prerequisites li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
}

/* ─── Code blocks (troubleshooting / custom tutorials) ─────── */
.tutorial-content pre {
    background: #0F172A;
    color: #E2E8F0;
    padding: 1rem 1.25rem;
    border-radius: 10px;
    overflow-x: auto;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.825rem;
    line-height: 1.6;
    margin: 0.75rem 0 1.25rem;
}

.tutorial-content pre code {
    background: transparent;
    color: inherit;
    padding: 0;
    border-radius: 0;
    font-size: inherit;
}

.tutorial-content :not(pre) > code {
    background: #F1F5F9;
    color: #0F172A;
    padding: 1px 6px;
    border-radius: 6px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.85em;
    border: 1px solid var(--border);
}

.tutorial-content p,
.tutorial-content li {
    color: #475569;
    line-height: 1.7;
    font-size: 0.925rem;
}

.tutorial-content p { margin: 0.5rem 0 1rem; }
.tutorial-content ul,
.tutorial-content ol { margin: 0.5rem 0 1.25rem; padding-left: 1.5rem; }
.tutorial-content li { margin-bottom: 0.4rem; }

.tutorial-content h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--dark);
    margin: 1.25rem 0 0.5rem;
}

/* Solution block — same visual weight as a step */
.tutorial-solution {
    background: var(--surface-secondary);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.25rem 1.5rem;
    margin: 1rem 0 1.5rem;
}

.tutorial-solution-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--primary);
    background: #EEF2FF;
    border: 1px solid #BFDBFE;
    padding: 2px 8px;
    border-radius: 9999px;
    margin-bottom: 0.5rem;
}

.tutorial-solution h3 {
    margin-top: 0;
}

/* ═══════════════════════════════════════════════════════════
   Responsive
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
    .page-hero h1 { font-size: 1.75rem; }
    .page-content { padding: 2rem 1.25rem 3rem; }

    .tutorial-layout { grid-template-columns: 1fr; }
    .tutorial-sidebar { position: static; }
    .tutorial-toc { margin-bottom: 1rem; }
    .tutorial-content { padding: 1.5rem; }
    .tutorial-content h1 { font-size: 1.35rem; }
    .tutorials-grid { grid-template-columns: 1fr; }
    .tutorials-search { max-width: 100%; }
    .tutorial-step-body { padding-left: 0; }

    .tutorial-nav { flex-direction: column; }
    .tutorial-nav-link { max-width: 100%; width: 100%; }
    .tutorial-nav-link.next { text-align: left; }
}