/* ==========================================================================
   /3d/<slug> SEO landing pages — premium obelisk-inspired layout
   Pulls design tokens from common.css. Designed to sit on top of the same
   3D canvas backdrop as the homepage (src/scenes/seo.js renders into the
   shared canvas, this CSS provides the foreground reading layer).
   ========================================================================== */

:root {
    --seo-bg-overlay: rgba(248, 252, 255, 0.78);
    --seo-bg-overlay-strong: rgba(255, 255, 255, 0.92);
    --seo-card-bg: rgba(255, 255, 255, 0.78);
    --seo-card-border: rgba(59, 130, 246, 0.18);
    --seo-card-border-hover: rgba(59, 130, 246, 0.5);
    --seo-divider: rgba(15, 23, 42, 0.08);
    --seo-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
    --seo-display: 'Space Grotesk', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --seo-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --seo-gold: #c9a35e;
    --seo-gold-bright: #e6c180;
    --seo-ink: #0f172a;
    --seo-ink-muted: #475569;
    --seo-ink-soft: #64748b;
}

html[data-theme="dark"], html.dark, body.dark, [data-theme="dark"] {
    --seo-bg-overlay: rgba(8, 10, 18, 0.72);
    --seo-bg-overlay-strong: rgba(8, 10, 18, 0.92);
    --seo-card-bg: rgba(13, 17, 28, 0.72);
    --seo-card-border: rgba(168, 197, 255, 0.16);
    --seo-card-border-hover: rgba(168, 197, 255, 0.5);
    --seo-divider: rgba(255, 255, 255, 0.08);
    --seo-ink: #e6edf7;
    --seo-ink-muted: #b6c1d4;
    --seo-ink-soft: #8a96aa;
}

/* Language toggle on /3d/<slug> pages stays visible (matches homepage layout).
   Behavior is overridden in _render.php inline JS to navigate to the hub filtered
   by the opposite language, instead of trying to translate fixed-language content. */

.seo-page {
    position: relative;
    z-index: 1;
    color: var(--seo-ink);
    font-family: var(--seo-body);
    line-height: 1.65;
    padding-top: 0;
}

.seo-page section {
    position: relative;
    padding: clamp(56px, 9vw, 120px) clamp(20px, 5vw, 56px);
}

.seo-page section > [class$="-inner"] {
    max-width: 980px;
    margin: 0 auto;
}

/* Reading-layer overlay so text remains legible above the 3D canvas */
.seo-page section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--seo-bg-overlay);
    pointer-events: none;
    z-index: -1;
}

.seo-page section.seo-hero::before,
.seo-page section.seo-cta-final::before {
    background: linear-gradient(180deg, transparent, var(--seo-bg-overlay) 40%, var(--seo-bg-overlay-strong));
}

/* ------------------------------ HERO ----------------------------------- */
.seo-hero {
    min-height: min(86vh, 720px);
    display: flex;
    align-items: center;
    padding-top: clamp(120px, 16vh, 180px) !important;
}

.seo-breadcrumbs {
    font-family: var(--seo-mono);
    font-size: 0.78rem;
    letter-spacing: 0.02em;
    color: var(--seo-ink-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-bottom: 1.2rem;
    align-items: center;
}

.seo-breadcrumbs a {
    color: var(--seo-ink-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.seo-breadcrumbs a:hover {
    color: var(--seo-gold);
}

.seo-breadcrumbs span[aria-hidden="true"] {
    opacity: 0.45;
}

.seo-eyebrow {
    display: inline-block;
    font-family: var(--seo-mono);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: var(--seo-gold);
    margin-bottom: 1.4rem;
}

.seo-h1 {
    font-family: var(--seo-display);
    font-size: clamp(2.4rem, 5.6vw, 4.4rem);
    line-height: 1.05;
    font-weight: 700;
    margin: 0 0 1.4rem;
    letter-spacing: -0.02em;
    color: var(--seo-ink);
    text-wrap: balance;
}

.seo-lead {
    font-size: clamp(1.05rem, 1.6vw, 1.3rem);
    color: var(--seo-ink-muted);
    max-width: 720px;
    margin: 0 0 2rem;
    line-height: 1.55;
    text-wrap: pretty;
}

.seo-cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    align-items: center;
}

.seo-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.95rem 1.5rem;
    border-radius: 999px;
    font-family: var(--seo-display);
    font-weight: 600;
    font-size: 0.98rem;
    text-decoration: none;
    transition: transform 0.18s ease, box-shadow 0.22s ease, background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease;
    border: 1px solid transparent;
}

.seo-cta--primary {
    background: linear-gradient(135deg, var(--seo-gold), var(--seo-gold-bright));
    color: #1a1404;
    box-shadow: 0 6px 18px rgba(201, 163, 94, 0.28);
}

.seo-cta--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(201, 163, 94, 0.38);
}

.seo-cta--ghost {
    color: var(--seo-ink);
    border-color: var(--seo-card-border);
    background: var(--seo-card-bg);
    backdrop-filter: blur(6px);
}

.seo-cta--ghost:hover {
    border-color: var(--seo-gold);
    color: var(--seo-gold);
    transform: translateY(-2px);
}

/* ------------------------------ INTRO ---------------------------------- */
.seo-intro-inner {
    max-width: 760px;
}

.seo-intro p {
    font-size: clamp(1.05rem, 1.5vw, 1.22rem);
    color: var(--seo-ink-muted);
    line-height: 1.7;
}

/* ------------------------------ BODY SECTIONS -------------------------- */
.seo-body {
    padding: 0 !important;
}

.seo-section {
    padding: clamp(48px, 7vw, 96px) clamp(20px, 5vw, 56px);
    border-top: 1px solid var(--seo-divider);
    position: relative;
}

.seo-section--b::before {
    background: var(--seo-bg-overlay-strong);
}

.seo-section-inner {
    max-width: 880px;
    margin: 0 auto;
}

.seo-section h2 {
    font-family: var(--seo-display);
    font-size: clamp(1.7rem, 3.4vw, 2.3rem);
    font-weight: 600;
    letter-spacing: -0.015em;
    margin: 0 0 1.4rem;
    color: var(--seo-ink);
    text-wrap: balance;
}

.seo-section-body p {
    font-size: 1.04rem;
    line-height: 1.78;
    color: var(--seo-ink-muted);
    margin: 0 0 1.1rem;
}

.seo-section-body strong {
    color: var(--seo-ink);
    font-weight: 600;
}

.seo-section-body code {
    background: rgba(59, 130, 246, 0.1);
    padding: 0.1rem 0.45rem;
    border-radius: 4px;
    font-family: var(--seo-mono);
    font-size: 0.92em;
    color: var(--seo-gold);
}

.seo-section-body ul,
.seo-section-body ol {
    padding-left: 1.4rem;
    margin: 0 0 1.2rem;
    color: var(--seo-ink-muted);
}

.seo-section-body li {
    margin: 0 0 0.55rem;
    line-height: 1.65;
}

.seo-section-body a {
    color: var(--seo-gold);
    text-decoration: none;
    border-bottom: 1px dashed transparent;
    transition: border-color 0.2s ease;
}

.seo-section-body a:hover {
    border-bottom-color: var(--seo-gold);
}

/* ------------------------------ FAQ ------------------------------------ */
.seo-faq {
    border-top: 1px solid var(--seo-divider);
}

.seo-faq h2 {
    font-family: var(--seo-display);
    font-size: clamp(1.7rem, 3.4vw, 2.3rem);
    margin: 0 0 1.8rem;
    text-align: center;
}

.seo-faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.seo-faq-item {
    border: 1px solid var(--seo-card-border);
    border-radius: 14px;
    background: var(--seo-card-bg);
    backdrop-filter: blur(8px);
    overflow: hidden;
    transition: border-color 0.22s ease;
}

.seo-faq-item[open] {
    border-color: var(--seo-card-border-hover);
}

.seo-faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 1.1rem 1.4rem;
    font-family: var(--seo-display);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--seo-ink);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.seo-faq-item summary::-webkit-details-marker {
    display: none;
}

.seo-faq-item summary::after {
    content: "+";
    font-family: var(--seo-mono);
    font-size: 1.35rem;
    color: var(--seo-gold);
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.seo-faq-item[open] summary::after {
    transform: rotate(45deg);
}

.seo-faq-answer {
    padding: 0 1.4rem 1.3rem;
    color: var(--seo-ink-muted);
    line-height: 1.7;
    font-size: 1rem;
}

/* ------------------------------ RELATED -------------------------------- */
.seo-related {
    border-top: 1px solid var(--seo-divider);
}

.seo-related h2 {
    font-family: var(--seo-display);
    font-size: clamp(1.7rem, 3.4vw, 2.3rem);
    margin: 0 0 1.8rem;
    text-align: center;
}

.seo-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.seo-related-card {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    padding: 1.4rem 1.4rem 1.2rem;
    border-radius: 14px;
    border: 1px solid var(--seo-card-border);
    background: var(--seo-card-bg);
    backdrop-filter: blur(8px);
    text-decoration: none;
    color: var(--seo-ink);
    transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
    position: relative;
    min-height: 140px;
}

.seo-related-card:hover {
    transform: translateY(-3px);
    border-color: var(--seo-card-border-hover);
    box-shadow: 0 12px 28px rgba(59, 130, 246, 0.12);
}

.seo-related-eyebrow {
    font-family: var(--seo-mono);
    font-size: 0.74rem;
    color: var(--seo-gold);
    letter-spacing: 0.04em;
}

.seo-related-h {
    font-family: var(--seo-display);
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.32;
    color: var(--seo-ink);
    text-wrap: balance;
}

.seo-related-arrow {
    position: absolute;
    bottom: 1rem;
    right: 1.2rem;
    color: var(--seo-gold);
    font-size: 1.15rem;
    transition: transform 0.22s ease;
}

.seo-related-card:hover .seo-related-arrow {
    transform: translateX(3px);
}

/* ------------------------------ FINAL CTA ------------------------------ */
.seo-cta-final {
    text-align: center;
    border-top: 1px solid var(--seo-divider);
}

.seo-cta-final h2 {
    font-family: var(--seo-display);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0 0 1rem;
    color: var(--seo-ink);
    text-wrap: balance;
}

.seo-cta-final p {
    color: var(--seo-ink-muted);
    font-size: clamp(1rem, 1.4vw, 1.18rem);
    max-width: 540px;
    margin: 0 auto 2rem;
}

.seo-cta-final .seo-cta-row {
    justify-content: center;
}

/* ------------------------------ REVEAL --------------------------------- */
[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

[data-reveal].is-revealed {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    [data-reveal] {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ------------------------------ HUB INDEX ------------------------------ */
.seo-hub {
    padding: clamp(120px, 16vh, 180px) clamp(20px, 5vw, 56px) clamp(80px, 12vw, 140px);
    position: relative;
    z-index: 1;
    color: var(--seo-ink);
}

.seo-hub::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--seo-bg-overlay);
    pointer-events: none;
    z-index: -1;
}

.seo-hub-inner {
    max-width: 1180px;
    margin: 0 auto;
}

.seo-hub-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto clamp(40px, 6vw, 72px);
}

.seo-hub-header .seo-eyebrow {
    margin-bottom: 1rem;
}

.seo-hub-header h1 {
    font-family: var(--seo-display);
    font-size: clamp(2.3rem, 5.4vw, 4rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin: 0 0 1.2rem;
    color: var(--seo-ink);
    text-wrap: balance;
}

.seo-hub-header p {
    font-size: clamp(1.05rem, 1.6vw, 1.25rem);
    color: var(--seo-ink-muted);
    line-height: 1.6;
}

.seo-hub-cat {
    margin: 0 0 clamp(36px, 5vw, 56px);
}

.seo-hub-cat-head {
    display: flex;
    align-items: baseline;
    gap: 0.85rem;
    margin: 0 0 1.4rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--seo-divider);
}

.seo-hub-cat-head h2 {
    font-family: var(--seo-display);
    font-size: clamp(1.4rem, 2.6vw, 1.8rem);
    font-weight: 600;
    color: var(--seo-ink);
    margin: 0;
}

.seo-hub-cat-head .seo-hub-cat-count {
    font-family: var(--seo-mono);
    font-size: 0.85rem;
    color: var(--seo-ink-soft);
}

.seo-hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.9rem;
}

.seo-hub-card {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    padding: 1.3rem 1.4rem 1.2rem;
    border-radius: 12px;
    border: 1px solid var(--seo-card-border);
    background: var(--seo-card-bg);
    backdrop-filter: blur(8px);
    text-decoration: none;
    color: var(--seo-ink);
    transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
    position: relative;
    min-height: 124px;
}

.seo-hub-card:hover {
    transform: translateY(-3px);
    border-color: var(--seo-card-border-hover);
    box-shadow: 0 10px 26px rgba(59, 130, 246, 0.12);
}

.seo-hub-card-eyebrow {
    font-family: var(--seo-mono);
    font-size: 0.72rem;
    color: var(--seo-gold);
    letter-spacing: 0.04em;
}

.seo-hub-card-h {
    font-family: var(--seo-display);
    font-size: 1.02rem;
    font-weight: 600;
    line-height: 1.32;
    color: var(--seo-ink);
    text-wrap: balance;
}

.seo-hub-card-desc {
    font-size: 0.88rem;
    color: var(--seo-ink-muted);
    line-height: 1.5;
    margin-top: 0.2rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.seo-hub-card-arrow {
    position: absolute;
    bottom: 0.95rem;
    right: 1.2rem;
    color: var(--seo-gold);
    font-size: 1.05rem;
    transition: transform 0.22s ease;
}

.seo-hub-card:hover .seo-hub-card-arrow {
    transform: translateX(3px);
}

@media (max-width: 640px) {
    .seo-hero {
        min-height: 78vh;
        padding-top: clamp(110px, 18vh, 150px) !important;
    }
    .seo-cta-row {
        flex-direction: column;
        align-items: stretch;
    }
    .seo-cta {
        justify-content: center;
    }
}