/* ============================================================
   TAU INNER PAGES — Concept 3 (Editorial Signal) dark theme
   Depends on theme.css variables (--red, --charcoal, --page...)
   Charcoal page heroes, off-white content, red editorial accents.
   ============================================================ */

/* ===== NAVBAR LOGO (img fallback for inner pages) ===== */
.navbar-logo img { height: 20px; width: auto; }
.navbar-logo img.logo-dark { display: none; }
.navbar-logo img.logo-light { display: block; }
.navbar.scrolled .navbar-logo img.logo-dark { display: block; }
.navbar.scrolled .navbar-logo img.logo-light { display: none; }

/* ===== PAGE HERO — dark editorial ===== */
.page-hero {
    position: relative;
    background-color: var(--charcoal);
    color: #FFFFFF; overflow: hidden;
    padding: 180px 0 100px;
}
.page-hero::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 80% 10%, rgba(230, 57, 70, 0.10) 0%, transparent 55%);
    pointer-events: none;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero .hero-eyebrow { margin-bottom: 28px; }
.page-hero h1 {
    font-family: var(--serif);
    font-size: 64px; font-weight: 400; line-height: 1.06;
    letter-spacing: -0.01em; max-width: 820px; color: #FFFFFF;
}
.page-hero h1 em, .page-hero h1 .accent { font-style: italic; color: var(--red); }
.page-hero .hero-sub {
    font-size: 18px; line-height: 1.75;
    color: rgba(255, 255, 255, 0.65); max-width: 560px;
    margin-top: 28px;
}

/* ===== SECTION PRIMITIVES ===== */
.section { padding: var(--pad-lg) 0; }
.section-alt { background-color: var(--alt); }
.section-dark { background-color: var(--charcoal); color: #FFFFFF; }
.section-dark h2 { color: #FFFFFF; }
.section-header { max-width: 680px; margin-bottom: 64px; }
.section-header.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-header h2 { margin-bottom: 20px; }
.section-header p { font-size: 16px; line-height: 1.8; color: var(--muted); }
.section-dark .section-header p { color: rgba(255, 255, 255, 0.6); }
.prose, .prose p { font-size: 16px; line-height: 1.85; color: var(--muted); }
.prose p + p { margin-top: 22px; }

.split-grid { display: grid; grid-template-columns: 5fr 6fr; gap: 80px; align-items: start; }
.center-text { text-align: center; }
.narrow { max-width: 760px; margin-left: auto; margin-right: auto; }

/* ===== MISSION QUOTE ===== */
.mission-quote {
    border-top: 2px solid var(--red);
    border-bottom: 1px solid var(--line);
    background-color: var(--alt);
    padding: 28px 32px; margin: 28px 0;
}
.mission-quote p {
    font-family: var(--serif);
    font-size: 24px; font-style: italic; line-height: 1.5;
    color: var(--charcoal);
}

/* ===== EDITORIAL CARDS (trust / arch) ===== */
.card-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.info-card {
    background-color: var(--card);
    padding: 40px 32px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--red);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.info-card:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
.info-card h3 {
    font-family: var(--serif);
    font-size: 22px; font-weight: 400; line-height: 1.3;
    color: var(--charcoal); margin-bottom: 12px;
}
.info-card p { font-size: 15px; line-height: 1.75; color: var(--muted); }
.info-card .arch-desc { font-size: 14px; }

/* ===== TEAM ===== */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px 32px; }
.team-grid-2 { grid-template-columns: repeat(2, 1fr); max-width: 760px; margin-left: auto; margin-right: auto; }
.team-card { text-align: center; }
.team-photo {
    width: 100%; aspect-ratio: 4/5;
    background-color: #FFFFFF;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}
.team-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.team-card h3 {
    font-family: var(--serif);
    font-size: 20px; font-weight: 400;
    color: var(--charcoal); margin-bottom: 4px;
}
.team-role {
    display: block; font-size: 12px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.12em;
    color: var(--red); margin-bottom: 10px;
}
.team-bio { font-size: 13px; line-height: 1.65; color: var(--muted); }

/* ===== LOCATIONS ===== */
.locations-cities { display: flex; justify-content: center; gap: 32px; margin-top: 8px; }
.location-city {
    text-align: center; padding: 36px 48px;
    background-color: var(--charcoal-soft);
    border-top: 3px solid var(--red);
    min-width: 320px;
}
.location-city-name {
    font-family: var(--serif);
    font-size: 28px; color: #FFFFFF; margin-bottom: 8px;
}
.location-city-label { font-size: 13px; color: rgba(255, 255, 255, 0.55); line-height: 1.6; }

/* ===== CASE DETAIL ===== */
.case-client-tag {
    display: inline-block; padding: 7px 18px; border-radius: 100px;
    font-size: 12px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.08em;
    background-color: var(--red-tint); color: var(--red-deep);
    margin-bottom: 28px;
}
.case-detail-left h2 { font-size: 40px; margin-bottom: 18px; margin-top: 52px; }
.case-detail-left h2:first-of-type { margin-top: 0; }
.case-detail-left p { font-size: 16px; line-height: 1.85; color: var(--muted); }
.case-result-card {
    background-color: var(--charcoal);
    padding: 64px 48px; text-align: center; color: #FFFFFF;
    position: sticky; top: 120px; overflow: hidden;
}
.case-result-card::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, var(--red) 0%, transparent 100%);
    opacity: 0.06;
}
.case-result-big {
    font-family: var(--serif);
    font-size: 68px; line-height: 1; letter-spacing: -0.02em;
    position: relative; z-index: 1;
}
.case-result-big.before { color: rgba(255, 255, 255, 0.25); text-decoration: line-through; text-decoration-thickness: 2px; }
.case-result-big.after { color: var(--red); }
.case-result-arrow { font-size: 28px; color: var(--red); margin: 16px 0; position: relative; z-index: 1; }
.case-result-label { font-size: 14px; line-height: 1.6; color: rgba(255, 255, 255, 0.5); margin-top: 22px; position: relative; z-index: 1; }
.case-video { margin-top: 32px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.case-video video { width: 100%; height: auto; display: block; }

/* ===== FULL-WIDTH SECTION VIDEO BANNER ===== */
.section-video { margin-top: 72px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.section-video video { width: 100%; height: auto; display: block; }

/* ===== FULL-BLEED VIDEO (edge-to-edge, no container) ===== */
.section-video-fullbleed {
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    margin-top: 72px;
    overflow: hidden;
}
.section-video-fullbleed video {
    width: 100%; height: auto; display: block;
    border-radius: 0; box-shadow: none;
}

/* ===== CONTENT LABS / MEDIA CARDS ===== */
.filter-tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 56px; flex-wrap: wrap; }
.filter-tab {
    padding: 10px 26px; border-radius: 100px;
    font-family: var(--sans); font-size: 14px; font-weight: 500;
    border: 1px solid var(--line-strong);
    background: none; cursor: pointer; color: var(--muted);
    transition: all 0.2s ease;
}
.filter-tab.active { background-color: var(--charcoal); color: #FFFFFF; border-color: var(--charcoal); }
.filter-tab:hover:not(.active) { border-color: var(--charcoal); color: var(--charcoal); }
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.post-card {
    background-color: var(--card);
    border: 1px solid var(--line);
    overflow: hidden;
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.post-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.post-card-img {
    width: 100%; height: 200px; background-color: var(--alt);
    display: flex; align-items: center; justify-content: center;
}
.post-card-img svg { width: 40px; height: 40px; stroke: var(--muted); fill: none; stroke-width: 1; }
.post-card-img img { width: 100%; height: 100%; object-fit: cover; }
.post-card-body { padding: 26px 24px; }
.post-tag {
    display: inline-block; padding: 4px 12px; border-radius: 100px;
    font-size: 11px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.06em; margin-bottom: 14px;
}
.post-tag.blog { background-color: rgba(30, 30, 30, 0.08); color: var(--charcoal); }
.post-tag.research { background-color: var(--red-tint); color: var(--red-deep); }
.post-tag.media { background-color: rgba(230, 57, 70, 0.10); color: var(--red-deep); }
.post-card-body h3 {
    font-family: var(--serif);
    font-size: 19px; font-weight: 400; line-height: 1.35;
    color: var(--charcoal); margin-bottom: 10px;
}
.post-card-body h3 a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
.post-card-body h3 a:hover { color: var(--red); }
.post-card-body p { font-size: 14px; line-height: 1.65; color: var(--muted); margin-bottom: 16px; }
.post-meta { font-size: 12px; color: var(--muted); opacity: 0.7; }

/* ===== LABS ARTICLE EXPAND ===== */
.post-read-toggle {
    margin-top: 16px; padding: 8px 18px; border-radius: 100px;
    font-family: var(--sans); font-size: 13px; font-weight: 500;
    border: 1px solid var(--line-strong); background: none; cursor: pointer;
    color: var(--charcoal); transition: all 0.2s ease;
}
.post-read-toggle:hover, .post-read-toggle.active { background-color: var(--charcoal); color: #FFFFFF; border-color: var(--charcoal); }
.article-body {
    grid-column: 1 / -1;
    padding: 32px 28px; background-color: var(--alt);
    border: 1px solid var(--line);
}
.article-body[hidden] { display: none !important; }
.article-body h4 {
    font-family: var(--serif); font-size: 17px; font-weight: 400;
    color: var(--charcoal); margin: 26px 0 10px;
}
.article-body h4:first-child { margin-top: 0; }
.article-body p { font-size: 15px; line-height: 1.8; color: var(--muted); margin-bottom: 12px; }
.article-body ul { margin: 12px 0 16px; padding: 0; list-style: none; }
.article-body ul li {
    font-size: 15px; line-height: 1.7; color: var(--muted);
    padding-left: 20px; position: relative;
}
.article-body ul li + li { margin-top: 8px; }
.article-body ul li::before {
    content: ''; position: absolute; left: 2px; top: 11px;
    width: 5px; height: 5px; border-radius: 50%; background-color: var(--red);
}
.article-body .prompt-box {
    margin: 14px 0 18px; padding: 16px 20px;
    background-color: var(--card); border-left: 3px solid var(--red);
    font-size: 14px; line-height: 1.75; color: var(--charcoal);
}
.article-body .article-source { margin-top: 20px; font-size: 13px; }
.article-body .article-source a { color: var(--red-deep); text-decoration: underline; }
.article-body .article-source a:hover { text-decoration: none; }

/* ===== CONTACT ===== */
.contact-grid { display: grid; grid-template-columns: 6fr 5fr; gap: 96px; align-items: start; }
.contact-form { display: flex; flex-direction: column; gap: 22px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label {
    font-size: 12px; font-weight: 600; color: var(--charcoal);
    text-transform: uppercase; letter-spacing: 0.1em;
}
.form-group input, .form-group select, .form-group textarea {
    padding: 15px 18px; border: 1px solid var(--line-strong);
    border-radius: 8px; font-family: var(--sans);
    font-size: 15px; color: var(--text);
    background-color: var(--card);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--red);
    box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.10);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-submit {
    margin-top: 10px;
    display: inline-flex; align-items: center; justify-content: center;
    background-color: var(--red); color: #FFFFFF;
    border-radius: 100px; padding: 16px 42px;
    font-family: var(--sans); font-size: 15px; font-weight: 600;
    border: none; cursor: pointer; transition: all 0.25s ease;
    width: fit-content;
}
.form-submit:hover { background-color: var(--red-deep); transform: translateY(-2px); }
.contact-info-block { margin-bottom: 44px; }
.contact-info-label {
    font-size: 12px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.14em; color: var(--red); margin-bottom: 10px;
}
.contact-info-value { font-size: 16px; line-height: 1.65; color: var(--charcoal); }
.contact-info-value a { color: var(--charcoal); border-bottom: 1px solid var(--line-strong); transition: all 0.2s ease; }
.contact-info-value a:hover { color: var(--red); border-bottom-color: var(--red); }

/* ===== FOOTER (inner pages — no big CTA) ===== */
.footer.footer-inner { padding-top: 80px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 991px) {
    .page-hero { padding: 150px 0 76px; }
    .page-hero h1 { font-size: 48px; }
    .split-grid { grid-template-columns: 1fr; gap: 48px; }
    .card-grid-3 { grid-template-columns: 1fr; }
    .card-grid-2 { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
    .post-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; gap: 56px; }
    .case-detail-grid { grid-template-columns: 1fr; gap: 48px; }
    .case-result-card { position: static; }
    .locations-cities { flex-direction: column; align-items: center; gap: 20px; }
    .location-city { min-width: 0; width: 100%; max-width: 420px; }
}
@media (max-width: 767px) {
    .page-hero { padding: 130px 0 64px; }
    .page-hero h1 { font-size: 36px; }
    .page-hero .hero-sub { font-size: 16px; }
    .team-grid { grid-template-columns: 1fr 1fr; gap: 28px 16px; }
    .post-grid { grid-template-columns: 1fr; }
    .case-detail-left h2 { font-size: 32px; margin-top: 40px; }
    .case-result-big { font-size: 52px; }
    .mission-quote { padding: 22px 20px; }
    .mission-quote p { font-size: 20px; }
}

/* ===== LEGAL PROSE (Privacy Policy) ===== */
.legal-prose h2 {
    font-family: var(--serif);
    font-size: 28px; font-weight: 400; line-height: 1.3;
    letter-spacing: -0.01em; color: var(--charcoal);
    margin: 56px 0 16px;
}
.legal-prose h2:first-child { margin-top: 0; }
.legal-prose p { font-size: 16px; line-height: 1.85; color: var(--muted); }
.legal-prose p + p { margin-top: 16px; }
.legal-prose .legal-sub { font-weight: 600; color: var(--charcoal); margin: 26px 0 10px; }
.legal-prose ul { margin: 12px 0 0; padding: 0; list-style: none; }
.legal-prose ul li {
    font-size: 16px; line-height: 1.85; color: var(--muted);
    padding-left: 22px; position: relative;
}
.legal-prose ul li + li { margin-top: 10px; }
.legal-prose ul li::before {
    content: ''; position: absolute; left: 2px; top: 13px;
    width: 6px; height: 6px; border-radius: 50%; background-color: var(--muted);
}
.legal-prose a { color: var(--charcoal); text-decoration: underline; }
.legal-prose a:hover { text-decoration: none; }

/* ===== FOOTER LEGAL LINK ===== */
.footer-bottom a { color: rgba(255, 255, 255, 0.45); text-decoration: none; }
.footer-bottom a:hover { color: #FFFFFF; text-decoration: underline; }