/* ==========================================================================
   OCS Holdings — Theme layer (extends style.css)
   Studio-grade typography + section primitives, dark + serif accents.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --serif: 'Instrument Serif', 'Times New Roman', serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --max-w: 1100px;
  --max-w-content: 780px;
}

/* --- Page rhythm --- */
.t-section {
  padding: 120px 0;
  position: relative;
}
.t-section + .t-section { border-top: 1px solid var(--border); }
.t-container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
.t-container-narrow {
  width: 100%;
  max-width: var(--max-w-content);
  margin: 0 auto;
  padding: 0 24px;
}
.t-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.t-section-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 12px;
  display: block;
}
.t-section-title {
  font-family: var(--serif);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 400;
  letter-spacing: -1px;
  line-height: 1.1;
  color: var(--text);
  flex: 1;
  min-width: 280px;
}
.t-section-title em { font-style: italic; color: var(--accent-hover); }
.t-section-aside {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 340px;
  line-height: 1.65;
}

/* --- Hero (home page) --- */
.t-hero {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 80px 24px 64px;
  overflow: hidden;
  isolation: isolate;
  text-align: center;
}
.t-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 70% 60% at 50% 0%, rgba(99, 102, 241, 0.22), transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 90%, rgba(167, 139, 250, 0.14), transparent 70%);
}
.t-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 80%);
}
.t-hero-logo {
  width: clamp(120px, 18vw, 200px);
  height: auto;
  margin-bottom: 48px;
  opacity: 0;
  animation: tFadeUp 0.9s ease 0.1s forwards;
  filter: drop-shadow(0 0 40px rgba(99, 102, 241, 0.35));
}
.t-hero-tagline {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(34px, 5.5vw, 68px);
  line-height: 1.05;
  letter-spacing: -1.2px;
  color: var(--text);
  max-width: 18ch;
  margin: 0 auto;
  opacity: 0;
  animation: tFadeUp 1.1s ease 0.3s forwards;
}
.t-hero-tagline em {
  font-style: italic;
  background: linear-gradient(135deg, #a78bfa 0%, #818cf8 50%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.t-hero-tagline .t-period { color: var(--accent); font-style: normal; }
.t-scroll-cue {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation: tFadeIn 1.5s ease 1s forwards;
}
.t-scroll-cue::after {
  content: '';
  width: 1px;
  height: 24px;
  background: linear-gradient(to bottom, var(--text-dim), transparent);
}

@keyframes tFadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes tFadeIn {
  to { opacity: 1; }
}

/* --- Page hero (interior pages: about, products, legal) --- */
.t-page-hero {
  position: relative;
  padding: 120px 24px 80px;
  text-align: center;
  overflow: hidden;
  isolation: isolate;
}
.t-page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(99, 102, 241, 0.12), transparent 70%);
}
.t-page-hero-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 24px;
  display: block;
}
.t-page-hero-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(48px, 7vw, 84px);
  line-height: 1;
  letter-spacing: -1.5px;
  color: var(--text);
  margin-bottom: 24px;
}
.t-page-hero-title em { font-style: italic; color: var(--accent-hover); }
.t-page-hero-subtitle {
  font-family: var(--serif);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.5;
  color: var(--text-muted);
  font-style: italic;
  max-width: 640px;
  margin: 0 auto;
}

/* --- Product grid (home preview + products page) --- */
.t-products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.t-product {
  background: var(--bg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background var(--transition-base);
}
.t-product:hover { background: var(--surface); }
.t-product-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
}
.t-product-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 1px;
}
.t-product-name {
  font-family: var(--serif);
  font-size: 40px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -1px;
  color: var(--text);
}
.t-product-tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}
.t-product-desc {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  flex: 1;
}
.t-product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.t-product-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
  width: fit-content;
  transition: all var(--transition-fast);
}
.t-product-link:hover {
  color: var(--accent-hover);
  border-color: var(--accent);
}
.t-product-link svg { width: 12px; height: 12px; }

/* Detailed product (products page) */
.t-product-detail {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  padding: 56px 0;
  border-top: 1px solid var(--border);
}
.t-product-detail:first-of-type { border-top: none; padding-top: 0; }
.t-product-detail-side {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.t-product-detail-side .badge { width: fit-content; }
.t-product-detail-name {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -2px;
  color: var(--text);
}
.t-product-detail-tagline {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}
.t-product-detail-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.t-product-detail-body p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
}
.t-product-detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}
.t-product-detail-cta {
  margin-top: 12px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
@media (max-width: 720px) {
  .t-product-detail { grid-template-columns: 1fr; gap: 24px; }
  .t-product-detail-name { font-size: 44px; }
}

/* --- Studio / founders grid --- */
.t-studio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 56px;
}
@media (max-width: 800px) { .t-studio-grid { grid-template-columns: 1fr; } }
.t-founder {
  background: var(--bg);
  padding: 40px 32px;
  transition: background var(--transition-base);
}
.t-founder:hover { background: var(--surface); }
.t-founder-letter {
  font-family: var(--serif);
  font-size: 88px;
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -3px;
  color: var(--text);
  margin-bottom: 24px;
}
.t-founder-letter span { color: var(--accent); }
.t-founder-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.t-founder-role {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.t-belief {
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 400;
  line-height: 1.3;
  color: var(--text-secondary);
  letter-spacing: -0.5px;
  max-width: 760px;
}
.t-belief em { font-style: italic; color: var(--text); }

.t-stack {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.t-stack-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
}
.t-stack-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* --- About long-form blocks --- */
.t-about-block {
  margin-bottom: 64px;
}
.t-about-block:last-child { margin-bottom: 0; }
.t-about-block-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
  display: block;
}
.t-about-block-title {
  font-family: var(--serif);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 400;
  letter-spacing: -1px;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 24px;
}
.t-about-block-body {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-secondary);
}
.t-about-block-body p { margin-bottom: 16px; }
.t-about-block-body strong { color: var(--text); font-weight: 600; }
.t-about-block-body a { color: var(--accent-hover); border-bottom: 1px solid var(--accent-border); }
.t-about-block-body a:hover { color: var(--accent); border-color: var(--accent); }

/* --- Outro / contact block --- */
.t-outro {
  padding: 160px 0 120px;
  text-align: center;
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.t-outro::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(ellipse 60% 50% at 50% 50%, rgba(99, 102, 241, 0.1), transparent 70%);
}
.t-outro-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 24px;
  display: block;
}
.t-outro-title {
  font-family: var(--serif);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -1.5px;
  margin-bottom: 32px;
}
.t-outro-title em { font-style: italic; color: var(--accent-hover); }
.t-outro-sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.5;
}
.t-outro-sub em { color: var(--text); font-style: italic; }
.t-outro-mail {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 15px;
  color: var(--text-secondary);
  padding: 12px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: rgba(24, 24, 27, 0.5);
  transition: all var(--transition-fast);
}
.t-outro-mail:hover {
  color: var(--accent-hover);
  border-color: var(--accent-border);
  background: var(--accent-subtle);
}

/* --- Footer override --- */
.t-footer {
  padding: 36px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.t-footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
}
.t-footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.t-footer-brand img { width: 20px; height: auto; opacity: 0.7; }
.t-footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.t-footer-links a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.t-footer-links a:hover { color: var(--text); }

/* --- Legal pages refresh --- */
.t-legal {
  max-width: var(--max-w-content);
  margin: 0 auto;
  padding: 64px 24px 96px;
}
.t-legal-meta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 56px;
  display: block;
}
.t-legal h2 {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -0.5px;
  line-height: 1.2;
  color: var(--text);
  margin: 56px 0 16px;
}
.t-legal h2:first-of-type { margin-top: 0; }
.t-legal p,
.t-legal li {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 14px;
}
.t-legal ul { padding-left: 22px; margin-bottom: 16px; }
.t-legal li { margin-bottom: 8px; }
.t-legal strong { color: var(--text); font-weight: 600; }
.t-legal a { color: var(--accent-hover); border-bottom: 1px solid var(--accent-border); }
.t-legal a:hover { color: var(--accent); border-color: var(--accent); }

/* --- Auth pages refresh --- */
.t-auth {
  min-height: calc(100vh - var(--nav-height) - 100px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.t-auth::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(ellipse 50% 50% at 50% 30%, rgba(99, 102, 241, 0.1), transparent 70%);
}
.t-auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  box-shadow: var(--shadow-lg);
}
.t-auth-logo {
  width: 56px;
  height: auto;
  margin: 0 auto 24px;
  display: block;
}
.t-auth-title {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -1px;
  line-height: 1.1;
  text-align: center;
  color: var(--text);
  margin-bottom: 8px;
}
.t-auth-subtitle {
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 32px;
}
.t-auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0;
}
.t-auth-divider::before,
.t-auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.t-auth-divider span {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}
.t-auth-footer {
  text-align: center;
  margin-top: 28px;
  font-size: 14px;
  color: var(--text-muted);
}
.t-auth-footer a {
  color: var(--accent-hover);
  border-bottom: 1px solid var(--accent-border);
}
.t-auth-footer a:hover { color: var(--accent); border-color: var(--accent); }
.alert {
  display: none;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-bottom: 20px;
}
.alert-error {
  background: var(--error-subtle);
  border: 1px solid var(--error-border);
  color: #fca5a5;
}
.w-full { width: 100%; }

/* --- Founder cards (about page) --- */
.t-founders-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 64px;
}
@media (max-width: 720px) { .t-founders-grid { grid-template-columns: 1fr; } }
.t-founder-card {
  background: var(--bg);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: background var(--transition-base);
}
.t-founder-card:hover { background: var(--surface); }
.t-founder-card-role {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--accent-hover);
}
.t-founder-card-name {
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -1.5px;
  color: var(--text);
}
.t-founder-card-bio {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
  flex: 1;
}
.t-founder-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

/* --- Private alpha badge --- */
.badge-alpha {
  background: var(--accent-subtle);
  color: var(--accent-hover);
  border: 1px solid var(--accent-border);
}

/* --- Nav brand mark (added by app.js) --- */
.nav-brand-mark {
  width: 22px;
  height: auto;
  margin-right: 4px;
  filter: brightness(1.05);
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .t-section { padding: 80px 0; }
  .t-section-head { flex-direction: column; align-items: flex-start; gap: 16px; }
  .t-product { padding: 28px 24px; }
  .t-product-name { font-size: 32px; }
  .t-founder { padding: 28px 24px; }
  .t-founder-letter { font-size: 64px; }
  .t-auth-card { padding: 36px 24px; }
}