/*
  turing.css — site-wide design system for turing.london
  Dark, silver-on-black, derived from the Turing AI OS boot orb.

  Loaded on every page from base.html, after the legacy stylesheets so it wins.
  Page-specific styles (turingos.css, computers.css) build on these tokens.
*/

:root {
  --t-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --t-mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  --t-black: #05060a;
  --t-ink: #0a0c12;
  --t-surface: #0f1219;
  --t-surface-2: #151924;
  --t-line: rgba(255, 255, 255, 0.09);
  --t-line-strong: rgba(255, 255, 255, 0.18);

  --t-text: #f4f6fb;
  --t-muted: #99a1b3;
  --t-dim: #6b7386;

  --t-blue: #4c8dff;
  --t-violet: #a06cff;
  --t-teal: #2fd8c0;
  --t-warm: #ffb27a;
  --t-red: #ff6b6b;
  --t-arc: linear-gradient(90deg, #2fd8c0, #4c8dff, #a06cff, #ffb27a);
  --t-silver: linear-gradient(180deg, #ffffff 0%, #cdd3e0 55%, #8c93a5 100%);

  --t-radius: 14px;
  --t-radius-lg: 22px;
  --t-glow: 0 0 80px rgba(76, 141, 255, 0.18);

  --t-nav-h: 74px;
}

/* ── Shell ─────────────────────────────────────────────── */

html {
  height: auto !important;
  background: var(--t-black);
  scroll-behavior: smooth;
}

/* Column flex keeps the footer at the bottom of short pages. */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0 !important;
  background: var(--t-black);
  color: var(--t-text);
  font-family: var(--t-font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body > .content-wrapper { flex: 1 0 auto; }
body > .site-footer { flex-shrink: 0; }

::selection {
  background: rgba(76, 141, 255, 0.35);
  color: #fff;
}

/* height:auto keeps intrinsic ratio when markup carries width/height attributes */
img { max-width: 100%; height: auto; }

a { color: var(--t-blue); }
a:hover { color: #7aa9ff; }

code, kbd, samp { font-family: var(--t-mono); font-size: 0.92em; }

h1, h2, h3, h4 {
  letter-spacing: -0.025em;
  color: var(--t-text);
}

/* ── Navbar ────────────────────────────────────────────── */

.navbar-wrapper {
  position: sticky !important;
  top: 0;
  z-index: 2000;
  background: rgba(5, 6, 10, 0.86) !important;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--t-line);
  transition: background 0.3s ease;
}

.top-nav,
.top-nav.scrolled,
.top-nav .container-fluid {
  position: static !important;
  min-height: var(--t-nav-h);
  background: transparent !important;
  background-image: none !important;
  border: none !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  font-family: var(--t-font) !important;
}

.top-nav .container-fluid {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-logo {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.nav-logo-link { text-decoration: none; }
.nav-logo-link:hover { text-decoration: none; }

.brand-lockup {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

/* .top-nav prefix needed to outrank navbar.css, which paints these black */
.top-nav .brand-text-cultural {
  font-family: var(--t-font) !important;
  font-size: 1rem !important;
  font-weight: 650 !important;
  font-style: normal !important;
  letter-spacing: -0.015em;
  color: var(--t-text) !important;
  text-transform: none !important;
}

.top-nav .brand-subtitle-cultural {
  font-family: var(--t-font) !important;
  font-size: 0.7rem !important;
  font-weight: 400 !important;
  font-style: normal !important;
  letter-spacing: 0.04em;
  color: var(--t-dim) !important;
  text-transform: none !important;
}

.nav-logo-link:hover .brand-text-cultural,
.nav-logo-link:hover .brand-subtitle-cultural {
  color: var(--t-text) !important;
}

.nav-links { gap: 0.25rem; }

.nav-link-cultural,
.top-nav a,
.top-nav span {
  font-family: var(--t-font) !important;
  font-size: 0.92rem !important;
  font-weight: 500 !important;
  letter-spacing: 0 !important;
  text-transform: none !important;
  color: var(--t-muted) !important;
  text-decoration: none;
  transition: color 0.2s ease;
}

.top-nav .nav-links a {
  padding: 0.45rem 0.15rem;
  position: relative;
}

.top-nav .nav-links a::after {
  content: "";
  position: absolute;
  left: 0.15rem;
  right: 0.15rem;
  bottom: 0.1rem;
  height: 1.5px;
  background: var(--t-arc);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

.top-nav .nav-links a:hover::after,
.top-nav .nav-links a.is-current::after { transform: scaleX(1); }

.top-nav a:hover,
.nav-link-cultural:hover { color: var(--t-text) !important; }

.top-nav .nav-links a.is-current { color: var(--t-text) !important; }

.top-nav .dropdown-menu {
  background: var(--t-surface);
  border: 1px solid var(--t-line-strong);
  border-radius: var(--t-radius);
}

.top-nav .dropdown-item {
  color: var(--t-muted) !important;
}

.top-nav .dropdown-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--t-text) !important;
}

/* Cart chip */
.nav-cart {
  display: inline-flex !important;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.95rem !important;
  border: 1px solid var(--t-line-strong);
  border-radius: 999px;
  color: var(--t-text) !important;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.nav-cart:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.32);
}

.nav-cart-count {
  display: inline-grid;
  place-items: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--t-blue);
  color: #fff !important;
  font-size: 0.7rem !important;
  font-weight: 700 !important;
  line-height: 1;
}

/* ── Layout primitives ─────────────────────────────────── */

.t-wrap {
  width: min(1180px, 100% - 3rem);
  margin-inline: auto;
}

.t-narrow {
  width: min(760px, 100% - 3rem);
  margin-inline: auto;
}

.t-section {
  padding-block: clamp(4rem, 8vw, 7rem);
  position: relative;
}

.t-section + .t-section { border-top: 1px solid var(--t-line); }

.t-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--t-dim);
  margin: 0 0 1rem;
}

.t-h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.02;
  margin: 0 0 1.25rem;
}

.t-h2 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 1rem;
}

.t-h3 {
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 0.75rem;
}

.t-lead {
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  line-height: 1.65;
  color: var(--t-muted);
  margin: 0;
}

.t-head {
  max-width: 720px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.t-head-center { text-align: center; margin-inline: auto; }

.t-silver {
  background: var(--t-silver);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.t-gradient {
  background: var(--t-arc);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.t-grid { display: grid; gap: 1.25rem; }
.t-grid-2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.t-grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.t-grid-4 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }

/* ── Buttons ───────────────────────────────────────────── */

.t-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-family: var(--t-font);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.t-btn:hover { transform: translateY(-2px); text-decoration: none; }

.t-btn-primary { background: #fff; color: #06070c; }
.t-btn-primary:hover { background: #fff; color: #06070c; box-shadow: 0 12px 34px rgba(255, 255, 255, 0.18); }

.t-btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--t-line-strong);
  color: var(--t-text);
}

.t-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.09);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
}

.t-btn-blue {
  background: linear-gradient(180deg, var(--t-blue), #2f6fe0);
  color: #fff;
  box-shadow: 0 10px 28px rgba(76, 141, 255, 0.3);
}

.t-btn-blue:hover { color: #fff; filter: brightness(1.07); }

.t-btn-lg { padding: 1rem 2rem; font-size: 1rem; }
.t-btn-block { width: 100%; }

.t-actions { display: flex; flex-wrap: wrap; gap: 0.85rem; align-items: center; }

.t-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--t-text);
  text-decoration: none;
}

.t-link span { transition: transform 0.2s ease; }
.t-link:hover { color: #fff; text-decoration: none; }
.t-link:hover span { transform: translateX(4px); }

.t-note { font-size: 0.85rem; color: var(--t-dim); margin: 1rem 0 0; }

/* ── Cards ─────────────────────────────────────────────── */

.t-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
  border: 1px solid var(--t-line);
  border-radius: var(--t-radius-lg);
  padding: clamp(1.5rem, 2.5vw, 2rem);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.t-card:hover { border-color: var(--t-line-strong); transform: translateY(-3px); }

.t-card h3 { font-size: 1.15rem; font-weight: 650; margin: 0 0 0.6rem; }
.t-card p { font-size: 0.95rem; line-height: 1.6; color: var(--t-muted); margin: 0; }

/* ── Forms ─────────────────────────────────────────────── */

label { color: var(--t-muted); font-size: 0.88rem; font-weight: 500; }

input[type="text"], input[type="email"], input[type="password"],
input[type="tel"], input[type="number"], input[type="search"],
select, textarea, .form-control, .form-select {
  width: 100%;
  padding: 0.8rem 1.1rem;
  border-radius: var(--t-radius);
  border: 1px solid var(--t-line-strong);
  background: rgba(255, 255, 255, 0.045) !important;
  color: var(--t-text) !important;
  font-family: var(--t-font);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

input::placeholder, textarea::placeholder { color: var(--t-dim); }

input:focus, select:focus, textarea:focus,
.form-control:focus, .form-select:focus {
  border-color: var(--t-blue) !important;
  background: rgba(255, 255, 255, 0.075) !important;
  box-shadow: 0 0 0 3px rgba(76, 141, 255, 0.16) !important;
  color: var(--t-text) !important;
}

select option { background: var(--t-surface); color: var(--t-text); }

fieldset { border: 0; padding: 0; margin: 0; }

/* ── Flash messages ───────────────────────────────────── */

.alert {
  border-radius: var(--t-radius);
  border: 1px solid var(--t-line-strong);
  background: var(--t-surface);
  color: var(--t-text);
  font-size: 0.92rem;
}

.alert-success { border-color: rgba(47, 216, 192, 0.4); background: rgba(47, 216, 192, 0.08); }
.alert-warning { border-color: rgba(255, 178, 122, 0.4); background: rgba(255, 178, 122, 0.08); }
.alert-danger, .alert-error { border-color: rgba(255, 107, 107, 0.4); background: rgba(255, 107, 107, 0.08); }
.alert-info { border-color: rgba(76, 141, 255, 0.4); background: rgba(76, 141, 255, 0.08); }

.alert .btn-close { filter: invert(1) grayscale(1) brightness(2); opacity: 0.6; }

/* ── Tables ────────────────────────────────────────────── */

.table, .table > :not(caption) > * > * {
  color: var(--t-text) !important;
  background: transparent !important;
  border-color: var(--t-line) !important;
}

.table thead th {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--t-dim) !important;
  border-bottom: 1px solid var(--t-line-strong) !important;
}

.table tbody tr:hover > * { background: rgba(255, 255, 255, 0.035) !important; }

/* ── Legal / long-form copy ────────────────────────────── */

/* The translated copy ships wrapped in .legal-box, and live.css paints both
   that and .legal-content for a white page — override the lot. */
.legal-content {
  width: min(820px, 100% - 3rem);
  margin: 0 auto;
  padding-block: clamp(3rem, 7vw, 5.5rem);
  background: transparent !important;
  color: var(--t-muted);
  font-size: 1rem;
  line-height: 1.75;
}

.legal-content .legal-box {
  max-width: none;
  padding: 0;
  color: var(--t-muted);
  line-height: 1.75;
}

.legal-content .legal-box h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 1.5rem;
  color: var(--t-text);
}

.legal-content .legal-box h2,
.legal-content .legal-box h3 {
  font-size: 1.15rem;
  font-weight: 650;
  margin: 2.75rem 0 0.85rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--t-line);
  color: var(--t-text);
}

.legal-content .legal-box p i {
  display: block;
  color: var(--t-dim);
  font-style: normal;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 2.5rem;
}

.legal-content h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 1.5rem;
  color: var(--t-text);
}

.legal-content h2 {
  font-size: 1.35rem;
  font-weight: 650;
  margin: 2.75rem 0 0.85rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--t-line);
  color: var(--t-text);
}

.legal-content h3 {
  font-size: 1.08rem;
  font-weight: 650;
  margin: 1.85rem 0 0.6rem;
  color: var(--t-text);
}

.legal-content p, .legal-content li { margin-bottom: 1rem; }
.legal-content ul, .legal-content ol { padding-left: 1.35rem; }
.legal-content strong, .legal-content b { color: var(--t-text); font-weight: 600; }
.legal-content a { color: var(--t-blue); text-decoration: underline; text-underline-offset: 3px; }
.legal-content hr { border-color: var(--t-line); margin: 2.5rem 0; }

.legal-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}

.legal-content th, .legal-content td {
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--t-line);
  text-align: left;
}

.legal-content th { color: var(--t-text); background: rgba(255, 255, 255, 0.03); }

/* ── Footer ────────────────────────────────────────────── */

.site-footer {
  background: var(--t-black);
  border-top: 1px solid var(--t-line);
  padding-block: clamp(2.5rem, 5vw, 3.5rem);
  margin-top: 0;
}

.footer-content {
  width: min(1180px, 100% - 3rem);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.footer-content p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--t-dim);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  margin: 0;
  padding: 0;
  justify-content: flex-end;
}

/* li needed to outrank live.css, which sets these near-black and uppercase */
.footer-links li a {
  font-size: 0.82rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--t-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links li a:hover { color: var(--t-text); }

/* ── Cookie banner ─────────────────────────────────────── */

#cookie-consent {
  background: rgba(10, 12, 18, 0.96) !important;
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--t-line-strong);
  color: var(--t-muted) !important;
  font-size: 0.85rem;
  padding: 1rem 1.5rem !important;
}

#cookie-consent .btn {
  border-radius: 999px;
  border: 1px solid var(--t-line-strong);
  color: var(--t-text);
  font-size: 0.82rem;
  padding: 0.35rem 1.1rem;
}

#cookie-consent .btn:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }

/* ── Scroll reveal ─────────────────────────────────────── */

.t-reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.t-reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .t-reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ── Responsive ────────────────────────────────────────── */

@media (max-width: 900px) {
  .top-nav .container-fluid { flex-wrap: wrap; row-gap: 0.5rem; padding-block: 0.7rem; }
  .navbar-center { order: 3; width: 100%; }
  .nav-links { justify-content: flex-start !important; overflow-x: auto; padding-bottom: 0.25rem; }
  .brand-subtitle-cultural { display: none !important; }
}

@media (max-width: 560px) {
  .t-wrap, .t-narrow { width: calc(100% - 2.5rem); }
  .footer-content { flex-direction: column; align-items: flex-start; }
  .footer-links { justify-content: flex-start; }
}