/* TITAN CASE - industrial premium design system */

@import url('https://fonts.googleapis.com/css2?family=Inter+Tight:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root,
html[data-theme="light"] {
  color-scheme: light;
  --ink-0: #08080a;
  --ink-1: #0e0e10;
  --ink-2: #16161a;
  --ink-3: #1d1d22;
  --ink-4: #26262d;
  --graphite-1: #2c2c33;
  --graphite-2: #3a3a42;
  --graphite-3: #50505a;
  --graphite-4: #6c6c77;
  --gray-1: #8a8a93;
  --gray-2: #a8a8af;
  --gray-3: #c5c5cb;
  --gray-4: #dcdce0;
  --gray-5: #e8e8eb;
  --paper-3: #efeeea;
  --paper-2: #f4f2ee;
  --paper-1: #f8f7f4;
  --paper-0: #fbfaf8;
  --white: #ffffff;

  --rule: rgba(14, 14, 16, 0.10);
  --rule-strong: rgba(14, 14, 16, 0.22);
  --rule-on-dark: rgba(255, 255, 255, 0.14);
  --rule-on-dark-strong: rgba(255, 255, 255, 0.30);

  --font-display: 'Inter Tight', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-body: 'Inter Tight', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --pad-x: clamp(20px, 4vw, 56px);
  --max-w: 1440px;
  --r-sm: 8px;
  --r-md: 8px;
  --r-lg: 8px;
  --r-xl: 12px;

  --bg: var(--paper-2);
  --surface: var(--white);
  --surface-2: var(--paper-3);
  --surface-raised: var(--paper-0);
  --text: var(--ink-1);
  --text-muted: var(--graphite-3);
  --text-soft: var(--gray-1);
  --border: var(--rule);
  --border-strong: var(--rule-strong);
  --input-bg: var(--white);
  --input-text: var(--ink-1);
  --input-border: var(--rule-strong);
  --button-bg: var(--ink-1);
  --button-text: var(--paper-1);
  --overlay: rgba(14, 14, 16, 0.58);
  --shadow: 0 24px 60px rgba(14, 14, 16, 0.08);
  --success: #198754;
  --warning: #b46a00;
  --danger: #c83d3d;
  --info: #4d63d9;
  --accent: #ff7a1a;
  --accent-ink: #0e0e10;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --ink-0: #fbfaf8;
  --ink-1: #f4f2ee;
  --ink-2: #e8e6e1;
  --ink-3: #d6d3cc;
  --ink-4: #b9b6ae;
  --graphite-1: #b9b6ae;
  --graphite-2: #9b9890;
  --graphite-3: #807d76;
  --graphite-4: #66635c;
  --gray-1: #66635c;
  --gray-2: #807d76;
  --gray-3: #9b9890;
  --gray-4: #b9b6ae;
  --gray-5: #d6d3cc;
  --paper-3: #18181b;
  --paper-2: #0e0e10;
  --paper-1: #08080a;
  --paper-0: #050507;
  --white: #14141a;
  --rule: rgba(255, 255, 255, 0.08);
  --rule-strong: rgba(255, 255, 255, 0.18);
  --border: var(--rule);
  --border-strong: var(--rule-strong);
  --input-bg: rgba(255, 255, 255, 0.04);
  --input-text: var(--ink-1);
  --input-border: var(--rule-strong);
  --button-bg: var(--ink-1);
  --button-text: var(--paper-1);
  --overlay: rgba(0, 0, 0, 0.68);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
  --success: #55c878;
  --warning: #f2b84b;
  --danger: #ff6b6b;
  --info: #95a2ff;
}

* { box-sizing: border-box; }

html,
body {
  margin: 0;
  padding: 0;
  background: var(--paper-2);
  color: var(--ink-1);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  min-width: 320px;
  overflow-x: hidden;
}

button,
input,
textarea,
select { font-family: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
main { flex: 1; min-width: 0; }

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.section {
  padding: clamp(44px, 7vw, 96px) 0;
  position: relative;
}

.section-tight,
.section-sm {
  padding: clamp(28px, 4.6vw, 64px) 0;
  position: relative;
}

.ticker + .section {
  padding-top: clamp(36px, 5.5vw, 72px);
}

.band {
  background: var(--paper-1);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.grid { display: grid; gap: 20px; }
.cols-2 { grid-template-columns: 1fr; }
.cols-3 { grid-template-columns: 1fr; }
.cols-4 { grid-template-columns: 1fr 1fr; }
.split,
.hero-grid,
.product-grid,
.config-grid,
.cart-grid,
.checkout-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 64px);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.row-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-width: 0;
}

.wrap { flex-wrap: wrap; }

@media (min-width: 720px) {
  .cols-2 { grid-template-columns: 1fr 1fr; }
  .cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 960px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; align-items: center; }
  .product-grid { grid-template-columns: 1fr 1fr; align-items: start; }
  .config-grid { grid-template-columns: 0.95fr 1.05fr; align-items: start; }
  .cart-grid { grid-template-columns: 1.5fr 0.9fr; align-items: start; }
  .checkout-grid { grid-template-columns: 1.35fr 0.9fr; align-items: start; }
  .contact-grid { grid-template-columns: 0.85fr 1.15fr; align-items: start; }
  .split { grid-template-columns: 1fr 1fr; align-items: center; }
}

.h-display {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(40px, 7.4vw, 116px);
  line-height: 0.92;
  letter-spacing: 0;
}

.h-1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(34px, 5vw, 68px);
  line-height: 0.96;
  letter-spacing: 0;
}

.h-2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 44px);
  line-height: 1.02;
  letter-spacing: 0;
}

.h-3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.15;
  letter-spacing: 0;
}

.eyebrow,
.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--graphite-3);
}

.mono-sm {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--graphite-3);
}

.lead {
  margin: 0;
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.5;
  color: var(--graphite-3);
  text-wrap: pretty;
}

.body-muted {
  color: var(--graphite-3);
}

h1, h2, h3, h4, p { margin-top: 0; }
p { margin-bottom: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 100px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, opacity .18s ease;
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }
.btn:disabled,
.btn.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}
.btn-primary {
  background: var(--ink-1);
  color: var(--paper-1);
  border-color: var(--ink-1);
}
.btn-primary:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-secondary,
.btn-ghost {
  background: transparent;
  color: var(--ink-1);
  border-color: var(--rule-strong);
}
.btn-secondary:hover,
.btn-ghost:hover {
  background: var(--ink-1);
  color: var(--paper-1);
  border-color: var(--ink-1);
}
.btn-accent {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 13px; }
.btn-lg { min-height: 60px; padding: 0 28px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-arrow::after {
  content: "→";
  font-family: var(--font-mono);
  font-size: 13px;
  transform: translateX(0);
  transition: transform .2s ease;
}
.btn-arrow:hover::after { transform: translateX(3px); }

.surface,
.surface-plain {
  background: var(--white);
  border-radius: var(--r-lg);
  border: 1px solid var(--rule);
  color: var(--ink-1);
}
.surface { box-shadow: var(--shadow); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 100px;
  border: 1px solid var(--rule-strong);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--graphite-2);
  background: transparent;
}
.tag-dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.tc-mark {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 1.6px solid currentColor;
  transform: rotate(45deg);
  position: relative;
  color: var(--accent);
}
.tc-mark::before {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid currentColor;
  opacity: 0.55;
}
.tc-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 242, 238, 0.82);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}
.nav-links {
  display: none;
  gap: 28px;
  align-items: center;
}
.nav-links a {
  font-family: var(--font-display);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--graphite-2);
  transition: color .15s ease;
  position: relative;
}
.nav-links a:hover,
.nav-links a.active { color: var(--ink-1); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-icon-btn,
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border-radius: 100px;
  border: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--ink-1);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.nav-icon-btn:hover,
.icon-btn:hover {
  background: var(--ink-1);
  color: var(--paper-1);
  border-color: var(--ink-1);
}
.nav-cart {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px 8px 14px;
  border-radius: 100px;
  border: 1px solid var(--rule-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  background: transparent;
  color: var(--ink-1);
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.nav-cart:hover {
  background: var(--ink-1);
  color: var(--paper-1);
  border-color: var(--ink-1);
}
.nav-cart .count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 100px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 10px;
}
.nav-burger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 100px;
  border: 1px solid var(--rule-strong);
  background: transparent;
  cursor: pointer;
}
.nav-burger span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--ink-1);
  position: relative;
}
.nav-burger span::before,
.nav-burger span::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--ink-1);
}
.nav-burger span::before { top: -5px; }
.nav-burger span::after { top: 5px; }

.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--paper-2);
  z-index: 100;
  padding: 24px var(--pad-x);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transform: translateY(-100%);
  transition: transform .3s ease, visibility 0s linear .3s;
  visibility: hidden;
  overflow-y: auto;
}
.mobile-menu.open {
  transform: translateY(0);
  visibility: visible;
  transition: transform .3s ease, visibility 0s linear 0s;
}
.mobile-menu-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}
.mobile-menu a {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0;
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.mobile-menu a .mono-sm {
  color: var(--gray-1);
}

@media (min-width: 900px) {
  .nav-links { display: flex; }
  .nav-burger { display: none; }
}

.ticker {
  background: var(--ink-1);
  color: var(--paper-3);
  padding: 10px 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  overflow: hidden;
  white-space: nowrap;
}
.ticker-track {
  display: inline-flex;
  gap: 48px;
  animation: ticker var(--ticker-speed, 72s) linear infinite;
  padding-left: 100%;
}
.ticker-track > span {
  display: inline-flex;
  align-items: center;
  gap: 16px;
}
.ticker-track > span::after {
  content: "◆";
  opacity: 0.5;
  color: var(--accent);
}
@keyframes ticker { to { transform: translateX(-100%); } }

.hero-device {
  color: var(--accent);
  opacity: 1;
  transition: opacity .28s ease;
}
.hero-device.fade { opacity: 0; }
.hero-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding-top: 24px;
  margin-top: 20px;
  border-top: 1px solid var(--rule);
}
.stat-value {
  margin-top: 5px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
}
@media (min-width: 640px) {
  .hero-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.product-preview {
  position: relative;
  min-height: var(--pv-stage-h, 360px);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--rule);
  background:
    repeating-linear-gradient(135deg, rgba(14,14,16,0.035) 0 1px, transparent 1px 14px),
    linear-gradient(180deg, var(--paper-1), var(--paper-3));
  display: flex;
  align-items: center;
  justify-content: center;
  isolation: isolate;
}
html[data-theme="dark"] .product-preview {
  background:
    repeating-linear-gradient(135deg, rgba(255,255,255,0.04) 0 1px, transparent 1px 14px),
    linear-gradient(180deg, #14141a, #0a0a0d);
}
.preview-device {
  position: relative;
  width: var(--pv-w);
  height: var(--pv-h);
  z-index: 1;
  animation: previewFloat 6s ease-in-out infinite;
}
.product-preview.static .preview-device { animation: none; }
.preview-shadow {
  position: absolute;
  left: 50%;
  bottom: 9%;
  width: 42%;
  height: 18px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: rgba(0,0,0,0.45);
  filter: blur(13px);
  opacity: 0.34;
}
.preview-cap {
  position: absolute;
  top: 0;
  left: 50%;
  width: calc(var(--pv-w) * 1.04);
  height: var(--pv-cap);
  transform: translateX(-50%);
  border-radius: calc(var(--pv-radius) * 0.95) calc(var(--pv-radius) * 0.95) calc(var(--pv-radius) * 0.45) calc(var(--pv-radius) * 0.45);
  background: var(--cap-bg);
  box-shadow: inset -10px 0 16px rgba(0, 0, 0, 0.28), inset 8px 0 14px rgba(255, 255, 255, 0.12), 0 7px 18px rgba(0, 0, 0, 0.24);
  z-index: 3;
}
.preview-latch {
  position: absolute;
  top: calc(var(--pv-cap) - 8px);
  left: 50%;
  width: calc(var(--pv-w) * 0.2);
  height: calc(var(--pv-w) * 0.2);
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--cap-bg);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: inset -2px -2px 4px rgba(0, 0, 0, 0.3);
  z-index: 4;
}
.preview-ring {
  position: absolute;
  top: calc(var(--pv-cap) + 1px);
  left: 50%;
  width: calc(var(--pv-w) * 0.86);
  height: 5px;
  transform: translateX(-50%);
  border-radius: 3px;
  background: color-mix(in srgb, var(--cap-hex) 76%, var(--ink-1) 24%);
  z-index: 2;
}
.preview-body {
  position: absolute;
  top: calc(var(--pv-cap) + 7px);
  left: 50%;
  width: var(--pv-w);
  height: calc(var(--pv-h) - var(--pv-cap) - 7px);
  transform: translateX(-50%);
  border-radius: calc(var(--pv-radius) * 0.44) calc(var(--pv-radius) * 0.44) var(--pv-radius) var(--pv-radius);
  overflow: hidden;
  background: var(--body-bg);
  box-shadow: inset -13px 0 20px rgba(0, 0, 0, 0.28), inset 10px 0 16px rgba(255, 255, 255, 0.11), 0 14px 28px rgba(0, 0, 0, 0.24);
}
.preview-body::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 15%;
  width: 13%;
  background: linear-gradient(180deg, rgba(255,255,255,0.23), transparent 74%);
  filter: blur(2px);
}
.preview-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-90deg);
  color: var(--engrave);
  font-family: var(--font-mono);
  font-size: var(--pv-fz);
  font-weight: 600;
  letter-spacing: 0.22em;
  white-space: nowrap;
}
.preview-symbols {
  position: absolute;
  left: 0;
  right: 0;
  bottom: var(--pv-gap);
  display: flex;
  justify-content: center;
  gap: 5px;
  color: var(--engrave);
  font-size: calc(var(--pv-fz) * 0.88);
}
.preview-brand {
  position: absolute;
  top: var(--pv-gap);
  left: 0;
  right: 0;
  text-align: center;
  color: var(--engrave);
  opacity: 0.5;
  font-family: var(--font-mono);
  font-size: calc(var(--pv-fz) * 0.58);
  font-weight: 600;
  letter-spacing: 0.08em;
}
@keyframes previewFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.input,
.textarea,
.select {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border-radius: var(--r-md);
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--input-text);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
  transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
}
.textarea {
  padding: 14px 16px;
  height: auto;
  min-height: 112px;
  resize: vertical;
}
.input:focus,
.textarea:focus,
.select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
.input::placeholder,
.textarea::placeholder { color: var(--gray-1); }
.field-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--graphite-3);
  margin-bottom: 8px;
}

.choice {
  width: 100%;
  padding: 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--rule);
  background: var(--white);
  color: var(--ink-1);
  text-align: left;
  cursor: pointer;
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.choice:hover { transform: translateY(-1px); border-color: var(--rule-strong); }
.choice.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent) inset;
}
.choice:disabled,
.choice.unavailable {
  opacity: 0.48;
  cursor: not-allowed;
}

.step-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule);
}
.step-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 100px;
  border: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--graphite-2);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
}
.step-tab.active {
  background: var(--ink-1);
  color: var(--paper-1);
  border-color: var(--ink-1);
}

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
@media (min-width: 620px) {
  .swatch-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.swatch {
  position: relative;
  border-radius: var(--r-md);
  border: 1px solid var(--rule);
  cursor: pointer;
  transition: transform .15s ease, border-color .15s ease, opacity .15s ease;
  aspect-ratio: 1 / 1;
  min-height: 118px;
  overflow: hidden;
  background: var(--paper-3);
}
.swatch:hover { transform: translateY(-2px); }
.swatch.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent) inset, 0 0 0 4px var(--white) inset;
}
.swatch.unavailable { opacity: 0.45; }
.swatch-label {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  display: grid;
  gap: 4px;
  padding: 9px 10px;
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: color-mix(in srgb, var(--white) 88%, transparent);
  color: var(--ink-1);
  text-align: left;
}
.swatch-label span {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}
.price-extra {
  color: var(--accent);
  font-weight: 600;
}

.symbol-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}
@media (min-width: 620px) {
  .symbol-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}
.symbol-btn {
  aspect-ratio: 1;
  border-radius: var(--r-md);
  border: 1px solid var(--rule);
  background: var(--white);
  color: var(--ink-1);
  cursor: pointer;
  font-size: 24px;
}
.symbol-btn.selected {
  background: var(--ink-1);
  color: var(--paper-1);
  border-color: var(--ink-1);
}

.stock-badge {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  padding: 8px 12px;
  border-radius: var(--r-md);
  border: 1px solid color-mix(in srgb, var(--stock-color) 35%, var(--rule));
  background: color-mix(in srgb, var(--stock-color) 10%, transparent);
  width: fit-content;
}
.stock-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
}
.stock-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--stock-color);
}
.stock-sub {
  padding-left: 15px;
  color: var(--graphite-3);
  font-size: 12px;
}
.stock-in_stock { --stock-color: var(--success); }
.stock-low_stock { --stock-color: var(--warning); }
.stock-preorder { --stock-color: var(--info); }
.stock-out_of_stock { --stock-color: var(--danger); }
.stock-restocking { --stock-color: var(--warning); }

.notice {
  border: 1px dashed var(--rule-strong);
  border-radius: var(--r-md);
  padding: 14px 16px;
  color: var(--graphite-3);
  background: color-mix(in srgb, var(--white) 70%, transparent);
}
.notice-danger {
  border-style: solid;
  border-color: color-mix(in srgb, var(--danger) 55%, var(--rule));
  color: var(--danger);
}

.progress {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--paper-3);
  border: 1px solid var(--rule);
}
.progress span {
  display: block;
  height: 100%;
  width: var(--progress);
  background: var(--accent);
}

.spec-row,
.spec {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--rule-strong);
}
.spec-row:last-child,
.spec:last-child { border-bottom: 0; }
.spec-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--graphite-3);
  white-space: nowrap;
}
.spec-fill {
  border-bottom: 1px dotted var(--rule-strong);
  height: 1px;
  transform: translateY(-3px);
}
.spec-val {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-1);
  text-align: right;
}
.spec-success { color: var(--success); }

details summary {
  cursor: pointer;
  list-style: none;
}
details summary::-webkit-details-marker { display: none; }

.sticky-panel {
  position: sticky;
  top: 88px;
}

.footer {
  background: #050507;
  color: #f8f7f4;
  padding: 80px 0 40px;
  margin-top: auto;
}
.legal-copy {
  max-width: 820px;
}
.legal-copy h2 {
  font-size: 1rem;
  margin: 28px 0 8px;
}
.legal-copy p {
  color: var(--graphite-3);
  margin: 0 0 10px;
}
.hp-field {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}
.footer-col h6 {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-2);
  margin: 0 0 18px;
  font-weight: 500;
}
.footer-col a,
.footer-col p,
.footer-col span {
  display: block;
  color: #c5c5cb;
  font-size: 14px;
  padding: 4px 0;
}
.footer-col a:hover { color: #f8f7f4; }
.footer-bottom {
  margin-top: 60px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.14);
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: space-between;
  align-items: flex-start;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--gray-1);
  text-transform: uppercase;
}
@media (min-width: 720px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 56px; }
  .footer-bottom { flex-direction: row; align-items: center; }
}

.fade-in { animation: fade .35s ease both; }
@keyframes fade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

::selection { background: var(--accent); color: var(--accent-ink); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-3); border-radius: 10px; border: 2px solid var(--paper-2); }
::-webkit-scrollbar-thumb:hover { background: var(--gray-1); }

html[data-theme="dark"] .nav {
  background: rgba(14, 14, 16, 0.78);
  border-bottom-color: var(--rule);
}
html[data-theme="dark"] .surface,
html[data-theme="dark"] .surface-plain,
html[data-theme="dark"] .choice,
html[data-theme="dark"] .symbol-btn {
  background: rgba(255,255,255,0.03);
  border-color: var(--rule);
}
html[data-theme="dark"] .ticker { background: #18181b; color: var(--gray-5); }
html[data-theme="dark"] .footer { background: #050507; }
html[data-theme="dark"] .swatch-label {
  background: rgba(8, 8, 10, 0.72);
  color: var(--ink-1);
}
html[data-theme="dark"] .notice {
  background: rgba(255,255,255,0.03);
}
html[data-theme="dark"] .select {
  background: #14141a;
  color: var(--ink-1);
  border-color: var(--rule-strong);
}
html[data-theme="dark"] .select option {
  background: #14141a;
  color: #f4f2ee;
}

@media (max-width: 959px) {
  .sticky-panel {
    position: static !important;
    top: auto !important;
  }
  .config-grid,
  .product-grid,
  .cart-grid,
  .checkout-grid {
    gap: 28px;
  }
}

@media (max-width: 720px) {
  .nav-quick { display: none; }
  .section { padding: 38px 0; }
  .section-tight { padding: 28px 0; }
  .row-between { align-items: flex-start; flex-direction: column; }
  .product-preview { min-height: min(var(--pv-stage-h, 360px), 430px); }
  .swatch { min-height: 104px; }
  .spec-row,
  .spec {
    grid-template-columns: 1fr;
    gap: 5px;
  }
  .spec-fill { display: none; }
  .spec-val { text-align: left; }
  .btn { white-space: normal; text-align: center; }
}