:root {
  --bg0: #0b1210;
  --bg1: #12201b;
  --bg2: #1a2e26;
  --ink: #e8f2ec;
  --muted: #9bb5a8;
  --accent: #7CFFB2;
  --accent-2: #ffc857;
  --danger: #ff7b72;
  --line: rgba(124, 255, 178, 0.18);
  --radius: 18px;
  --font-display: "Syne", sans-serif;
  --font-body: "Manrope", sans-serif;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(124, 255, 178, 0.16), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(255, 200, 87, 0.12), transparent 50%),
    linear-gradient(160deg, var(--bg0), var(--bg1) 45%, #0e1915);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #04110c;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }

.shell {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(11, 18, 16, 0.72);
  border-bottom: 1px solid var(--line);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.1rem;
  font-size: 0.92rem;
}
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover, .nav a:focus-visible { color: var(--accent); outline: none; }

.site-main { padding-bottom: 4rem; }
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer .shell { display: grid; gap: 0.35rem; }

.hero {
  position: relative;
  min-height: min(88vh, 820px);
  display: grid;
  align-items: end;
  overflow: hidden;
  background:
    linear-gradient(180deg, transparent 20%, rgba(11, 18, 16, 0.92) 78%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Crect width='160' height='160' fill='%230b1210'/%3E%3Cg fill='%237CFFB2' fill-opacity='0.07'%3E%3Ccircle cx='8' cy='8' r='2'/%3E%3Ccircle cx='40' cy='8' r='2'/%3E%3Ccircle cx='72' cy='8' r='2'/%3E%3Ccircle cx='104' cy='8' r='2'/%3E%3Ccircle cx='136' cy='8' r='2'/%3E%3Ccircle cx='8' cy='40' r='2'/%3E%3Ccircle cx='40' cy='40' r='2'/%3E%3Ccircle cx='72' cy='40' r='2'/%3E%3Ccircle cx='104' cy='40' r='2'/%3E%3Ccircle cx='136' cy='40' r='2'/%3E%3C/g%3E%3C/svg%3E");
}

.hero-inner {
  padding: 4.5rem 0 3.5rem;
  max-width: 38rem;
}

/* .hero prefix: must outrank the generic `.hero p` rule below. */
.hero .brand-hero {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 4.8rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  max-width: 18ch;
}

.hero p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.55;
  margin: 0 0 1.5rem;
}

.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.85rem 1.35rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn-primary {
  background: var(--accent);
  color: #04110c;
}
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.section {
  padding: 3.5rem 0 1rem;
}
.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 0.5rem;
}
.section > .shell > p.lead {
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 1.75rem;
}

.flow {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.flow-step {
  border-top: 2px solid var(--accent);
  padding-top: 0.85rem;
}
.flow-step strong { display: block; margin-bottom: 0.35rem; }
.flow-step span { color: var(--muted); font-size: 0.92rem; line-height: 1.45; }

.panel {
  background: linear-gradient(180deg, rgba(26, 46, 38, 0.75), rgba(18, 32, 27, 0.9));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.form-grid {
  display: grid;
  gap: 1rem;
}
.form-grid label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.92rem;
}
.form-grid input,
.form-grid select,
.form-grid textarea {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
  color: var(--ink);
  padding: 0.75rem 0.9rem;
  font: inherit;
}
.form-grid input:focus-visible,
.form-grid select:focus-visible,
.form-grid textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.65rem;
}
.choice {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.9rem;
  cursor: pointer;
  background: rgba(0,0,0,0.18);
}
.choice:has(input:checked) {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.choice input { margin-right: 0.4rem; }

.list {
  display: grid;
  gap: 0.75rem;
}
.list-item {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(0,0,0,0.2);
}
.muted { color: var(--muted); }
.error {
  color: var(--danger);
  background: rgba(255, 123, 114, 0.08);
  border: 1px solid rgba(255, 123, 114, 0.35);
  padding: 0.75rem 1rem;
  border-radius: 12px;
}
.flash {
  background: rgba(124, 255, 178, 0.1);
  border: 1px solid var(--line);
  padding: 0.75rem 1rem;
  border-radius: 12px;
  margin-bottom: 1rem;
}
.loading {
  display: none;
  align-items: center;
  gap: 0.6rem;
  color: var(--muted);
  margin: 0.75rem 0;
}
.loading.is-on { display: inline-flex; }
.spinner {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.viewer-shell {
  display: grid;
  gap: 1rem;
}
.viewer-frame {
  min-height: 420px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
  background: #050807;
}
model-viewer {
  width: 100%;
  height: min(70vh, 560px);
  background: #050807;
}
.viewer-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.viewer-controls .btn {
  padding: 0.55rem 0.9rem;
  font-size: 0.85rem;
}
.fallback-3d {
  min-height: 320px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 2rem;
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent-2);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
}
.led-viewer-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.product-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.product-switch .btn.is-active,
.viewer-controls .btn.is-active {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(124, 255, 178, 0.35);
}
.led-viewer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(240px, 0.85fr);
  gap: 1.25rem;
  align-items: start;
}
.led-viewer-stage {
  position: relative;
  padding: 0.75rem;
  display: grid;
  gap: 0.75rem;
}
.led-viewer-canvas {
  position: relative;
  width: 100%;
  height: min(68vh, 560px);
  min-height: 360px;
  border-radius: 14px;
  overflow: hidden;
  background: #050807;
  border: 1px solid var(--line);
}
.led-viewer-canvas canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
  touch-action: none;
}
.led-viewer-stage .loading {
  position: absolute;
  z-index: 2;
  left: 1.25rem;
  top: 1.25rem;
}
.led-viewer-error {
  color: var(--danger);
  margin: 0;
}
.led-viewer-aside {
  display: grid;
  gap: 1rem;
}
.led-specs h2,
.led-info h2 {
  margin-top: 0;
  font-size: 1.15rem;
}
.spec-list {
  display: grid;
  gap: 0.65rem;
  margin: 0;
}
.spec-list > div {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.5rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.45rem;
}
.spec-list dt {
  margin: 0;
  color: var(--muted);
  font-weight: 600;
}
.spec-list dd {
  margin: 0;
}
.tiny { font-size: 0.8rem; }

@media (max-width: 900px) {
  .led-viewer-layout { grid-template-columns: 1fr; }
  .led-viewer-canvas { height: min(52vh, 440px); min-height: 280px; }
}

.tech-details {
  margin-top: 1rem;
}
.tech-details summary {
  cursor: pointer;
  font-weight: 700;
}
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-top: 0.85rem;
}
.tech-grid div {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem;
}
.tech-grid span { display: block; color: var(--muted); font-size: 0.8rem; }

@media (max-width: 900px) {
  .flow { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .flow { grid-template-columns: 1fr; }
  .header-row { align-items: flex-start; flex-direction: column; }
  .hero-inner { padding-top: 3rem; }
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin: 1.25rem 0;
}
.grid-cards .panel {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem;
}
.grid-cards strong { font-size: 1.5rem; font-family: var(--font-display); }
.grid-cards span { color: var(--muted); font-size: 0.85rem; }

.ops-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 1rem;
}

.ops-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  font-size: 0.92rem;
}
.ops-table th, .ops-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.65rem 0.5rem;
  text-align: left;
}
.ops-table th { color: var(--muted); font-weight: 600; }

/* Account, catalog and placeholder pages */
.shell.narrow { width: min(560px, calc(100% - 2rem)); }
.section h2 + .lead { color: var(--muted); margin: 0 0 1.5rem; }
.hint { margin: -0.4rem 0 0; font-size: 0.85rem; }
.small { font-size: 0.82rem; }
.validation-summary ul { margin: 0; padding-left: 1.1rem; color: var(--danger); }
.validation-summary.validation-summary-valid { display: none; }
.form-grid .field-validation-error,
.text-danger { color: var(--danger); font-size: 0.85rem; }
.search-row {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}
.search-row input {
  flex: 1;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
  color: var(--ink);
  padding: 0.75rem 1.1rem;
  font: inherit;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}
.product-card {
  display: grid;
  gap: 0.5rem;
  align-content: start;
  color: var(--ink);
  transition: border-color 160ms ease, transform 160ms ease;
}
.list-item:hover { text-decoration: none; }
.product-card:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.spec-chips { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.chip {
  font-size: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  color: var(--muted);
}
.endpoint-list { margin: 0; padding-left: 1.1rem; display: grid; gap: 0.4rem; }
code {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.1rem 0.35rem;
  font-size: 0.85em;
}