:root {
  color-scheme: dark;
  --bg: #11110f;
  --panel: #1b1b18;
  --line: #36362f;
  --text: #f1f0e8;
  --muted: #aaa69a;
  --body: #b9b6ad;
  --accent: #d8cfb8;
  --dark: #070808;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.page-shell {
  min-height: 100vh;
}

.viewer-section {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto minmax(560px, 1fr);
}

.topbar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px clamp(18px, 4vw, 54px);
  border-bottom: 1px solid var(--line);
  background: rgba(17, 17, 15, 0.88);
  backdrop-filter: blur(12px);
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--accent);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1 {
  margin: 0;
  font-size: clamp(24px, 3vw, 42px);
  line-height: 1.05;
  letter-spacing: 0;
}

.links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.links a,
.hud button {
  min-height: 38px;
  border: 1px solid var(--line);
  background: #24241f;
  color: var(--text);
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
}

.links a:hover,
.hud button:hover,
.hud button.is-active {
  border-color: var(--accent);
  background: #302f29;
}

.viewer-wrap {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 45%),
    #141410;
}

#fielddeck-viewer {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 560px;
  outline: none;
}

.hud {
  position: absolute;
  left: clamp(14px, 3vw, 32px);
  bottom: clamp(14px, 3vw, 32px);
  display: grid;
  gap: 10px;
  max-width: calc(100% - 28px);
}

.button-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.loading {
  position: absolute;
  right: clamp(14px, 3vw, 32px);
  bottom: clamp(14px, 3vw, 32px);
  color: var(--muted);
  background: rgba(10, 10, 9, 0.75);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
}

.loading.is-hidden {
  display: none;
}

.spec-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-block: 1px solid var(--line);
  background: var(--panel);
}

.spec-band div {
  padding: 22px clamp(16px, 3vw, 34px);
  border-right: 1px solid var(--line);
}

.spec-band div:last-child {
  border-right: 0;
}

.spec-band span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 7px;
}

.spec-band strong {
  display: block;
  font-size: clamp(16px, 2vw, 21px);
  line-height: 1.2;
}

.audit-band {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.audit-band > div,
.audit-band > ul {
  margin: 0;
  background: #151511;
  padding: clamp(22px, 4vw, 42px);
}

.audit-band h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 34px);
  letter-spacing: 0;
}

.audit-band p,
.audit-band li {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}

.audit-band p {
  max-width: 840px;
  margin: 0;
}

.audit-band ul {
  list-style-position: inside;
}

.audit-band li + li {
  margin-top: 10px;
}

.render-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

figure {
  margin: 0;
  background: #171713;
}

figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}

figcaption {
  color: var(--muted);
  padding: 12px 14px 16px;
  font-size: 14px;
}

@media (max-width: 820px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .links {
    justify-content: flex-start;
  }

  .viewer-section {
    grid-template-rows: auto minmax(520px, 70vh);
  }

  .spec-band,
  .audit-band,
  .render-grid {
    grid-template-columns: 1fr;
  }

  .spec-band div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}