:root {
  color-scheme: dark;
  --bg-1: #06111f;
  --bg-2: #0a1d34;
  --bg-3: #0e3153;
  --panel: rgba(8, 18, 33, 0.8);
  --panel-border: rgba(152, 213, 255, 0.14);
  --text: #edf7ff;
  --muted: #8ea8be;
  --cyan: #53d6ff;
  --teal: #72ffd1;
  --gold: #ffcc74;
  --shadow: 0 30px 70px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 20%, rgba(83, 214, 255, 0.15), transparent 24%),
    radial-gradient(circle at 80% 15%, rgba(255, 204, 116, 0.1), transparent 18%),
    radial-gradient(circle at 50% 100%, rgba(114, 255, 209, 0.08), transparent 30%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2) 52%, var(--bg-3));
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 30px 30px;
  opacity: 0.45;
}

.page-shell {
  width: min(1360px, calc(100vw - 36px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 28px 0 34px;
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 22px;
}

.intro-panel,
.viewer-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--panel-border);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.intro-panel {
  padding: 28px 24px;
}

.intro-panel::after,
.viewer-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(130deg, rgba(83, 214, 255, 0.07), transparent 24%),
    linear-gradient(320deg, rgba(255, 204, 116, 0.08), transparent 30%);
}

.eyebrow,
.viewer-tag {
  margin: 0 0 12px;
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.76rem;
  color: var(--cyan);
}

h1,
h2,
strong {
  font-family: "Space Grotesk", sans-serif;
}

h1 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 4.6rem);
  line-height: 0.94;
}

.lead {
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.72;
  font-size: 1rem;
}

.facts {
  margin-top: 28px;
  display: grid;
  gap: 14px;
}

.fact-card,
.control-box {
  padding: 18px;
  border-radius: 20px;
  background: rgba(10, 26, 45, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.fact-label {
  display: block;
  margin-bottom: 8px;
  color: var(--teal);
  font-size: 0.84rem;
}

.fact-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.18rem;
}

.fact-card p,
.control-box p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.control-box {
  margin-top: 16px;
}

.control-box h2 {
  margin: 0 0 12px;
  font-size: 1.05rem;
}

.control-box p + p {
  margin-top: 10px;
}

kbd {
  display: inline-block;
  min-width: 4.2em;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
}

.viewer-panel {
  padding: 18px;
  display: flex;
  flex-direction: column;
}

.viewer-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.viewer-header h2 {
  margin: 0;
  font-size: 1.8rem;
}

.status-chip {
  align-self: center;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  background: rgba(83, 214, 255, 0.12);
  border: 1px solid rgba(83, 214, 255, 0.22);
  color: var(--cyan);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.9rem;
  white-space: nowrap;
}

.viewer-frame {
  position: relative;
  flex: 1;
  min-height: 680px;
  overflow: hidden;
  border-radius: 24px;
  background:
    radial-gradient(circle at top, rgba(83, 214, 255, 0.12), transparent 28%),
    linear-gradient(180deg, rgba(8, 18, 33, 0.74), rgba(4, 10, 18, 0.92));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

#villaCanvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 680px;
}

.viewer-hud {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.85rem;
  color: var(--muted);
}

@media (max-width: 1040px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .viewer-frame,
  #villaCanvas {
    min-height: 560px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100vw - 18px, 100%);
    padding-top: 12px;
    padding-bottom: 18px;
  }

  .intro-panel,
  .viewer-panel {
    border-radius: 22px;
  }

  .viewer-header {
    flex-direction: column;
  }

  .viewer-frame,
  #villaCanvas {
    min-height: 420px;
  }

  .viewer-hud {
    flex-direction: column;
    align-items: flex-start;
  }
}