*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

:root {
  --bg:        #f4f2ef;
  --surface:   #ffffff;
  --border:    #e2ddd8;
  --text:      #1a1916;
  --text-dim:  #6b6560;
  --text-muted:#a8a09a;
  --accent:    #c49010;
  --warn:      #c07018;
  --danger:    #c03010;
  --font: 'Inter', -apple-system, 'Helvetica Neue', Arial, sans-serif;
}

html, body {
  width: 100%; height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: 300;
  line-height: 1.5;
  overflow: hidden;
}

/* ——— Entry Screen ——— */
#entry-screen {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadein 1s ease;
}

.entry-content {
  max-width: 400px;
  width: 100%;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

.brand-mark {
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: 0.04em;
}

.tagline {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.65;
}

.entry-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

button {
  background: var(--text);
  border: 1px solid var(--text);
  color: #fff;
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.07em;
  padding: 0.85rem 1.6rem;
  cursor: pointer;
  text-align: center;
  transition: background 0.2s, border-color 0.2s;
  border-radius: 0;
}

button:hover { background: #333; border-color: #333; }
button:disabled { opacity: 0.5; cursor: default; }

button.secondary-btn {
  background: transparent;
  border-color: var(--border);
  color: var(--text-dim);
}
button.secondary-btn:hover {
  background: transparent;
  border-color: var(--text-dim);
  color: var(--text);
}

.fine-print {
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ——— Main Screen ——— */
#main-screen {
  height: 100vh;
  display: flex;
  flex-direction: column;
  animation: fadein 0.5s ease;
}

/* Header */
#site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: 50px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.header-brand {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.header-indicator {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.indicator-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background 0.5s;
}
.indicator-dot.connected { background: #5a9060; }

/* Layout */
#layout {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 320px;
  overflow: hidden;
  min-height: 0;
}

/* ——— Viewer / Canvas ——— */
#viewer-section {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #eae6e0;
  overflow: hidden;
}

#canvas-container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

#canvas-container canvas {
  max-width:  min(90vw, 88vh);
  max-height: min(90vw, 88vh);
  display: block;
}

/* Webcam preview (debug) */
#webcam {
  position: absolute;
  bottom: 12px;
  right: 12px;
  width: 72px;
  height: 54px;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: 2px;
  opacity: 0.55;
  transform: scaleX(-1);
}

/* ——— Status Panel ——— */
#status-panel {
  border-left: 1px solid var(--border);
  background: var(--surface);
  padding: 0 1.4rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.panel-group {
  padding: 1.3rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.panel-label {
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.panel-value {
  font-size: 1.2rem;
  font-weight: 300;
  color: var(--text);
  transition: color 0.8s;
  letter-spacing: 0.01em;
}
.panel-value.warning { color: var(--warn); }
.panel-value.danger  { color: var(--danger); }

.panel-divider {
  height: 1px;
  background: var(--border);
  flex-shrink: 0;
}

/* Metrics */
.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.metric-name  { font-size: 0.8rem; color: var(--text-dim); }
.metric-value { font-size: 0.95rem; font-weight: 400; }

/* Heat bar */
.heat-track {
  height: 2px;
  background: var(--border);
  overflow: hidden;
  margin-top: 0.25rem;
}
.heat-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.8s ease, background 0.8s ease;
}
.heat-fill.warm    { background: var(--warn); }
.heat-fill.burning { background: var(--danger); }

.heat-readout {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.45rem;
}
.heat-unit { color: var(--text-muted); }

/* Recommendation */
.recommendation-text {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.65;
}

/* Product copy */
.product-description {
  padding: 1.3rem 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-top: auto;
}
.product-description p {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ——— Ending Overlay ——— */
#ending-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 3rem 2.5rem;
  background: rgba(0,0,0,0);
  transition: background 1.2s ease;
  pointer-events: none;
}
#ending-overlay.visible  { background: rgba(0,0,0,0.72); }
#ending-overlay.black    { background: #000; transition: background 0.4s ease; }

.ending-dialogue {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  max-width: 520px;
}

.ending-line {
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 300;
  color: rgba(255,255,255,0.92);
  line-height: 1.7;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.ending-line.show { opacity: 1; transform: translateY(0); }

.ending-speaker {
  color: rgba(255,255,255,0.38);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  margin-right: 0.55em;
}

/* ——— Animations ——— */
@keyframes fadein {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ——— Responsive ——— */
@media (max-width: 680px) {
  html, body { overflow: auto; }

  #layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    overflow: visible;
  }

  #viewer-section {
    min-height: 52vw;
  }

  #status-panel {
    border-left: none;
    border-top: 1px solid var(--border);
    overflow-y: visible;
  }

  #main-screen { height: auto; min-height: 100vh; }
}