/* layout.css - 플레이그라운드 화면 배치 */
.pc-note {
  display: none;
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 8px 14px;
  background: var(--warn);
  color: #1c1200;
  font-weight: 800;
  text-align: center;
}

.app-shell {
  width: min(1520px, calc(100% - 36px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.app-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-6);
  margin-bottom: var(--sp-6);
}

.back-link {
  display: inline-flex;
  color: var(--muted);
  font-weight: 800;
  margin-bottom: 10px;
}

.app-header h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: 0;
}

.app-header p {
  margin-top: 8px;
  color: var(--muted);
  max-width: 720px;
  word-break: keep-all;
}

.header-links,
.button-row,
.editor-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.stage-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--sp-5);
  align-items: start;
  margin-bottom: var(--sp-6);
}

.stage {
  position: relative;
  width: 100%;
  min-width: 0;
  aspect-ratio: 16 / 9;
  min-height: 360px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: #050912;
  box-shadow: var(--shadow-card);
}

#cam,
#overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

#cam.mirror,
#overlay.mirror {
  transform: scaleX(-1);
}

.stage-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 8px;
  text-align: center;
  color: var(--muted);
  background: radial-gradient(circle at center, rgba(59, 167, 255, 0.08), rgba(5, 9, 18, 0.92));
  pointer-events: none;
}

.stage-empty.hidden {
  display: none;
}

.status-panel {
  display: grid;
  align-content: start;
  gap: var(--sp-4);
}

.metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2);
  align-items: center;
}

.metric {
  display: grid;
  gap: 2px;
  border: 1px solid var(--border-soft);
  border-radius: var(--r-md);
  padding: 10px 12px;
  background: rgba(8, 17, 29, 0.5);
}

.metric span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.metric strong {
  font-family: var(--font-mono);
  font-size: 24px;
}

.mini-log {
  height: 110px;
}

.editor-row {
  display: grid;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.editor-top,
.preset-bar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-4);
}

.editor-top p {
  color: var(--muted);
  margin-top: 4px;
}

.preset-bar {
  justify-content: flex-start;
}

.preset-bar .field {
  width: min(420px, 100%);
}

.conn-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.conn-log-card {
  display: grid;
  gap: var(--sp-3);
}

#mixed-content-card {
  grid-column: 1 / -1;
}

.firmware-row {
  display: grid;
  gap: var(--sp-4);
}

@media (max-width: 1100px) {
  .stage-row,
  .conn-row {
    grid-template-columns: 1fr;
  }

  .editor-top {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 900px) {
  .pc-note {
    display: block;
  }

  .app-shell {
    width: min(100% - 24px, 760px);
    padding-top: 18px;
  }

  .app-header,
  .preset-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .stage {
    min-height: 260px;
  }
}