/* ============================================================
   Layout — Header, Viewport, Sidebar, Camera Bar
   ============================================================ */

/* App shell */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ---- Header ---- */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  padding: 0 24px;
  background: rgba(6, 6, 14, 0.97);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  border-bottom: 1px solid rgba(0, 229, 204, 0.18);
  box-shadow: 0 1px 0 rgba(0, 229, 204, 0.06), 0 4px 24px rgba(0,0,0,0.6);
  flex-shrink: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-logo {
  height: 30px;
  width: auto;
  opacity: 0.95;
}

.header-divider {
  width: 1px;
  height: 20px;
  background: var(--border-medium);
}

.header-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.3px;
  color: var(--text-primary);
}

.header-subtitle {
  font-size: 10px;
  font-weight: 400;
  color: var(--text-muted);
  opacity: 0.45;
  margin-left: 8px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-partner-logo {
  height: 20px;
  width: auto;
  opacity: 0.7;
}

/* ---- Main content area ---- */
.main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ---- Viewport ---- */
.viewport {
  flex: 1;
  position: relative;
  background: radial-gradient(ellipse at 50% 40%, rgba(0, 229, 204, 0.04) 0%, rgba(0, 20, 40, 0.8) 40%, #000 100%);
  overflow: hidden;
  min-width: 0;
}

.viewport video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  z-index: 2;
  background: #000;
}

.viewport audio {
  display: none;
}

.viewport-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 1;
  color: var(--text-muted);
}
.viewport-placeholder.hidden {
  display: none !important;
}

.viewport-placeholder .placeholder-icon {
  width: 72px;
  height: 72px;
  border: 2px solid rgba(0, 229, 204, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--text-disabled);
  box-shadow: 0 0 30px rgba(0, 229, 204, 0.06), inset 0 0 20px rgba(0, 229, 204, 0.04);
}

.viewport-placeholder .placeholder-text {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
}

.viewport-placeholder .placeholder-hint {
  font-size: 11px;
  color: var(--text-disabled);
}

/* Viewport overlay controls */
.viewport-overlay {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 10;
  display: flex;
  gap: 8px;
}

/* ---- Sidebar ---- */
.sidebar {
  width: 340px;
  min-width: 340px;
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border-left: 1px solid rgba(0, 229, 204, 0.14);
  box-shadow: -1px 0 0 rgba(0,229,204,0.08), -8px 0 24px rgba(0,0,0,0.5) inset;
  overflow: hidden;
  transition: width var(--duration-normal) var(--ease-out),
              min-width var(--duration-normal) var(--ease-out),
              opacity var(--duration-normal) var(--ease-out);
}

.sidebar.collapsed {
  width: 0;
  min-width: 0;
  opacity: 0;
  border-left: none;
}

/* Sidebar tabs */
.sidebar-tabs {
  display: flex;
  padding: 0 16px;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  flex-shrink: 0;
}

.sidebar-tab {
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border: none;
  background: none;
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
  white-space: nowrap;
}

.sidebar-tab:hover {
  color: var(--text-secondary);
  background: rgba(255,255,255,0.03);
}

.sidebar-tab.active {
  color: var(--accent-cyan);
  font-weight: 600;
  background: rgba(0,229,204,0.05);
}

/* Animated underline */
.tab-indicator {
  position: absolute;
  bottom: 0;
  height: 3px;
  background: var(--accent-cyan);
  border-radius: 3px 3px 0 0;
  transition: left var(--duration-normal) var(--ease-out),
              width var(--duration-normal) var(--ease-out);
}

/* Sidebar content */
.sidebar-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn var(--duration-normal) var(--ease-out);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- Camera Bar ---- */
.camera-bar {
  display: flex;
  align-items: center;
  padding: 8px 20px;
  gap: 6px;
  background: var(--bg-surface);
  border-top: 1px solid rgba(0, 229, 204, 0.12);
  flex-shrink: 0;
  overflow-x: auto;
}

.camera-bar-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  margin-right: 6px;
  white-space: nowrap;
}

/* Host input in camera bar */
.host-input-group {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  flex-shrink: 0;
  border-left: 1px solid var(--border-medium);
  padding-left: 16px;
}

.host-input-group label {
  font-size: 11px;
  color: var(--text-muted);
}

.host-input {
  width: 140px;
  padding: 4px 8px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.host-input:focus {
  border-color: var(--accent-cyan);
}