@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #050505;
  --bg-secondary: #0a0a0a;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(0, 200, 255, 0.3);
  
  --accent: #00c8ff;
  --accent-glow: rgba(0, 200, 255, 0.4);
  --accent2: #0070f3;
  
  --red: #ff4757;
  --red-glow: rgba(255, 71, 87, 0.4);
  --green: #2ed573;
  --green-glow: rgba(46, 213, 115, 0.4);
  --yellow: #ffa502;
  --yellow-glow: rgba(255, 165, 2, 0.4);
  
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.8);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Dynamic Background ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: 
    radial-gradient(circle at 15% 50%, rgba(0, 112, 243, 0.08), transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(0, 200, 255, 0.06), transparent 40%);
  pointer-events: none;
  z-index: 0;
}

.app-container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 16px 24px;
  gap: 16px;
}

/* ── Header ── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  backdrop-filter: blur(8px);
}

.status-pill .indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green-glow);
  animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.1); }
}

.clock {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

/* ── Grid Layout ── */
.camera-grid {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 16px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Camera Card ── */
.cam-card {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
}

.cam-card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--border-focus);
  transform: translateY(-2px);
}

.cam-card.focused {
  grid-column: 1 / -1;
  grid-row: 1 / -1;
  z-index: 10;
}

.cam-card.empty {
  background: transparent;
  border: 1px dashed var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 14px;
  box-shadow: none;
}

.cam-card.empty:hover {
  transform: none;
  border-color: var(--border);
}

.video-container {
  flex: 1;
  min-height: 0;
  position: relative;
  background: #000;
  aspect-ratio: 16 / 9;
}

video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

video.active {
  opacity: 1;
  z-index: 2;
}

video.standby {
  opacity: 0;
  z-index: 1;
}

/* Overlays */
.overlay-tl, .overlay-tr, .overlay-bl {
  position: absolute;
  pointer-events: none;
  z-index: 5;
}

.overlay-tl {
  top: 12px;
  left: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.overlay-tr {
  top: 12px;
  right: 12px;
  font-size: 12px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
  font-variant-numeric: tabular-nums;
}

.overlay-bl {
  bottom: 12px;
  left: 12px;
}

.cam-badge {
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stream-meta {
  font-size: 11px;
  color: #e4e4e7;
  font-family: monospace;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: none;
}

/* Connection States */
.cam-state-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: rgba(5, 5, 5, 0.75);
  backdrop-filter: blur(4px);
  z-index: 10;
  opacity: 1;
  transition: opacity 0.4s ease;
}

.cam-state-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loader {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.state-msg {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.status-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 0 0 10px var(--yellow-glow);
  transition: all 0.3s;
}

.status-indicator.live {
  background: var(--green);
  box-shadow: 0 0 10px var(--green-glow);
  animation: pulse 2s infinite;
}

.status-indicator.error {
  background: var(--red);
  box-shadow: 0 0 10px var(--red-glow);
}

/* ── Footer Controls ── */
.cam-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.cam-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cam-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.cam-id {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: monospace;
}

.cam-controls {
  display: flex;
  gap: 8px;
}

.btn-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.btn-icon:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-icon.active {
  background: rgba(0, 200, 255, 0.15);
  border-color: rgba(0, 200, 255, 0.4);
  color: var(--accent);
}

/* ── Debug Box ── */
.debug-panel {
  font-family: monospace;
  font-size: 11px;
  background: rgba(0, 0, 0, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  height: 80px;
  overflow-y: auto;
  color: var(--accent);
  flex-shrink: 0;
  line-height: 1.6;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .camera-grid { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(4, 1fr); }
}
@media (max-width: 640px) {
  .camera-grid { grid-template-columns: 1fr; grid-template-rows: auto; }
  .clock { display: none; }
  .app-container { padding: 12px; }
}