:root {
  --bg-dark: #0f172a;
  --card-bg: rgba(30, 41, 59, 0.7);
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border: rgba(255, 255, 255, 0.1);
  --success: #10b981;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
}

.background-glob {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, rgba(15, 23, 42, 0) 70%);
  z-index: -1;
  pointer-events: none;
}

.app-container {
  width: 100%;
  max-width: 1100px;
  height: 90vh;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: var(--primary);
}

.status-badge {
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border);
}

.status-badge.disconnected {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

.status-badge.connected {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.main-content {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.glass-card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

#roomScreen {
  width: 100%;
  max-width: 440px;
  padding: 2.5rem;
  text-align: center;
}

#roomScreen h2 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.input-group {
  text-align: left;
  margin-bottom: 1.5rem;
}

.input-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.input-wrapper {
  display: flex;
  gap: 0.5rem;
}

.input-wrapper input {
  flex: 1;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.8rem 1rem;
  border-radius: 0.75rem;
  font-size: 1rem;
  outline: none;
}

.input-wrapper input:focus {
  border-color: var(--primary);
}

.btn-primary {
  width: 100%;
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.9rem;
  border-radius: 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.8rem 1rem;
  border-radius: 0.75rem;
  cursor: pointer;
}

/* Screen Video Call */
.call-grid {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  position: relative;
  gap: 1rem;
}

.video-container {
  position: relative;
  width: 100%;
  height: 100%;
  background: #000;
  border-radius: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--border);
}

.video-element {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.remote-container {
  grid-area: 1 / 1 / 2 / 2;
}

.local-container {
  position: absolute;
  right: 1.5rem;
  bottom: 5.5rem;
  width: 220px;
  height: 150px;
  z-index: 10;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

.video-overlay {
  position: absolute;
  bottom: 0.75rem;
  left: 0.75rem;
  z-index: 5;
}

.user-tag {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
}

.waiting-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.85);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  z-index: 4;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.call-controls {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  z-index: 20;
}

.control-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.2s;
}

.control-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.control-btn.btn-danger {
  background: var(--danger);
}

.control-btn.btn-danger:hover {
  background: var(--danger-hover);
}

.control-btn.muted {
  background: var(--danger);
}

.hidden {
  display: none !important;
}