:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.3);
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-main: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.15) 0px, transparent 50%);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

.brand-icon svg {
  width: 24px;
  height: 24px;
  stroke: white;
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(180deg, #ffffff 0%, #d1d5db 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  padding: 0.4rem 0.9rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 8px var(--danger);
}

.status-dot.online {
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}

/* Main Grid */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
  .cards-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-main);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  border-color: var(--border-glow);
}

.card-header {
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Share Screen (Host) */
.pin-display-box {
  background: rgba(0, 0, 0, 0.35);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  margin-bottom: 1.5rem;
}

.pin-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.pin-code {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: 6px;
  color: #a5b4fc;
  font-family: 'Courier New', monospace;
  margin: 0.25rem 0;
  user-select: all;
}

.pin-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
}

.host-preview {
  margin-top: 1rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: #000;
  display: none;
}

.host-preview video {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
}

/* Join Screen (Client) */
.input-group {
  margin-bottom: 1.5rem;
}

.input-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.pin-input {
  width: 100%;
  padding: 1rem;
  font-size: 1.5rem;
  letter-spacing: 4px;
  text-align: center;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: white;
  outline: none;
  font-weight: 700;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.pin-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.pin-input::placeholder {
  color: var(--text-dim);
  letter-spacing: 2px;
  font-size: 1.1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  width: 100%;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.25);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: white;
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Features List */
.features-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.features-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}

.feature-item {
  display: flex;
  gap: 0.75rem;
}

.feature-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(99, 102, 241, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.feature-info h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.feature-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.3;
}

/* Alerts and Toast */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: white;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}