/* style.css - Premium Modern Dark Glassmorphic Design System */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Vazirmatn:wght@300;400;500;700;900&display=swap');

:root {
  --bg-primary: #09090e;
  --bg-secondary: #12121e;
  --bg-glass: rgba(18, 18, 30, 0.65);
  --bg-glass-accent: rgba(255, 255, 255, 0.04);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-active: rgba(139, 92, 246, 0.4);
  
  --accent-purple: #8b5cf6;
  --accent-purple-glow: rgba(139, 92, 246, 0.35);
  --accent-blue: #06b6d4;
  --accent-blue-glow: rgba(6, 182, 212, 0.35);
  --accent-pink: #ec4899;
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  --font-en: 'Outfit', sans-serif;
  --font-fa: 'Vazirmatn', sans-serif;
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-glass) transparent;
}

body {
  font-family: var(--font-fa), var(--font-en), sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.08) 0%, transparent 40%);
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-glass);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-purple);
}

/* Glassmorphism Classes */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
}

.glass-card {
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  transition: var(--transition-smooth);
}

.glass-card:hover {
  border-color: var(--border-glass-active);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(139, 92, 246, 0.1);
}

/* Landing Page Layout */
.landing-container {
  max-width: 500px;
  width: 90%;
  margin: auto;
  padding: 40px 30px;
  margin-top: 5vh;
  margin-bottom: 5vh;
  text-align: center;
}

.brand {
  margin-bottom: 30px;
}

.brand-logo {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: var(--font-en);
  display: inline-block;
  margin-bottom: 5px;
}

.brand p {
  color: var(--text-secondary);
  font-size: 1rem;
}

.form-group {
  margin-bottom: 20px;
  text-align: right;
  direction: rtl;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
  padding-right: 5px;
}

.form-input {
  width: 100%;
  padding: 14px 18px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition-smooth);
  text-align: right;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 12px var(--accent-purple-glow);
}

.room-type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 30px;
}

.type-card {
  padding: 16px 10px;
  border-radius: 12px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.01);
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.type-card i {
  font-size: 1.5rem;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.type-card span {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.type-card.active {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
  border-color: var(--accent-purple);
  box-shadow: 0 8px 20px var(--accent-purple-glow);
}

.type-card.active i {
  color: var(--accent-blue);
  transform: scale(1.1);
}

.type-card.active span {
  color: var(--text-primary);
}

/* Action Buttons */
.btn {
  width: 100%;
  padding: 14px 24px;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-blue) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
  filter: brightness(1.1);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-blue);
}

/* Main Room Layout */
.app-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

.stream-only-layout {
  grid-template-columns: 1fr;
}

/* Streaming Interface */
.main-stage {
  display: flex;
  flex-direction: column;
  position: relative;
  background-color: #050508;
  height: 100%;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.room-header {
  height: 70px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-glass);
  z-index: 10;
  background: rgba(5, 5, 8, 0.7);
  backdrop-filter: blur(10px);
}

.room-title-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.room-badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-stream { background: rgba(236, 72, 153, 0.2); color: var(--accent-pink); border: 1px solid rgba(236, 72, 153, 0.3); }
.badge-conference { background: rgba(139, 92, 246, 0.2); color: var(--accent-purple); border: 1px solid rgba(139, 92, 246, 0.3); }
.badge-call { background: rgba(6, 182, 212, 0.2); color: var(--accent-blue); border: 1px solid rgba(6, 182, 212, 0.3); }

.viewer-count {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--border-glass);
}

.viewer-count .pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--danger);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--danger);
  animation: pulse-animation 1.5s infinite;
}

@keyframes pulse-animation {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.1); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.6; }
}

/* Video Grid Arena */
.video-arena {
  flex: 1;
  padding: 24px;
  display: grid;
  gap: 16px;
  align-content: center;
  justify-content: center;
  overflow-y: auto;
  position: relative;
  min-height: 0;
}

/* Dynamic Grids based on Peer count */
.grid-1 { grid-template-columns: 1fr; max-width: 900px; margin: auto; height: 100%; width: 100%; }
.grid-2 { grid-template-columns: repeat(2, 1fr); max-width: 1200px; margin: auto; }
.grid-3 { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(2, 1fr); max-width: 1200px; margin: auto; }
.grid-4 { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(2, 1fr); max-width: 1200px; margin: auto; }
.grid-multi { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* Stream specific full-page layout */
.stream-grid {
  display: flex;
  height: 100%;
  width: 100%;
  justify-content: center;
  align-items: center;
}

/* Video Wrapper Card */
.video-card {
  position: relative;
  background: #0d0d14;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  transition: var(--transition-smooth);
  aspect-ratio: 16/9;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-card.active-speaker {
  border-color: var(--accent-purple);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.25);
}

.video-card video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1); /* Flip user video for local mirror feel */
}

/* Local remote peer video should not be flipped */
.video-card.remote-video video {
  transform: scaleX(1);
}

/* User Overlay Details */
.video-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 5;
  pointer-events: none;
}

.overlay-user {
  display: flex;
  align-items: center;
  gap: 8px;
}

.username-tag {
  font-size: 0.9rem;
  font-weight: 500;
  color: white;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  background: rgba(0, 0, 0, 0.4);
  padding: 4px 10px;
  border-radius: 8px;
  backdrop-filter: blur(4px);
}

.media-badges {
  display: flex;
  gap: 6px;
}

.media-badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  border: 1px solid var(--border-glass);
}

.media-badge.muted {
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.3);
}

/* Video Placeholder (Camera Off) */
.video-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, #1b1b2f 0%, #0d0d14 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 15px;
  z-index: 2;
  transition: var(--transition-smooth);
}

.placeholder-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-blue) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: white;
  box-shadow: 0 10px 25px rgba(139, 92, 246, 0.3);
}

.placeholder-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.video-card.video-on .video-placeholder {
  opacity: 0;
  pointer-events: none;
}

/* Bottom Controls Dashboard */
.dashboard-controls {
  height: 85px;
  border-top: 1px solid var(--border-glass);
  background: rgba(5, 5, 8, 0.85);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
  z-index: 10;
}

.controls-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ctrl-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  font-size: 1.1rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ctrl-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  transform: translateY(-2px);
}

.ctrl-btn.active {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--danger);
  color: var(--danger);
}

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

.btn-end-call {
  background: var(--danger) !important;
  color: white !important;
  border: none !important;
  width: auto !important;
  border-radius: 24px !important;
  padding: 0 24px !important;
  font-weight: 600 !important;
}

.btn-end-call:hover {
  box-shadow: 0 5px 15px rgba(239, 68, 68, 0.4) !important;
  transform: translateY(-2px) !important;
  filter: brightness(1.1);
}

/* Floating WebRTC Quality Monitor */
.network-indicator-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
}

.signal-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 12px;
}

.bar {
  width: 3px;
  background-color: var(--text-muted);
  border-radius: 1px;
}

.bar-1 { height: 30%; }
.bar-2 { height: 50%; }
.bar-3 { height: 75%; }
.bar-4 { height: 100%; }

.signal-good .bar { background-color: var(--success); }
.signal-medium .bar-1, .signal-medium .bar-2, .signal-medium .bar-3 { background-color: var(--warning); }
.signal-poor .bar-1 { background-color: var(--danger); }

/* Sidebar: Right panel (Chat & Participant List) */
.sidebar {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border-glass);
  background-color: #0b0b11;
  height: 100%;
  overflow: hidden;
}

.tabs-header {
  display: flex;
  border-bottom: 1px solid var(--border-glass);
  background: rgba(0,0,0,0.2);
}

.tab-btn {
  flex: 1;
  padding: 16px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  font-family: inherit;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent-purple);
  border-bottom-color: var(--accent-purple);
}

.sidebar-content {
  flex: 1;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

.tab-panel {
  display: none;
  height: 100%;
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  flex-direction: column;
}

.tab-panel.active {
  display: flex;
  position: relative;
}

/* Chat Tab Layout */
.chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  direction: rtl;
}

.chat-bubble {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 85%;
  align-self: flex-start;
  text-align: right;
}

.chat-bubble.me {
  align-self: flex-end;
}

.chat-bubble-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.chat-bubble-body {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.9rem;
  line-height: 1.4;
  word-break: break-word;
}

.chat-bubble.me .chat-bubble-body {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.25) 0%, rgba(139, 92, 246, 0.1) 100%);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--text-primary);
  border-top-right-radius: 2px;
}

.chat-bubble:not(.me) .chat-bubble-body {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  border-top-left-radius: 2px;
}

.chat-input-area {
  padding: 16px;
  border-top: 1px solid var(--border-glass);
  background: rgba(0,0,0,0.15);
  display: flex;
  gap: 8px;
  direction: rtl;
}

.chat-input-area input {
  flex: 1;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--border-glass);
  background: rgba(0, 0, 0, 0.3);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  text-align: right;
}

.chat-input-area input:focus {
  outline: none;
  border-color: var(--accent-purple);
}

.chat-send-btn {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: none;
  background: var(--accent-purple);
  color: white;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.chat-send-btn:hover {
  background: var(--accent-blue);
  transform: scale(1.05);
}

/* Participants Tab */
.participant-list {
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  direction: rtl;
}

.participant-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: 10px;
}

.participant-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--border-glass-active);
  color: var(--text-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.participant-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.participant-name-wrapper {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.participant-name {
  font-size: 0.9rem;
  font-weight: 500;
}

.participant-role {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Quality Tuning Control Panel (Floating inside Stage) */
.tuning-trigger {
  position: absolute;
  top: 90px;
  right: 24px;
  z-index: 100;
}

.tuning-trigger .ctrl-btn {
  background: var(--bg-glass);
  backdrop-filter: blur(8px);
}

.tuning-panel {
  position: absolute;
  top: 145px;
  right: 24px;
  width: 280px;
  padding: 20px;
  z-index: 99;
  display: none;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.5);
  direction: rtl;
  text-align: right;
}

.tuning-panel.active {
  display: flex;
  animation: slide-down 0.25s ease-out;
}

@keyframes slide-down {
  from { transform: translateY(-10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.tuning-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-blue);
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 8px;
  margin-bottom: 4px;
}

.tuning-option {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tuning-option label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Quality select drop-down styled */
.tuning-select {
  padding: 10px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
  width: 100%;
}

.tuning-select:focus {
  border-color: var(--accent-purple);
}

.stat-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  padding: 4px 0;
}

.stat-label {
  color: var(--text-secondary);
}

.stat-value {
  font-family: var(--font-en);
  font-weight: 500;
}

/* Alerts / Fullscreen Notifications */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  max-width: 400px;
  width: 90%;
  padding: 30px;
  text-align: center;
}

.modal-content h3 {
  margin-bottom: 12px;
  font-size: 1.4rem;
  color: var(--danger);
}

.modal-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
  line-height: 1.5;
}

/* Responsive adjustments */
/* Responsive adjustments & Collapsed Sidebar */
.app-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  transition: grid-template-columns 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.app-layout.sidebar-collapsed {
  grid-template-columns: minmax(0, 1fr) 0px;
}

.sidebar {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border-glass);
  background-color: #0b0b11;
  height: 100%;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
  .app-layout {
    grid-template-columns: 1fr !important;
    grid-template-rows: 1fr !important;
    position: relative;
  }
  
  .sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 320px;
    height: 100%;
    z-index: 500;
    border-left: 1px solid var(--border-glass);
    border-top: none;
    transform: translateX(100%);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
  }

  .sidebar.active {
    transform: translateX(0);
  }
  
  .room-header {
    padding: 0 16px;
    height: 60px;
  }
  
  .dashboard-controls {
    padding: 0 12px;
    height: 75px;
    gap: 6px;
  }
  
  .ctrl-btn {
    width: 38px;
    height: 38px;
    font-size: 0.95rem;
  }

  .btn-end-call {
    padding: 0 16px !important;
    font-size: 0.85rem !important;
  }
}

/* Collaborative Whiteboard Overlay */
.whiteboard-container {
  position: absolute;
  top: 70px; /* Below the room header */
  left: 0;
  right: 0;
  bottom: 85px; /* Above the bottom controls dashboard */
  z-index: 200;
  background: rgba(10, 10, 16, 0.88);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  user-select: none;
}

#whiteboardCanvas {
  width: 100%;
  height: 100%;
  cursor: crosshair;
  background: transparent;
}

/* Whiteboard Toolbar styled floating */
.whiteboard-toolbar {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 18px;
  border-radius: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  z-index: 210;
  border: 1px solid var(--border-glass);
}

.toolbar-section {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toolbar-divider {
  width: 1px;
  height: 24px;
  background: var(--border-glass);
}

.color-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition-smooth);
}

.color-dot:hover {
  transform: scale(1.2);
}

.color-dot.active {
  border-color: white;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
  transform: scale(1.1);
}

.toolbar-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
  font-size: 0.9rem;
}

.toolbar-btn:hover, .toolbar-btn.active {
  background: var(--accent-purple);
  border-color: var(--accent-purple);
  color: white;
}

.dot-size {
  background-color: var(--text-primary);
  border-radius: 50%;
  display: inline-block;
}

.dot-size.thin { width: 4px; height: 4px; }
.dot-size.medium { width: 8px; height: 8px; }
.dot-size.thick { width: 14px; height: 14px; }

.toolbar-btn.active .dot-size {
  background-color: white;
}

.toolbar-btn.btn-danger {
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.3);
}

.toolbar-btn.btn-danger:hover {
  background: rgba(239, 68, 68, 0.2);
  color: white;
  border-color: var(--danger);
}

.toolbar-btn.btn-accent {
  color: var(--accent-blue);
  border-color: rgba(6, 182, 212, 0.3);
}

.toolbar-btn.btn-accent:hover {
  background: rgba(6, 182, 212, 0.2);
  color: white;
  border-color: var(--accent-blue);
}

/* Welcome Toast Notification Styling */
.welcome-toast {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 12px 20px;
  border-radius: 12px;
  border: 1px solid var(--border-glass-active);
  box-shadow: 0 10px 25px rgba(139, 92, 246, 0.25);
  pointer-events: auto;
  animation: slide-in-toast 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  max-width: 320px;
  width: 100%;
}

@keyframes slide-in-toast {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.welcome-toast.fade-out {
  animation: slide-out-toast 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes slide-out-toast {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(120%); opacity: 0; }
}

.toast-icon {
  font-size: 1.5rem;
  color: var(--accent-purple);
  filter: drop-shadow(0 0 5px var(--accent-purple-glow));
}

.toast-content h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: white;
  margin-bottom: 2px;
}

.toast-content p {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Make sure the toolbar is touch friendly on mobile */
@media (max-width: 768px) {
  .whiteboard-container {
    top: 60px;
    bottom: 75px;
  }
  .whiteboard-toolbar {
    padding: 6px 12px;
    gap: 8px;
    bottom: 10px;
    border-radius: 20px;
    width: 95%;
  }
  .color-dot {
    width: 16px;
    height: 16px;
  }
  .toolbar-btn {
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
  }
}