@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap");

/* ─── Design Tokens ──────────────────────────────────────────── */
:root {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.9);
  --border-glass: rgba(226, 232, 240, 0.9);
  --accent-primary: #6366f1;
  --accent-secondary: #0d9488;
  --accent-danger: #ef4444;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --shadow-glow: 0 10px 30px rgba(99, 102, 241, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset & Base ───────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* ─── Background Mesh Gradient ───────────────────────────────── */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(
      ellipse 80% 60% at 20% 0%,
      rgba(99, 102, 241, 0.07) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse 60% 40% at 80% 100%,
      rgba(13, 148, 136, 0.07) 0%,
      transparent 60%
    );
  pointer-events: none;
}

/* ─── Glass Card ─────────────────────────────────────────────── */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 50px -15px rgba(15, 23, 42, 0.08);
}

/* ─── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  outline: none;
  transition: all var(--transition);
  letter-spacing: 0.01em;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    hsl(250, 80%, 55%)
  );
  color: #fff;
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(108, 99, 255, 0.55);
}
.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: #f1f5f9;
  color: var(--text-primary);
  border: 1px solid #e2e8f0;
}
.btn-secondary:hover {
  background: #e2e8f0;
  border-color: #cbd5e1;
}

.btn-danger {
  background: linear-gradient(135deg, var(--accent-danger), #dc2626);
  color: #fff;
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
}
.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(239, 68, 68, 0.45);
}

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 50%;
  font-size: 1.25rem;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.btn-icon:hover {
  background: #f1f5f9;
}
.btn-icon.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}
.btn-icon.danger {
  background: var(--accent-danger);
  border-color: var(--accent-danger);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.4);
}

/* ─── Input ──────────────────────────────────────────────────── */
.input-field {
  width: 100%;
  padding: 14px 18px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition);
  outline: none;
}
.input-field::placeholder {
  color: var(--text-muted);
}
.input-field:focus {
  border-color: var(--accent-primary);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* ─── Landing Page ───────────────────────────────────────────── */
.landing-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
}

.landing-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 3rem;
  animation: fadeDown 0.6s ease;
}
.landing-logo .logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}
.landing-logo h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #0f172a;
}

.landing-card {
  width: 100%;
  max-width: 460px;
  padding: 2.5rem;
  animation: fadeUp 0.5s ease;
}

.landing-card h2 {
  font-size: 1.9rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}
.landing-card .subtitle {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 1.5rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border-glass);
}

.form-group {
  margin-bottom: 1rem;
}
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  font-size: 0.9rem;
  z-index: 9999;
  transition: transform 0.3s ease;
  white-space: nowrap;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
}
.toast.error {
  border-color: var(--accent-danger);
  color: var(--accent-danger);
}
.toast.success {
  border-color: var(--accent-success);
  color: var(--accent-success);
}

/* ─── Room Page ──────────────────────────────────────────────── */
.room-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Top Header */
.room-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}
.room-header .logo-sm {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  color: #0f172a;
}
.room-header .logo-sm span {
  width: 30px;
  height: 30px;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #ffffff;
}
.room-code-badge {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  border-radius: 30px;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
  color: #0f172a;
}
.room-code-badge:hover {
  background: #e2e8f0;
  border-color: var(--accent-primary);
}

/* Video Grid */
/* Video Grid & Tiles Layout */
.video-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1rem;
  position: relative;
  width: 100%;
  height: calc(100vh - 130px);
  min-height: 0;
  box-sizing: border-box;
}

.video-grid {
  display: grid;
  gap: 16px;
  width: 100%;
  min-height: 100%;
  max-width: 1400px;
  align-content: center;
  justify-content: center;
  box-sizing: border-box;
  margin: 0 auto;
}

/* 1 Participant */
.video-grid.grid-1 {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  max-width: 900px;
}

/* 2 Participants (1 Row x 2 Cols) */
.video-grid.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: 1fr;
  max-width: 1200px;
}

/* 3 Participants (2 Cols, 2 Rows) */
.video-grid.grid-3 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  max-width: 1100px;
}
.video-grid.grid-3 .video-tile:nth-child(3):last-child {
  grid-column: 1 / -1;
  max-width: 50%;
  justify-self: center;
}

/* 4 Participants (2 Rows x 2 Cols) */
.video-grid.grid-4 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  max-width: 1200px;
}

/* 5-6 Participants (2 Rows x 3 Cols) */
.video-grid.grid-6 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  max-width: 1350px;
}
.video-grid.grid-6 .video-tile:nth-child(5):last-child {
  grid-column: 2;
}

/* 7-9 Participants (3 Rows x 3 Cols) */
.video-grid.grid-9 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: repeat(3, minmax(0, 1fr));
  max-width: 1350px;
}

/* 10+ Participants */
.video-grid.grid-many {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  align-content: start;
  max-width: 1400px;
}

.video-grid.grid-many .video-tile {
  height: auto;
  max-height: none;
}

.video-tile {
  position: relative;
  background: #ffffff;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: 16 / 9;
  margin: auto;
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
  transition: all var(--transition);
}
.video-tile.is-speaking {
  border-color: var(--accent-primary);
  box-shadow:
    0 0 0 3px rgba(99, 102, 241, 0.35),
    0 8px 24px rgba(99, 102, 241, 0.15);
}
.video-tile.local-tile {
  border-color: var(--accent-secondary);
}

/* Video sits behind the overlay */
.video-tile video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  border-radius: calc(var(--radius-lg) - 1px);
}

.cam-off-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  z-index: 2;
}

.avatar-placeholder {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #0d9488);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.1rem;
  font-weight: 700;
  color: #ffffff;
  flex-shrink: 0;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.25);
}
.avatar-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #0f172a;
  margin-top: 4px;
}

.peer-label {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid #cbd5e1;
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 6px;
  z-index: 4;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}
.mic-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-success);
}
.mic-indicator.muted {
  background: var(--accent-danger);
}

/* Overlay sits ABOVE the video */
.cam-off-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, #f8fafc 0%, #e2e8f0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  z-index: 2;
}

/* Controls Bar */
.room-controls {
  position: relative;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 1rem 2rem;
  background: rgba(255, 255, 255, 0.95);
  border-top: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.04);
}

.participants-count {
  position: absolute;
  right: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.participants-count::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-success);
  animation: pulse 2s infinite;
}

/* Connection Status */
.conn-status {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 20px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 100;
  transition: all var(--transition);
  pointer-events: none;
}
.conn-status.connecting {
  background: rgba(246, 173, 85, 0.15);
  border: 1px solid var(--accent-warning);
  color: var(--accent-warning);
}
.conn-status.connected {
  background: rgba(72, 187, 120, 0.15);
  border: 1px solid var(--accent-success);
  color: var(--accent-success);
  animation: fadeOut 0.5s ease 2s forwards;
}
.conn-status.failed {
  background: rgba(252, 79, 109, 0.15);
  border: 1px solid var(--accent-danger);
  color: var(--accent-danger);
  pointer-events: all;
}

/* Waiting banner — absolute overlay so it doesn't push the grid */
.waiting-banner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  text-align: center;
  background: rgba(248, 250, 252, 0.8);
  backdrop-filter: blur(6px);
  z-index: 10;
  pointer-events: none;
}
.waiting-banner button {
  pointer-events: all;
}
.waiting-banner .pulse-ring {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 2px solid var(--accent-primary);
  animation: pulseRing 2s ease infinite;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}

/* ─── Docs Page ──────────────────────────────────────────────── */
.docs-wrapper {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.docs-header {
  text-align: center;
  margin-bottom: 3rem;
  animation: fadeDown 0.6s ease;
}
.docs-header .badge {
  display: inline-block;
  background: rgba(108, 99, 255, 0.15);
  border: 1px solid rgba(108, 99, 255, 0.3);
  color: var(--accent-primary);
  border-radius: 30px;
  padding: 5px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.docs-header h1 {
  font-size: 2.8rem;
  font-weight: 800;
  background: linear-gradient(
    135deg,
    var(--text-primary) 40%,
    var(--accent-secondary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
}
.docs-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.docs-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 3rem;
}
.docs-nav a {
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  transition: all var(--transition);
}
.docs-nav a:hover {
  background: rgba(108, 99, 255, 0.1);
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.docs-section {
  margin-bottom: 2.5rem;
  animation: fadeUp 0.5s ease;
}
.docs-section-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  gap: 10px;
}
.docs-section-title .section-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.section-icon.purple {
  background: rgba(108, 99, 255, 0.2);
}
.section-icon.teal {
  background: rgba(79, 209, 197, 0.2);
}
.section-icon.orange {
  background: rgba(246, 173, 85, 0.2);
}

.endpoint-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
}
.endpoint-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  cursor: pointer;
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}
.endpoint-header:hover {
  background: rgba(255, 255, 255, 0.03);
}
.endpoint-header.open {
  border-bottom-color: var(--border-glass);
}
.method-badge {
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.method-badge.post {
  background: rgba(72, 187, 120, 0.2);
  color: var(--accent-success);
}
.method-badge.get {
  background: rgba(108, 99, 255, 0.2);
  color: var(--accent-primary);
}

.endpoint-url {
  font-family: "Courier New", monospace;
  font-size: 0.9rem;
  color: var(--text-primary);
}
.endpoint-desc {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.endpoint-body {
  padding: 18px;
  display: none;
}
.endpoint-body.show {
  display: block;
}

.code-block {
  background: #0d1117;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-family: "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  overflow-x: auto;
  color: #e6edf3;
}
.code-block .key {
  color: #79c0ff;
}
.code-block .str {
  color: #a5d6ff;
}
.code-block .num {
  color: #ffa657;
}
.code-block .bool {
  color: #ff7b72;
}
.code-block .comment {
  color: #8b949e;
}

.event-table {
  width: 100%;
  border-collapse: collapse;
}
.event-table th,
.event-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-glass);
  font-size: 0.9rem;
}
.event-table th {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(255, 255, 255, 0.02);
}
.event-table td:first-child {
  font-family: monospace;
  color: var(--accent-secondary);
  font-weight: 600;
}
.event-table tr:last-child td {
  border-bottom: none;
}

.flow-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.flow-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.step-number {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    hsl(250, 80%, 55%)
  );
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
}
.step-content h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.step-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.step-content code {
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent-primary);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.8rem;
}

/* ─── Animations ─────────────────────────────────────────────── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fadeDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fadeOut {
  to {
    opacity: 0;
    pointer-events: none;
  }
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}
@keyframes pulseRing {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}

/* ─── Utilities ──────────────────────────────────────────────── */
.text-gradient {
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-sm {
  font-size: 0.85rem;
}
.text-muted {
  color: var(--text-muted);
}
.text-secondary-color {
  color: var(--text-secondary);
}
.mt-1 {
  margin-top: 0.5rem;
}
.mt-2 {
  margin-top: 1rem;
}
.mb-1 {
  margin-bottom: 0.5rem;
}
.mb-2 {
  margin-bottom: 1rem;
}
.w-full {
  width: 100%;
}
.flex {
  display: flex;
}
.gap-2 {
  gap: 0.5rem;
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 640px) {
  .landing-card {
    padding: 1.5rem;
  }
  .docs-header h1 {
    font-size: 2rem;
  }
  .room-controls {
    gap: 8px;
    padding: 0.75rem 1rem;
  }
  .video-grid.grid-2 {
    grid-template-columns: 1fr;
  }
}

/* ─── Clickable Participant Badge ────────────────────────────── */
.clickable-badge {
  cursor: pointer;
  transition:
    transform var(--transition),
    background-color var(--transition);
}
.clickable-badge:hover {
  background: rgba(255, 255, 255, 0.12) !important;
  transform: scale(1.03);
}

/* ─── Modal System ────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}
.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  width: 90%;
  max-width: 440px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-xl);
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.15);
  overflow: hidden;
  transform: translateY(20px) scale(0.95);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  max-height: 85vh;
}
.modal-overlay.show .modal-card {
  transform: translateY(0) scale(1);
}

.modal-card-sm {
  max-width: 360px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid #f1f5f9;
  background: #f8fafc;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.modal-close-btn:hover {
  color: var(--text-primary);
  background: #e2e8f0;
}

.modal-body {
  padding: 1.25rem 1.5rem;
  overflow-y: auto;
}

/* ─── Participant List Items ─────────────────────────────────── */
.participants-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.participant-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  transition: all var(--transition);
}
.participant-item:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.participant-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.participant-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 2px 8px rgba(108, 99, 255, 0.3);
}

.participant-name-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
}

.participant-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.badge-host {
  background: rgba(79, 209, 197, 0.18);
  color: #4fd1c5;
  border: 1px solid rgba(79, 209, 197, 0.3);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-you {
  background: rgba(108, 99, 255, 0.18);
  color: #a78bfa;
  border: 1px solid rgba(108, 99, 255, 0.3);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 600;
}

.participant-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-icon {
  font-size: 1.05rem;
  opacity: 0.9;
  user-select: none;
}
.status-icon.off {
  opacity: 0.4;
}

.btn-kick {
  background: rgba(252, 79, 109, 0.15);
  color: var(--accent-danger);
  border: 1px solid rgba(252, 79, 109, 0.3);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  margin-left: 6px;
}
.btn-kick:hover {
  background: var(--accent-danger);
  color: #fff;
  box-shadow: 0 0 12px rgba(252, 79, 109, 0.4);
}

.host-ctrl-btn {
  background: none;
  border: none;
  padding: 2px 4px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1.05rem;
  opacity: 0.9;
  transition:
    background var(--transition),
    transform var(--transition);
}
.host-ctrl-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: scale(1.18);
}
.host-ctrl-btn.off {
  opacity: 0.4;
  cursor: default;
}

/* ─── Hand Raised & Emoji Reactions ───────────────────────────── */

/* Active Raise Hand Button */
.btn-icon.hand-raised {
  background: #f6ad55;
  border-color: #f6ad55;
  box-shadow: 0 0 20px rgba(246, 173, 85, 0.6);
  animation: pulse 1.5s infinite;
}

/* Hand Raised Badge on Video Tile */
.hand-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 10;
  background: rgba(246, 173, 85, 0.95);
  color: #1a202c;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 1rem;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 4px;
  animation: fadeUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.badge-hand {
  background: rgba(246, 173, 85, 0.2);
  color: #f6ad55;
  border: 1px solid rgba(246, 173, 85, 0.4);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 600;
}

/* Emoji Reaction Popover Menu */
.emoji-picker-popover {
  position: absolute;
  bottom: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(10px) scale(0.94);
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid #cbd5e1;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 40px;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.2s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0.2s;
  z-index: 1000;
}
.emoji-picker-popover::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background: rgba(255, 255, 255, 0.98);
  border-right: 1px solid #cbd5e1;
  border-bottom: 1px solid #cbd5e1;
}
.emoji-picker-popover.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0) scale(1);
}

.emoji-option {
  background: transparent;
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    transform 0.18s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    background-color 0.18s ease,
    box-shadow 0.18s ease;
  user-select: none;
  position: relative;
  z-index: 1;
}
.emoji-option:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: scale(1.35) translateY(-2px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}
.emoji-option:active {
  transform: scale(1.1) translateY(0);
}

/* Floating Emoji Overlay Container on Video Tile */
.reaction-container {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.floating-emoji {
  position: absolute;
  bottom: 20px;
  left: 50%;
  font-size: 2.5rem;
  pointer-events: none;
  animation: floatEmojiUp 2.2s ease-out forwards;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.5));
}

@keyframes floatEmojiUp {
  0% {
    opacity: 0;
    transform: translate(-50%, 0) scale(0.5) rotate(0deg);
  }
  15% {
    opacity: 1;
    transform: translate(-50%, -40px) scale(1.3) rotate(-5deg);
  }
  50% {
    opacity: 0.9;
    transform: translate(-60%, -120px) scale(1.1) rotate(5deg);
  }
  100% {
    opacity: 0;
    transform: translate(-40%, -220px) scale(0.8) rotate(-10deg);
  }
}

/* ─── In-Meeting Chat Drawer & Messages ────────────────────────── */
.chat-unread-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--accent-danger);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  box-shadow: 0 2px 8px rgba(252, 79, 109, 0.5);
  opacity: 0;
  transform: scale(0.6);
  transition: all var(--transition);
  pointer-events: none;
}
.chat-unread-badge.show {
  opacity: 1;
  transform: scale(1);
}

.chat-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 360px;
  max-width: 90vw;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid #e2e8f0;
  z-index: 900;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.08);
}
.chat-drawer.show {
  transform: translateX(0);
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid #e2e8f0;
  background: #f8fafc;
}
.chat-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.chat-close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.chat-close-btn:hover {
  color: var(--text-primary);
  background: #e2e8f0;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.chat-message-item {
  display: flex;
  flex-direction: column;
  max-width: 86%;
  animation: fadeUp 0.25s ease-out;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}
.chat-message-item.deleting {
  opacity: 0;
  transform: scale(0.9);
}

.chat-message-item.sent {
  align-self: flex-end;
}
.chat-message-item.received {
  align-self: flex-start;
}

.chat-msg-header {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 4px;
  padding-left: 2px;
}

.chat-msg-content-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
}

.chat-msg-bubble {
  padding: 10px 14px;
  word-break: break-word;
  line-height: 1.45;
}

.chat-message-item.sent .chat-msg-bubble {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #ffffff;
  border-radius: 18px 18px 4px 18px;
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.25);
}

.chat-message-item.received .chat-msg-bubble {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: var(--text-primary);
  border-radius: 18px 18px 18px 4px;
}

.chat-msg-text {
  font-size: 0.92rem;
  font-weight: 400;
  margin-bottom: 4px;
}

.chat-msg-meta {
  font-size: 0.7rem;
  opacity: 0.75;
  text-align: right;
}

.chat-msg-menu-container {
  position: relative;
}

.btn-msg-menu {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 4px;
  opacity: 0.5;
  border-radius: 50%;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-msg-menu:hover {
  opacity: 1;
  color: var(--text-primary);
  background: #e2e8f0;
}

.chat-popover {
  position: absolute;
  top: 50%;
  right: calc(100% + 6px);
  transform: translateY(-50%) scale(0.9);
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 4px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.15s ease;
  z-index: 50;
  white-space: nowrap;
}
.chat-popover.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}

.chat-popover-item {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  width: 100%;
  transition: all var(--transition);
}
.chat-popover-item.danger {
  color: var(--accent-danger);
}
.chat-popover-item.danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

.chat-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid #e2e8f0;
  background: #f8fafc;
  display: flex;
  align-items: center;
  gap: 10px;
}

.chat-input {
  flex: 1;
  padding: 12px 16px;
  font-size: 0.9rem;
  border-radius: var(--radius-xl);
}

.btn-chat-send {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  padding: 0;
  font-size: 1rem;
}

/* ─── Bottom-Left Overlay Chat Toast Stack ─────────────────────── */
.chat-toast-container {
  position: absolute;
  bottom: 24px;
  left: 24px;
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  max-width: 320px;
  width: calc(100% - 48px);
}

.chat-toast-item {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid #cbd5e1;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: #0f172a;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
  pointer-events: auto;
  cursor: pointer;
  animation: fadeUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transition:
    opacity 0.3s ease,
    transform 0.3s ease,
    box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.chat-toast-item:hover {
  background: #ffffff;
  border-color: var(--accent-primary);
  box-shadow: 0 12px 36px rgba(15, 23, 42, 0.18);
}
.chat-toast-item.hide {
  opacity: 0;
  transform: translateY(12px) scale(0.92);
}
.chat-toast-sender {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.chat-toast-text {
  font-size: 0.88rem;
  color: #0f172a;
  word-break: break-word;
  line-height: 1.4;
}