/* ==========================================================================
   MTalk - shadcn/ui Design System & Stylesheet
   High Contrast, Responsive Mobile Call Stage & WhatsApp-style Text Chat
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap');

:root {
  /* shadcn/ui Zinc Dark Palette */
  --background: #09090b;
  --foreground: #fafafa;

  --card: #121215;
  --card-hover: #18181b;
  --card-foreground: #fafafa;

  --popover: #121215;
  --popover-foreground: #fafafa;

  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-foreground: #ffffff;
  --primary-glow: rgba(99, 102, 241, 0.3);

  --secondary: #1f1f23;
  --secondary-hover: #27272a;
  --secondary-foreground: #f4f4f5;

  --muted: #18181b;
  --muted-foreground: #a1a1aa;

  --accent: #27272a;
  --accent-foreground: #fafafa;

  --destructive: #ef4444;
  --destructive-hover: #dc2626;
  --destructive-foreground: #ffffff;
  --destructive-glow: rgba(239, 68, 68, 0.3);

  --emerald: #10b981;
  --emerald-glow: rgba(16, 185, 129, 0.25);

  --border: #27272a;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --input: #27272a;
  --ring: #6366f1;

  --radius-sm: 0.375rem; /* 6px */
  --radius-md: 0.5rem;   /* 8px */
  --radius-lg: 0.75rem;  /* 12px */
  --radius-xl: 1rem;     /* 16px */
  --radius-full: 9999px;

  --header-height: 64px;
}

/* ==========================================================================
   RESET & BASE TYPOGRAPHY
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  min-height: 100dvh;
  background-color: var(--background);
  color: var(--foreground);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  overflow-x: hidden;
  line-height: 1.5;
  user-select: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

input, textarea, button, select {
  font-family: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  outline: none;
}

/* Perfect Icon Alignment */
i, svg, [data-lucide], .lucide {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  flex-shrink: 0;
}

/* ==========================================================================
   SHADCN/UI COMPONENT PRIMITIVES
   ========================================================================== */

/* 1. Buttons (Strict Single-Line & Centered Alignment) */
.btn, button, .btn-start-match, .paid-select-mock, .btn-pill, .btn-icon, .btn-draw-card, .rps-btn, .avatar-option-btn {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  flex-direction: row !important;
  white-space: nowrap !important;
  word-break: keep-all !important;
  flex-shrink: 0 !important;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  height: 2.5rem;
  padding: 0 1rem;
  gap: 0.5rem;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1;
  user-select: none;
}

.btn *, button *, .btn-start-match *, .paid-select-mock *, .badge *, .topic-tag * {
  white-space: nowrap !important;
  word-break: keep-all !important;
  flex-shrink: 0 !important;
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--background), 0 0 0 4px var(--ring);
}

.btn:active {
  transform: scale(0.97);
}

.btn-default {
  background-color: var(--primary);
  color: var(--primary-foreground);
  box-shadow: 0 2px 6px var(--primary-glow);
}
.btn-default:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--secondary-foreground);
  border-color: var(--border);
}
.btn-secondary:hover {
  background-color: var(--secondary-hover);
  color: #ffffff;
}

.btn-outline {
  border-color: var(--border);
  background-color: transparent;
  color: var(--foreground);
}
.btn-outline:hover {
  background-color: var(--secondary);
  border-color: var(--secondary-hover);
}

.btn-destructive {
  background-color: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.3);
}
.btn-destructive:hover {
  background-color: rgba(239, 68, 68, 0.25);
  color: #ffffff;
}

.btn-ghost {
  color: var(--muted-foreground);
}
.btn-ghost:hover {
  background-color: var(--secondary);
  color: var(--foreground);
}

.btn-sm {
  height: 2rem;
  padding: 0 0.75rem;
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  gap: 0.35rem;
}

.btn-lg {
  height: 3rem;
  padding: 0 1.5rem;
  font-size: 1rem;
  border-radius: var(--radius-lg);
}

.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.chat-unread-dot {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 9px;
  height: 9px;
  background-color: #ef4444;
  border-radius: 9999px;
  border: 2px solid #121215;
  display: none;
  pointer-events: none;
  z-index: 10;
}

.chat-unread-dot.active {
  display: block;
  animation: unreadDotPulse 1.6s infinite;
}

@keyframes unreadDotPulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
  }
  70% {
    transform: scale(1.05);
    box-shadow: 0 0 0 5px rgba(239, 68, 68, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
  }
}

.btn-pill {
  border-radius: var(--radius-full);
}

/* 2. Badges */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  gap: 0.35rem;
}

.badge-default {
  background-color: var(--primary);
  color: var(--primary-foreground);
}

.badge-secondary {
  background-color: var(--secondary);
  color: var(--secondary-foreground);
  border-color: var(--border);
}

.badge-outline {
  border-color: var(--border);
  color: var(--muted-foreground);
}

.badge-emerald {
  background-color: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}

.badge-amber {
  background-color: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.3);
}

/* 3. Cards */
.card {
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background-color: var(--card);
  color: var(--card-foreground);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

/* 4. Inputs (Square Shape) */
.custom-input, .input {
  display: flex;
  height: 2.75rem;
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--input);
  background-color: #121215;
  padding: 0.5rem 0.85rem;
  font-size: 0.875rem;
  color: var(--foreground);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.custom-input::placeholder, .input::placeholder {
  color: #71717a;
}

.custom-input:focus, .input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

.custom-select {
  display: flex;
  height: 2.6rem;
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--input);
  background-color: #0d0d10;
  padding: 0.5rem 0.85rem;
  font-size: 0.875rem;
  color: var(--foreground);
  outline: none;
  cursor: pointer;
}

.custom-select:focus {
  border-color: var(--primary);
}

/* 5. Switches */
.toggle-checkbox {
  width: 1rem;
  height: 1rem;
  top: 0;
  left: 0;
  transition: transform 0.2s ease-in-out;
}
.toggle-checkbox:checked {
  transform: translateX(100%);
  border-color: var(--emerald);
}
.toggle-checkbox:checked + .toggle-label {
  background-color: var(--emerald);
}

/* ==========================================================================
   APP STRUCTURE & VIEWS
   ========================================================================== */
#app-root {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  width: 100%;
  overflow: hidden;
  background-color: var(--background);
}

#main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.view-screen {
  display: none;
  flex: 1;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.view-screen.active {
  display: flex;
}

/* Header */
.app-header {
  height: var(--header-height);
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  background-color: rgba(9, 9, 11, 0.9);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 50;
  flex-shrink: 0;
}

/* ==========================================================================
   SCREEN 1: LOBBY
   ========================================================================== */
.lobby-container {
  flex: 1;
  display: flex;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  gap: 3rem;
  align-items: center;
  overflow-y: auto;
}

.lobby-left-column {
  flex: 1.2;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-width: 0;
}

.hero-badge {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background-color: var(--secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: #c7d2fe;
}

.hero-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.04em;
  color: #ffffff;
}

.hero-title .highlight {
  color: #818cf8;
  background: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--muted-foreground);
  line-height: 1.6;
  max-width: 540px;
}

/* Mode Selector Cards */
.modes-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.modes-selector-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-foreground);
}

.modes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.mode-card {
  position: relative;
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.2rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.mode-card:hover {
  background-color: var(--card-hover);
  border-color: #3f3f46;
  transform: translateY(-2px);
}

.mode-card.selected {
  background-color: rgba(99, 102, 241, 0.08);
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary), 0 8px 24px rgba(99, 102, 241, 0.15);
}

.mode-icon-circle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--secondary);
  color: var(--foreground);
  transition: all 0.2s ease;
}

.mode-card.selected .mode-icon-circle {
  background-color: var(--primary);
  color: #ffffff;
}

.mode-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
}

.mode-desc {
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

.mode-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  background-color: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

/* Big Start Button */
.btn-start-match {
  width: 100%;
  height: 3.5rem;
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #ffffff;
  border-radius: var(--radius-lg);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  flex-direction: row !important;
  white-space: nowrap !important;
  gap: 0.75rem;
  box-shadow: 0 8px 28px var(--primary-glow);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
}

.btn-start-match:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(99, 102, 241, 0.4);
}

/* Filters Accordion */
.filters-accordion-wrapper {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.filters-accordion-header {
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.15s ease;
}

.filters-accordion-header:hover {
  background-color: var(--secondary);
}

.filters-header-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--foreground);
}

.vip-tag-badge {
  font-size: 0.68rem;
  font-weight: 800;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background-color: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.chevron-icon {
  width: 16px;
  height: 16px;
  color: var(--muted-foreground);
  transition: transform 0.2s ease;
}

.filters-accordion-header.expanded .chevron-icon {
  transform: rotate(180deg);
}

.filters-panel {
  padding: 0 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.filters-panel.collapsed {
  display: none;
}

.filter-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.filter-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted-foreground);
}

.paid-select-mock {
  height: 2.6rem;
  background-color: #0d0d10;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--foreground);
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.paid-select-mock:hover {
  border-color: var(--primary);
}

.topics-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.topic-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  background-color: var(--secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted-foreground);
  cursor: pointer;
  transition: all 0.15s ease;
}

.topic-tag:hover {
  background-color: var(--secondary-hover);
  color: var(--foreground);
}

.topic-tag.active {
  background-color: rgba(99, 102, 241, 0.15);
  border-color: var(--primary);
  color: #c7d2fe;
}

/* Right Column */
.lobby-right-column {
  flex: 0.8;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.lobby-visual-card {
  width: 100%;
  max-width: 520px;
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  box-shadow: none;
}

.hero-svg-img {
  width: 100%;
  max-height: 380px;
  object-fit: contain;
  border-radius: var(--radius-xl);
  border: none;
  box-shadow: none;
  filter: drop-shadow(0 15px 35px rgba(99, 102, 241, 0.2));
  transition: transform 0.3s ease;
}

.hero-svg-img:hover {
  transform: translateY(-4px) scale(1.01);
}

.avatar-option-btn {
  height: auto !important;
  padding: 0.5rem !important;
  flex-direction: column !important;
  border-radius: var(--radius-lg) !important;
  gap: 0.35rem !important;
}

.user-quick-profile-pill {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background-color: var(--secondary);
  border: 1px solid var(--border);
  padding: 0.4rem 1rem 0.4rem 0.5rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.15s ease;
}

.user-quick-profile-pill:hover {
  border-color: var(--primary);
}

.avatar-badge {
  font-size: 1.25rem;
}

.quick-username {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--foreground);
}

.edit-icon {
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 3px;
}

/* ==========================================================================
   SCREEN 2: RADAR QUEUE
   ========================================================================== */
.radar-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  gap: 2rem;
  text-align: center;
}

.radar-wrapper {
  position: relative;
  width: 260px;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.radar-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.radar-ring:nth-child(1) { width: 70px; height: 70px; }
.radar-ring:nth-child(2) { width: 130px; height: 130px; }
.radar-ring:nth-child(3) { width: 190px; height: 190px; }
.radar-ring:nth-child(4) { width: 250px; height: 250px; }

.radar-sweep {
  position: absolute;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: conic-gradient(from 0deg at 50% 50%, rgba(99, 102, 241, 0.35) 0deg, transparent 60deg, transparent 360deg);
  animation: radar-rotate 2s linear infinite;
}

@keyframes radar-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.radar-center-avatar {
  position: relative;
  z-index: 10;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  box-shadow: 0 0 30px var(--primary-glow);
}

.radar-info-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
}

.radar-heading {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.radar-status-text {
  font-size: 0.9rem;
  color: var(--muted-foreground);
}

/* ==========================================================================
   SCREEN 3: VIDEO & VOICE CALL STAGE (2-Box Desktop & Dedicated Phone UI)
   ========================================================================== */

.call-stage-root {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
}

.call-main-column {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* In-Call Reconnecting / Searching Overlay */
.incall-search-overlay {
  position: absolute;
  inset: 0;
  background: rgba(9, 9, 11, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 45;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  animation: modalEnter 0.2s ease-out;
}

.incall-overlay-card {
  position: relative;
  background: #121215;
  border: 1px solid #27272a;
  border-radius: var(--radius-xl);
  padding: 2rem 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.35rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
  max-width: 340px;
  width: 100%;
}

.incall-overlay-spinner {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
}

/* Glowing Viewports */
.video-box-me {
  border: 1px solid rgba(16, 185, 129, 0.35) !important;
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.12) inset !important;
  background-color: var(--card) !important;
}

.video-box-stranger {
  border: 1px solid rgba(99, 102, 241, 0.35) !important;
  box-shadow: 0 0 25px rgba(99, 102, 241, 0.12) inset !important;
  background-color: var(--card) !important;
}

/* Voice Call Mode Animated Aura Rings */
.stranger-avatar-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 10;
}

.voice-aura-rings {
  position: relative;
  width: 130px;
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.voice-aura-ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid rgba(99, 102, 241, 0.35);
  animation: voicePulse 2.4s cubic-bezier(0.1, 0.8, 0.3, 1) infinite;
  pointer-events: none;
}

.voice-aura-ring.ring-1 {
  width: 100%;
  height: 100%;
  animation-delay: 0s;
}

.voice-aura-ring.ring-2 {
  width: 135%;
  height: 135%;
  animation-delay: 0.8s;
}

.voice-aura-ring.ring-3 {
  width: 170%;
  height: 170%;
  animation-delay: 1.6s;
}

@keyframes voicePulse {
  0% {
    transform: scale(0.85);
    opacity: 0.8;
  }
  100% {
    transform: scale(1.4);
    opacity: 0;
  }
}

/* Audio Visualizer Equalizer */
.bar {
  width: 4px;
  height: 4px;
  background-color: #8B5CF6;
  border-radius: 2px;
  animation: sound 0ms -800ms linear infinite alternate;
}

@keyframes sound {
  0% { height: 4px; opacity: 0.4; }
  100% { height: 24px; opacity: 1; }
}

.visualizer-active .bar {
  animation-duration: 400ms;
}

.bar:nth-child(1)  { animation-delay: -200ms; }
.bar:nth-child(2)  { animation-delay: -400ms; }
.bar:nth-child(3)  { animation-delay: -600ms; }
.bar:nth-child(4)  { animation-delay: -800ms; }
.bar:nth-child(5)  { animation-delay: -1000ms; }
.bar:nth-child(6)  { animation-delay: -1200ms; }
.bar:nth-child(7)  { animation-delay: -1400ms; }
.bar:nth-child(8)  { animation-delay: -1600ms; }
.bar:nth-child(9)  { animation-delay: -1800ms; }
.bar:nth-child(10) { animation-delay: -2000ms; }

/* Mirror Video */
.mirror {
  transform: scaleX(-1);
}

/* Scrollbar */
.chat-scroll::-webkit-scrollbar {
  width: 5px;
}
.chat-scroll::-webkit-scrollbar-track {
  background: transparent;
}
.chat-scroll::-webkit-scrollbar-thumb {
  background-color: var(--border);
  border-radius: 20px;
}

/* Message Animation */
@keyframes messagePop {
  0% { opacity: 0; transform: translateY(6px); }
  100% { opacity: 1; transform: translateY(0); }
}

.chat-bubble-row {
  display: flex;
  flex-direction: column;
  width: 100%;
  animation: messagePop 0.2s ease-out forwards;
}

.chat-bubble-mine {
  align-self: flex-end;
  max-width: 80%;
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: #ffffff;
  padding: 0.65rem 1rem;
  border-radius: 1.15rem;
  border-top-right-radius: 4px;
  box-shadow: 0 2px 8px var(--primary-glow);
  word-break: break-word;
  font-size: 0.875rem;
  line-height: 1.45;
}

.chat-bubble-stranger-wrap {
  align-self: flex-start;
  max-width: 80%;
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
}

.stranger-avatar-badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.chat-bubble-stranger {
  background-color: var(--secondary);
  color: #fafafa;
  border: 1px solid var(--border);
  padding: 0.65rem 1rem;
  border-radius: 1.15rem;
  border-top-left-radius: 4px;
  word-break: break-word;
  font-size: 0.875rem;
  line-height: 1.45;
}

.chat-bubble-system {
  align-self: center;
  background-color: var(--secondary);
  color: var(--muted-foreground);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  padding: 0.3rem 0.9rem;
  border: 1px solid var(--border);
}

/* Typing Dots */
.typing-dot {
  animation: typing 1.4s infinite ease-in-out both;
}
.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }
@keyframes typing {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* Reaction Buttons */
.reaction-btn {
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: transform 0.15s ease;
  user-select: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.reaction-btn:hover {
  transform: scale(1.25);
}

/* ==========================================================================
   DEDICATED PHONE CALL INTERFACE & MOBILE RESPONSIVENESS (<= 768px)
   ========================================================================== */
@media (max-width: 768px) {
  .app-header {
    height: 56px;
    padding: 0 1rem;
  }

  .app-header.mobile-header-hidden {
    display: none !important;
  }

  .lobby-container {
    flex-direction: column;
    padding: 1.25rem 1rem;
    gap: 1.5rem;
  }

  .lobby-right-column {
    display: none;
  }

  .modes-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 0.35rem !important;
    width: 100% !important;
  }

  .mode-card {
    padding: 0.75rem 0.35rem !important;
    border-radius: var(--radius-md) !important;
  }
  .mode-name {
    font-size: 0.82rem;
  }
  .mode-desc {
    font-size: 0.68rem;
  }

  .filter-row {
    grid-template-columns: 1fr;
  }

  /* Dedicated Phone Call Interface Stage */
  .call-stage-root {
    position: fixed !important;
    inset: 0 !important;
    width: 100% !important;
    height: 100dvh !important;
    z-index: 40 !important;
  }

  /* Floating Glassmorphic Top Bar for Phone */
  .call-top-bar {
    position: absolute !important;
    top: 12px !important;
    left: 12px !important;
    right: 12px !important;
    z-index: 35 !important;
    border-radius: var(--radius-full) !important;
    background: rgba(18, 18, 22, 0.85) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6) !important;
    padding: 6px 12px !important;
    height: 48px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
  }

  .call-top-bar .flex-shrink-0:first-child {
    display: flex !important;
    align-items: center !important;
    gap: 4px !important;
    flex-shrink: 0 !important;
  }

  .call-top-bar .call-top-tools {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-end !important;
    gap: 5px !important;
    flex-shrink: 0 !important;
  }

  .call-top-bar #callTimer {
    padding: 3px 8px !important;
    font-size: 0.72rem !important;
    gap: 4px !important;
    flex-shrink: 0 !important;
  }

  .call-top-bar button.btn {
    width: 32px !important;
    height: 32px !important;
    padding: 0 !important;
    border-radius: 9999px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex-shrink: 0 !important;
  }

  .call-top-bar .bg-\[\#18181b\] {
    height: 32px !important;
    padding: 0 10px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 6px !important;
    border-radius: 9999px !important;
    background-color: rgba(24, 24, 27, 0.8) !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    flex-shrink: 0 !important;
  }

  /* Dedicated Phone Stage Viewports */
  .video-containers-wrapper {
    position: absolute !important;
    inset: 0 !important;
    width: 100% !important;
    height: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: hidden !important;
  }

  /* Remote Stranger Fullscreen View */
  .stranger-video-box {
    position: absolute !important;
    inset: 0 !important;
    width: 100% !important;
    height: 100% !important;
    border-radius: 0 !important;
    border: none !important;
    z-index: 10 !important;
    background-color: #0c0c0e !important;
  }

  .stranger-video-box video {
    object-fit: cover !important;
  }

  /* Dedicated Floating PiP Card for User's Camera */
  .local-video-box {
    position: absolute !important;
    top: 70px !important;
    right: 12px !important;
    width: 100px !important;
    height: 138px !important;
    flex: none !important;
    border-radius: 16px !important;
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.85) !important;
    border: 2px solid rgba(255, 255, 255, 0.25) !important;
    z-index: 25 !important;
    overflow: hidden !important;
    background: #121215 !important;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }

  .local-video-box #localAvatar .w-20.h-20 {
    width: 44px !important;
    height: 44px !important;
    margin-bottom: 2px !important;
  }

  .local-video-box #localAvatar .user-display-avatar {
    font-size: 1.25rem !important;
    line-height: 1 !important;
  }

  .local-video-box #localVisualizer {
    display: none !important;
  }

  .local-video-box .local-info-pill {
    bottom: 4px !important;
    left: 4px !important;
    padding: 2px 6px !important;
    border-radius: 6px !important;
  }

  .local-video-box .user-display-nickname {
    font-size: 0.65rem !important;
    max-width: 55px !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
  }

  /* Dedicated Floating Bottom Control Dock for Phone (Swipeable Toolbar) */
  .call-control-dock-wrapper {
    position: absolute !important;
    bottom: 16px !important;
    left: 12px !important;
    right: 12px !important;
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    z-index: 35 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  .call-control-dock {
    background: rgba(18, 18, 24, 0.92) !important;
    backdrop-filter: blur(28px) !important;
    -webkit-backdrop-filter: blur(28px) !important;
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
    border-radius: var(--radius-full) !important;
    box-shadow: 0 14px 45px rgba(0, 0, 0, 0.75) !important;
    padding: 6px 12px !important;
    width: auto !important;
    max-width: 100% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    gap: 8px !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    scrollbar-width: none !important;
    -ms-overflow-style: none !important;
  }

  .call-control-dock::-webkit-scrollbar {
    display: none !important;
  }

  #mainActionBtn {
    height: 40px !important;
    padding: 0 14px !important;
    font-size: 0.82rem !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
    border-radius: 9999px !important;
  }

  .call-control-dock .btn-icon {
    width: 40px !important;
    height: 40px !important;
    flex-shrink: 0 !important;
    border-radius: 9999px !important;
  }

  .partner-info-pill {
    bottom: 76px !important;
    left: 14px !important;
  }

  /* Easy-tap Large Touch Target Modal Close Buttons */
  .modal-close-btn {
    width: 2.75rem !important;
    height: 2.75rem !important;
    font-size: 1.15rem !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer !important;
  }

  #closeChatBtn {
    width: 2.75rem !important;
    height: 2.75rem !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
  }
}

@media (max-width: 1024px) {
  .chat-panel-mobile-hidden {
    transform: translateX(100%) !important;
    position: fixed !important;
    top: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    z-index: 60 !important;
    width: 100% !important;
    max-width: 400px !important;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }

  .chat-panel-mobile-visible {
    transform: translateX(0) !important;
    position: fixed !important;
    top: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    z-index: 60 !important;
    width: 100% !important;
    max-width: 400px !important;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }
}

/* ==========================================================================
   MODALS / DIALOGS (shadcn Dialog style)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  width: 100%;
  max-width: 480px;
  background-color: var(--popover);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalEnter 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalEnter {
  0% { opacity: 0; transform: scale(0.96); }
  100% { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-close-btn {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted-foreground);
  transition: all 0.15s ease;
}

.modal-close-btn:hover {
  background-color: var(--secondary);
  color: var(--foreground);
}

.modal-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  overflow-y: auto;
  max-height: 75dvh;
}

/* Toast Notifications (Material Design 3 / shadcn Elevated Pill) */
#toast-container {
  position: fixed;
  bottom: 84px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 150;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  width: auto;
  max-width: 90vw;
}

.toast-msg {
  background: rgba(24, 24, 27, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fafafa;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.7), 0 0 1px rgba(255, 255, 255, 0.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.5rem;
  pointer-events: auto;
  animation: toastMaterialIn 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 100%;
  word-break: break-word;
}

@keyframes toastMaterialIn {
  0% {
    opacity: 0;
    transform: translateY(16px) scale(0.92);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 768px) {
  #toast-container {
    bottom: 76px;
    max-width: calc(100vw - 32px);
  }
  .toast-msg {
    font-size: 0.78rem;
    padding: 0.5rem 0.95rem;
    border-radius: 9999px;
  }
}

/* Tic Tac Toe Grid */
.ttt-board-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  max-width: 260px;
  margin: 0 auto;
}

.ttt-cell {
  width: 76px;
  height: 76px;
  background-color: var(--secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.15s ease;
}

.ttt-cell:hover {
  background-color: var(--secondary-hover);
  border-color: var(--primary);
}

.rps-choice-row {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.rps-btn {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background-color: var(--secondary);
  border: 1px solid var(--border);
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.rps-btn:hover {
  background-color: var(--secondary-hover);
  transform: scale(1.1);
  border-color: var(--primary);
}

.icebreaker-card-view {
  background-color: var(--secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  text-align: center;
  color: var(--foreground);
  line-height: 1.5;
}

.btn-draw-card {
  width: 100%;
  height: 2.75rem;
  border-radius: var(--radius-md);
  background-color: var(--primary);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: background-color 0.15s ease;
}

.btn-draw-card:hover {
  background-color: var(--primary-hover);
}

/* Extra Responsive Adjustments for Small Screens (<= 380px) */
@media (max-width: 380px) {
  .call-control-dock {
    gap: 4px !important;
    padding: 5px 8px !important;
  }
  #mainActionBtn {
    height: 38px !important;
    padding: 0 10px !important;
    font-size: 0.78rem !important;
  }
  .call-control-dock .btn-icon {
    width: 38px !important;
    height: 38px !important;
  }
}