/**
 * =====================================================
 * LIBRAS ACCESSIBILITY - Sala de Reunião Acessível
 * =====================================================
 * 
 * Design inspirado em plataformas de videoconferência
 * com integração de acessibilidade em Libras
 */

/* ==================== RESET E BASE ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Cores principais - Tema Escuro */
  --bg-primary: #0f0f17;
  --bg-secondary: #1a1a25;
  --bg-tertiary: #252535;
  --bg-hover: #35354a;
  --bg-card: #1e1e2d;
  
  /* Cores de texto */
  --text-primary: #ffffff;
  --text-secondary: #a0a0b5;
  --text-muted: #606075;
  
  /* Cores de destaque */
  --accent-green: #00c853;
  --accent-blue: #2979ff;
  --accent-red: #ff1744;
  --accent-yellow: #ffc107;
  --accent-purple: #7c4dff;
  
  /* Status */
  --mic-on: #00c853;
  --mic-off: #ff1744;
  --camera-on: #2979ff;
  --camera-off: #ff1744;
  
  /* Bordas e sombras */
  --border-color: rgba(255, 255, 255, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
  
  /* Dimensões */
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --spacing: 16px;
}

html, body {
  height: 100%;
}

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* ==================== TELA DE PERMISSÕES ==================== */
.permissions-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, #1a1a30 100%);
  z-index: 1000;
}

.permissions-screen.hidden {
  display: none;
}

.permissions-card {
  background: var(--bg-card);
  padding: 48px;
  border-radius: var(--border-radius-lg);
  text-align: center;
  max-width: 480px;
  width: 90%;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.permissions-icon {
  font-size: 64px;
  margin-bottom: 24px;
}

.permissions-card h1 {
  font-size: 28px;
  margin-bottom: 12px;
  font-weight: 700;
}

.permissions-card > p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 32px;
}

.permissions-checklist {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius);
  padding: 16px;
  margin-bottom: 24px;
}

.permission-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 8px;
  transition: background 0.2s;
}

.permission-item:hover {
  background: var(--bg-hover);
}

.perm-icon {
  font-size: 24px;
}

.perm-text {
  flex: 1;
  text-align: left;
  font-weight: 500;
}

.perm-status {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 20px;
  background: var(--bg-hover);
  color: var(--text-muted);
}

.perm-status.granted {
  background: rgba(0, 200, 83, 0.15);
  color: var(--accent-green);
}

.perm-status.denied {
  background: rgba(255, 23, 68, 0.15);
  color: var(--accent-red);
}

.btn-permissions {
  width: 100%;
  padding: 16px 32px;
  font-size: 16px;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(41, 121, 255, 0.3);
}

.btn-permissions:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(41, 121, 255, 0.4);
}

.btn-permissions:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.permissions-note {
  margin-top: 20px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ==================== SALA DE REUNIÃO ==================== */
.meeting-room {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

.meeting-room.hidden {
  display: none;
}

/* ==================== CABEÇALHO DA REUNIÃO ==================== */
.meeting-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.meeting-info {
  display: flex;
  align-items: center;
  gap: 20px;
}

.meeting-info h1 {
  font-size: 18px;
  font-weight: 600;
}

.meeting-time {
  font-size: 14px;
  color: var(--text-secondary);
  font-family: 'Courier New', monospace;
  background: var(--bg-tertiary);
  padding: 6px 12px;
  border-radius: 6px;
}

.btn-leave {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  color: white;
  background: var(--accent-red);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-leave:hover {
  background: #e01640;
}

/* ==================== CONTEÚDO PRINCIPAL ==================== */
.meeting-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--spacing);
  gap: var(--spacing);
  overflow-y: auto;
  min-height: 0;
}

/* ==================== GRID DE VÍDEO ==================== */
.video-grid {
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing);
  min-height: 0;
}

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

/* ==================== TILES DE VÍDEO ==================== */
.video-tile {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  max-height: min(52vh, 460px);
}

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

.video-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 10;
}

.participant-name {
  font-size: 14px;
  font-weight: 500;
  color: white;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

/* ==================== INDICADOR DE ÁUDIO ==================== */
.audio-indicator {
  display: flex;
  gap: 3px;
  align-items: flex-end;
  height: 20px;
}

.audio-bar {
  width: 4px;
  background: var(--accent-green);
  border-radius: 2px;
  transition: height 0.1s ease;
}

.audio-bar:nth-child(1) { height: 6px; }
.audio-bar:nth-child(2) { height: 12px; }
.audio-bar:nth-child(3) { height: 8px; }

.audio-indicator.active .audio-bar {
  animation: audioWave 0.5s ease-in-out infinite alternate;
}

.audio-indicator.active .audio-bar:nth-child(1) { animation-delay: 0s; }
.audio-indicator.active .audio-bar:nth-child(2) { animation-delay: 0.1s; }
.audio-indicator.active .audio-bar:nth-child(3) { animation-delay: 0.2s; }

@keyframes audioWave {
  0% { height: 4px; }
  100% { height: 18px; }
}

.audio-indicator.muted .audio-bar {
  background: var(--accent-red);
  animation: none;
  height: 4px;
}

/* ==================== PLACEHOLDER DE CÂMERA ==================== */
.video-off-placeholder {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  z-index: 5;
}

.video-off-placeholder span {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.5;
}

.video-off-placeholder.visible {
  display: flex;
}

/* ==================== ÁREA DO VLIBRAS ==================== */
/* ==================== PAINEL DE LEGENDAS ==================== */
.captions-panel {
  background: #090a0fcc;
  backdrop-filter: blur(6px);
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 255, 255, 0.16);
  overflow: hidden;
  max-height: 230px;
  min-height: 170px;
  display: flex;
  flex-direction: column;
}

.captions-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.captions-actions {
  display: flex;
  gap: 8px;
}

.btn-icon-small {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 14px;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background 0.2s;
}

.btn-icon-small:hover {
  background: var(--bg-hover);
}

.captions-content {
  padding: 12px 16px 14px;
  flex: 1;
  overflow-y: auto;
}

.caption-lines {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.caption-text {
  font-size: 20px;
  line-height: 1.45;
  color: #ffffff;
  font-weight: 600;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.65);
}

.caption-text.caption-line {
  background: rgba(0, 0, 0, 0.72);
  border-left: 3px solid var(--accent-yellow);
  border-radius: 6px;
  padding: 8px 10px;
}

.caption-text.caption-placeholder {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
}

.caption-interim {
  font-size: 18px;
  color: #9dc4ff;
  font-style: normal;
  margin-top: 8px;
  opacity: 1;
}

/* ==================== BARRA DE CONTROLES ==================== */
.meeting-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  position: sticky;
  bottom: 0;
  z-index: 15;
}

.control-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.control-btn {
  position: relative;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: none;
  background: var(--bg-tertiary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.control-btn:hover {
  background: var(--bg-hover);
  transform: scale(1.05);
}

.control-icon {
  font-size: 22px;
}

.control-off-x {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 700;
  color: #ffffff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.55);
  pointer-events: none;
}

.control-label {
  font-size: 11px;
  color: var(--text-muted);
}

/* Estados dos botões */
.control-btn.mic-on {
  background: var(--bg-tertiary);
}

.control-btn.mic-off {
  background: var(--accent-red);
}

.control-btn.mic-off .control-off-x {
  display: flex;
}

.control-btn.camera-on {
  background: var(--bg-tertiary);
}

.control-btn.camera-off {
  background: var(--accent-red);
}

.control-btn.camera-off .control-off-x {
  display: flex;
}

.control-btn.active {
  background: var(--accent-blue);
}

.control-btn.transcribing {
  background: var(--accent-green);
  animation: pulseGlow 1.5s infinite;
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 200, 83, 0.4); }
  50% { box-shadow: 0 0 0 10px rgba(0, 200, 83, 0); }
}

/* Status Display */
.status-display {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 24px;
  padding-left: 24px;
  border-left: 1px solid var(--border-color);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
}

.status-dot.listening {
  background: var(--accent-green);
  animation: blink 1s infinite;
}

.status-dot.error {
  background: var(--accent-red);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.status-text {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ==================== VLIBRAS WIDGET ==================== */
/* O VLibras renderiza como widget flutuante sobre a página */

/* ==================== HIDDEN HELPER ==================== */
.hidden {
  display: none !important;
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: 3px;
}

/* ==================== RESPONSIVIDADE ==================== */
@media (max-width: 600px) {
  .meeting-header {
    padding: 10px 16px;
  }
  
  .meeting-info h1 {
    font-size: 14px;
  }
  
  .meeting-controls {
    gap: 8px;
    padding: 10px 10px calc(10px + env(safe-area-inset-bottom));
    justify-content: space-between;
  }

  .control-group {
    flex: 1 1 22%;
  }
  
  .control-btn {
    width: 44px;
    height: 44px;
  }
  
  .control-icon {
    font-size: 18px;
  }
  
  .control-label {
    display: none;
  }
  
  .status-display {
    display: none;
  }
  
  .captions-panel {
    max-height: 180px;
    min-height: 140px;
  }

  .caption-text {
    font-size: 16px;
  }

  .caption-interim {
    font-size: 15px;
  }
  
  .video-tile {
    min-height: 190px;
    max-height: 42vh;
  }
}