/* ============================================
   Custom Voice Agent - Styles
   Dark theme with smooth animations
   ============================================ */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #1e1e35;
  --border: #2a2a40;
  --text-primary: #e8e8f0;
  --text-secondary: #8888a0;
  --text-muted: #555570;
  --accent: #6c63ff;
  --accent-glow: rgba(108, 99, 255, 0.3);
  --accent-hover: #7b73ff;
  --success: #4ade80;
  --warning: #fbbf24;
  --error: #f87171;
  --user-color: #38bdf8;
  --agent-color: #a78bfa;
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---- Layout ---- */

.app-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 32px 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ---- Header ---- */

.header { text-align: center; padding-bottom: 8px; }

.header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--agent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.header .subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.header .subtitle-providers {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ---- Provider Selectors ---- */

.provider-selectors {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.selector-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.selector-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.selector-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.selector-btn {
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.selector-btn:hover:not(:disabled) {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  color: var(--text-primary);
}

.selector-btn.active {
  background: rgba(108, 99, 255, 0.15);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.selector-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.language-options,
.voice-options {
  max-height: 120px;
  overflow-y: auto;
  padding-right: 4px;
}
.language-options::-webkit-scrollbar,
.voice-options::-webkit-scrollbar { width: 4px; }
.language-options::-webkit-scrollbar-track,
.voice-options::-webkit-scrollbar-track { background: transparent; }
.language-options::-webkit-scrollbar-thumb,
.voice-options::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.selector-divider {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

/* ---- Status Bar ---- */

.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
}

.status-left { display: flex; align-items: center; gap: 10px; }

.status-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background 0.3s;
}
.status-dot.connected { background: var(--success); box-shadow: 0 0 8px rgba(74, 222, 128, 0.5); }
.status-dot.connecting { background: var(--warning); animation: pulse 1s ease-in-out infinite; }
.status-dot.error { background: var(--error); }
.status-dot.disconnected { background: var(--text-muted); }

.status-text { font-size: 0.875rem; color: var(--text-secondary); }

.status-right { display: flex; align-items: center; gap: 16px; }
.latency-label { font-size: 0.75rem; color: var(--text-muted); }
#latency { font-size: 0.875rem; font-weight: 600; color: var(--success); font-variant-numeric: tabular-nums; }

.active-config {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 3px 8px;
  background: var(--bg-secondary);
  border-radius: 4px;
  white-space: nowrap;
}
.active-config:empty { display: none; }

/* ---- Visualizer ---- */

.visualizer-container { display: flex; justify-content: center; padding: 20px 0; }

.visualizer {
  width: 120px; height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, var(--accent), #3a35a0);
  box-shadow: 0 0 40px var(--accent-glow);
  transition: all 0.4s ease;
  position: relative;
}
.visualizer::after {
  content: ""; position: absolute; inset: -4px;
  border-radius: 50%;
  border: 2px solid transparent;
  transition: border-color 0.3s;
}
.visualizer.listening { box-shadow: 0 0 60px var(--accent-glow); animation: breathe 3s ease-in-out infinite; }
.visualizer.user-speaking { box-shadow: 0 0 80px rgba(56, 189, 248, 0.4); background: radial-gradient(circle at 40% 40%, var(--user-color), #1e6fa0); animation: speak-pulse 0.3s ease-in-out infinite alternate; }
.visualizer.thinking { animation: think-spin 2s linear infinite; box-shadow: 0 0 50px rgba(251, 191, 36, 0.3); background: radial-gradient(circle at 40% 40%, var(--warning), #a07520); }
.visualizer.speaking { animation: speak-pulse 0.4s ease-in-out infinite alternate; box-shadow: 0 0 80px rgba(167, 139, 250, 0.4); background: radial-gradient(circle at 40% 40%, var(--agent-color), #6040c0); }

/* ---- Controls ---- */

.controls { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.controls-hint { font-size: 0.8rem; color: var(--text-muted); margin: 0; }

.connect-btn {
  padding: 14px 40px;
  font-size: 1rem; font-weight: 600;
  font-family: inherit;
  border: none; border-radius: 50px;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), #5548d9);
  color: white;
  transition: all 0.3s ease;
}
.connect-btn:hover:not(:disabled) { background: linear-gradient(135deg, var(--accent-hover), #6860e0); transform: translateY(-1px); box-shadow: 0 4px 20px var(--accent-glow); }
.connect-btn:active:not(:disabled) { transform: translateY(0); }
.connect-btn:disabled { opacity: 0.6; cursor: not-allowed; }
.connect-btn.active { background: linear-gradient(135deg, var(--error), #d04040); }
.connect-btn.active:hover:not(:disabled) { background: linear-gradient(135deg, #ff8080, #e04040); }
.connect-btn-retry { margin-top: 12px; }

/* ---- Mic permission banner ---- */

.mic-permission-banner { background: rgba(251, 191, 36, 0.08); border: 1px solid rgba(251, 191, 36, 0.35); border-radius: var(--radius); padding: 20px; }
.mic-permission-title { font-size: 1rem; font-weight: 600; color: var(--warning); margin-bottom: 8px; }
.mic-permission-text { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 12px; }
.mic-permission-steps { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; margin-bottom: 12px; }
.mic-permission-steps strong { color: var(--text-primary); }
.mic-permission-steps ul { margin: 8px 0 8px 20px; }
.mic-permission-steps li { margin-bottom: 6px; }

/* ---- Agent State ---- */

.agent-state-container { display: flex; justify-content: center; }
.agent-state {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 16px; border-radius: 20px;
  font-size: 0.8rem; font-weight: 500;
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-secondary); transition: all 0.3s;
}
.agent-state.state-listening { border-color: var(--accent); color: var(--accent); }
.agent-state.state-thinking { border-color: var(--warning); color: var(--warning); }
.agent-state.state-speaking { border-color: var(--agent-color); color: var(--agent-color); }

/* ---- Panels ---- */

.panel { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; }
.panel-title { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); margin-bottom: 10px; }

#transcript { font-size: 1rem; line-height: 1.6; color: var(--text-secondary); min-height: 24px; transition: color 0.3s; }
#transcript.final { color: var(--text-primary); }
#transcript.speaking { color: var(--user-color); }

#agentResponse { font-size: 1rem; line-height: 1.6; color: var(--agent-color); min-height: 24px; max-height: 150px; overflow-y: auto; }

.conversation-panel { flex: 1; min-height: 200px; max-height: 400px; display: flex; flex-direction: column; }
#conversationLog { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; max-height: 350px; padding-right: 8px; }
#conversationLog::-webkit-scrollbar { width: 4px; }
#conversationLog::-webkit-scrollbar-track { background: transparent; }
#conversationLog::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.log-entry { display: flex; gap: 10px; align-items: flex-start; animation: fadeIn 0.3s ease; }
.log-label { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; padding: 3px 8px; border-radius: 4px; flex-shrink: 0; min-width: 32px; text-align: center; }
.log-entry.user .log-label { background: rgba(56, 189, 248, 0.15); color: var(--user-color); }
.log-entry.assistant .log-label { background: rgba(167, 139, 250, 0.15); color: var(--agent-color); }
.log-text { font-size: 0.9rem; line-height: 1.5; color: var(--text-primary); padding-top: 2px; }

/* ---- Footer ---- */

.footer { text-align: center; padding: 12px 0; font-size: 0.75rem; color: var(--text-muted); }

/* ---- Animations ---- */

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
@keyframes breathe { 0%, 100% { transform: scale(1); box-shadow: 0 0 40px var(--accent-glow); } 50% { transform: scale(1.05); box-shadow: 0 0 60px var(--accent-glow); } }
@keyframes speak-pulse { from { transform: scale(1); } to { transform: scale(1.08); } }
@keyframes think-spin { 0% { box-shadow: 0 0 40px rgba(251, 191, 36, 0.2); } 50% { box-shadow: 0 0 60px rgba(251, 191, 36, 0.4); } 100% { box-shadow: 0 0 40px rgba(251, 191, 36, 0.2); } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* ---- Responsive ---- */

@media (max-width: 600px) {
  .app-container { padding: 16px 12px; }
  .header h1 { font-size: 1.4rem; }
  .visualizer { width: 90px; height: 90px; }
  .connect-btn { padding: 12px 32px; font-size: 0.9rem; }
  .status-bar { flex-direction: column; gap: 8px; }
  .provider-selectors { padding: 14px; gap: 12px; }
  .selector-btn { padding: 6px 12px; font-size: 0.8rem; }
}