:root {
  /* Premium Tone Palette */
  --bg-base:        #05070c;
  --bg-surface:     #0b0e17;
  --bg-elevated:    #121726;
  --bg-glass:       rgba(18, 23, 38, 0.75);

  --accent:         #6c8ef4;
  --accent-glow:    rgba(108, 142, 244, 0.4);
  --accent-soft:    rgba(108, 142, 244, 0.12);

  --green:          #10b981;
  --green-glow:     rgba(16, 185, 129, 0.25);
  --amber:          #f59e0b;
  --red:            #ef4444;
  --red-glow:       rgba(239, 68, 68, 0.25);

  --text-primary:   #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted:     #4b5563;

  --border:         rgba(108, 142, 244, 0.15);
  --border-subtle:  rgba(255, 255, 255, 0.04);

  /* Typography */
  --font-ui:        'Outfit', 'Inter', system-ui, sans-serif;
  --font-mono:      'JetBrains Mono', 'Fira Code', monospace;

  /* Border Radius Scale */
  --radius-sm:      8px;
  --radius-md:      14px;
  --radius-lg:      22px;
  --radius-full:    9999px;

  /* Transitions */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 280ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  height: 100%;
  font-size: 16px;
}

body {
  min-height: 100%;
  background: var(--bg-base);
  background-image: radial-gradient(circle at 50% 15%, #0f162e 0%, var(--bg-base) 75%);
  color: var(--text-primary);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── App Layout ─────────────────────────────────────────────────────────────── */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 20px 40px;
}

/* ── Header ─────────────────────────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 16px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 0 16px var(--accent-glow);
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.4px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Connection status badge */
.connection-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  backdrop-filter: blur(8px);
  transition: all var(--transition-normal);
}

.connection-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: all var(--transition-normal);
}

.connection-badge.connected .connection-dot {
  background: var(--green);
  box-shadow: 0 0 8px var(--green-glow);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

.connection-badge.connecting .connection-dot {
  background: var(--amber);
  animation: pulse-dot 1s ease-in-out infinite;
}

.connection-badge.error .connection-dot {
  background: var(--red);
  box-shadow: 0 0 8px var(--red-glow);
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* ── Character Banner ────────────────────────────────────────────────────────── */
.character-display {
  text-align: center;
  margin-top: 10px;
  margin-bottom: 20px;
}

.character-display h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 4px;
}

.character-display p {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── Central Animated Voice Orb Visualizer ────────────────────────────────────── */
.visualizer-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 10px 0 20px;
  min-height: 250px;
}

#orb-canvas {
  filter: drop-shadow(0 0 35px var(--accent-glow));
}

.status-overlay {
  position: absolute;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.status-value {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: rgba(5, 7, 12, 0.4);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  backdrop-filter: blur(4px);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.status-value.listening { color: var(--green); text-shadow: 0 0 10px var(--green-glow); }
.status-value.thinking  { color: var(--accent); text-shadow: 0 0 10px var(--accent-glow); }
.status-value.speaking  { color: var(--amber); }
.status-value.error     { color: var(--red); }

/* ── Live Transcripts Overlay ─────────────────────────────────────────────────── */
.live-transcript-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 140px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 24px;
  backdrop-filter: blur(12px);
  /* Fade out text at the top */
  mask-image: linear-gradient(to bottom, transparent 0%, black 15%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 15%);
}

.live-transcript-interim {
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
  font-style: italic;
  min-height: 22px;
  transition: opacity var(--transition-fast);
}

.live-transcript-scroll {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scrollbar-width: none; /* Hide scrollbar for clean UI */
}
.live-transcript-scroll::-webkit-scrollbar {
  display: none;
}

.msg {
  display: flex;
  flex-direction: column;
  animation: fade-in-up var(--transition-normal);
}

.msg-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.msg-bubble {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  max-width: 90%;
}

.msg-user .msg-bubble {
  color: var(--text-primary);
}

.msg-assistant .msg-bubble {
  color: #fff;
  font-weight: 500;
}

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Central Mic Button ───────────────────────────────────────────────────────── */
.action-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.mic-btn {
  width: 76px;
  height: 76px;
  border-radius: var(--radius-full);
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  color: var(--text-primary);
  font-size: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  outline: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  transition: all var(--transition-normal);
}

.mic-btn:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 0 20px var(--accent-glow);
}

.mic-btn.active {
  background: var(--green);
  border-color: var(--green);
  box-shadow: 0 0 24px var(--green-glow);
  transform: scale(1.05);
}

.mic-btn.speaking {
  background: var(--amber);
  border-color: var(--amber);
  animation: pulse-speaking 2s infinite;
}

@keyframes pulse-speaking {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.mic-hint {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ── Segmented Control Pills ──────────────────────────────────────────────────── */
.selectors-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.selector-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.selector-group label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  padding-left: 4px;
}

.segmented-control {
  display: flex;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 4px;
  gap: 4px;
}

.seg-btn {
  flex: 1;
  background: none;
  border: none;
  padding: 10px 0;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: calc(var(--radius-md) - 2px);
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
}

.seg-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.seg-btn.active {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 4px 12px rgba(108, 142, 244, 0.25);
}

/* ── Settings Dropdown ───────────────────────────────────────────────────────── */
.settings-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.settings-header {
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  outline: none;
  user-select: none;
}
.settings-header:hover {
  color: var(--text-primary);
}

.settings-body {
  padding: 0 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-top: 1px solid var(--border-subtle);
  margin-top: 4px;
  padding-top: 14px;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.setting-row label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.setting-row select {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 13px;
  outline: none;
  cursor: pointer;
  min-width: 140px;
}

/* Toggle Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  transition: .3s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-secondary);
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--accent);
  border-color: var(--accent);
}

input:checked + .slider:before {
  transform: translateX(20px);
  background-color: white;
}

/* ── Control Action Bar ──────────────────────────────────────────────────────── */
.controls {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.ctrl-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 0;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
}

.ctrl-btn:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border);
}

.ctrl-btn.danger:hover {
  background: rgba(239, 68, 68, 0.12);
  color: var(--red);
  border-color: var(--red);
}

/* ── Latency Metrics Board ───────────────────────────────────────────────────── */
.latency-bar {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 24px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  text-align: center;
}

.metric-item {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.metric-item span {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

/* ── Provider Strip ──────────────────────────────────────────────────────────── */
.provider-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.provider-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

.provider-chip-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-muted);
}

/* ── Admin Login Modal & Actions ────────────────────────────────────────────── */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-toggle-btn {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
}

.admin-toggle-btn:hover {
  background: var(--accent-soft);
  color: var(--text-primary);
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

.admin-toggle-btn.authenticated {
  background: rgba(245, 158, 11, 0.15);
  border-color: var(--amber);
  color: var(--amber);
}

.admin-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(4, 5, 8, 0.85);
  backdrop-filter: blur(12px);
  transition: opacity 0.3s ease;
}

.admin-modal-content {
  position: relative;
  width: 90%;
  max-width: 400px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px var(--accent-glow);
  text-align: center;
}

.admin-modal-content h2 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.admin-modal-content p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.5;
}

.admin-modal-content input {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 14px;
  text-align: center;
  outline: none;
  margin-bottom: 20px;
  transition: border-color var(--transition-fast);
}

.admin-modal-content input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

.admin-submit-btn {
  width: 100%;
  background: var(--accent);
  border: none;
  color: #fff;
  padding: 12px 0;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.admin-submit-btn:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 15px var(--accent-glow);
}

.admin-close-btn {
  position: absolute;
  top: 12px;
  right: 18px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  outline: none;
}

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

.admin-error {
  margin-top: 16px;
  font-size: 12px;
  color: var(--red);
  font-weight: 500;
}

.hidden {
  display: none !important;
}