/* Components CSS - Buttons, Inputs, Panels */

/* ========== Voice Button ========== */
.voice-btn-container {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  margin-right: 8px;
}

/* Holographic rotating ring */
.holo-ring {
  position: absolute;
  --ring-size: calc(var(--voice-size, min(280px, 60vw)) + 40px);
  width: var(--ring-size);
  height: var(--ring-size);
  border-radius: 50%;
  background: var(--holo-ring);
  opacity: 0.5;
  animation: holo-spin 8s linear infinite;
  pointer-events: none;
  filter: blur(8px);
  transition: opacity 0.4s ease, background 0.4s ease;
}

/* Slightly brighter on hover */
.voice-btn-container:hover .holo-ring {
  opacity: 0.7;
}

/* Recording state - red ring */
.voice-btn-container:has(.state-recording) .holo-ring {
  background: var(--holo-ring-danger);
  opacity: 0.8;
}

/* Restart required state - red ring */
.voice-btn-container:has(.state-restart) .holo-ring {
  background: var(--holo-ring-danger);
  opacity: 0.8;
}

/* Waiting state - purple ring */
.voice-btn-container:has(.state-waiting) .holo-ring {
  background: var(--holo-ring-processing);
  opacity: 0.7;
}

/* Playing state - green ring */
.voice-btn-container:has(.state-playing) .holo-ring {
  background: var(--holo-ring-success);
  opacity: 0.8;
}

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

/* Pulse ring animation */
.pulse-ring {
  position: absolute;
  --ring-size: var(--voice-size, min(280px, 60vw));
  width: var(--ring-size);
  height: var(--ring-size);
  border-radius: 50%;
  border: 2px solid var(--accent-primary);
  opacity: 0;
  pointer-events: none;
}

/* Recording state pulse - red */
.state-recording .pulse-ring {
  border-color: var(--danger);
  animation: pulse-expand 1.5s ease-out infinite;
}

/* Waiting state pulse - purple */
.state-waiting .pulse-ring {
  border-color: var(--processing);
  animation: pulse-expand 1.5s ease-out infinite;
}

/* Playing state pulse - green */
.state-playing .pulse-ring {
  border-color: var(--success);
  animation: pulse-expand 1.5s ease-out infinite;
}

@keyframes pulse-expand {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }
  100% {
    transform: scale(1.3);
    opacity: 0;
  }
}

/* Main voice button */
.talk {
  --voice-size: min(280px, 60vw);
  width: var(--voice-size);
  height: var(--voice-size);
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--btn-bg);
  box-shadow: var(--btn-shadow);
  cursor: default;
  pointer-events: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px;
  transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
  outline: none;
  flex-shrink: 0;
  backdrop-filter: blur(10px);
  z-index: 1;
  margin-left: 125px;
  margin-bottom: 16px;
}

/* Hidden by default, shown only by Her theme */
.samantha-infinity {
  display: none;
}

/* Hidden by default, shown only by HAL-9000 theme */
.hal-eye {
  display: none;
}

/* Hidden by default, shown only by HAL-9000 theme */
.hal-nameplate {
  display: none;
}

.talk:hover {
  border-color: var(--glass-border);
  transform: none;
}

.talk:active {
  transform: none;
  box-shadow: var(--btn-shadow);
}

.talk:focus-visible {
  border-color: var(--accent-primary);
  box-shadow: var(--btn-shadow), 0 0 0 3px var(--accent-subtle);
}

/* Voice button icon */
.talk .icon {
  width: clamp(40px, 10vw, 52px);
  height: clamp(40px, 10vw, 52px);
  color: var(--text-secondary);
  display: grid;
  place-items: center;
  transition: color 0.2s ease, transform 0.2s ease;
}

.talk:hover .icon {
  color: var(--text-secondary);
  transform: none;
}

/* Voice button labels */
.talk .label {
  font-size: clamp(16px, 3.5vw, 20px);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-align: center;
  color: var(--text-primary);
  width: 100%;
}

.talk .sub {
  font-size: clamp(11px, 2.4vw, 13px);
  color: var(--text-muted);
  text-align: center;
  min-height: 16px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.5px;
  width: 100%;
}

/* Voice button states */
/* Icon visibility - show mic by default, reload only for restart state */
.talk .icon-reload {
  display: none;
}

.state-restart .icon-mic {
  display: none;
}

.state-restart .icon-reload {
  display: block;
}

/* Restart required state - red with reload icon */
.state-restart {
  border-color: var(--danger) !important;
  box-shadow: var(--btn-shadow-inset), 0 0 30px var(--danger-glow);
}

.state-restart .icon {
  color: var(--danger) !important;
}

.state-restart .pulse-ring {
  border-color: var(--danger);
  animation: pulse-expand 1.5s ease-out infinite;
}

.state-recording {
  border-color: var(--danger) !important;
  box-shadow: var(--btn-shadow-inset), 0 0 30px var(--danger-glow);
}

.state-recording .icon {
  color: var(--danger) !important;
  animation: icon-pulse 1s ease-in-out infinite;
}

@keyframes icon-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.state-waiting {
  border-color: var(--processing) !important;
  box-shadow: var(--btn-shadow), 0 0 30px var(--processing-glow);
}

.state-waiting .icon {
  color: var(--processing) !important;
  animation: icon-pulse 1s ease-in-out infinite;
}

.state-playing {
  border-color: var(--success) !important;
  box-shadow: var(--btn-shadow), 0 0 30px var(--success-glow);
}

.state-playing .icon {
  color: var(--success) !important;
}

/* Wave animation for playing state */
.wave {
  height: 36px;
  display: none;
  align-items: flex-end;
  justify-content: center;
  gap: 6px;
}

.wave span {
  width: 6px;
  height: 10px;
  border-radius: 3px;
  background: var(--success);
  animation: wave-bar 0.9s ease-in-out infinite;
  transform-origin: 50% 100%;
}

.wave span:nth-child(1) { animation-delay: 0s; }
.wave span:nth-child(2) { animation-delay: 0.1s; }
.wave span:nth-child(3) { animation-delay: 0.2s; }
.wave span:nth-child(4) { animation-delay: 0.3s; }
.wave span:nth-child(5) { animation-delay: 0.4s; }

@keyframes wave-bar {
  0%, 100% { transform: scaleY(0.4); opacity: 0.6; }
  50% { transform: scaleY(1.4); opacity: 1; }
}

.state-playing .wave { display: flex; }
.state-playing .icon { display: none; }

/* Stutter indicator — freezes & dims wave bars during buffer underruns */
.state-playing.stutter .wave span {
  animation-play-state: paused;
  opacity: 0.35;
}

/* ========== Action Buttons ========== */
.action-btn {
  width: 48px;
  height: 48px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--btn-bg);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.15s ease;
  outline: none;
  flex-shrink: 0;
  backdrop-filter: blur(8px);
  margin-top: -10px;
}

.action-btn:hover {
  border-color: var(--accent-subtle);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard);
}

.action-btn:active {
  transform: translateY(0);
  box-shadow: var(--btn-shadow-inset);
}

.action-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.action-btn svg {
  width: 22px;
  height: 22px;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

.action-btn:hover svg {
  color: var(--accent-primary);
}

.action-btn.send-btn svg {
  color: var(--accent-primary);
}

.action-btn.send-btn:not(:disabled):hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.action-btn.send-btn:not(:disabled):hover svg {
  color: var(--accent-secondary);
}

/* ========== Text Input Section ========== */
.input-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.input-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.text-input-wrapper {
  flex: 1;
  position: relative;
  height: 58px;
}

.text-input {
  width: 100%;
  min-height: 48px;
  max-height: 120px;
  padding: 14px 18px;
  border: 1px solid var(--input-border);
  border-radius: 24px;
  background: var(--input-bg);
  backdrop-filter: blur(8px);
  font-family: inherit;
  font-size: 15px;
  color: var(--text-primary);
  resize: none;
  outline: none;
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.text-input::placeholder {
  color: var(--text-muted);
}

.text-input:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px var(--accent-subtle), var(--shadow-glow);
}

/* ========== Mobile Input Layout ========== */
@media (max-width: 480px) {
  .talk {
    gap: 8px;
  }

  .input-section {
    --expand-duration: 0.3s;
    --expand-easing: cubic-bezier(0.34, 1.56, 0.64, 1); /* Spring */
  }

  .input-row {
    position: relative;
    gap: 0;
  }

  /* Container expansion effect */
  .text-input-wrapper {
    flex: 1;
    position: relative;
    z-index: 1;
  }

  /* Text input - full width pill */
  .text-input {
    padding-left: 18px;
    padding-right: 18px;
    transition:
      padding var(--expand-duration) var(--expand-easing),
      border-color 0.2s ease,
      box-shadow 0.2s ease;
  }

  /* Subtle idle glow animation */
  @keyframes idle-glow {
    0%, 100% { box-shadow: 0 0 0 1px var(--input-border); }
    50% { box-shadow: 0 0 8px 1px var(--accent-subtle); }
  }

  .text-input:not(:focus) {
    animation: idle-glow 4s ease-in-out infinite;
  }

  /* Image button - slides in from left */
  .input-row > .action-btn:first-child {
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%) scale(0.8);
    width: 36px;
    height: 36px;
    opacity: 0;
    pointer-events: none;
    z-index: 2;
    transition:
      opacity var(--expand-duration) ease,
      transform var(--expand-duration) var(--expand-easing);
  }

  .input-row > .action-btn:first-child svg {
    width: 18px;
    height: 18px;
  }

  /* Send button - slides in from right */
  .input-row > .send-btn {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%) scale(0.8);
    width: 36px;
    height: 36px;
    opacity: 0;
    pointer-events: none;
    z-index: 2;
    transition:
      opacity var(--expand-duration) ease,
      transform var(--expand-duration) var(--expand-easing);
  }

  .input-row > .send-btn svg {
    width: 18px;
    height: 18px;
  }

  /* ===== EXPANDED STATE (focus-within) ===== */
  .input-row:focus-within .text-input,
  .input-row:has(.text-input:not(:placeholder-shown)) .text-input {
    padding-left: 48px;
    padding-right: 48px;
    animation: none;
    box-shadow: 0 0 0 2px var(--input-focus), 0 0 20px var(--accent-subtle);
  }

  .input-row:focus-within > .action-btn:first-child,
  .input-row:has(.text-input:not(:placeholder-shown)) > .action-btn:first-child {
    opacity: 1;
    transform: translateY(-50%) scale(1);
    pointer-events: auto;
  }

  .input-row:focus-within > .send-btn,
  .input-row:has(.text-input:not(:placeholder-shown)) > .send-btn {
    opacity: 1;
    transform: translateY(-50%) scale(1);
    pointer-events: auto;
  }

  /* Send button glow when enabled */
  .input-row > .send-btn:not(:disabled) {
    box-shadow: 0 0 12px var(--accent-glow);
  }

  /* Hover states for mobile buttons */
  .input-row > .action-btn:first-child:active,
  .input-row > .send-btn:active {
    transform: translateY(-50%) scale(0.9);
  }
}

/* ========== Image Preview ========== */
.image-preview {
  display: none;
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-soft);
}

.image-preview.has-image {
  display: block;
}

.image-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.image-preview .remove-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.15s ease;
  backdrop-filter: blur(4px);
}

.image-preview .remove-btn:hover {
  background: var(--danger);
}

.image-preview .remove-btn svg {
  width: 12px;
  height: 12px;
}

/* ========== Settings Button (Top Left) ========== */
.settings-btn {
  position: fixed;
  top: 20px;
  left: 20px;
  width: 48px;
  height: 48px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.2s ease;
  outline: none;
  z-index: 100;
}

.settings-btn:hover {
  border-color: var(--accent-subtle);
  box-shadow: var(--shadow-glow);
}

.settings-btn:active {
  transform: scale(0.95);
}

.settings-btn svg {
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  transition: transform 0.3s ease, color 0.2s ease;
}

.settings-btn:hover svg {
  transform: rotate(60deg);
  color: var(--accent-primary);
}

/* ========== Mute Mic Button ========== */
.mute-btn {
  width: 48px;
  height: 48px;
  margin-top: 16px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.2s ease;
  outline: none;
}

.mute-btn:hover {
  border-color: var(--accent-subtle);
  box-shadow: var(--shadow-glow);
}

.mute-btn:active {
  transform: scale(0.95);
}

.mute-btn svg {
  width: 22px;
  height: 22px;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.mute-btn:hover svg {
  color: var(--accent-primary);
}

/* Show mic-on icon by default, hide mic-off */
.mute-btn .icon-mic-off {
  display: none;
}

/* When muted: show mic-off, hide mic-on, danger styling */
.mute-btn.muted .icon-mic-on {
  display: none;
}

.mute-btn.muted .icon-mic-off {
  display: block;
}

.mute-btn.muted {
  border-color: var(--danger);
  background: var(--danger-glow);
}

.mute-btn.muted svg {
  color: var(--danger);
}

/* ========== Theme Toggle Button ========== */
/* Mic level meter (debug indicator) */
.mic-level-meter {
  width: 120px;
  height: 6px;
  background: var(--bg-glass);
  border: 1px solid var(--glass-border);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 8px;
  opacity: 0;
  transition: opacity 0.3s;
  transform: rotate(-90deg);
  margin-bottom: 55px;
  margin-left: -45px;
}

.mic-level-meter.active {
  opacity: 1;
}

.mic-level-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.05s linear, background-color 0.15s;
}

.mic-level-bar.hot {
  background: #e74c3c;
}

.logout-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.2s ease;
  outline: none;
  z-index: 100;
}

.logout-btn.hidden {
  display: none;
}

.logout-btn:hover {
  border-color: var(--accent-subtle);
  box-shadow: var(--shadow-glow);
}

.logout-btn:active {
  transform: scale(0.95);
}

.logout-btn svg {
  width: 22px;
  height: 22px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.logout-btn:hover svg {
  color: var(--text-primary);
}

.theme-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.2s ease;
  outline: none;
  z-index: 100;


  display: none;
}

.theme-btn:hover {
  border-color: var(--accent-subtle);
  box-shadow: var(--shadow-glow);
}

.theme-btn:active {
  transform: scale(0.95);
}

.theme-btn svg {
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  transition: transform 0.3s ease, color 0.2s ease;
}

.theme-btn:hover svg {
  color: var(--accent-primary);
}

/* Sun/Moon/Infinity/HAL icon visibility */
.theme-btn .icon-sun,
.theme-btn .icon-moon,
.theme-btn .icon-infinity,
.theme-btn .icon-hal {
  position: absolute;
  transition: opacity 0.2s ease, transform 0.3s ease;
}

[data-theme="dark"] .theme-btn .icon-sun {
  opacity: 1;
  transform: rotate(0deg);
}

[data-theme="dark"] .theme-btn .icon-moon,
[data-theme="dark"] .theme-btn .icon-infinity,
[data-theme="dark"] .theme-btn .icon-hal {
  opacity: 0;
  transform: rotate(-90deg);
}

[data-theme="light"] .theme-btn .icon-sun,
[data-theme="light"] .theme-btn .icon-infinity,
[data-theme="light"] .theme-btn .icon-hal {
  opacity: 0;
  transform: rotate(90deg);
}

[data-theme="light"] .theme-btn .icon-moon {
  opacity: 1;
  transform: rotate(0deg);
}

[data-theme="her"] .theme-btn .icon-sun,
[data-theme="her"] .theme-btn .icon-moon,
[data-theme="her"] .theme-btn .icon-hal {
  opacity: 0;
  transform: rotate(90deg);
}

[data-theme="her"] .theme-btn .icon-infinity {
  opacity: 1;
  transform: rotate(0deg);
}

[data-theme="hal-9000"] .theme-btn .icon-sun,
[data-theme="hal-9000"] .theme-btn .icon-moon,
[data-theme="hal-9000"] .theme-btn .icon-infinity {
  opacity: 0;
  transform: rotate(90deg);
}

[data-theme="hal-9000"] .theme-btn .icon-hal {
  opacity: 1;
  transform: rotate(0deg);
}

/* ========== Settings Panel ========== */
.settings-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  z-index: 200;
}

.settings-overlay.open {
  opacity: 1;
  visibility: visible;
}

.settings-panel {
  position: fixed;
  top: 0;
  left: 0;
  width: min(400px, 90vw);
  height: 100%;
  background: var(--bg-surface);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-hard);
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 300;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-right: 1px solid var(--glass-border);
}

.settings-overlay.open + .settings-panel,
.settings-panel.open {
  transform: translateX(0);
}

.settings-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.settings-header h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}

.close-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.15s ease;
}

.close-btn:hover {
  background: var(--accent-subtle);
  border-color: var(--accent-primary);
}

.close-btn svg {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
}

.close-btn:hover svg {
  color: var(--accent-primary);
}

.settings-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}

.setting-group {
  margin-bottom: 28px;
}

.setting-group-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-primary);
  margin-bottom: 16px;
  font-family: 'JetBrains Mono', monospace;
}

.setting-row {
  margin-bottom: 18px;
}

.setting-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.setting-select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--input-border);
  border-radius: 12px;
  background: var(--input-bg);
  font-family: inherit;
  font-size: 14px;
  color: var(--text-primary);
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 44px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.setting-select:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

.setting-select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.setting-select option:disabled {
  color: var(--text-muted);
  font-style: italic;
}

.setting-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
  font-family: 'JetBrains Mono', monospace;
}

.setting-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--input-border);
  outline: none;
  cursor: pointer;
  margin: 4px 0;
}

.setting-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.setting-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.setting-textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--input-border);
  border-radius: 12px;
  background: var(--input-bg);
  font-family: inherit;
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.setting-textarea:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

/* Toggle switch */
.setting-toggle {
  display: flex;
  flex-direction: row-reverse;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  width: 100%;
}

.setting-toggle input {
  display: none;
}

.toggle-track {
  width: 48px;
  height: 26px;
  border-radius: 13px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  position: relative;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text-secondary);
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s ease, background 0.2s ease;
}

.setting-toggle input:checked + .toggle-track {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.setting-toggle input:checked + .toggle-track .toggle-thumb {
  transform: translateX(22px);
  background: white;
}

.toggle-label {
  font-size: 13px;
  color: var(--text-primary);
  user-select: none;
}

/* Settings footer */
.settings-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  gap: 12px;
}

/* Buttons */
.btn {
  flex: 1;
  padding: 14px 20px;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  outline: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

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

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: var(--accent-subtle);
  border-color: var(--accent-primary);
}

.btn-secondary:active {
  transform: scale(0.98);
}

/* Restart notice */
.restart-notice {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--danger-glow);
  border: 1px solid var(--danger);
  border-radius: 10px;
  font-size: 12px;
  color: var(--danger);
  margin-bottom: 18px;
}

.restart-notice.show {
  display: flex;
}

.restart-notice svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Loading spinner */
.loading-spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.btn-primary.loading .loading-spinner {
  display: block;
}

.btn-primary.loading span {
  display: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== Theme Toggle in Settings ========== */
.theme-toggle-group {
  display: flex;
  gap: 8px;
}

.theme-toggle-btn {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: var(--bg-glass);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.theme-toggle-btn:hover {
  border-color: var(--accent-subtle);
}

.theme-toggle-btn.active {
  background: var(--accent-subtle);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.theme-toggle-btn svg {
  width: 16px;
  height: 16px;
}

/* ========== Toast Notifications ========== */

#notifications {
  position: fixed;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: var(--bg-secondary, #111827);
  color: var(--text-primary, #f1f5f9);
  border: 1px solid var(--glass-border, rgba(255,255,255,0.08));
  border-radius: 0.75rem;
  padding: 0.75rem 2.25rem 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  animation: fade-in 0.2s ease;
  min-width: 200px;
  max-width: 320px;
  position: relative;
  cursor: pointer;
}

.toast-close {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: none;
  border: none;
  color: var(--text-secondary, #94a3b8);
  font-size: 14px;
  cursor: pointer;
  line-height: 1;
  padding: 0;
}

.toast-close:hover {
  color: var(--text-primary, #f1f5f9);
}

.toast strong {
  font-size: 13px;
  font-weight: 600;
}

.toast span {
  font-size: 12px;
  color: var(--text-secondary, #94a3b8);
}

.toast.fade-out {
  animation: toast-fade-out 0.3s ease forwards;
}

@keyframes toast-fade-out {
  to {
    opacity: 0;
    transform: translateY(-0.5rem);
  }
}

.appearance-settings {
  display: none;
}

/* --- Topic indicator --- */
.topic-indicator {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  text-align: center;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
  z-index: 10;
  max-width: 90vw;
}

.topic-indicator.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.topic-indicator .topic-title {
  font-size: 0.8rem;
  color: var(--text-secondary, rgba(255,255,255,0.55));
  line-height: 1.3;
  margin-bottom: 0.2rem;
}

.topic-indicator .topic-keywords {
  font-size: 0.7rem;
  color: var(--text-tertiary, rgba(255,255,255,0.35));
  letter-spacing: 0.04em;
}

.topic-indicator.topic-changed .topic-title {
  color: var(--accent, #6C8EEF);
  transition: color 0.3s ease;
}

/* ========== Warmup Overlay ========== */
.warmup-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: grid;
  place-items: center;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(0, 0, 0, 0.5);
  transition: opacity 0.4s ease;
}

.warmup-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.warmup-modal {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 32px 48px;
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
}

.warmup-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: warmup-spin 0.8s linear infinite;
}

@keyframes warmup-spin {
  to { transform: rotate(360deg); }
}

.warmup-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  text-align: center;
  letter-spacing: 0.02em;
}

#warmupSpinnerPhase {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

#warmupSpinnerPhase.hidden,
#warmupButtonPhase.hidden {
  display: none;
}

.warmup-start-btn {
  padding: 12px 32px;
  border: 1px solid var(--accent-primary);
  border-radius: 12px;
  background: var(--accent-primary);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.1s ease;
  letter-spacing: 0.02em;
}

.warmup-start-btn:hover {
  opacity: 0.9;
}

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

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


.image-upload {
  display: none; /* Hidden by default, shown only on mobile when input is focused */
}

#sendBtn {
  border-color: var(--accent-primary);
}

/* ========== Login Overlay ========== */
.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary, #0a0e1a);
  transition: opacity 0.4s ease;
}

.login-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.login-modal {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2.5rem 2rem;
  border-radius: 1rem;
  background: var(--bg-secondary, #121828);
  border: 1px solid var(--border-color, rgba(255,255,255,0.08));
  min-width: 300px;
  max-width: 360px;
  width: 90vw;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.login-icon {
  color: var(--accent-primary, #00d4ff);
  opacity: 0.8;
}

.login-title {
  font-family: var(--font-primary, 'Montserrat', sans-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary, #fff);
  margin: 0;
}

.login-field {
  width: 100%;
}

.login-field input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color, rgba(255,255,255,0.12));
  background: var(--bg-primary, #0a0e1a);
  color: var(--text-primary, #fff);
  font-size: 0.95rem;
  font-family: var(--font-primary, 'Montserrat', sans-serif);
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
}

.login-field input:focus {
  border-color: var(--accent-primary, #00d4ff);
}

.login-field input::placeholder {
  color: var(--text-secondary, rgba(255,255,255,0.4));
}

.login-error {
  color: #ff4444;
  font-size: 0.85rem;
  min-height: 1.2em;
  text-align: center;
}

.login-btn {
  width: 100%;
  padding: 0.75rem;
  border-radius: 0.5rem;
  border: none;
  background: var(--accent-primary, #00d4ff);
  color: #000;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-primary, 'Montserrat', sans-serif);
  cursor: pointer;
  transition: opacity 0.2s;
}

.login-btn:hover {
  opacity: 0.9;
}

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

/* ========== Transcript Sidebar (right) ========== */
.transcript-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.2s ease;
  outline: none;
  z-index: 100;
}

.transcript-btn:hover {
  border-color: var(--accent-subtle);
  box-shadow: var(--shadow-glow);
}

.transcript-btn:active {
  transform: scale(0.95);
}

.transcript-btn svg {
  width: 22px;
  height: 22px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.transcript-btn:hover svg {
  color: var(--text-primary);
}

.transcript-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  z-index: 200;
}

.transcript-overlay.open {
  opacity: 1;
  visibility: visible;
}

.transcript-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(420px, 90vw);
  height: 100%;
  background: var(--bg-surface);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-hard);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 300;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-left: 1px solid var(--glass-border);
}

.transcript-overlay.open ~ .transcript-panel,
.transcript-panel.open {
  transform: translateX(0);
}

.transcript-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.transcript-header h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}

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

.transcript-copy-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color 0.2s, background 0.2s;
}

.transcript-copy-btn:hover {
  border-color: var(--accent-subtle);
  background: var(--glass-bg, rgba(255, 255, 255, 0.05));
}

.transcript-copy-btn svg {
  width: 18px;
  height: 18px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.transcript-copy-btn:hover svg {
  color: var(--text-primary);
}

.transcript-copy-btn .icon-check {
  color: var(--accent-primary, #00d4ff);
}

.transcript-copy-btn .hidden {
  display: none;
}

.transcript-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.transcript-entry {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  border-radius: 12px;
  max-width: 85%;
  animation: transcript-fade-in 0.2s ease;
}

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

.transcript-user {
  background: var(--glass-bg, rgba(255, 255, 255, 0.05));
  border: 1px solid var(--glass-border);
  align-self: flex-end;
}

.transcript-bot {
  background: var(--accent-primary-subtle, rgba(0, 212, 255, 0.08));
  border: 1px solid var(--accent-primary-border, rgba(0, 212, 255, 0.15));
  align-self: flex-start;
}

.transcript-role {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-tertiary);
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
}

.transcript-text {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  word-break: break-word;
}