/* ==========================================================================
   Narrator Panel — Personality-driven slide narration
   Frosted glass aesthetic matching the slide deck's glass-panel style.
   Positioned at bottom-left, complementing the slide-nav pill at right.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Panel container
   -------------------------------------------------------------------------- */
.narrator-panel {
  width: clamp(200px, 22vw, 320px);
  padding: 10px 14px 12px;
  border-radius: 16px;
  background: linear-gradient(
    135deg,
    rgba(20, 20, 30, 0.72) 0%,
    rgba(20, 20, 30, 0.52) 100%
  );
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.35),
    0 2px 8px rgba(0, 0, 0, 0.2),
    inset 0 1px 1px rgba(255, 255, 255, 0.25),
    inset 0 -1px 2px rgba(255, 255, 255, 0.05);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: rgba(255, 255, 255, 0.85);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: opacity 0.3s ease, transform 0.3s ease;
  /* Hidden by default — toggled via .visible */
  display: none;
}

.narrator-panel.visible {
  display: flex;
}

/* --------------------------------------------------------------------------
   Header row
   -------------------------------------------------------------------------- */
.narrator-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.narrator-title {
  font-size: clamp(0.55rem, 0.8vw, 0.75rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.45);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Voice selector
   -------------------------------------------------------------------------- */
.narrator-voice-select {
  flex: 1;
  min-width: 0;
  padding: 3px 6px;
  font-size: clamp(0.5rem, 0.7vw, 0.65rem);
  font-family: inherit;
  color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='rgba(255,255,255,0.5)' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 6px center;
  padding-right: 20px;
}

.narrator-voice-select:focus {
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.08);
}

.narrator-voice-select option {
  background: #1a1a2e;
  color: #e0e0e0;
}

/* --------------------------------------------------------------------------
   Personality chips
   -------------------------------------------------------------------------- */
.narrator-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.narrator-chip {
  padding: 3px 10px;
  font-size: clamp(0.45rem, 0.65vw, 0.6rem);
  font-family: inherit;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.narrator-chip:hover {
  color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.narrator-chip.active {
  color: #fff;
  background: color-mix(in srgb, var(--chip-accent) 25%, transparent);
  border-color: var(--chip-accent);
  box-shadow: 0 0 8px color-mix(in srgb, var(--chip-accent) 30%, transparent);
}

/* --------------------------------------------------------------------------
   Custom personality input
   -------------------------------------------------------------------------- */
.narrator-custom-input {
  width: 100%;
  padding: 5px 8px;
  font-size: clamp(0.5rem, 0.65vw, 0.6rem);
  font-family: inherit;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  outline: none;
}

.narrator-custom-input::placeholder {
  color: rgba(255, 255, 255, 0.3);
  font-style: italic;
}

.narrator-custom-input:focus {
  border-color: rgba(167, 139, 250, 0.5);
  box-shadow: 0 0 0 2px rgba(167, 139, 250, 0.15);
}

/* --------------------------------------------------------------------------
   Preview text (shown after LLM rewrite)
   -------------------------------------------------------------------------- */
.narrator-preview {
  max-height: 80px;
  overflow-y: auto;
  font-size: clamp(0.5rem, 0.65vw, 0.6rem);
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.6);
  padding: 6px 8px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

.narrator-preview::-webkit-scrollbar { width: 3px; }
.narrator-preview::-webkit-scrollbar-track { background: transparent; }
.narrator-preview::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 2px;
}

/* --------------------------------------------------------------------------
   Model loading progress
   -------------------------------------------------------------------------- */
.narrator-loading {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.narrator-loading-label {
  font-size: clamp(0.45rem, 0.6vw, 0.55rem);
  color: rgba(255, 255, 255, 0.45);
  text-align: center;
}

.narrator-loading-track {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
}

.narrator-loading-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #f472b6, #a78bfa);
  border-radius: 2px;
  transition: width 0.2s ease;
}

/* --------------------------------------------------------------------------
   Narrate button
   -------------------------------------------------------------------------- */
.narrator-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 7px 12px;
  font-size: clamp(0.6rem, 0.8vw, 0.75rem);
  font-family: inherit;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  background: linear-gradient(
    135deg,
    rgba(147, 16, 54, 0.55) 0%,
    rgba(147, 16, 54, 0.35) 100%
  );
  border: 1px solid rgba(255, 180, 200, 0.2);
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow:
    0 2px 8px rgba(147, 16, 54, 0.2),
    inset 0 1px 1px rgba(255, 200, 210, 0.2);
}

.narrator-btn:hover {
  background: linear-gradient(
    135deg,
    rgba(147, 16, 54, 0.7) 0%,
    rgba(147, 16, 54, 0.5) 100%
  );
  border-color: rgba(255, 180, 200, 0.35);
  box-shadow:
    0 4px 16px rgba(147, 16, 54, 0.3),
    inset 0 1px 1px rgba(255, 200, 210, 0.3);
  transform: translateY(-1px);
}

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

/* Active / playing state */
.narrator-btn--active {
  background: linear-gradient(
    135deg,
    rgba(231, 76, 60, 0.55) 0%,
    rgba(231, 76, 60, 0.35) 100%
  );
  border-color: rgba(231, 76, 60, 0.4);
  animation: narrator-pulse 1.5s ease-in-out infinite;
}

@keyframes narrator-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.narrator-btn svg {
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Glass pill — shared base for all control-row toggle buttons
   -------------------------------------------------------------------------- */
.fullscreen-toggle,
.narrator-toggle,
.home-pill {
  padding: 1rem 1.25rem;
  background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.45) 0%,
    rgba(255, 255, 255, 0.25) 100%);
  backdrop-filter: blur(16px) saturate(200%);
  -webkit-backdrop-filter: blur(16px) saturate(200%);
  color: #2c2c2c;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 50px;
  cursor: pointer;
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.06),
    inset 0 1px 1px rgba(255, 255, 255, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.fullscreen-toggle:hover,
.narrator-toggle:hover,
.home-pill:hover {
  background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.55) 0%,
    rgba(255, 255, 255, 0.35) 100%);
  border-color: rgba(255, 255, 255, 0.5);
}

/* --- Per-element overrides --- */

.narrator-toggle {
  opacity: 1;
  pointer-events: auto;
}

.home-pill {
  text-decoration: none;
  flex-shrink: 0;
  order: 99;
}

.fullscreen-toggle.active {
  background: linear-gradient(135deg,
    rgba(59, 130, 246, 0.3) 0%,
    rgba(59, 130, 246, 0.15) 100%);
  border-color: rgba(255, 255, 255, 0.4);
  color: #1d4ed8;
}

.narrator-toggle.active {
  background: linear-gradient(135deg,
    rgba(147, 16, 54, 0.3) 0%,
    rgba(147, 16, 54, 0.15) 100%);
  border-color: rgba(255, 255, 255, 0.4);
  color: #8b1a3a;
}

/* ==========================================================================
   Pill Wrapper — pill-to-panel expand layout for DH + Narrator
   Top-right horizontal row; clicking a pill expands it into its panel,
   pushing the other pill to the left.
   ========================================================================== */

/* Override read-aloud-controls: horizontal row instead of column */
.read-aloud-controls {
  flex-direction: row !important;
  align-items: flex-start !important;
}

/* Hide the now-unused button-group (hidden buttons only) */
.read-aloud-controls > .button-group {
  display: none !important;
}

/* --------------------------------------------------------------------------
   Pill wrapper base (shared by DH and Narrator)
   -------------------------------------------------------------------------- */
.pill-wrapper {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  border-radius: 50px;
  background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.45) 0%,
    rgba(255, 255, 255, 0.25) 100%);
  backdrop-filter: blur(16px) saturate(200%);
  -webkit-backdrop-filter: blur(16px) saturate(200%);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.06),
    inset 0 1px 1px rgba(255, 255, 255, 0.6);
  transition:
    border-radius 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    background 0.35s ease,
    border-color 0.35s ease,
    box-shadow 0.35s ease;
  cursor: pointer;
}

.pill-wrapper:hover:not(.expanded) {
  background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.55) 0%,
    rgba(255, 255, 255, 0.35) 100%);
  border-color: rgba(255, 255, 255, 0.5);
}

.pill-wrapper.expanded {
  border-radius: 16px;
  cursor: default;
}

/* --------------------------------------------------------------------------
   Toggle buttons lose their own glass when inside wrapper
   -------------------------------------------------------------------------- */
.pill-wrapper .bs-debug-toggle,
.pill-wrapper .narrator-toggle {
  background: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: none;
  box-shadow: none;
  border-radius: 0;
  opacity: 1;
  pointer-events: auto;
}

/* --------------------------------------------------------------------------
   Animated body container (holds the panel; clips during transition)
   -------------------------------------------------------------------------- */
.pill-wrapper__body {
  max-height: 0;
  max-width: 0;
  opacity: 0;
  overflow: hidden;
  transition:
    max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    max-width 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.25s ease;
}

.pill-wrapper.expanded .pill-wrapper__body {
  max-height: 1200px;
  max-width: 600px;
  opacity: 1;
}

/* --------------------------------------------------------------------------
   Panels lose their own glass when inside wrapper (wrapper provides it)
   -------------------------------------------------------------------------- */
.pill-wrapper .bs-debug-panel {
  display: block;
  background: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: none;
  box-shadow: none;
  border-radius: 0;
}

.pill-wrapper .narrator-panel {
  display: flex;
  background: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: none;
  box-shadow: none;
  border-radius: 0;
}

/* --------------------------------------------------------------------------
   DH wrapper — expanded state (light glass, matching original panel)
   -------------------------------------------------------------------------- */
.pill-wrapper--dh.expanded {
  background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.5) 0%,
    rgba(255, 255, 255, 0.3) 100%);
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.08),
    inset 0 1px 1px rgba(255, 255, 255, 0.6);
}

.pill-wrapper--dh.expanded .bs-debug-toggle {
  color: #1a7a42;
}

/* --------------------------------------------------------------------------
   Narrator wrapper — expanded state (dark glass, matching original panel)
   -------------------------------------------------------------------------- */
.pill-wrapper--narrator.expanded {
  background: linear-gradient(135deg,
    rgba(20, 20, 30, 0.72) 0%,
    rgba(20, 20, 30, 0.52) 100%);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.35),
    0 2px 8px rgba(0, 0, 0, 0.2),
    inset 0 1px 1px rgba(255, 255, 255, 0.25),
    inset 0 -1px 2px rgba(255, 255, 255, 0.05);
}

.pill-wrapper--narrator.expanded .narrator-toggle {
  color: rgba(255, 255, 255, 0.85);
}

.pill-wrapper--narrator .narrator-toggle.active {
  background: none;
  border: none;
  box-shadow: none;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .narrator-panel {
    width: clamp(170px, 45vw, 260px);
    padding: 8px 10px 10px;
    gap: 6px;
  }

  .narrator-chip {
    padding: 2px 8px;
  }
}

@media (max-width: 480px) {
  .narrator-panel {
    width: clamp(170px, 55vw, 260px);
  }

  .narrator-chips {
    gap: 3px;
  }

  .read-aloud-controls {
    gap: 0.35rem !important;
  }
}

/* --------------------------------------------------------------------------
   Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .narrator-panel {
    transition: none;
  }

  .narrator-btn--active {
    animation: none;
  }

  .narrator-chip {
    transition: none;
  }

  .narrator-btn {
    transition: none;
  }

  .pill-wrapper {
    transition: none;
  }

  .pill-wrapper__body {
    transition: none;
  }

  .fullscreen-toggle,
  .narrator-toggle,
  .home-pill {
    transition: none;
  }
}