/**
 * medConnect FAQ Chatbot — Light / Dark theme system
 */

/* ── Design tokens ── */
.fcb {
  --fcb-bg: #d8e6ee;
  --fcb-bg-secondary: #e2edf4;
  --fcb-bg-tertiary: #cddce6;
  --fcb-card: #f3f8fb;
  --fcb-text: #0b1f38;
  --fcb-text-secondary: #475569;
  --fcb-text-muted: #5f7385;
  --fcb-border: rgba(11, 31, 56, 0.1);
  --fcb-border-strong: #b8ccd8;
  --fcb-glass: rgba(226, 240, 246, 0.94);
  --fcb-shadow: 0 24px 64px rgba(1, 42, 74, 0.16), 0 8px 24px rgba(11, 31, 56, 0.08);
  --fcb-shadow-soft: 0 2px 12px rgba(11, 31, 56, 0.08);
  --fcb-shadow-lift: 0 12px 32px rgba(6, 147, 150, 0.16);
  --fcb-input-bg: #f6fbfd;
  --fcb-input-border: #aec4d2;
  --fcb-bot-bubble: #edf5f9;
  --fcb-bot-text: #1e293b;
  --fcb-accent: #1a6db5;
  --fcb-accent-2: #069396;
  --fcb-accent-glow: rgba(6, 147, 150, 0.2);
  --fcb-cho-navy: #0b1f38;
  --fcb-brand-navy: #012A4A;
  --fcb-brand-teal: #069396;
  --fcb-radius-panel: 24px;
  --fcb-theme-dur: 0.4s;
  --fcb-theme-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

.fcb[data-theme="dark"] {
  --fcb-bg: #0f172a;
  --fcb-bg-secondary: #1e293b;
  --fcb-bg-tertiary: #111827;
  --fcb-card: #1e293b;
  --fcb-text: #f8fafc;
  --fcb-text-secondary: #cbd5e1;
  --fcb-text-muted: #94a3b8;
  --fcb-border: rgba(255, 255, 255, 0.08);
  --fcb-border-strong: rgba(255, 255, 255, 0.12);
  --fcb-glass: rgba(30, 41, 59, 0.92);
  --fcb-shadow: 0 24px 64px rgba(0, 0, 0, 0.45), 0 8px 24px rgba(0, 0, 0, 0.28);
  --fcb-shadow-soft: 0 2px 12px rgba(0, 0, 0, 0.28);
  --fcb-shadow-lift: 0 12px 32px rgba(37, 99, 235, 0.22);
  --fcb-input-bg: #111827;
  --fcb-input-border: rgba(255, 255, 255, 0.1);
  --fcb-bot-bubble: #1e293b;
  --fcb-bot-text: #f1f5f9;
  --fcb-accent: #2563eb;
  --fcb-accent-2: #3b82f6;
  --fcb-accent-glow: rgba(59, 130, 246, 0.35);
  --fcb-cho-navy: #f8fafc;
}

/* Smooth theme transitions */
.fcb--theme-transition,
.fcb--theme-transition .fcb-panel,
.fcb--theme-transition .fcb-header,
.fcb--theme-transition .fcb-footer,
.fcb--theme-transition .fcb-msg__bubble,
.fcb--theme-transition .fcb-welcome,
.fcb--theme-transition .fcb-action-card,
.fcb--theme-transition .fcb-input-wrap,
.fcb--theme-transition .fcb-info-card,
.fcb--theme-transition .fcb-emergency-support,
.fcb--theme-transition .fcb-icon-btn,
.fcb--theme-transition .fcb-theme-toggle,
.fcb--theme-transition .fcb-bg-robot,
.fcb--theme-transition .fcb-bg__mesh {
  transition:
    background-color var(--fcb-theme-dur) var(--fcb-theme-ease),
    background var(--fcb-theme-dur) var(--fcb-theme-ease),
    color var(--fcb-theme-dur) var(--fcb-theme-ease),
    border-color var(--fcb-theme-dur) var(--fcb-theme-ease),
    box-shadow var(--fcb-theme-dur) var(--fcb-theme-ease);
}

/* Panel */
.fcb-panel {
  border-radius: var(--fcb-radius-panel);
  background: linear-gradient(165deg, var(--fcb-bg-secondary) 0%, var(--fcb-bg) 48%, var(--fcb-bg-tertiary) 100%);
  border-color: var(--fcb-border-strong);
  box-shadow: var(--fcb-shadow);
}

.fcb-header {
  background: linear-gradient(180deg, rgba(214, 235, 242, 0.96) 0%, rgba(226, 240, 246, 0.92) 100%);
  border-bottom-color: var(--fcb-border-strong);
}

.fcb[data-theme="dark"] .fcb-header {
  background: var(--fcb-glass);
}

.fcb-header__title { color: var(--fcb-text); }
.fcb-header__sub,
.fcb-header__sub-status { color: var(--fcb-text-secondary); }
.fcb-header__logo { background: var(--fcb-card); }

.fcb-icon-btn {
  background: var(--fcb-bg-tertiary);
  color: var(--fcb-text-secondary);
}
.fcb-icon-btn:hover {
  background: var(--fcb-bg-secondary);
  color: var(--fcb-accent-2);
}

/* Messages area */
.fcb-messages { scrollbar-color: var(--fcb-accent-2) transparent; }

.fcb-msg__meta,
.fcb-msg__name { color: var(--fcb-text-muted); }

.fcb-msg--bot .fcb-msg__bubble {
  background: var(--fcb-bot-bubble);
  color: var(--fcb-bot-text);
  box-shadow: var(--fcb-shadow-soft);
  border: 1px solid var(--fcb-border-strong);
}

.fcb-msg--user .fcb-msg__bubble {
  background: linear-gradient(135deg, var(--fcb-accent), var(--fcb-accent-2));
  color: #fff;
}

/* Emotion accent on user bubbles */
.fcb-msg--user.fcb-msg--tone-positive .fcb-msg__bubble {
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.28), inset 3px 0 0 #10b981;
}
.fcb-msg--user.fcb-msg--tone-negative .fcb-msg__bubble {
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.28), inset 3px 0 0 #f59e0b;
}
.fcb-msg--user.fcb-msg--tone-neutral .fcb-msg__bubble {
  box-shadow: 0 4px 14px var(--fcb-accent-glow), inset 3px 0 0 var(--fcb-accent-2);
}
.fcb-msg--user.fcb-msg--tone-crisis .fcb-msg__bubble {
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35), inset 3px 0 0 #ef4444;
}

.fcb-msg__followup { color: var(--fcb-text-secondary); }

/* Welcome & cards */
.fcb-welcome {
  background: linear-gradient(145deg, var(--fcb-card) 0%, rgba(219, 236, 244, 0.95) 100%);
  border-color: var(--fcb-border-strong);
  box-shadow: var(--fcb-shadow-soft);
}
.fcb-welcome__title { color: var(--fcb-cho-navy); }
.fcb-welcome__lead,
.fcb-welcome__list li { color: var(--fcb-text-secondary); }
.fcb-welcome__topics-label { color: var(--fcb-text-muted); }

.fcb-action-card {
  background: var(--fcb-card);
  border-color: var(--fcb-border-strong);
  box-shadow: var(--fcb-shadow-soft);
}
.fcb-action-card:hover {
  background: linear-gradient(90deg, rgba(219, 236, 244, 0.85), var(--fcb-card));
  box-shadow: var(--fcb-shadow-lift);
}
.fcb-action-card--primary {
  border-color: rgba(59, 130, 246, 0.35);
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.12), var(--fcb-shadow-soft);
}
.fcb-action-card--danger {
  border-color: rgba(239, 68, 68, 0.4);
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.08) 0%, var(--fcb-card) 100%);
}
.fcb-action-card--danger:hover {
  box-shadow: 0 12px 32px rgba(239, 68, 68, 0.2);
}
.fcb-action-card__title { color: var(--fcb-text); }
.fcb-action-card__desc { color: var(--fcb-text-secondary); }

/* Info card (unknown / partial) */
.fcb-info-card {
  padding: 16px;
  border-radius: 20px;
  background: var(--fcb-card);
  border: 1px solid var(--fcb-border);
  box-shadow: var(--fcb-shadow-soft);
  border-left: 4px solid var(--fcb-accent-2);
}

.fcb-info-card__icon {
  font-size: 1.75rem;
  line-height: 1;
  margin-bottom: 8px;
}

.fcb-info-card__title {
  margin: 0 0 8px;
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--fcb-text);
}

.fcb-info-card__body {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--fcb-text-secondary);
}

.fcb-info-card__topics-label {
  margin: 12px 0 4px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--fcb-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.fcb-info-card__topics {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.fcb-info-card__topics li {
  position: relative;
  padding-left: 14px;
  margin-top: 4px;
  font-size: 0.8125rem;
  color: var(--fcb-text-secondary);
}

.fcb-info-card__topics li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--fcb-accent-2);
  font-weight: 700;
}

/* Emergency card */
.fcb-emergency-support {
  background: var(--fcb-card);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-left: 4px solid #ef4444;
  color: var(--fcb-text);
  box-shadow: var(--fcb-shadow-soft);
}

.fcb[data-theme="dark"] .fcb-emergency-support {
  background: linear-gradient(135deg, rgba(127, 29, 29, 0.35) 0%, var(--fcb-card) 100%);
}

.fcb-emergency-support--crisis {
  border-left-color: #dc2626;
}

.fcb-emergency-support__title {
  color: #dc2626;
}

.fcb[data-theme="dark"] .fcb-emergency-support__title {
  color: #fca5a5;
}

/* Empathy */
.fcb-empathy { background: var(--fcb-bg-secondary); }
.fcb-empathy__text { color: var(--fcb-text-secondary); }

/* Typing */
.fcb-typing {
  background: var(--fcb-bot-bubble);
  border: 1px solid var(--fcb-border);
}

/* Footer / input */
.fcb-footer {
  background: linear-gradient(0deg, rgba(214, 235, 242, 0.96) 0%, rgba(226, 240, 246, 0.9) 100%);
  border-top-color: var(--fcb-border-strong);
}

.fcb[data-theme="dark"] .fcb-footer {
  background: var(--fcb-glass);
  border-top-color: var(--fcb-border);
}

.fcb-input-wrap {
  background: var(--fcb-input-bg);
  border-color: var(--fcb-input-border);
}

.fcb-input-wrap:focus-within {
  border-color: var(--fcb-accent-2);
  box-shadow: 0 0 0 3px var(--fcb-accent-glow), var(--fcb-shadow-soft);
}

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

.fcb-input::placeholder { color: var(--fcb-text-muted); }
.fcb-input:disabled { background: var(--fcb-bg-tertiary); color: var(--fcb-text-muted); }

.fcb-char-count,
.fcb-disclaimer { color: var(--fcb-text-muted); }

.fcb-followup {
  background: var(--fcb-card);
  border-color: var(--fcb-border-strong);
  color: var(--fcb-accent-2);
}
.fcb-followup:hover { background: var(--fcb-bg-secondary); }

.fcb-restricted {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.28);
  color: #fca5a5;
}

/* ── Theme toggle ── */
.fcb-theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  overflow: visible;
  flex-shrink: 0;
}

.fcb-theme-toggle::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 52px;
  height: 28px;
  border-radius: 999px;
  border: 1px solid var(--fcb-border-strong);
  background: var(--fcb-bg-tertiary);
  transform: translate(-50%, -50%);
  transition:
    border-color 0.3s var(--fcb-theme-ease),
    box-shadow 0.3s var(--fcb-theme-ease),
    background 0.3s var(--fcb-theme-ease);
}

.fcb-theme-toggle:hover::before {
  box-shadow: 0 0 0 3px var(--fcb-accent-glow);
}

.fcb-theme-toggle:focus-visible {
  outline: 2px solid var(--fcb-accent-2);
  outline-offset: 2px;
}

.fcb-theme-toggle__track {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 52px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6px;
  font-size: 0.65rem;
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
}

.fcb-theme-toggle__icon {
  opacity: 0.45;
  transition: opacity 0.3s ease, transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.fcb-theme-toggle[data-theme="light"] .fcb-theme-toggle__icon--sun,
.fcb-theme-toggle[data-theme="dark"] .fcb-theme-toggle__icon--moon {
  opacity: 1;
  transform: scale(1.1);
}

.fcb-theme-toggle__knob {
  position: absolute;
  top: 50%;
  left: calc(50% - 24px);
  width: 22px;
  height: 22px;
  margin-top: -11px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--fcb-accent), var(--fcb-accent-2));
  box-shadow: 0 2px 8px var(--fcb-accent-glow);
  transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 2;
}

.fcb-theme-toggle[data-theme="dark"] .fcb-theme-toggle__knob {
  transform: translateX(20px);
}

/* Follow-up action cards */
.fcb-actions--followup {
  margin-top: 4px;
  padding-left: 44px;
}

.fcb-actions--emergency .fcb-action-card--danger .fcb-action-card__title {
  color: #dc2626;
}

.fcb[data-theme="dark"] .fcb-actions--emergency .fcb-action-card--danger .fcb-action-card__title {
  color: #fca5a5;
}

/* Dark mode FAB accent */
.fcb[data-theme="dark"] .fcb-fab {
  box-shadow: 0 10px 32px rgba(37, 99, 235, 0.4);
}

.fcb[data-theme="dark"] .fcb-header__online {
  border-color: var(--fcb-card);
}

.fcb[data-theme="dark"] .fcb-robot__ring {
  border-color: rgba(129, 140, 248, 0.42);
}

.fcb[data-theme="dark"] .fcb-robot__glow {
  background: radial-gradient(circle, rgba(99, 102, 241, 0.42) 0%, transparent 68%);
}

/* Dark mode — moving robot background */
.fcb[data-theme="dark"] .fcb-bg__mesh {
  background:
    radial-gradient(ellipse 55% 45% at 15% 20%, rgba(59, 130, 246, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 85% 75%, rgba(99, 102, 241, 0.16) 0%, transparent 50%),
    radial-gradient(ellipse 40% 35% at 50% 50%, rgba(37, 99, 235, 0.1) 0%, transparent 60%);
}

.fcb[data-theme="dark"] .fcb-bg__grid {
  background-image:
    linear-gradient(rgba(96, 165, 250, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(96, 165, 250, 0.07) 1px, transparent 1px);
}

.fcb[data-theme="dark"] .fcb-bg-robot {
  color: rgba(129, 140, 248, 0.2);
}

.fcb[data-theme="dark"] .fcb-bg__scanline {
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(96, 165, 250, 0.04) 48%,
    rgba(96, 165, 250, 0.08) 50%,
    rgba(96, 165, 250, 0.04) 52%,
    transparent 100%
  );
  background-size: 100% 120px;
}

/* Dark mode — FAB & chat bubbles */
.fcb[data-theme="dark"] .fcb-bubble {
  background: radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.5) 0%, rgba(96, 165, 250, 0.35) 45%, rgba(37, 99, 235, 0.15) 100%);
  border-color: rgba(147, 197, 253, 0.35);
  box-shadow:
    inset 0 1px 2px rgba(255, 255, 255, 0.25),
    0 2px 12px rgba(59, 130, 246, 0.35);
}

.fcb[data-theme="dark"] .fcb-bg-bubble {
  background: radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.35) 0%, rgba(96, 165, 250, 0.2) 50%, rgba(37, 99, 235, 0.1) 100%);
  border-color: rgba(147, 197, 253, 0.22);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.15);
}

/* Message entrance */
.fcb-animate-in {
  animation: fcb-msg-enter 0.3s var(--fcb-theme-ease) both;
}

@keyframes fcb-msg-enter {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .fcb--theme-transition,
  .fcb--theme-transition * {
    transition-duration: 0.01ms !important;
  }
  .fcb-animate-in { animation: none; }
  .fcb-theme-toggle__knob { transition-duration: 0.01ms; }
}

/* Prevent landing-page global dark input rules from breaking chatbot composer */
html[data-theme-resolved='dark'] #faq-chatbot textarea.fcb-input {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  color: var(--fcb-text) !important;
}

html[data-theme-resolved='dark'] #faq-chatbot .fcb-input-wrap {
  background: var(--fcb-input-bg) !important;
  border-color: var(--fcb-input-border) !important;
}

html[data-theme-resolved='dark'] #faq-chatbot .fcb-input::placeholder {
  color: var(--fcb-text-muted) !important;
}

/* Header branding — match landing nav logo (medconnect-theme.css sets global h2 white in dark) */
#faq-chatbot .fcb-header__title {
  color: var(--fcb-brand-navy) !important;
  -webkit-text-fill-color: var(--fcb-brand-navy) !important;
  opacity: 1 !important;
  filter: none !important;
}

#faq-chatbot .fcb-header__brand-med,
#faq-chatbot .fcb-header__title-suffix {
  color: var(--fcb-brand-navy) !important;
  -webkit-text-fill-color: var(--fcb-brand-navy) !important;
  opacity: 1 !important;
  filter: none !important;
}

#faq-chatbot .fcb-header__brand-connect {
  color: var(--fcb-brand-teal) !important;
  -webkit-text-fill-color: var(--fcb-brand-teal) !important;
  opacity: 1 !important;
  filter: none !important;
}

#faq-chatbot[data-theme="dark"] .fcb-header__title,
#faq-chatbot[data-theme="dark"] .fcb-header__brand-med,
#faq-chatbot[data-theme="dark"] .fcb-header__title-suffix {
  color: #f8fafc !important;
  -webkit-text-fill-color: #f8fafc !important;
}

#faq-chatbot[data-theme="dark"] .fcb-header__brand-connect {
  color: var(--fcb-brand-teal) !important;
  -webkit-text-fill-color: var(--fcb-brand-teal) !important;
}

#faq-chatbot .fcb-welcome__title {
  color: var(--fcb-cho-navy) !important;
  -webkit-text-fill-color: currentColor !important;
}

/* Light mode — richer background & less flat white */
.fcb:not([data-theme="dark"]) .fcb-bg__mesh {
  background:
    radial-gradient(ellipse 55% 45% at 15% 20%, rgba(6, 147, 150, 0.16) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 85% 75%, rgba(26, 109, 181, 0.14) 0%, transparent 50%),
    radial-gradient(ellipse 40% 35% at 50% 50%, rgba(11, 31, 56, 0.06) 0%, transparent 60%);
}

.fcb:not([data-theme="dark"]) .fcb-bg__grid {
  background-image:
    linear-gradient(rgba(6, 147, 150, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6, 147, 150, 0.08) 1px, transparent 1px);
}

.fcb:not([data-theme="dark"]) .fcb-icon-btn {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--fcb-border-strong);
}

.fcb:not([data-theme="dark"]) .fcb-header__logo {
  background: var(--fcb-card);
  border: 1px solid var(--fcb-border-strong);
}

.fcb:not([data-theme="dark"]) .fcb-input-wrap {
  background: var(--fcb-input-bg);
  border-color: var(--fcb-input-border);
  box-shadow: inset 0 1px 2px rgba(11, 31, 56, 0.04);
}