/* =========================================================
   Fairy Life Sciences — AI Assistant Chat Widget
   Styled to match brand tokens (navy + jewel green accent).
   ========================================================= */

#qa-widget-root {
  --qa-accent: var(--jewel-500, #10b981);
  --qa-accent-hover: var(--jewel-400, #3dd4a7);
  --qa-accent-deep: var(--jewel-700, #067a3a);
  --qa-brand-ink: var(--brand-900, #0a1628);
  --qa-bubble-ai-bg: rgba(15, 32, 68, 0.05);
  --qa-bubble-user-bg: linear-gradient(135deg, var(--jewel-500, #10b981) 0%, var(--jewel-600, #0da34d) 100%);
  --qa-panel-bg: rgba(255, 255, 255, 0.96);
  --qa-panel-border: rgba(15, 32, 68, 0.10);
  --qa-shadow:
    0 30px 70px -22px rgba(10, 22, 40, 0.35),
    0 14px 28px -12px rgba(10, 22, 40, 0.22);
  --qa-text: var(--brand-900, #0a1628);
  --qa-text-muted: var(--titan-600, #6b7280);
  --qa-error-bg: rgba(239, 68, 68, 0.08);
  --qa-error-border: rgba(239, 68, 68, 0.25);
  --qa-error-text: #b91c1c;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
}

/* ---------- Floating button ---------- */
.qa-fab {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 60px;
  height: 60px;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--brand-800, #0f2044) 0%, var(--brand-900, #0a1628) 100%);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow:
    0 20px 40px -14px rgba(10, 22, 40, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.10);
  z-index: 1000;
  transition: transform .25s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow .25s ease,
              background .3s ease;
}
.qa-fab::before {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--jewel-400, #3dd4a7), transparent 60%);
  opacity: 0;
  z-index: -1;
  transition: opacity .3s ease;
}
.qa-fab:hover {
  transform: translateY(-3px) scale(1.04);
  background: linear-gradient(135deg, var(--jewel-600, #0da34d) 0%, var(--jewel-700, #067a3a) 100%);
  box-shadow:
    0 26px 50px -18px rgba(16, 185, 129, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
}
.qa-fab:hover::before { opacity: 1; }

.qa-fab-icon { width: 24px; height: 24px; }

.qa-fab-pulse {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.55);
  animation: qa-fab-pulse 2.4s ease-out infinite;
}
@keyframes qa-fab-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.45); }
  70%  { box-shadow: 0 0 0 18px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.qa-fab-tooltip {
  position: absolute;
  right: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background: var(--brand-900, #0a1628);
  color: #e2e8f0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 8px 14px;
  border-radius: 8px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.qa-fab:hover .qa-fab-tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* ---------- Panel ---------- */
.qa-panel {
  position: fixed;
  right: 28px;
  bottom: 104px;
  width: 400px;
  max-width: calc(100vw - 32px);
  height: 600px;
  max-height: calc(100vh - 140px);
  background: var(--qa-panel-bg);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid var(--qa-panel-border);
  border-radius: 22px;
  box-shadow: var(--qa-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 1001;
  opacity: 0;
  transform: translateY(16px) scale(0.96);
  transform-origin: bottom right;
  pointer-events: none;
  transition: opacity .26s ease,
              transform .32s cubic-bezier(0.16, 1, 0.3, 1);
}
.qa-panel-open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

@media (max-width: 480px) {
  .qa-panel {
    right: 12px;
    left: 12px;
    bottom: 96px;
    width: auto;
    height: calc(100vh - 130px);
    border-radius: 18px;
  }
  .qa-fab { right: 16px; bottom: 16px; width: 54px; height: 54px; }
}

/* ---------- Header ---------- */
.qa-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--qa-panel-border);
  background:
    linear-gradient(180deg, rgba(16, 185, 129, 0.08) 0%, transparent 100%),
    linear-gradient(180deg, rgba(15, 32, 68, 0.03) 0%, transparent 100%);
}

.qa-header-badge {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--jewel-500, #10b981) 0%, var(--brand-700, #1b3a6b) 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  flex-shrink: 0;
  box-shadow: 0 6px 14px -6px rgba(16, 185, 129, 0.6);
}
.qa-header-badge svg { width: 18px; height: 18px; }

.qa-header-text { flex: 1; min-width: 0; }
.qa-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--qa-text);
  display: flex;
  align-items: center;
  gap: 6px;
}
.qa-title-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--jewel-500, #10b981);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.18);
  animation: qa-dot-pulse 2s ease-in-out infinite;
}
@keyframes qa-dot-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.45; }
}
.qa-subtitle {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--qa-text-muted);
  margin-top: 3px;
  letter-spacing: 0.02em;
}

.qa-icon-btn {
  width: 30px;
  height: 30px;
  border: 0;
  background: transparent;
  color: var(--qa-text-muted);
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .2s ease, color .2s ease;
}
.qa-icon-btn:hover {
  background: rgba(15, 32, 68, 0.06);
  color: var(--qa-text);
}

/* ---------- Thread ---------- */
.qa-thread {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 20px 18px 10px;
  scroll-behavior: smooth;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.qa-thread::-webkit-scrollbar { width: 6px; }
.qa-thread::-webkit-scrollbar-thumb {
  background: rgba(15, 32, 68, 0.15);
  border-radius: 3px;
}

.qa-msg { display: flex; flex-direction: column; gap: 5px; max-width: 90%; }
.qa-msg-user { align-self: flex-end; align-items: flex-end; }
.qa-msg-ai   { align-self: flex-start; align-items: flex-start; }

.qa-msg-anim { animation: qa-msg-in .3s cubic-bezier(0.16, 1, 0.3, 1); }
@keyframes qa-msg-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.qa-msg-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--qa-text-muted);
  padding: 0 2px;
}

.qa-msg-bubble {
  font-size: 14px;
  line-height: 1.6;
  padding: 11px 15px;
  border-radius: 16px;
  white-space: pre-wrap;
  word-wrap: break-word;
  color: var(--qa-text);
  background: var(--qa-bubble-ai-bg);
  border: 1px solid rgba(15, 32, 68, 0.05);
}

.qa-msg-user .qa-msg-bubble {
  background: var(--qa-bubble-user-bg);
  color: #ffffff;
  border-color: transparent;
  border-bottom-right-radius: 4px;
  box-shadow: 0 6px 16px -6px rgba(16, 185, 129, 0.40);
}
.qa-msg-ai .qa-msg-bubble { border-bottom-left-radius: 4px; }

.qa-msg-error .qa-msg-bubble {
  background: var(--qa-error-bg);
  border: 1px solid var(--qa-error-border);
  color: var(--qa-error-text);
}

.qa-retry {
  margin-top: 8px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  background: transparent;
  border: 1px solid currentColor;
  color: inherit;
  border-radius: 8px;
  cursor: pointer;
}
.qa-retry:hover { background: rgba(0, 0, 0, 0.05); }

.qa-caret {
  display: inline-block;
  width: 7px;
  height: 14px;
  background: var(--qa-accent);
  margin-left: 2px;
  vertical-align: -2px;
  animation: qa-caret-blink 1s steps(1, end) infinite;
  border-radius: 2px;
}
@keyframes qa-caret-blink { 50% { opacity: 0; } }

/* ---------- Suggested chips ---------- */
.qa-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 6px;
}
.qa-chip {
  border: 1px solid var(--qa-panel-border);
  background: rgba(255, 255, 255, 0.7);
  color: var(--qa-text);
  font-size: 12.5px;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: all .22s ease;
}
.qa-chip:hover {
  background: var(--qa-accent);
  border-color: var(--qa-accent);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 14px -6px rgba(16, 185, 129, 0.45);
}

/* ---------- Composer ---------- */
.qa-composer {
  display: flex;
  gap: 8px;
  padding: 14px 16px 16px;
  border-top: 1px solid var(--qa-panel-border);
  background: linear-gradient(0deg, rgba(255, 255, 255, 0.6), transparent);
}
.qa-input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--qa-panel-border);
  background: rgba(255, 255, 255, 0.85);
  color: var(--qa-text);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 14px;
  outline: none;
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.qa-input::placeholder { color: var(--qa-text-muted); }
.qa-input:focus {
  border-color: var(--qa-accent);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.qa-send {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--jewel-500, #10b981) 0%, var(--jewel-600, #0da34d) 100%);
  color: #ffffff;
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease;
  box-shadow: 0 6px 14px -6px rgba(16, 185, 129, 0.55);
}
.qa-send:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px -8px rgba(16, 185, 129, 0.65);
}
.qa-send:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.qa-footer-note {
  font-size: 10.5px;
  color: var(--qa-text-muted);
  text-align: center;
  padding: 0 16px 10px;
  letter-spacing: 0.02em;
}