:root {
  --chatbot-accent: var(--accent, #6366f1);
  --chatbot-accent-soft: var(--accent-soft, rgba(99, 102, 241, 0.2));
  --chatbot-card: var(--card, rgba(15, 23, 42, 0.92));
  --chatbot-surface: rgba(255, 255, 255, 0.08);
  --chatbot-border: var(--border-subtle, rgba(148, 163, 184, 0.3));
  --chatbot-text: var(--text, #f9fafb);
  --chatbot-muted: var(--muted, #d1d5db);
  --chatbot-shadow: var(--shadow-soft, 0 22px 55px rgba(15, 23, 42, 0.8));
}

body.light {
  --chatbot-card: rgba(255, 255, 255, 0.94);
  --chatbot-surface: rgba(248, 250, 252, 0.92);
  --chatbot-border: rgba(148, 163, 184, 0.22);
  --chatbot-text: #0f172a;
  --chatbot-muted: #475569;
  --chatbot-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
}

body.light .chatbot-toggle-icon {
  background: linear-gradient(135deg, var(--chatbot-accent), #059669);
}

body.light .chatbot-header {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.18), rgba(5, 150, 105, 0.08));
}

body.light .chatbot-avatar {
  background: linear-gradient(135deg, var(--chatbot-accent), #059669);
}

body.light .chatbot-message-row.user .chatbot-bubble {
  background: linear-gradient(135deg, var(--chatbot-accent), #6d28d9);
}

body.light .chatbot-avatar-badge {
  background: rgba(124, 58, 237, 0.16);
}

body.light .suggestion-chip:hover {
  background: rgba(124, 58, 237, 0.16);
}

body.light .chatbot-input:focus {
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.18);
}

body.light .chatbot-send {
  background: linear-gradient(135deg, var(--chatbot-accent), #6d28d9);
}

.chatbot-shell {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  pointer-events: none;
}

.chatbot-toggle {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--chatbot-border);
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.76));
  color: var(--chatbot-text);
  box-shadow: var(--chatbot-shadow);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
  backdrop-filter: blur(18px);
}

body.light .chatbot-toggle {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.95));
}

.chatbot-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.24);
}

.chatbot-toggle-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  background: linear-gradient(135deg, var(--chatbot-accent), #22d3ee);
  color: white;
  font-size: 1rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.chatbot-toggle-label {
  font-weight: 600;
  letter-spacing: 0.01em;
}

.chatbot-window {
  width: min(400px, calc(100vw - 24px));
  max-height: min(80vh, 726px);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--chatbot-border);
  border-radius: 24px;
  background: var(--chatbot-card);
  box-shadow: var(--chatbot-shadow);
  backdrop-filter: blur(20px);
  overflow: hidden;
  transform: translateY(14px) scale(0.98);
  opacity: 0;
  pointer-events: none;
  transition: transform 260ms ease, opacity 260ms ease;
}

.chatbot-window.is-open {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: auto;
}

.chatbot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(34, 211, 238, 0.08));
  border-bottom: 1px solid var(--chatbot-border);
}

.chatbot-header-main {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chatbot-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--chatbot-accent), #22d3ee);
  color: white;
  font-weight: 700;
  font-size: 0.95rem;
}

.chatbot-avatar img,
.chatbot-avatar-badge img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.chatbot-title {
  font-size: 1rem;
  margin: 0 0 2px;
  color: var(--chatbot-text);
}

.chatbot-subtitle {
  font-size: 0.8rem;
  color: var(--chatbot-muted);
}

.chatbot-close {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: var(--chatbot-surface);
  color: var(--chatbot-text);
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.chatbot-close:hover {
  transform: rotate(90deg);
  background: rgba(255, 255, 255, 0.14);
}

.chatbot-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
}

.chatbot-body::-webkit-scrollbar {
  width: 7px;
}

.chatbot-body::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.3);
  border-radius: 999px;
}

.chatbot-message-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.chatbot-message-row.user {
  justify-content: flex-end;
}

.chatbot-bubble {
  max-width: 86%;
  padding: 10px 12px;
  border-radius: 16px 16px 16px 8px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--chatbot-text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  animation: fadeInUp 220ms ease;
}

.chatbot-message-row.user .chatbot-bubble {
  border-radius: 16px 16px 8px 16px;
  background: linear-gradient(135deg, var(--chatbot-accent), #4f46e5);
  color: white;
}

.chatbot-bubble p {
  margin: 0 0 6px;
  line-height: 1.55;
  white-space: pre-wrap;
}

.chatbot-bubble p:last-child {
  margin-bottom: 0;
}

.chatbot-bubble ul {
  margin: 6px 0 0 18px;
  padding: 0;
}

.chatbot-bubble li + li {
  margin-top: 4px;
}

.chatbot-time {
  display: block;
  margin-top: 6px;
  font-size: 0.7rem;
  opacity: 0.72;
}

.chatbot-message-row.user .chatbot-time {
  text-align: right;
}

.chatbot-avatar-badge {
  width: 34px;
  height: 34px;
  min-width: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(99, 102, 241, 0.16);
  color: var(--chatbot-accent);
  font-weight: 700;
  font-size: 0.85rem;
}

.chatbot-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 16px 12px;
}

.suggestion-chip {
  border: 1px solid var(--chatbot-border);
  border-radius: 999px;
  background: var(--chatbot-surface);
  color: var(--chatbot-text);
  padding: 8px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.suggestion-chip:hover {
  transform: translateY(-1px);
  background: rgba(99, 102, 241, 0.16);
}

.chatbot-input-wrap {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 12px 14px 14px;
  border-top: 1px solid var(--chatbot-border);
  background: rgba(255, 255, 255, 0.03);
}

.chatbot-input {
  flex: 1;
  resize: none;
  border: 1px solid var(--chatbot-border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--chatbot-text);
  padding: 10px 12px;
  min-height: 44px;
  max-height: 120px;
  outline: none;
  font: inherit;
}

.chatbot-input:focus {
  border-color: var(--chatbot-accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.18);
}

.chatbot-send {
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--chatbot-accent), #4f46e5);
  color: white;
  cursor: pointer;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.chatbot-send:hover {
  transform: translateY(-1px);
}

.chatbot-send:disabled,
.chatbot-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.chatbot-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.45);
  border-top-color: white;
  border-radius: 50%;
  display: inline-block;
  animation: spin 0.8s linear infinite;
}

.chatbot-typing {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  padding: 8px 10px;
}

.chatbot-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--chatbot-muted);
  animation: typingPulse 1.2s ease-in-out infinite;
}

.chatbot-dot:nth-child(2) {
  animation-delay: 0.12s;
}

.chatbot-dot:nth-child(3) {
  animation-delay: 0.24s;
}

@keyframes typingPulse {
  0%, 80%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  40% {
    transform: translateY(-3px);
    opacity: 1;
  }
}

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

@keyframes fadeInUp {
  from {
    transform: translateY(6px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 640px) {
  .chatbot-shell {
    right: 12px;
    bottom: 12px;
  }

  .chatbot-window {
    width: min(92vw, 420px);
    max-height: 85vh;
  }

  .chatbot-toggle {
    padding: 10px 14px;
  }

  .chatbot-toggle-label {
    font-size: 0.95rem;
  }
}