/**
 * GIAO DIỆN TRỢ LÝ TƯ VẤN THƯƠNG HIỆU - YẾN SÀO BẢO LINH
 * Phong cách Hoàng Gia Đỏ Nhung & Vàng Kim (Ruby Red & Royal Gold)
 */

:root {
  --bl-red-primary: #9e0b0f;
  --bl-red-dark: #780205;
  --bl-red-light: #c41e24;
  --bl-gold-primary: #d4af37;
  --bl-gold-light: #f7e29c;
  --bl-gold-dark: #aa820a;
  --bl-bg-cream: #fdfbf7;
  --bl-text-dark: #221f1f;
  --bl-text-muted: #665e5e;
  --bl-shadow: 0 16px 40px rgba(120, 2, 5, 0.22);
}

/* NÚT NỔI FAB (Pill Launcher) */
.brand-fab-launcher {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, var(--bl-red-primary) 0%, var(--bl-red-dark) 100%);
  color: #ffffff;
  padding: 10px 18px 10px 12px;
  border-radius: 999px;
  box-shadow: 0 8px 28px rgba(158, 11, 15, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  border: 1.5px solid rgba(212, 175, 55, 0.6);
  user-select: none;
}

.brand-fab-launcher:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 14px 34px rgba(158, 11, 15, 0.55), 0 0 16px rgba(212, 175, 55, 0.5);
  border-color: var(--bl-gold-light);
}

.brand-fab-icon-box {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bl-gold-primary), var(--bl-gold-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

.brand-fab-pulse {
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  bottom: -4px;
  border-radius: 50%;
  border: 2px solid var(--bl-gold-light);
  animation: brandPulseRing 2.2s infinite cubic-bezier(0.215, 0.61, 0.355, 1);
}

@keyframes brandPulseRing {
  0% { transform: scale(0.9); opacity: 0.9; }
  60%, 100% { transform: scale(1.4); opacity: 0; }
}

.brand-fab-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.brand-fab-title {
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.3px;
  color: #fff;
  font-family: inherit;
}

.brand-fab-sub {
  font-size: 11.5px;
  color: var(--bl-gold-light);
  opacity: 0.95;
}

.brand-fab-badge {
  background: #10b981;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.4);
}

/* CỬA SỔ CHAT */
.brand-chat-window {
  position: fixed;
  bottom: 96px;
  right: 24px;
  width: 390px;
  max-width: calc(100vw - 32px);
  height: 580px;
  max-height: calc(100vh - 120px);
  background: #ffffff;
  border-radius: 20px;
  box-shadow: var(--bl-shadow), 0 0 0 1px rgba(212, 175, 55, 0.35);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 10000;
  opacity: 0;
  transform: translateY(20px) scale(0.94);
  pointer-events: none;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* HEADER CỬA SỔ */
.brand-chat-header {
  background: linear-gradient(135deg, var(--bl-red-primary) 0%, var(--bl-red-dark) 100%);
  color: #ffffff;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid var(--bl-gold-primary);
}

.brand-chat-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-avatar {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bl-gold-primary), var(--bl-gold-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #ffffff;
  border: 1.5px solid #fff;
}

.brand-online-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 11px;
  height: 11px;
  background: #10b981;
  border-radius: 50%;
  border: 2px solid #ffffff;
}

.brand-profile-meta .brand-title {
  font-size: 15.5px;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.2;
}

.brand-status-text {
  font-size: 11px;
  color: var(--bl-gold-light);
  display: block;
  margin-top: 2px;
}

.brand-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-icon-btn {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: #ffffff;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: background 0.2s;
}

.brand-icon-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* SUGGESTION CHIPS */
.brand-suggestion-chips {
  display: flex;
  gap: 6px;
  padding: 10px 14px;
  background: #fbf9f5;
  border-bottom: 1px solid #ede8de;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: thin;
}

.brand-suggestion-chips::-webkit-scrollbar {
  height: 4px;
}

.brand-suggestion-chips::-webkit-scrollbar-thumb {
  background: #d4af37;
  border-radius: 4px;
}

.brand-chip {
  background: #ffffff;
  border: 1px solid #dfd7c7;
  color: var(--bl-red-primary);
  font-size: 11.5px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}

.brand-chip:hover {
  background: var(--bl-red-primary);
  color: #ffffff;
  border-color: var(--bl-red-primary);
}

/* CHAT BODY */
.brand-chat-body {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  background: #faf7f2;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.brand-msg {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  max-width: 88%;
  animation: brandMsgFade 0.3s ease;
}

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

.brand-msg.bot {
  align-self: flex-start;
}

.brand-msg.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.brand-msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bl-gold-primary), var(--bl-gold-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #fff;
  flex-shrink: 0;
}

.brand-msg-bubble {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 13.5px;
  line-height: 1.5;
  word-break: break-word;
}

.brand-msg.bot .brand-msg-bubble {
  background: #ffffff;
  color: var(--bl-text-dark);
  border: 1px solid #ebd9c2;
  border-bottom-left-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.brand-msg.bot .brand-msg-bubble strong {
  color: var(--bl-red-primary);
}

.brand-msg.user .brand-msg-bubble {
  background: linear-gradient(135deg, var(--bl-red-primary) 0%, var(--bl-red-dark) 100%);
  color: #ffffff;
  border-bottom-right-radius: 4px;
  box-shadow: 0 2px 8px rgba(158, 11, 15, 0.25);
}

.brand-msg.bot .brand-msg-bubble ul {
  margin: 6px 0;
  padding-left: 18px;
}

.brand-msg.bot .brand-msg-bubble a {
  color: var(--bl-red-primary);
  font-weight: 700;
  text-decoration: underline;
}

/* TYPING INDICATOR */
.typing-indicator .brand-msg-bubble {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
}

.typing-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bl-gold-primary);
  animation: brandBlink 1.4s infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes brandBlink {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* CHAT FOOTER */
.brand-chat-footer {
  padding: 12px 14px 10px;
  background: #ffffff;
  border-top: 1px solid #eee5d8;
}

.brand-input-form {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fbf9f5;
  border: 1.5px solid #dfd5c4;
  border-radius: 24px;
  padding: 4px 6px 4px 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.brand-input-form:focus-within {
  border-color: var(--bl-red-primary);
  box-shadow: 0 0 0 3px rgba(158, 11, 15, 0.12);
  background: #ffffff;
}

.brand-input-field {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  resize: none;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--bl-text-dark);
  font-family: inherit;
  max-height: 100px;
}

.brand-send-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--bl-red-primary), var(--bl-red-dark));
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, box-shadow 0.2s;
  flex-shrink: 0;
}

.brand-send-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 4px 12px rgba(158, 11, 15, 0.35);
}

.brand-footer-note {
  text-align: center;
  font-size: 10.5px;
  color: #928b84;
  margin-top: 8px;
  font-weight: 500;
}

/* MOBILE ADAPTATION */
@media (max-width: 480px) {
  .brand-fab-launcher {
    bottom: 16px;
    right: 16px;
    padding: 8px 14px 8px 10px;
  }
  .brand-fab-text {
    display: none;
  }
  .brand-chat-window {
    bottom: 0;
    right: 0;
    width: 100vw;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
  }
}