/* Import font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

/* ================== BASE ================== */
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: #f5f5f5;
  color: #333;
}

/* ================== LAYOUT ================== */
.chat-container {
  display: flex;
  margin: 0 auto;
  height: 85vh;
  background-color: white;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

/* ---------- Sidebar ---------- */
.sidebar {
  width: 320px;
  border-right: 1px solid #eee;
  display: flex;
  flex-direction: column;
  background-color: white;
}
.sidebar h2 {
  padding: 16px;
  margin: 0;
  font-size: 20px;
  font-weight: 600;
}
.search-container {
  position: relative;
  padding: 0 16px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.search-container input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 14px;
}
.search-container button {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  padding: 8px;
  color: #666;
}
.conversation-list {
  overflow-y: auto;
  flex: 1;
}
.conversation-item {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid #f5f5f5;
}
.conversation-item:hover {
  background-color: #f5f5f5;
}
.conversation-item.active {
  background-color: #f5f5f5;
}
.conversation-item img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  margin-right: 12px;
  object-fit: cover;
}
.conversation-item .info {
  flex: 1;
}
.conversation-item .name {
  font-weight: 600;
  font-size: 15px;
  display: block;
}
.conversation-item .preview {
  font-size: 13px;
  color: #666;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 180px;
}
.conversation-item .timestamp {
  font-size: 12px;
  color: #999;
  white-space: nowrap;
}

/* ---------- Main panel ---------- */
.main-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: #f5f5f5;
}
.no-chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px;
  color: #666;
  font-size: 16px;
}
.no-chat::before {
  content: '💬';
  font-size: 80px;
  margin-bottom: 16px;
}
.chat-view {
  display: none;
  flex: 1;
  flex-direction: column;
  height: 100%;
}

/* ================== CARD PHẦN ĐẦU ================== */
.chat-header-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  overflow: hidden;
  margin: 8px 12px 0;
}

/* Header */
.chat-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid #f0f0f0;
  min-height: 64px;
}
.chat-header .back {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
}
.chat-header img {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid #eee;
}
.chat-header .info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  line-height: 1.1;
}
.chat-header .name,
.chat-header .status {
  margin: 0;
}


.chat-link { display:flex; align-items:center; gap:10px; text-decoration:none; color:inherit; }
.chat-link .name { font-weight:600; }


.chat-header .status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #6b7280;
  line-height: 1;
}
.chat-header .status::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #9ca3af;
  flex: 0 0 8px;
}
.chat-header button.menu {
  margin-left: auto;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 20px;
  line-height: 1;
  color: #666;
  cursor: pointer;
}

/* Product row */
.product-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
}
.product-card img {
  width: 64px;
  height: 64px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid #eee;
}
.product-card .info {
  flex: 1;
}
.product-card .title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-card .price {
  font-size: 15px;
  font-weight: 700;
  color: #0084ff;
}

/* ================== QUICK REPLIES ================== */
.quick-replies {
  display: flex;
  overflow-x: auto;
  padding: 8px 12px 12px;
  gap: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.quick-replies::-webkit-scrollbar {
  display: none;
}
.quick-reply {
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
}
.quick-reply:hover {
  background: #f5f5f5;
}

/* ================== MESSAGE AREA ================== */
.message-area {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
}
.bubble {
  position: relative;
  max-width: 70%;
  padding: 8px 12px;
  border-radius: 12px;
  margin: 6px 0;
  line-height: 1.4;
  z-index: 100;
  overflow: visible;
}
.bubble p {
  margin: 0;
  font-size: 14px;
}
.bubble .time {
  font-size: 11px;
  color: #999;
  display: block;
  margin-top: 4px;
  text-align: right;
}
.bubble.incoming {
  align-self: flex-start;
  background: #fff;
  border: 1px solid #eee;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}
.bubble.outgoing {
  align-self: flex-end;
  background: #fff6cc;
  color: #333;
}
.more-container {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}
.bubble.incoming .more-container {
  left: calc(100% + 8px);
}
.bubble.outgoing .more-container {
  right: calc(100% + 8px);
}
.more-btn {
  background: transparent;
  border: none;
  font-size: 18px;
  cursor: pointer;
  opacity: 0.85;
  padding: 4px;
  display: none;
}
.more-btn:hover {
  opacity: 1;
}
.context-menu {
  display: none;
  flex-direction: column;
  background: #fff;
  border: 1px solid #e5e7eb;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
  border-radius: 8px;
  min-width: 140px;
  margin-top: 4px;
  z-index: 10;
}
.context-menu button {
  padding: 8px 12px;
  background: #fff;
  border: none;
  text-align: left;
  cursor: pointer;
}
.context-menu button:hover {
  background: #f3f4f6;
}
.bubble p.revoked {
  font-style: italic;
  opacity: 0.75;
}

/* ================== INPUT AREA ================== */
.input-area {
  position: relative;
  margin: 12px 16px 4px;
}

.input-area textarea {
  width: 100%;
  padding: 12px 44px 12px 12px; /* padding phải đủ cho nút gửi */
  border-radius: 24px;
  border: 1.5px solid #ddd;
  font-size: 14px;
  resize: none;
  min-height: 44px;
  box-sizing: border-box;
  outline: none;
}

.input-area textarea:focus {
  border-color: #0d6efd; /* tím nhẹ */
  
}

.input-area button.send {
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  background-color: #0d6efd; /* tím */
  border: none;
  color: white;
  font-size: 18px;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  display: none; /* ẩn mặc định */
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(124, 58, 237, 0.5);
}

.input-area.active button.send {
  display: flex;
}

.input-buttons {
  margin: 0 16px 12px;
  display: flex;
  gap: 8px;
}

.input-buttons button.attach {
  background: #f3f4f6;
  border: 1px solid #ddd;
  border-radius: 20px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  color: #444;
  transition: background-color 0.3s;
}

.input-buttons button.attach:hover {
  background-color: #e0e7ff;
}


/* Nút scroll xuống */
#scroll-down-btn {
  position: absolute;
  top: 400px;
  left: 50%;
  transform: translateX(-50%);
  display: none;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 20px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  z-index: 1000;
}


.preview-tray img { box-shadow: 0 1px 3px rgba(0,0,0,.15); }
.preview-tray button { line-height: 18px; }


/* ===== Notice Modal ===== */
.ntc-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.35);
  display: none; align-items: center; justify-content: center;
  z-index: 9999;
}
.ntc-overlay.show { display: flex; }

.ntc-modal {
  width: min(92vw, 520px);
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,.2);
  padding: 22px 24px 20px;
  position: relative;
  animation: ntc-pop .16s ease-out;
  text-align: center;
}
@keyframes ntc-pop { from { transform: translateY(6px); opacity: 0 } to { transform: translateY(0); opacity: 1 } }

.ntc-title {
  margin: 4px 0 10px; 
  font-size: 20px; font-weight: 700; color: #2b2b2b;
}
.ntc-message {
  margin: 0 0 18px; 
  font-size: 15px; color: #444; line-height: 1.5;
}

.ntc-btn {
  display: inline-block;
  width: 100%;
  padding: 12px 16px;
  background: #fde68a; /* vàng nhạt */
  border: none; border-radius: 10px;
  font-weight: 700; color: #1f2937;
  cursor: pointer;
}
.ntc-btn:hover { filter: brightness(0.98); }

.ntc-close {
  position: absolute; right: 10px; top: 8px;
  width: 32px; height: 32px; border-radius: 50%;
  background: transparent; border: none; font-size: 22px; 
  color: #777; cursor: pointer;
}
.ntc-close:hover { background: #f5f5f5; color: #333; }

/* trạng thái (tùy chọn) */
.ntc-modal.ntc-error .ntc-title { color: #b91c1c; }
.ntc-modal.ntc-warning .ntc-title { color: #b45309; }
.ntc-modal.ntc-success .ntc-title { color: #166534; }


/* Vùng chứa nút ⋮ */
.sidebar-actions {
  position: relative;
  margin-left: auto;
}

.sb-more-btn {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  padding: 4px 8px;
  color: #666;
}

.sb-menu {
  position: absolute;
  right: 0;
  top: 32px;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  padding: 6px 0;
  width: 220px;
  display: none;
  z-index: 10;
}
.sb-menu.show { display: block; }

.sb-item {
  display: block;
  width: 100%;
  border: none;
  background: transparent;
  padding: 10px 16px;
  text-align: left;
  font-size: 14px;
  cursor: pointer;
}
.sb-item:hover {
  background: #f8f8f8;
}
.sb-item:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Thanh đáy */
.sb-multibar {
  display: none;
  flex-shrink: 0;
  padding: 10px;
  gap: 8px;
  border-top: 1px solid #eee;
  background: #fff;
}

.sb-cancel {
  border: none;
  background: transparent;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 14px;
}

.sb-hide {
  flex: 1;
  border: none;
  border-radius: 10px;
  padding: 8px 14px;
  background: #111;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
}
.sb-hide:disabled {
  opacity: .4;
  cursor: not-allowed;
}

/* Checkbox hiển thị khi chọn nhiều */
.multi .conversation-item {
  padding-left: 32px;
  position: relative;
}
.multi .conversation-item::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
}
.multi .conversation-item input[type="checkbox"] {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  margin: 0;
}



/* ================== RESPONSIVE ================== */
@media (max-width: 768px) {
  .chat-container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    height: 100%;
  }
  .main-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
  }
  .chat-container.chat-open .sidebar {
    display: none;
  }
  .chat-container.chat-open .main-panel {
    display: flex;
  }
  .chat-header .back {
    display: block;
  }
  .chat-header-card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    margin: 99px 0px 0;
  }
}
@media (max-width: 500px) {
  .chat-header-card {
    margin: 45px 0px;
    /* hoặc lớn hơn nếu header sticky */
  }
}