/* ============================================================
   BẢNG MÀU MỚI: ROYAL NAVY & GOLD (Xanh Navy & Vàng Kim) 
   Cảm hứng: Thiết kế sang trọng, hiện đại, kính mờ (Glassmorphism)
============================================================ */
:root {
  /* Màu chủ đạo */
  --primary-color: #0F2942;
  /* Màu điểm nhấn Vàng kim loại cao cấp */
  --accent-color: #D4AF37; 
  /* Nền trang sáng, sạch sẽ */
  --bg-light: #F9FAFB;
  /* Nền Footer cực tối */
  --footer-bg: #07131F;
  /* Màu chữ */
  --text-dark: #1F2937;
  --text-on-dark: #F3F4F6;
  
  /* Typography */
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-light);
  color: var(--text-dark);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

h1, h2, h3, h4, h5, h6, .navbar-brand {
  font-family: var(--font-heading);
}

.text-primary-custom {
  color: var(--primary-color);
}

/* ==================== NAVBAR (Hiệu ứng kính mờ - Glassmorphism) ==================== */
.glass-navbar {
  background: rgba(255, 255, 255, 0.85) !important;
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
  padding: 1rem 0;
  transition: all 0.3s ease;
}

.navbar-brand {
  font-weight: 700;
  color: var(--primary-color) !important;
  font-size: 1.8rem;
  letter-spacing: 1px;
}

.navbar-brand i {
  color: var(--accent-color);
}

.navbar-nav .nav-link {
  font-weight: 600;
  color: var(--primary-color) !important;
  padding: 0.5rem 1rem;
  margin: 0 0.2rem;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  position: relative;
}

/* Gạch chân mượt mà khi hover */
.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 50%;
  background-color: var(--accent-color);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 100%;
}

.navbar-nav .nav-link:hover {
  color: var(--accent-color) !important;
}

/* Icon Navbar (User, Cart) */
.nav-icon-btn {
  font-size: 1.3rem;
  color: var(--primary-color);
  transition: color 0.3s;
}

.nav-icon-btn:hover {
  color: var(--accent-color);
}

.badge-cart-custom {
  background-color: var(--accent-color);
  color: #fff;
  font-size: 0.65rem;
  border: 2px solid #fff;
  padding: 0.35em 0.65em;
  font-family: var(--font-body);
}

/* ==================== DROPDOWN MENU ==================== */
.dropdown-menu-custom {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 10px 40px rgba(0,0,0,0.1);
  border-radius: 12px;
  padding: 0.5rem 0;
  margin-top: 1rem !important;
  min-width: 260px;
}

.dropdown-item {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--primary-color);
  padding: 0.75rem 1.5rem;
  transition: all 0.2s ease;
}

.dropdown-item:hover {
  background-color: rgba(212, 175, 55, 0.1);
  color: var(--accent-color);
  transform: translateX(5px);
}

.dropdown-item i {
  color: var(--accent-color);
  width: 20px;
  display: inline-block;
}

/* Dropdown Scrollbar Custom */
.dropdown-menu-scrollable {
  max-height: 400px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.dropdown-menu-scrollable::-webkit-scrollbar {
  width: 5px;
}
.dropdown-menu-scrollable::-webkit-scrollbar-track {
  background: transparent;
}
.dropdown-menu-scrollable::-webkit-scrollbar-thumb {
  background-color: rgba(15, 41, 66, 0.3);
  border-radius: 10px;
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
  flex: 1;
}

/* ==================== FOOTER ==================== */
footer {
  background: var(--footer-bg) !important;
  color: var(--text-on-dark) !important;
  padding: 5rem 0 2rem;
  margin-top: auto;
}

.brand-footer {
  font-size: 1.5rem;
  color: var(--accent-color);
  margin-bottom: 1.5rem;
}

footer h5 {
  color: var(--accent-color);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

footer p {
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  line-height: 1.7;
}

.social-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  color: var(--text-on-dark);
  margin-right: 12px;
  font-size: 1.2rem;
  border: 1px solid rgba(255,255,255,0.1);
}

.social-icons a:hover {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

.footer-divider {
  border-color: rgba(255,255,255,0.1);
}

/* ==================== CHATBOT LUNA AI ==================== */
#chat-circle {
  position: fixed;
  bottom: 40px;
  right: 40px;
  background: linear-gradient(135deg, var(--primary-color), #1a4570);
  color: var(--accent-color);
  width: 65px;
  height: 65px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(15, 41, 66, 0.4);
  z-index: 999;
  border: 2px solid rgba(212, 175, 55, 0.5);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#chat-circle:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 15px 30px rgba(212, 175, 55, 0.4);
  background: var(--accent-color);
  color: var(--primary-color);
}

.chat-box {
  display: none;
  position: fixed;
  bottom: 120px;
  right: 40px;
  width: 380px;
  height: 550px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  z-index: 1000;
  border-radius: 20px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.2);
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.05);
  animation: slideUpFade 0.4s ease forwards;
}

.chat-box-header {
  background: linear-gradient(135deg, var(--primary-color), #1a4570);
  color: var(--accent-color);
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-heading);
  font-size: 1.1rem;
}

.chat-box-body {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  background: #f8f9fa;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.msg-user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--primary-color), #1a4570);
  color: white;
  padding: 12px 18px;
  border-radius: 20px 20px 0 20px;
  max-width: 80%;
  font-size: 0.95rem;
  box-shadow: 0 5px 15px rgba(15, 41, 66, 0.2);
  animation: fadeInRight 0.3s ease;
}

.msg-bot {
  align-self: flex-start;
  background: white;
  color: #333;
  padding: 12px 18px;
  border-radius: 20px 20px 20px 0;
  max-width: 80%;
  font-size: 0.95rem;
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  animation: fadeInLeft 0.3s ease;
  line-height: 1.5;
}

.chat-input-area {
  padding: 15px;
  background: white;
  border-top: 1px solid rgba(0,0,0,0.05);
  display: flex;
  gap: 10px;
}

.chat-input-area input {
  border-radius: 30px;
  background: #f1f3f5;
  border: 1px solid transparent;
  padding: 12px 20px;
  transition: all 0.3s;
}

.chat-input-area input:focus {
  background: white;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.1);
  outline: none;
}

.btn-send {
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.3s;
}

.btn-send:hover {
  background: var(--primary-color);
  transform: scale(1.05);
}

/* ==================== ANIMATIONS ==================== */
@keyframes slideUpFade {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in-box {
  animation: fadeIn 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) forwards;
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ==================== ADMIN LAYOUT ==================== */
.admin-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(15, 41, 66, 0.1);
    overflow: hidden;
}

.admin-header {
    background-color: var(--primary-color, #0F2942);
    color: white;
    padding: 20px 25px;
    border-bottom: 3px solid var(--accent-color, #C5A017);
}

.admin-header h3, .admin-header h2, .admin-header h4 {
    color: white !important;
}

.admin-header h3 .bi, .admin-header h2 .bi, .admin-header h4 .bi {
    color: var(--accent-color, #C5A017) !important;
}

.admin-header .btn .bi {
    color: white !important;
}

/* Global Table Header Standard */
.table-header-navy th {
    background-color: var(--primary-color, #0F2942) !important;
    color: white !important;
    border-bottom: 2px solid var(--accent-color, #C5A017) !important;
    padding: 15px 10px !important;
    text-transform: uppercase;
    font-size: 0.85rem;
    vertical-align: middle;
}