/* CSS cho website nước hoa sang trọng */
:root {
  --primary-color: #efbf00;
  --primary-dark: #d6aa00;
  --primary-light: #f5d633;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --text-dark: #2c3e50;
  --text-light: #7f8c8d;
  --bg-light: #f8f9fa;
  --border-color: #e9ecef;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: #fff;
}

/* Header Styles */
.navbar-brand {
  font-family: "Arial Black", Arial, sans-serif;
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -1px;
  color: var(--primary-color) !important;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.navbar {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.navbar.scrolled {
  box-shadow: var(--shadow);
}

.nav-link {
  color: var(--text-dark) !important;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 50%;
  background-color: var(--primary-color);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

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

/* Hero Banner */
.hero-banner {
  background: linear-gradient(135deg, rgba(239, 191, 0, 0.1), rgba(239, 191, 0, 0.05));
  min-height: 500px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%23efbf00" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="%23efbf00" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-light);
  margin-bottom: 2rem;
}

/* Buttons */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border: none;
  color: #fff;
  font-weight: 600;
  padding: 12px 30px;
  border-radius: 50px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(239, 191, 0, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(239, 191, 0, 0.4);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.btn-outline-primary {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  font-weight: 600;
  padding: 10px 25px;
  border-radius: 50px;
  transition: all 0.3s ease;
}

.btn-outline-primary:hover {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(239, 191, 0, 0.3);
}

/* Product Cards */
.product-card {
  border: none;
  border-radius: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  height: 100%;
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
}

.product-card .card-img-top {
  height: 250px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.product-card:hover .card-img-top {
  transform: scale(1.05);
}

.product-card .card-body {
  padding: 1.5rem;
}

.product-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.product-price {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-color);
}

.product-price-original {
  font-size: 0.9rem;
  color: var(--text-light);
  text-decoration: line-through;
}

/* Category Cards */
.category-card {
  border: none;
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.3s ease;
  background: linear-gradient(135deg, #fff, #f8f9fa);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.category-card .card-img-top {
  height: 200px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.category-card:hover .card-img-top {
  transform: scale(1.1);
}

/* Modal Styles */
.modal-content {
  border: none;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
  padding: 2rem 2rem 1rem;
}

.modal-body {
  padding: 2rem;
}

/* Footer */
.footer {
  background: linear-gradient(135deg, #2c3e50, #34495e);
  color: #fff;
  padding: 3rem 0 1rem;
}

.footer h5 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.footer a {
  color: #bdc3c7;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer a:hover {
  color: var(--primary-color);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .product-card .card-img-top {
    height: 200px;
  }
}

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

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

/* Admin Styles */
.admin-sidebar {
  background: linear-gradient(180deg, var(--secondary-color), #34495e);
  min-height: 100vh;
  color: #fff;
}

.admin-sidebar .nav-link {
  color: #bdc3c7 !important;
  padding: 1rem 1.5rem;
  border-radius: 0;
  transition: all 0.3s ease;
}

.admin-sidebar .nav-link:hover,
.admin-sidebar .nav-link.active {
  background: var(--primary-color);
  color: #fff !important;
}

.admin-header {
  background: #fff;
  box-shadow: var(--shadow);
  padding: 1rem 0;
}

.stats-card {
  background: linear-gradient(135deg, #fff, #f8f9fa);
  border: none;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease;
}

.stats-card:hover {
  transform: translateY(-5px);
}

.stats-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
}

.stats-icon.primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.stats-icon.success {
  background: linear-gradient(135deg, #27ae60, #2ecc71);
}

.stats-icon.info {
  background: linear-gradient(135deg, #3498db, #5dade2);
}

.stats-icon.warning {
  background: linear-gradient(135deg, #f39c12, #f1c40f);
}