:root {
  --primary: #ff5a1f;
  --primary-dark: #e84b12;
  --bg: #f7f8fa;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --green: #16a34a;
  --red: #ef4444;
  --yellow: #f59e0b;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 18px;
}

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

body {
  font-family: 'Be Vietnam Pro', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

img {
  display: block;
  width: 100%;
}

button,
input,
select {
  font: inherit;
}

.container {
  width: min(1280px, 92%);
  margin: 0 auto;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hidden {
  display: none !important;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.8);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  transition: all 0.3s ease;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.3s ease;
  max-height: 100px;
}

.brand-text {
  flex: 1;
}

.brand-logo {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  overflow: hidden;
  background: none; /* Loại bỏ nền gradient cũ */
}

.brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand h1 {
  font-size: 1.25rem;
  font-weight: 800;
}

.brand p {
  font-size: 0.85rem;
  color: var(--muted);
}

.header-nav {
  display: flex;
  gap: 20px;
  align-items: center;
}

.header-nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  transition: color 0.2s ease;
}

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

.header-actions input {
  width: 340px;
  max-width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  outline: none;
}

.hero {
  padding: 28px 0 20px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 20px;
}

.hero-left,
.hero-right,
.toolbar {
  padding: 24px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 12px;
  background: #fff1eb;
  color: var(--primary);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.hero-left h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2; /* Giới hạn tối đa 2 dòng */
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}

.hero-left p {
  color: var(--muted);
  margin-bottom: 18px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.hero-stats div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.hero-stats strong {
  display: block;
  font-size: 1.2rem;
  color: var(--primary);
}

.hero-stats span {
  font-size: 0.85rem;
  color: var(--muted);
}

.btn {
  border: none;
  border-radius: 14px;
  padding: 14px 18px;
  cursor: pointer;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: 0.25s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
}

.btn-primary:hover,
.btn-secondary:hover {
  transform: translateY(-2px);
}

.btn-secondary {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--text);
}

.coupon-box h3 {
  margin-bottom: 16px;
}

.coupon-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.coupon-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border: 1px dashed #fdba74;
  border-radius: 14px;
  background: #fffaf5;
}

.coupon-code {
  font-weight: 800;
  color: var(--primary);
}

.copy-btn {
  padding: 8px 12px;
  border-radius: 10px;
  border: none;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
}

.toolbar-section {
  padding: 8px 0 10px;
}

.toolbar {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 16px;
  align-items: flex-end;
}

.toolbar-group label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--muted);
}

.toolbar-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.stats-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 10px;
}

.deal-section {
  padding: 18px 0 50px;
}

.section-head {
  margin-bottom: 18px;
}

.section-head h2 {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.section-head p {
  color: var(--muted);
}

.deal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.deal-card {
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: 0.25s ease;
  display: flex;
  flex-direction: column;
}

.deal-card:hover {
  transform: translateY(-4px);
}

.deal-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #fff;
}

.deal-thumb a {
  display: block;
  height: 100%;
}

.deal-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.deal-card:hover .deal-thumb img {
  transform: scale(1.08);
}

.badge-wrap {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  color: #fff;
}

.badge-hot { background: var(--red); }
.badge-tag { background: var(--primary); }
.badge-sale { background: var(--green); }

.deal-content {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.deal-category {
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 700;
}

.deal-title {
  font-size: 1rem;
  font-weight: 700;
  min-height: 48px;
  display: -webkit-box;
  -webkit-line-clamp: 2; /* Giới hạn tối đa 2 dòng */
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}

.deal-title a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}

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

.deal-brand {
  font-size: 0.85rem;
  color: var(--muted);
   display: -webkit-box;
  -webkit-line-clamp: 1; /* Giới hạn tối đa 2 dòng */
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}

.price-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.new-price {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
}

.old-price {
  font-size: 0.9rem;
  color: #9ca3af;
  text-decoration: line-through;
}

.discount-rate {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--green);
}

.meta-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--muted);
  display:none;
}

.stock-bar {
  height: 10px;
  background: #f3f4f6;
  border-radius: 999px;
  overflow: hidden;
}

.stock-fill {
  height: 100%;
  background: linear-gradient(90deg, #f59e0b, #ef4444);
}

.coupon-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  background: #fff7ed;
  border: 1px dashed #fdba74;
  border-radius: 12px;
  padding: 10px 12px;
}

.coupon-row span {
  font-size: 0.8rem;
  color: var(--muted);
}

.coupon-row strong {
  color: var(--primary);
}

.card-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.card-actions a {
  width: 100%;
}

.load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 24px;
}

.empty-state {
  margin-top: 24px;
  text-align: center;
  background: #fff;
  padding: 30px;
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.empty-state p {
  color: var(--muted);
  margin-top: 8px;
}

.site-footer {
  background: #111827;
  color: #fff;
  padding: 26px 0;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-wrap p {
  color: #cbd5e1;
  font-size: 0.92rem;
}

@media (max-width: 1100px) {
  .deal-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  .hero-grid,
  .toolbar {
    grid-template-columns: 1fr;
  }

  .deal-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .header-wrap {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 12px 0;
  }

  .header-nav {
    order: 2; /* Đưa menu xuống dưới logo trên mobile */
    margin-bottom: 10px;
  }

  .header-shrunk .brand {
    max-height: 0;
    opacity: 0;
    margin-bottom: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translateY(-20px);
  }

  .header-shrunk .header-wrap {
    padding: 8px 0;
    gap: 0;
  }

  .brand {
    flex-direction: column;
    gap: 8px;
  }

  .header-actions input {
    width: 100%;
  }

  .hero-left, .hero-right, .toolbar {
    padding: 16px;
  }
}

@media (max-width: 560px) {
  .deal-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .toolbar {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .toolbar-group label {
    margin-bottom: 4px;
  }

  .card-actions {
    grid-template-columns: 1fr;
  }

  .hero-left h2 {
    font-size: 1.5rem;
  }

  .price-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}
.hero-left.card {
  position: relative;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 380px; /* Đảm bảo đủ chiều cao hiển thị */
  display: flex;
  align-items: center;
  border: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 550px; /* Giới hạn độ rộng chữ để không che hết ảnh */
  padding: 40px;
  background: linear-gradient(90deg, rgba(255,255,255,0.95) 60%, rgba(255,255,255,0));
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* iOS Prompt Style */
.ios-prompt {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: min(380px, 92%);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(15px);
  padding: 16px;
  border-radius: 22px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: opacity 1s ease, transform 0.5s ease;
}

.ios-prompt-content {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.92rem;
  color: #333;
}

.ios-prompt-logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.ios-share-icon {
  width: 22px;
  display: inline-block;
  vertical-align: middle;
  margin: 0 2px;
}

/* Nút Back to Top */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: bold;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: scale(1.15);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.filter-link-wrap {
  margin-bottom: 20px;
}

.filter-link-card {
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  border: 1px solid var(--line);
}

.filter-link-card input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--primary);
  font-weight: 500;
  cursor: pointer;
}