/* styles.css - Giao diện sáng, tối ưu cho Affiliate Product Review & Hub */

/* Imports */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&family=Roboto:wght@400;500&display=swap');

/* Color Palette - Shopee Orange & Natural Green */
:root {
  --color-primary: #EE4D2D;      /* Shopee Orange */
  --color-primary-hover: #F05D40;
  --color-secondary: #2E7D32;    /* Eco Green */
  --color-bg-light: #F5F5F5;     /* Light gray page background */
  --color-card-bg: #FFFFFF;
  --color-text-dark: #212121;
  --color-text-muted: #666666;
  --color-border: #E8E8E8;
  
  --font-title: 'Inter', sans-serif;
  --font-body: 'Roboto', sans-serif;
  --border-radius: 8px;
  --transition-speed: 0.25s;
  --box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  --box-shadow-hover: 0 8px 25px rgba(238, 77, 45, 0.12);
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-light);
  color: var(--color-text-dark);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 700;
  color: var(--color-text-dark);
}

a {
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-speed) ease;
}

/* Header */
.site-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.02);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 38px;
  width: auto;
}

.logo-text {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text-dark);
}

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

.main-nav ul {
  display: flex;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  position: relative;
  padding: 4px 0;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.search-form {
  display: flex;
  align-items: center;
  background-color: #F0F0F0;
  border-radius: 20px;
  padding: 4px 6px 4px 16px;
  width: 280px;
  transition: all var(--transition-speed) ease;
}

.search-form:focus-within {
  background-color: #FFFFFF;
  box-shadow: 0 0 0 2px rgba(238, 77, 45, 0.15);
}

.search-form input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 0.9rem;
  width: 100%;
  color: var(--color-text-dark);
}

.search-form button {
  background: var(--color-primary);
  border: none;
  color: #FFFFFF;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-speed) ease;
}

.search-form button:hover {
  background-color: var(--color-primary-hover);
}

/* Hero Carousel */
.hero-carousel {
  position: relative;
  overflow: hidden;
  max-height: 480px;
  background-color: #000;
}

.carousel-wrapper {
  display: flex;
  width: 300%;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.slide {
  position: relative;
  flex: 1 0 100%;
  height: 480px;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.85;
}

.slide-content {
  position: absolute;
  bottom: 40px;
  left: 40px;
  right: 40px;
  max-width: 650px;
  background: rgba(255, 255, 255, 0.95);
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  backdrop-filter: blur(5px);
  animation: fadeInUp 0.8s ease;
}

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

.slide-content .badge {
  display: inline-block;
  background-color: var(--color-secondary);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.slide-content h2 {
  font-size: 1.8rem;
  margin-bottom: 10px;
  line-height: 1.3;
}

.slide-content p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.carousel-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.8);
  border: none;
  color: var(--color-text-dark);
  font-size: 1.2rem;
  width: 44px;
  height: 44px;
  cursor: pointer;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-speed) ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  z-index: 10;
}

.carousel-nav:hover {
  background: #FFFFFF;
  color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.carousel-nav.prev { left: 20px; }
.carousel-nav.next { right: 20px; }

/* Categories */
.categories-section {
  margin-top: 30px;
}

.category-list {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.category-item {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  padding: 10px 22px;
  border-radius: 25px;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

.category-item:hover,
.category-item.active {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
  box-shadow: 0 4px 10px rgba(238, 77, 45, 0.2);
}

/* Product Section */
.product-section {
  padding: 40px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 35px;
}

.section-title {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
}

.product-card {
  background-color: var(--color-card-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  border: 1px solid var(--color-border);
  transition: all var(--transition-speed) ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow-hover);
  border-color: rgba(238, 77, 45, 0.3);
}

.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 5;
  color: #FFFFFF;
  font-family: var(--font-title);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
}

.card-badge.hot { background-color: var(--color-primary); }
.card-badge.trend { background-color: var(--color-secondary); }
.card-badge.value { background-color: #FF9800; }

.product-img-wrapper {
  width: 100%;
  height: 250px;
  overflow: hidden;
  background-color: #F9F9F9;
}

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

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

.product-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.rating {
  font-size: 0.85rem;
  color: #FFC107;
  margin-bottom: 8px;
}

.rating-text {
  color: var(--color-text-muted);
  font-weight: 400;
  margin-left: 4px;
}

.product-name {
  font-size: 1.1rem;
  margin-bottom: 8px;
  line-height: 1.4;
  height: 48px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.product-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 15px;
  height: 57px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.price-container {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  margin-bottom: 18px;
}

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

.price-current {
  font-size: 1.25rem;
  color: var(--color-primary);
  font-weight: 700;
}

.discount-tag {
  background-color: #FFEAE6;
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

.card-actions {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 10px;
}

.btn-review,
.btn-affiliate {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 10px 0;
  border-radius: 6px;
  text-align: center;
  cursor: pointer;
}

.btn-review {
  background-color: #FFFFFF;
  color: var(--color-text-dark);
  border: 1px solid var(--color-border);
}

.btn-review:hover {
  background-color: #F0F0F0;
  border-color: #D0D0D0;
}

.btn-affiliate {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border: 1px solid var(--color-primary);
  box-shadow: 0 2px 8px rgba(238, 77, 45, 0.15);
}

.btn-affiliate:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: 0 4px 12px rgba(238, 77, 45, 0.25);
}

/* Blog/Review Section */
.blog-section {
  padding: 40px 0 60px;
  border-top: 1px solid var(--color-border);
}

.blog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.blog-card {
  background-color: #FFFFFF;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  display: flex;
}

.blog-card-content {
  padding: 25px;
}

.blog-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 8px;
}

.blog-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  line-height: 1.4;
}

.blog-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 15px;
}

.read-more {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary);
}

.read-more:hover {
  color: var(--color-primary-hover);
}

/* Footer */
.site-footer {
  background-color: #FFFFFF;
  border-top: 1px solid var(--color-border);
  padding: 50px 0 30px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  max-width: 500px;
}

.footer-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-end;
}

.footer-nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

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

.footer-copyright {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* Responsive design */
@media (max-width: 992px) {
  .slide { height: 380px; }
  .slide-content { bottom: 20px; left: 20px; right: 20px; padding: 20px; }
  .blog-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 30px; }
  .footer-nav ul { align-items: flex-start; }
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    gap: 14px;
    align-items: center;
  }
  
  .main-nav ul {
    gap: 18px;
  }
  
  .search-form {
    width: 100%;
  }
}