@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;600;700&family=Playfair+Display:ital,wght@0,700;1,700&display=swap");

:root {
  --ht-green: #a1091d; /* Xanh lá đậm */
  --ht-green-light: #ecf3f0;
  --ht-red: #b91c1c; /* Đỏ Tết */
  --ht-red-light: #fef2f2;
  --ht-gold: #d4af37;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Plus Jakarta Sans", sans-serif;
  background-color: var(--ht-red-light); /* Nền đỏ nhạt ấm cúng */
  color: #333;
}

.font-display {
  font-family: "Playfair Display", serif;
}

/* Menu Navigation */
header {
  background-color: var(--ht-green);
  padding: 15px 5%;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  color: white;
  font-size: 1.8rem;
  font-weight: bold;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 20px;
}
.nav-links a {
  color: white;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s;
}
.nav-links a:hover {
  color: var(--ht-gold);
}

/* Layout chung */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
}
.text-center {
  text-align: center;
}

.section-title {
  font-size: 2.5rem;
  color: var(--ht-red);
  margin-bottom: 20px;
}
.section-title::after {
  content: "";
  display: block;
  width: 80px;
  height: 4px;
  background: var(--ht-red);
  margin: 10px auto;
  border-radius: 2px;
}

/* Các mục nổi bật (Grid 3 cột) */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

/* Hình ảnh tiêu biểu (Grid 2 cột, nhiều hàng) */
.grid-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 20px;
}

/* Nút bấm (Style bạn yêu cầu) */
.btn-journey {
  background-color: var(--ht-red);
  color: white;
  font-family: Arial, sans-serif;
  font-weight: bold;
  font-size: 16px;
  padding: 12px 30px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: 0.3s;
  text-decoration: none;
  display: inline-block;
  margin-top: 15px;
}
.btn-journey:hover {
  background-color: #991b1b;
}

/* Card Hình ảnh có Overlay */
.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 1.5rem;
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
  height: 300px;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.gallery-item:hover img {
  transform: scale(1.1);
}
.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity 0.3s;
  text-align: center;
}
.gallery-item:hover .gallery-overlay {
  opacity: 1;
}
.gallery-overlay h3 {
  color: white;
  margin-bottom: 10px;
  font-size: 1.5rem;
}
/* Phần thêm trong phong-tục */
.timeline-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}
.timeline-card:hover .timeline-img {
  transform: scale(1.03);
}