/* Header */
.container { 
  width: 100%; 
  max-width: 1920px; 
  margin: 0 auto;
}

.header-nav { 
  width: 100%; 
  max-width: 1200px; 
  margin: auto; 
}

.tittle {
  padding: 40px 0;
}

.tittle-content {
  text-align: center;
}

.tittle-content h1 {
  font-size: 2rem; margin-bottom: 8px;
}

.tittle-content p { 
  color: #666; font-size: 14px; 
}

.blog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 0;         /* độ cao giống Figma */
  margin-bottom: 40px;
}

.filter-btn, .search-box, .sort-box > * {
  background: #fff;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 46px;            /* cứng chiều cao */
  padding: 0 20px;
  border: 1px solid #000;
  border-radius: 23px;     /* bán kính = height/2 */
  background: #fff;
  cursor: pointer;
  font-size: 14px;
}

.search-box {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  height: 46px;
  padding: 0 20px;
  border: 1px solid #333;
  border-radius: 23px;
  z-index: 10;
}

.search-box input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 15px;
  height: 100%;
  background: transparent;
}

.sort-box {
  display: flex;
  flex-direction: column;
  align-items: flex-end;      /* Căn phải */
  font-size: 14px;
}

.sort-box select {
  height: 46px;
  padding: 0 20px;
  border: 1px solid #333;
  border-radius: 23px;
  background: #fff;
  cursor: pointer;
}

/* Bố cục sidebar + posts */
.content-layout {
  display: flex;
  width: 100%;
  max-width: 1200px;
  margin: auto;
  gap: 30px;
  align-items: flex-start;
}

/* SIDEBAR */
.sidebar {
  flex: 0 0 20%;
  align-content: center;
  text-align: center;
}
.sidebar h3 {
  font-size: 1.2rem;
  margin-bottom: 16px;
}
.sidebar ul {
  list-style: none;
  padding: 0;
}
.sidebar li + li {
  margin-top: 8px;
}
.sidebar a {
  display: block;
  padding: 8px 12px;
  border: 1px solid #333;
  border-radius: 20px;
  text-decoration: none;
  color: #333;
  transition: background .2s;
}
.sidebar a:hover {
  background: #333;
  color: #fff;
}

.posts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;             
  padding: 30px;         
  background-color: #f9f9f9; 
}

.post-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
  overflow: hidden;
  
  /* đảm bảo cấu trúc flex cho badge+content+read-more */
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  
  /* xóa hết box-shadow, padding dày, text-align:center */
  box-shadow: none;
  padding: 12px;
  text-align: left;
  color: inherit; 
}

/* ẢNH GIỮ NHƯ TRƯỚC */
.post-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.post-card .badge {
  background: #000;
  color: #fff;
  padding: 4px 8px;
  border-radius: 12px;
  font-size: 12px;
  margin: 12px 0 8px 0;
  display: inline-block;
  width: auto;
}

.post-card h4 {
  margin: 0 0 4px;
  font-size: 1.1rem;
  font-weight: 600;
}

.post-card .date {
  font-size: 0.9rem;
  color: #999;
  margin-bottom: 8px;
}

.post-card .excerpt {
  flex: 1;
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 12px;
}

.post-card .read-more {
  font-size: 0.9rem;
  color: #3f51b5;
  text-decoration: none;
  margin-top: auto;
}

.post-card .read-more:hover {
  text-decoration: underline;
}

.features {
  display: flex;
  justify-content: space-between; /* chia đều khoảng trống */
  align-items: center;
  flex-wrap: wrap;                /* xuống dòng trên mobile */
  gap: 40px;                       /* khoảng cách giữa các item */
  max-width: 1200px;               /* giới hạn độ rộng container */
  margin: 60px auto;               /* canh giữa */
  padding: 0 20px;                 /* padding hai bên */
  box-sizing: border-box;
}

.feature {
  flex: 1 1 200px;       /* co giãn, ít nhất 200px rộng */
  text-align: center;
}

.feature img {
  width: 48px;           /* hoặc tuỳ chỉnh kích thước icon */
  height: auto;
  margin-bottom: 12px;
}

.feature h4 {
  margin: 0 0 6px;
  font-size: 1.1rem;
  font-weight: 600;
  color: #333;
}

.feature p {
  margin: 0;
  font-size: 0.9rem;
  color: #666;
}


/* ===== 1. PROMO SLIDER ===== */
.promo-slider {
  margin: 60px auto;      
  width: 90%;             
  max-width: 1200px;     
  box-sizing: border-box;
}

/* khung ẩn overflow */
.slider-window {
  width: 100%;
  height: 800px;
  overflow: hidden;
  border-radius: 8px;     
}

/* track bỏ width cứng, để flex tự điều chỉnh */
.slider-track {
  display: flex;
  transition: transform 0.5s ease;
}

/* mỗi slide vừa container */
.slide {
  flex: 0 0 100%;        
  box-sizing: border-box;
}

/* ảnh fill slide */
.slide img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.slider-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 12px;
}
.slider-nav button {
  border: none;
  background: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0 20px;
}
.slider-nav .dots {
  display: flex;
  list-style: none;
  margin: 0 10px;
  padding: 0;
}
.slider-nav .dots li {
  width: 24px;
  text-align: center;
  cursor: pointer;
  opacity: .5;
  transition: opacity .2s;
}
.slider-nav .dots li.active,
.slider-nav .dots li:hover {
  opacity: 1;
}

/* ===== 2. INSTAGRAM GRID ===== */
.instagram-section {
  text-align: center;
  padding: 60px 0 20px;
}
.instagram-section h2 {
  font-size: 1.8rem;
  margin-bottom: 24px;
}
.insta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 1000px;
  margin: 0 auto;
}
.insta-grid a img {
  width: 100%;
  display: block;
  border-radius: 8px;
}
.insta-icon {
  display: block;        
  margin: 24px auto;     
  width: 48px;           
  text-align: center;
}

/* 2) Ép ảnh nhỏ lại vừa khung cha */
.insta-icon img {
  display: block;        
  width: 100%;           
  height: auto;
}

/* ===== 3. NEWSLETTER ===== */
.newsletter {
  text-align: center;
  padding: 60px 0;
}
.newsletter h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
}
.subscribe-form .input-group {
  display: inline-flex;
  align-items: center;
  border: 1px solid #ccc;
  border-radius: 9999px;
  overflow: hidden;
  max-width: 400px;
  width: 80%;
}
.subscribe-form .input-group .icon {
  padding: 8px 12px;
}
.subscribe-form .input-group input {
  flex: 1;
  border: none;
  padding: 8px 12px;
  font-size: 1rem;
  outline: none;
}
.subscribe-form button {
  display: block;
  margin: 16px auto 0;
  padding: 12px 24px;
  background: #333;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
}

/* ===== 4. FOOTER ===== */
.main-footer {
  text-align: center;
  padding: 40px 0;
  background: #f5f5f5;
}
.main-footer .footer-logo {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 12px;
}
.main-footer .footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.main-footer .footer-nav a {
  color: #555;
  text-decoration: none;
  font-size: .9rem;
}
.main-footer .footer-nav a:hover {
  text-decoration: underline;
}

.input-group .icon {
  width: 20px;
  height: 20px;
  padding: 0 12px 0 8px;
  opacity: 0.85;
}