body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  background: #f9f9f9;
  color: #222;
}
header {
  background-color: #004d40;
  color: white;
  padding: 1rem 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: white;
  font-weight: 700;
  font-size: 1.4rem;
  text-decoration: none;
}
.logo-icon {
  width: 45px;
  height: 45px;
  overflow: hidden;    
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;    
}
nav {
  flex: 2 0 400px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
nav button {
  background: #00796b;
  border: none;
  color: white;
  padding: 0.5rem 1rem;
  cursor: pointer;
  border-radius: 4px;
  flex: 1 1 auto;
  min-width: 100px;
}
nav button:hover,
nav button.active {
  background: #004d40;
}
#btn-cart {
  background: #c62828;
}
main {
  max-width: 1200px;
  margin: 1rem auto;
  padding: 0 1rem;
}
#category-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #00796b;
}
.book-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
/* Định dạng khung sản phẩm chuẩn giống bản gốc */
.book {
  background: white;
  border-radius: 10px;
  box-shadow: 0 5px 10px rgb(0 0 0 / 0.1);
  padding: 1rem;
  position: relative; /* Giữ khung làm mốc định vị */
  display: flex;
  flex-direction: column;
  padding-top: 2.5rem; /* Tạo khoảng trống phía trên cho nhãn SALE bay lên */
}
.sale-label {
  position: absolute;
  top: 10px;  /* Nằm ở khoảng trắng phía trên cùng của card */
  left: 15px; /* Căn lề trái tương ứng với lề của card */
  background: #e53935;
  color: white;
  padding: 4px 10px;
  font-weight: bold;
  border-radius: 4px;
  font-size: 0.8rem;
  z-index: 10;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}
.book img {
  width: 100%;
  height: 180px;
  object-fit: contain;
  border-radius: 6px;
  margin-bottom: 10px;
  margin-top: 5px; /* Tách biệt ảnh với nhãn sale phía trên */
}
.book h3 {
  margin: 0.3rem 0 0.3rem;
  color: #004d40;
  font-size: 1.1rem;
}
.book p.desc {
  flex-grow: 1;
  font-size: 0.9rem;
  color: #444;
  margin-bottom: 0.5rem;
}
.book p.price {
  font-weight: bold;
  font-size: 1rem;
  margin: 0.5rem 0;
  color: #00796b;
}
.book p.price del {
  color: #888;
  margin-right: 5px;
}
.book button {
  background-color: #00796b;
  border: none;
  color: white;
  padding: 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}
.book button:hover {
  background-color: #004d40;
}
/* Cart */
#cart {
  background: white;
  padding: 1rem;
  border-radius: 10px;
  max-width: 420px;
  position: fixed;
  top: 70px;
  right: 20px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
  display: none;
  flex-direction: column;
  z-index: 1000;
}
#cart h2 {
  margin-top: 0;
  color: #00796b;
  border-bottom: 2px solid #00796b;
  padding-bottom: 0.3rem;
}
#cart ul {
  list-style: none;
  padding-left: 0;
  max-height: 300px;
  overflow-y: auto;
  margin-bottom: 0.5rem;
}
#cart ul li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid #eee;
  padding: 0.3rem 0;
  font-size: 0.95rem;
}
#cart ul li button {
  background: #c62828;
  border: none;
  color: white;
  cursor: pointer;
  border-radius: 3px;
  padding: 0 6px;
}
#cart-total {
  font-weight: bold;
  text-align: right;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}
#cart-close {
  background: #00796b;
  color: white;
  border: none;
  cursor: pointer;
  padding: 0.4rem 0.8rem;
  border-radius: 5px;
  align-self: flex-end;
  font-weight: bold;
}
#payment-section label {
  display: block;
  margin: 0.5rem 0 0.2rem;
  font-weight: bold;
}
#payment-section input[type="text"],
#payment-section select {
  width: 100%;
  padding: 0.3rem 0.5rem;
  margin-bottom: 0.5rem;
  border-radius: 4px;
  border: 1px solid #ccc;
  box-sizing: border-box;
}
#payment-section .bank-details {
  display: none;
  margin-top: 0.5rem;
  background: #e0f2f1;
  padding: 0.5rem;
  border-radius: 6px;
}
#btn-checkout {
  background: #00796b;
  color: white;
  border: none;
  cursor: pointer;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  font-weight: bold;
  margin-top: 0.5rem;
}
#payment-summary {
  background: #d0f0e8;
  padding: 0.8rem;
  margin-top: 1rem;
  border-radius: 6px;
  display: none;
}
/* Banner */
#homepage-banner {
  background: linear-gradient(90deg,#ff3d00,#ff9100);
  padding: 25px 0;
  text-align: center;
  border-radius: 8px;
  margin: 15px 0;
  font-weight: bold;
}
#homepage-banner marquee {
  font-size: 2rem;
  text-shadow: 2px 2px 4px #000;
}
@keyframes flash {
  0%, 100% { color: #ff3d00; }
  50% { color: #ff9100; }
}
.flash-text {
  animation: flash 1s infinite;
}
.extra-section {
  margin-top: 40px;
}
.extra-section h2 {
  color: #00796b;
  font-size: 1.4rem;
  margin-bottom: 1rem;
}
.carousel-wrapper {
  position: relative;
}
.carousel-track {
  display: flex;
  gap: 1rem;
  overflow: hidden;
  scroll-behavior: smooth;
  padding-bottom: 6px;
}
.carousel-item {
  min-width: 220px;
  flex: 0 0 220px;
}
.carousel-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 6px;
  border: none;
  background: rgba(0,0,0,0.06);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}
.carousel-prev {
  left: -10px;
}
.carousel-next {
  right: -10px;
}
@media (max-width: 680px) {
  .carousel-item {
    min-width: 180px;
    flex: 0 0 180px;
  }
  .carousel-nav {
    display: none;
  }
}
/* Countdown timer */
#flash-sale-timer {
  font-size: 1.2rem;
  font-weight: bold;
  color: #e53935;
  margin-bottom: 1rem;
}
/* Footer */
footer {
  background-color: #004d40;
  color: white;
  padding: 30px 20px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.footer-grid h4 {
  color: #ffd54f;
  margin-bottom: 8px;
}
.footer-grid p,
.footer-grid a {
  color: #e0f2f1;
  text-decoration: none;
  font-size: 0.9rem;
}
.footer-grid ul {
  list-style: none;
  padding-left: 0;
}
.footer-grid ul li {
  margin-bottom: 5px;
}
.footer-grid ul li a:hover {
  text-decoration: underline;
}
.footer-bottom {
  text-align: center;
  margin-top: 20px;
  color: #c8e6c9;
  font-size: 0.9rem;
}
/* Hiệu ứng Mã nhị phân / Matrix khi click chuột */
@keyframes matrixFlyUp {
  0% {
    transform: translate(-50%, -50%) scale(0.6);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -180%) scale(1.2);
    opacity: 0;
  }
}
.matrix-code {
  position: fixed;
  pointer-events: none;
  font-family: 'Courier New', Courier, monospace;
  font-weight: bold;
  font-size: 16px;
  color: #00ff66; /* Màu xanh lá matrix cực ngầu */
  text-shadow: 0 0 8px #00ff66, 0 0 15px #00ff66; /* Hiệu ứng phát sáng neon */
  user-select: none;
  animation: matrixFlyUp 0.8s ease-out forwards;
  z-index: 9999;
}
/* Hiệu ứng mã nhị phân chạy theo rê chuột (Matrix Trail) */
@keyframes matrixTrailFade {
  0% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.9;
  }
  100% {
    transform: translate(-50%, -120%) scale(1.1);
    opacity: 0;
  }
}
.matrix-trail {
  position: fixed;
  pointer-events: none;
  font-family: 'Courier New', Courier, monospace;
  font-weight: bold;
  font-size: 13px;
  color: #00ff66;
  text-shadow: 0 0 6px #00ff66;
  user-select: none;
  animation: matrixTrailFade 0.5s ease-out forwards;
  z-index: 9998;
}
/* ===== Tùy chỉnh giao diện nút tăng giảm trong giỏ hàng ===== */
#cart ul li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #eee;
  padding: 0.5rem 0;
  font-size: 0.9rem;
}
.cart-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}
.cart-controls button {
  background: #00796b;
  border: none;
  color: white;
  cursor: pointer;
  border-radius: 3px;
  padding: 2px 8px;
  font-weight: bold;
  font-size: 0.85rem;
}
.cart-controls button.btn-remove {
  background: #c62828;
  margin-left: 4px;
}

/* Giới hạn độ rộng tối đa của các khu vực chính và căn giữa màn hình */
header, 
main, 
footer, 
.category-container { 
  max-width: 1200px; 
  margin-left: auto; 
  margin-right: auto; 
  box-sizing: border-box; 
}

.book-list, 
.carousel-container, 
.banner-container { 
  max-width: 1200px; 
  margin: 0 auto; 
}

/* ===== Giới hạn chiều rộng thanh banner màu đỏ ===== */
.banner, 
.banner-container, 
header + div { 
  max-width: 1200px !important; 
  margin-left: auto !important; 
  margin-right: auto !important; 
  border-radius: 8px; 
  overflow: hidden; 
}

/* 1. Nền tổng thể toàn trang  */
body { 
  background-color: #f4f6f8 !important; 
  color: #333; 
  margin: 0; 
  padding: 0; 
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
}

/* 2. màu thanh head*/
header { 
  background: linear-gradient(135deg, #d70018 0%, #b50013 100%) !important; 
  width: 100% !important; 
  display: flex !important; 
  flex-direction: row !important; 
  justify-content: space-between !important; 
  align-items: center !important; 
  padding: 12px 30px !important; 
  box-sizing: border-box; 
  box-shadow: 0 4px 12px rgba(215, 0, 24, 0.3); 
}

header div, 
header nav { 
  display: flex !important; 
  flex-direction: row !important; 
  align-items: center !important; 
  gap: 10px !important; 
}

/* 3. Các nút bấm, danh mục, giỏ hàng chuyển sang tone đỏ / trắng */
header button, 
header a, 
.category-btn { 
  background-color: rgba(255, 255, 255, 0.15); 
  color: #ffffff; 
  border: 1px solid rgba(255, 255, 255, 0.3); 
  padding: 8px 16px; 
  border-radius: 6px; 
  font-weight: 600; 
  transition: all 0.3s ease; 
  cursor: pointer; 
}

header button:hover, 
header a:hover, 
.category-btn:hover { 
  background-color: #ffffff; 
  color: #d70018; 
  border-color: #ffffff; 
}

#btn-cart { 
  background-color: #ffffff !important; 
  color: #d70018 !important; 
  font-weight: bold; 
}

/* 4. Khung chứa danh sách sản phẩm và nội dung chính */
main, 
.category-container { 
  max-width: 1200px !important; 
  margin: 20px auto !important; 
  background-color: #ffffff !important; 
  padding: 25px; 
  border-radius: 10px; 
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06); 
  box-sizing: border-box; 
}

/* 5. Nút "Thêm vào giỏ" bên trong các card sản phẩm chuyển sang màu đỏ nhận diện */
.book button, 
.book-list button { 
  background-color: #d70018 !important; 
  color: white !important; 
  border: none !important; 
  border-radius: 6px; 
  font-weight: bold; 
  transition: background 0.2s; 
}

.book button:hover, 
.book-list button:hover { 
  background-color: #b50013 !important; 
}

/* ===== ĐỒNG BỘ MÀU BANNER ===== */
.banner, 
.banner-container, 
header + div { 
  background: linear-gradient(135deg, #d70018 0%, #b50013 100%) !important; 
  color: #ffffff !important; 
  border: none !important; 
  box-shadow: 0 4px 15px rgba(215, 0, 24, 0.25); 
}

.banner span, 
.banner p, 
.banner h3, 
header + div p, 
header + div span { 
  color: #ffffff !important; 
  font-weight: 600; 
}

/* ===== TÙY CHỈNH TRẠNG THÁI ĐƯỢC CHỌN (ACTIVE) CHO MENU ===== */
header button.active, 
header a.active, 
.category-btn.active, 
header button:focus { 
  background-color: rgba(255, 255, 255, 0.25) !important; 
  color: #ffffff !important; 
  border: 1px solid #ffffff !important; 
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.3); 
}

header button[style*="background-color: rgb"], 
header .category-btn[style*="background"] { 
  background-color: rgba(255, 255, 255, 0.2) !important; 
  border-color: rgba(255, 255, 255, 0.4) !important; 
}

/* ===== Tăng khoảng cách giữa Logo và các nút Menu ===== */
header > div:first-child, 
header .logo-container, 
header img + div { 
  margin-right: 30px !important; 
}

header { 
  justify-content: flex-start !important; 
  gap: 40px !important; 
}

/* ===== TÙY CHỈNH PHÔNG CHỮ BANNER SIÊU SALE ===== */
.banner, 
.banner-container, 
header + div { 
  font-family: 'Montserrat', 'Segoe UI', Arial, sans-serif !important; 
  text-align: center; 
  padding: 12px 15px; 
  font-size: 1.1rem; 
  letter-spacing: 0.5px; 
}

.banner span, 
.banner b, 
.banner strong, 
header + div span, 
header + div b { 
  font-weight: 800 !important; 
  text-transform: uppercase; 
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3); 
  color: #fff !important; 
}

/* ===== LOGO TRONG SUỐT  ===== */
.custom-logo { 
  display: flex; 
  align-items: center; 
  gap: 8px; 
  background: transparent !important; 
  padding: 4px 8px; 
  cursor: pointer; 
}

.logo-icon { 
  font-size: 1.6rem; 
  filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.5)); 
}

.logo-text { 
  display: flex; 
  flex-direction: column; 
  line-height: 1; 
}

.logo-text .brand { 
  font-family: 'Segoe UI', sans-serif; 
  font-size: 1.4rem; 
  font-weight: 900; 
  color: #ffffff; 
  letter-spacing: 0.5px; 
  text-transform: uppercase; 
}

.logo-text .sub { 
  font-size: 0.9rem; 
  font-weight: 800; 
  color: #ffeb3b; 
  letter-spacing: 1px; 
}

/* ===== ĐƯA KHUNG GIỎ HÀNG VÀO TRONG KHUNG GIAO DIỆN CHÍNH ===== */
body { 
  position: relative !important; 
}

/* ===== NÚT ĐĂNG NHẬP HEADER ===== */
#btn-login { 
  background: transparent !important; 
  color: #ffffff !important; 
  border: 1px solid rgba(255, 255, 255, 0.8) !important; 
  padding: 8px 16px !important; 
  border-radius: 8px !important; 
  font-weight: 600 !important; 
  cursor: pointer !important; 
  font-size: 0.95rem !important; 
  transition: all 0.2s ease-in-out !important; 
  margin-left: 5px !important; 
}

#btn-login:hover { 
  background: rgba(255, 255, 255, 0.2) !important; 
  border-color: #ffffff !important; 
}

/* ===== ĐỔI NÚT GIỎ HÀNG SANG NỀN TRONG SUỐT ===== */
nav button, 
.category-btn, 
#btn-cart, 
#btn-login { 
  background: transparent !important; 
  color: #ffffff !important; 
  border: 1px solid rgba(255, 255, 255, 0.7) !important; 
  padding: 8px 16px !important; 
  border-radius: 8px !important; 
  font-size: 0.9rem !important; 
  font-weight: 700 !important; 
  font-family: inherit !important; 
  cursor: pointer !important; 
  display: inline-flex !important; 
  align-items: center !important; 
  justify-content: center !important; 
  line-height: 1.2 !important; 
  transition: all 0.2s ease-in-out !important; 
  box-sizing: border-box !important; 
}

nav button:hover, 
.category-btn:hover, 
#btn-cart:hover, 
#btn-login:hover { 
  background: rgba(255, 255, 255, 0.2) !important; 
  border-color: #ffffff !important; 
  color: #ffffff !important; 
}

.category-btn.active { 
  background: rgba(255, 255, 255, 0.25) !important; 
  border-color: #ffffff !important; 
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.3) !important; 
}

/* ===== POPUP ĐĂNG NHẬP (CELLPHONES STYLE) ===== */
.auth-overlay { 
  display: none; 
  position: fixed !important; 
  top: 0 !important; 
  left: 0 !important; 
  width: 100vw !important; 
  height: 100vh !important; 
  background: rgba(0, 0, 0, 0.6) !important; 
  backdrop-filter: blur(3px) !important; 
  z-index: 999999 !important; 
  align-items: center !important; 
  justify-content: center !important; 
}

.auth-overlay.active { 
  display: flex !important; 
}

.auth-box { 
  background: #ffffff !important; 
  width: 90% !important; 
  max-width: 420px !important; 
  border-radius: 16px !important; 
  padding: 25px 20px !important; 
  position: relative !important; 
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3) !important; 
  text-align: center !important; 
  animation: popupFadeIn 0.25s ease-out !important; 
}

@keyframes popupFadeIn { 
  from { transform: scale(0.85); opacity: 0; } 
  to { transform: scale(1); opacity: 1; } 
}

.auth-close { 
  position: absolute !important; 
  top: 12px !important; 
  right: 15px !important; 
  background: #e0e0e0 !important; 
  border: none !important; 
  width: 28px !important; 
  height: 28px !important; 
  border-radius: 50% !important; 
  font-size: 18px !important; 
  color: #666 !important; 
  cursor: pointer !important; 
  display: flex !important; 
  align-items: center !important; 
  justify-content: center !important; 
}

.auth-close:hover { 
  background: #d70018 !important; 
  color: #ffffff !important; 
}

.auth-logo { 
  font-size: 1.4rem !important; 
  font-weight: 800 !important; 
  color: #d70018 !important; 
  margin-bottom: 8px !important; 
}

.auth-desc { 
  font-size: 0.9rem !important; 
  color: #555 !important; 
  line-height: 1.4 !important; 
  margin-bottom: 18px !important; 
}

.auth-form { 
  display: flex !important; 
  flex-direction: column !important; 
  gap: 10px !important; 
  margin-bottom: 20px !important; 
}

.auth-form input { 
  width: 100% !important; 
  padding: 11px 14px !important; 
  border: 1px solid #ddd !important; 
  border-radius: 8px !important; 
  font-size: 0.95rem !important; 
  outline: none !important; 
  box-sizing: border-box !important; 
}

.auth-form input:focus { 
  border-color: #d70018 !important; 
}

.auth-actions { 
  display: flex !important; 
  gap: 12px !important; 
}

.btn-auth-register, 
.btn-auth-login { 
  flex: 1 !important; 
  padding: 12px 0 !important; 
  border-radius: 8px !important; 
  font-weight: 700 !important; 
  font-size: 0.95rem !important; 
  cursor: pointer !important; 
  transition: all 0.2s !important; 
}

.btn-auth-register { 
  background: #ffffff !important; 
  color: #d70018 !important; 
  border: 1.5px solid #d70018 !important; 
}

.btn-auth-register:hover { 
  background: #fff0f0 !important; 
}

.btn-auth-login { 
  background: #d70018 !important; 
  color: #ffffff !important; 
  border: none !important; 
}

.btn-auth-login:hover { 
  background: #b50014 !important; 
}

/* ===== POPUP GIỎ HÀNG BÊN PHẢI ===== */
#cart { 
  display: none !important; 
  position: absolute !important; 
  right: calc((100% - 1200px) / 2) !important; 
  top: 140px !important; 
  width: 380px !important; 
  background: #ffffff !important; 
  border-radius: 10px !important; 
  padding: 20px !important; 
  border: 1px solid #d70018 !important; 
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.2) !important; 
  z-index: 99999 !important; 
  box-sizing: border-box !important; 
}

#cart.active { 
  display: flex !important; 
  flex-direction: column !important; 
  gap: 15px !important; 
}

@media (max-width: 1240px) { 
  #cart { right: 20px !important; } 
}

#cart h2 { 
  margin: 0 !important; 
  font-size: 1.3rem !important; 
  color: #d70018 !important; 
  border-bottom: 2px solid #d70018 !important; 
  padding-bottom: 8px !important; 
}

#cart-total { 
  position: relative !important; 
  left: auto !important; 
  right: auto !important; 
  top: auto !important; 
  width: 100% !important; 
  font-weight: bold !important; 
  font-size: 1.1rem !important; 
  color: #d70018 !important; 
  padding: 10px !important; 
  background: #fff5f5 !important; 
  border-radius: 6px !important; 
  border: 1px dashed #feb2b2 !important; 
  box-sizing: border-box !important; 
  margin: 0 !important; 
}

#cart-close { 
  position: relative !important; 
  left: auto !important; 
  right: auto !important; 
  bottom: auto !important; 
  background: #6c757d !important; 
  color: white !important; 
  border: none !important; 
  padding: 8px 16px !important; 
  border-radius: 6px !important; 
  font-weight: bold !important; 
  cursor: pointer !important; 
  align-self: flex-end !important; 
  margin-top: 5px !important; 
}

#cart-items { 
  list-style: none !important; 
  padding: 0 !important; 
  margin: 0 !important; 
  max-height: 250px !important; 
  overflow-y: auto !important; 
}

#cart-items li { 
  display: flex !important; 
  justify-content: space-between !important; 
  align-items: center !important; 
  padding: 10px 0 !important; 
  border-bottom: 1px solid #eee !important; 
  font-size: 0.95rem !important; 
  gap: 10px !important;
}

.cart-controls button { 
  background: #00796b !important; 
  border: none !important; 
  color: white !important; 
  cursor: pointer !important; 
  border-radius: 3px !important; 
  padding: 4px 10px !important; 
  font-weight: bold !important; 
}

.cart-controls button.btn-remove { 
  background: #c62828 !important; 
}

#payment-section { 
  display: flex !important; 
  flex-direction: column !important; 
  gap: 10px !important; 
  border-top: 1px solid #eee !important; 
  padding-top: 15px !important; 
}

#payment-section label { 
  font-weight: bold !important; 
  font-size: 0.95rem !important; 
}

#payment-section select, 
#payment-section input { 
  width: 100% !important; 
  padding: 8px 12px !important; 
  border-radius: 6px !important; 
  border: 1px solid #ccc !important; 
  box-sizing: border-box !important; 
}

#btn-checkout { 
  background: #d70018 !important; 
  color: white !important; 
  border: none !important; 
  padding: 10px !important; 
  border-radius: 6px !important; 
  font-weight: bold !important; 
  cursor: pointer !important; 
  width: 100% !important; 
}

/* ===== ĐỒNG BỘ NÚT CHUYỂN SLIDE (TẤM LÓT TRÒN NỔI BẬT 2 BÊN) ===== */
.carousel-container, 
.carousel-wrapper, 
.book-list-container { 
  position: relative !important; 
}

.carousel-btn, 
.carousel-prev, 
.carousel-next, 
.prev-btn, 
.next-btn, 
button.prev, 
button.next { 
  position: absolute !important; 
  top: 50% !important; 
  transform: translateY(-50%) !important; 
  width: 44px !important; 
  height: 44px !important; 
  background: #ffffff !important; 
  color: #d70018 !important; 
  border: 1.5px solid #f0f0f0 !important; 
  border-radius: 50% !important; 
  font-size: 20px !important; 
  font-weight: 800 !important; 
  display: flex !important; 
  align-items: center !important; 
  justify-content: center !important; 
  cursor: pointer !important; 
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2) !important; 
  z-index: 99 !important; 
  transition: all 0.25s ease-in-out !important; 
  opacity: 1 !important; 
  visibility: visible !important; 
}

.carousel-btn:hover, 
.carousel-prev:hover, 
.carousel-next:hover, 
.prev-btn:hover, 
.next-btn:hover, 
button.prev:hover, 
button.next:hover { 
  background-color: #d70018 !important; 
  color: #ffffff !important; 
  border-color: #d70018 !important; 
  transform: translateY(-50%) scale(1.1) !important; 
  box-shadow: 0 6px 16px rgba(215, 0, 24, 0.4) !important; 
}

.carousel-prev, 
.prev-btn, 
button.prev { 
  left: 8px !important; 
}

.carousel-next, 
.next-btn, 
button.next { 
  right: 8px !important; 
}

/* ===== TRANG ĐĂNG KÝ NLL MEMBER ===== */
body.register-page { 
  background-color: #f4f6f8 !important; 
  font-family: inherit !important; 
  display: flex !important; 
  justify-content: center !important; 
  align-items: center !important; 
  min-height: 100vh !important; 
  margin: 0 !important; 
  padding: 30px 15px !important; 
  box-sizing: border-box !important; 
}

.reg-container { 
  background: #ffffff !important; 
  width: 100% !important; 
  max-width: 680px !important; 
  padding: 35px 40px !important; 
  border-radius: 16px !important; 
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.08) !important; 
  box-sizing: border-box !important; 
}

.reg-main-title { 
  color: #d70018 !important; 
  font-size: 1.8rem !important; 
  font-weight: 800 !important; 
  text-align: center !important; 
  margin-top: 0 !important; 
  margin-bottom: 10px !important; 
}

.reg-logo-box { 
  text-align: center !important; 
  margin-bottom: 25px !important; 
}

.reg-section-title { 
  font-size: 1.05rem !important; 
  font-weight: 700 !important; 
  color: #333333 !important; 
  margin-bottom: 12px !important; 
}

.reg-grid { 
  display: grid !important; 
  grid-template-columns: 1fr 1fr !important; 
  gap: 15px !important; 
}

@media (max-width: 600px) { 
  .reg-grid { grid-template-columns: 1fr !important; } 
}

.reg-group { 
  display: flex !important; 
  flex-direction: column !important; 
  gap: 6px !important; 
}

.reg-group label { 
  font-size: 0.85rem !important; 
  font-weight: 600 !important; 
  color: #555555 !important; 
}

.reg-group input { 
  padding: 10px 14px !important; 
  border: 1px solid #cccccc !important; 
  border-radius: 8px !important; 
  font-size: 0.95rem !important; 
  outline: none !important; 
  box-sizing: border-box !important; 
  width: 100% !important; 
  transition: border-color 0.2s !important; 
}

.reg-group input:focus { 
  border-color: #d70018 !important; 
}

.reg-terms { 
  font-size: 0.82rem !important; 
  color: #666666 !important; 
  margin-top: 20px !important; 
  margin-bottom: 25px !important; 
  line-height: 1.4 !important; 
}

.reg-terms a { 
  color: #0071e3 !important; 
  text-decoration: none !important; 
}

.reg-actions { 
  display: flex !important; 
  gap: 15px !important; 
}

.btn-reg-back { 
  flex: 1 !important; 
  display: inline-flex !important; 
  align-items: center !important; 
  justify-content: center !important; 
  padding: 12px 0 !important; 
  border: 1px solid #d0d0d0 !important; 
  border-radius: 8px !important; 
  background: #ffffff !important; 
  color: #333333 !important; 
  text-decoration: none !important; 
  font-weight: 700 !important; 
  font-size: 0.95rem !important; 
  transition: background 0.2s !important; 
}

.btn-reg-back:hover { 
  background: #f0f0f0 !important; 
}

.btn-reg-submit { 
  flex: 1 !important; 
  padding: 12px 0 !important; 
  border: none !important; 
  border-radius: 8px !important; 
  background: #d70018 !important; 
  color: #ffffff !important; 
  font-weight: 700 !important; 
  font-size: 0.95rem !important; 
  cursor: pointer !important; 
  transition: background 0.2s !important; 
}

.btn-reg-submit:hover { 
  background: #b50014 !important; 
}

/* ===== ĐỊNH DẠNG LINK GOOGLE MAPS Ở FOOTER ===== */
.footer-map-link { 
  color: inherit !important; 
  text-decoration: underline !important; 
  font-weight: 600 !important; 
  transition: color 0.2s ease-in-out !important; 
}

.footer-map-link:hover { 
  color: #ffcc00 !important; 
}

.footer-map-link, 
.footer-map-link:visited { 
  color: #ffffff !important; 
  text-decoration: none !important; 
  font-weight: 400 !important; 
  cursor: pointer !important; 
  transition: all 0.2s ease-in-out !important; 
}

.footer-map-link:hover { 
  text-decoration: underline !important; 
  color: #ffffff !important; 
}