:root {
    --primary-color: #2563eb;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: #fcfcfd;
    color: #1a1a1a;
    overflow-x: hidden;
}

.navbar {
    border-bottom: 1px solid #eee;
}

.hero-section {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    padding: 60px 0;
    border-radius: 0 0 40px 40px;
}

.card-product {
    border: 1px solid #f0f0f0;
    border-radius: 20px;
    transition: all 0.3s ease;
    background: #fff;
}

.card-product:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05);
}

/* Ảnh sản phẩm fix lỗi contain */
.card-img-top {
    height: 200px;
    width: 100%;
    object-fit: contain;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 20px 20px 0 0;
}

/* Tối ưu Mobile */
@media (max-width: 767.98px) {
    .hero-section {
        padding: 30px 0;
        border-radius: 0 0 20px 20px;
    }

    /* Danh sách chính hiện 2 cột */
    .col-main {
        flex: 0 0 50%;
        max-width: 50%;
        padding: 5px !important;
    }

    .card-img-top {
        height: 140px;
        padding: 10px;
    }

    .card-body {
        padding: 10px !important;
    }

    .card-body h6 {
        font-size: 0.85rem;
        height: 2.5rem;
        overflow: hidden;
    }

    /* Cuộn ngang cho Bán chạy */
    .mobile-scroll-row {
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        padding-bottom: 15px;
    }

    .col-best-seller {
        flex: 0 0 75%;
        max-width: 75%;
        scroll-snap-align: start;
    }

    .mobile-scroll-row::-webkit-scrollbar {
        display: none;
    }
}

/* Premium Pagination Styling */
.pagination-premium {
    gap: 8px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    justify-content: center;
}

.pagination-premium .page-link {
    border: none;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px !important;
    background: #fff;
    color: #4b5563;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.pagination-premium .page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1d4ed8 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transform: scale(1.05);
}

.pagination-premium .page-link:hover:not(.active) {
    background-color: #f3f4f6;
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

.pagination-premium .page-item.disabled .page-link {
    background: transparent;
    opacity: 0.5;
    color: #9ca3af;
}

@media (max-width: 575.98px) {
    .pagination-premium .page-link {
        width: 36px;
        height: 36px;
        padding: 0;
        font-size: 0.9rem;
    }

    .pagination-premium {
        gap: 4px;
        padding: 6px;
    }
}

.modal-backdrop.show {
    opacity: 0.7;
    backdrop-filter: blur(5px);
}

/* Cụm nút nổi ở góc phải dưới.
           Dùng flex theo cột để nút hỗ trợ nằm gần nút "lên đầu trang". */
.floating-action-group {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
}

/* Nút mở chăm sóc khách hàng.
           Thiết kế bo tròn dạng pill để dễ thấy hơn nút cuộn trang. */
.customer-care-trigger {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border: none;
    border-radius: 999px;
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 12px 28px rgba(249, 115, 22, 0.28);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.customer-care-trigger:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 30px rgba(249, 115, 22, 0.35);
    color: #fff;
}

.btn-back-to-top {
    display: none;
    align-items: center;
    justify-content: center;
    /* Mặc định ẩn, sẽ hiện khi cuộn xuống */
    width: 45px;
    height: 45px;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    border: none;
    background-color: var(--primary-color);
    /* Sử dụng màu xanh bạn đã định nghĩa */
}

.btn-back-to-top:hover {
    transform: translateY(-5px);
    background-color: #1d4ed8;
    /* Màu đậm hơn khi hover */
    color: white;
}

/* Tối ưu cho mobile: nút nhỏ hơn một chút và dịch lên trên để tránh đè thanh điều hướng trình duyệt */
@media (max-width: 575.98px) {
    .floating-action-group {
        right: 15px;
        bottom: 20px;
    }

    .btn-back-to-top {
        width: 40px;
        height: 40px;
    }

    .customer-care-trigger {
        padding: 11px 14px;
        font-size: 0.92rem;
    }
}



/* Chiều cao và hiệu ứng lớp phủ */
.banner-overlay {
    height: 500px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    display: flex;
    align-items: center;
    /* Lớp phủ tối để nổi bật chữ trắng */
    background-color: rgba(0, 0, 0, 0.4);
    background-blend-mode: overlay;
}

/* Hiệu ứng chữ xuất hiện mượt mà */
.banner-content {
    animation: fadeInUp 0.8s ease-in-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tối ưu cho Mobile */
@media (max-width: 767.98px) {
    .banner-overlay {
        height: 350px;
        /* Thấp hơn trên mobile */
        text-align: center;
    }

    .carousel-inner {
        border-radius: 0 0 20px 20px !important;
    }

    .banner-overlay h1 {
        font-size: 1.8rem;
    }

    .banner-overlay p {
        font-size: 0.9rem;
    }

    .carousel-indicators {
        bottom: 10px;
    }
}

.auth-buttons a:hover {
    color: #b94a1a !important;
    /* Màu đỏ đặc trưng */
    transition: 0.3s;
}


/* Đảm bảo navbar-brand không chiếm hết chỗ */
.navbar-brand {
    flex-shrink: 0;
}

/* Hiệu ứng khi rê chuột vào nút đăng nhập */
.hover-orange:hover {
    background-color: #fff3e6;
    color: #ff6600 !important;
    transition: 0.3s;
}

/* Fix lỗi hiển thị Flexbox của Bootstrap trên một số trình duyệt */
@media (min-width: 992px) {
    .navbar-collapse {
        flex-grow: 1;
    }
}

/* Căn chỉnh form tìm kiếm mượt hơn */
.input-group .form-control:focus {
    box-shadow: none;
    border-color: #dee2e6;
    background-color: #fff;
}


.navbar .navbar-toggler,
.navbar .btn-outline-dark.position-relative,
.navbar .auth-buttons .dropdown-toggle,
.navbar .auth-buttons>a {
    outline: none;
    box-shadow: none;
}

.navbar .navbar-toggler {
    border: none !important;
    background: transparent !important;
    padding: 0.25rem 0.35rem !important;
}

.navbar .navbar-toggler .navbar-toggler-icon {
    background-size: 1.5rem;
}

.mobile-menu {
    --bs-offcanvas-width: 100%;
    width: 100%;
    max-width: 360px;
}

@media (max-width: 575.98px) {
    .mobile-menu {
        max-width: 100vw;
    }
}

.mobile-menu .offcanvas-header {
    padding: 1rem 1.25rem;
}

.mobile-menu .offcanvas-title {
    font-size: 1rem;
    letter-spacing: 0.02em;
}

.mobile-menu .offcanvas-body {
    background-color: #fff;
}

.mobile-menu .list-group-item {
    border: 0;
    padding-left: 1.5rem;
    padding-right: 1.25rem;
    transition: background-color 0.2s ease;
}

.mobile-menu .list-group-item:hover {
    background-color: #f8f9fa;
}

.mobile-menu .list-group-item a {
    display: block;
    width: 100%;
    color: #343a40;
}

.mobile-menu .btn-outline-dark {
    min-width: 110px;
}

.navbar .navbar-toggler:focus,
.navbar .navbar-toggler:active,
.navbar .navbar-toggler.show,
.navbar .btn-outline-dark.position-relative:focus,
.navbar .btn-outline-dark.position-relative:active,
.navbar .auth-buttons .dropdown-toggle:focus,
.navbar .auth-buttons .dropdown-toggle:active,
.navbar .auth-buttons>a:focus,
.navbar .auth-buttons>a:active {
    outline: none;
    box-shadow: none !important;
    border-color: transparent !important;
    background: transparent !important;
}

.navbar .navbar-toggler:focus-visible,
.navbar .btn-outline-dark.position-relative:focus-visible,
.navbar .auth-buttons .dropdown-toggle:focus-visible,
.navbar .auth-buttons>a:focus-visible {
    box-shadow: 0 0 0 0.2rem rgba(255, 102, 0, 0.18);
    border-radius: 14px;
}

/* ==========================================================================
   PREMIUM DESIGN SYSTEM
   ========================================================================== */

/* --- Stepper --- */
.checkout-stepper {
    display: flex !important;
    justify-content: space-between !important;
    margin-bottom: 40px !important;
    position: relative !important;
    width: 100%;
}

.checkout-stepper::before {
    content: "";
    position: absolute;
    top: 15px;
    left: 0;
    right: 0;
    height: 2px;
    background: #e5e7eb;
    z-index: 1;
}

.step-item {
    position: relative;
    z-index: 2;
    background: #fcfcfd;
    padding: 0 15px;
    text-align: center;
    flex: 1;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid #e5e7eb;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin: 0 auto 8px !important;
    font-weight: 700;
    font-size: 14px;
    color: #9ca3af;
    transition: all 0.3s ease;
}

.step-item.active .step-number {
    border-color: var(--primary-color) !important;
    background: var(--primary-color) !important;
    color: #fff !important;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.step-item.completed .step-number {
    border-color: #10b981 !important;
    background: #10b981 !important;
    color: #fff !important;
}

.step-label {
    font-size: 13px;
    font-weight: 600;
    color: #6b7280;
    display: block !important;
}

.step-item.active .step-label {
    color: var(--primary-color) !important;
}

/* --- Cards & Glassmorphism --- */
.glass-effect {
    background: rgba(255, 255, 255, 0.7) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
}

.card-premium {
    border: none;
    border-radius: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
    background: #fff;
}

/* --- Payment Options --- */
.payment-option-item {
    border: 2px solid #f1f5f9;
    border-radius: 16px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    background: #fff;
}
.payment-option-item:hover {
    border-color: #cbd5e1;
    transform: translateY(-2px);
}
.payment-option-item.active {
    border-color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.02);
}
.payment-option-item .check-icon {
    position: absolute;
    top: 12px;
    right: 12px;
    color: var(--primary-color);
    display: none;
    font-size: 1.2rem;
}
.payment-option-item.active .check-icon {
    display: block;
}

/* --- Admin Dashboard UI --- */
.admin-table thead th {
    background: #f8fafc;
    border-top: none;
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: #64748b;
    padding: 15px 20px;
}

.admin-table tbody td {
    padding: 18px 20px;
    vertical-align: middle;
    border-bottom: 1px solid #f1f5f9;
}

.badge-premium {
    padding: 6px 12px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.75rem;
}

.badge-soft-success { background: #dcfce7; color: #15803d; }
.badge-soft-warning { background: #fef9c3; color: #854d0e; }
.badge-soft-danger { background: #fee2e2; color: #b91c1c; }
.badge-soft-info { background: #e0f2fe; color: #0369a1; }
.badge-soft-secondary { background: #f1f5f9; color: #475569; }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fw-800 { font-weight: 800; }