:root {
    --primary-blue: #023e8a;
    --primary-blue-hover: #03045e;
    --brand-orange: #f26f21;
    --brand-orange-hover: #d95e1a;
    --bg-light-gray: #f8fafc;
    --bg-white: #ffffff;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --text-light-gray: #cbd5e1;
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.05), 0 4px 6px -4px rgb(0 0 0 / 0.05);
    --shadow-hover: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-light-gray);
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.01em;
}

a {
    text-decoration: none;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.text-primary { color: var(--primary-blue) !important; }
.text-orange { color: var(--brand-orange) !important; }
.bg-primary { background-color: var(--primary-blue) !important; }
.bg-orange { background-color: var(--brand-orange) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-light-gray { color: var(--text-light-gray) !important; }

.top-bar {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
}

.top-bar i { color: var(--brand-orange); }

.main-header {
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    z-index: 1020;
}

.search-wrapper {
    position: relative;
}

.search-wrapper .form-control {
    background-color: var(--bg-light-gray);
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.search-wrapper .form-control:focus {
    background-color: var(--bg-white);
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(2, 62, 138, 0.1);
}

.search-wrapper i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    z-index: 4;
}

.btn-cart {
    background-color: var(--brand-orange);
    color: var(--bg-white);
    border-radius: 8px;
    padding: 0.6rem 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.btn-cart:hover {
    background-color: var(--brand-orange-hover);
    color: var(--bg-white);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.nav-category {
    background-color: var(--primary-blue);
}

.nav-category .nav-link {
    color: var(--bg-white);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 1rem 1.25rem;
    opacity: 0.9;
}

.nav-category .nav-link:hover {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.1);
}

.breadcrumb {
    font-size: 0.85rem;
    font-weight: 500;
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary-blue); }
.breadcrumb-item.active { color: var(--text-dark); font-weight: 600; }
.breadcrumb-item+.breadcrumb-item::before { content: "\f105"; font-family: "Font Awesome 6 Free"; font-weight: 900; color: var(--text-light-gray); font-size: 0.75rem; vertical-align: middle;}

.filter-sidebar {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

.filter-sidebar::-webkit-scrollbar { width: 6px; }
.filter-sidebar::-webkit-scrollbar-track { background: transparent; }
.filter-sidebar::-webkit-scrollbar-thumb { background-color: var(--border-color); border-radius: 10px; }

.category-tree ul { padding-left: 0; list-style: none; }
.category-tree a { color: var(--text-muted); font-size: 0.9rem; display: block; padding: 0.25rem 0; }
.category-tree a:hover { color: var(--text-dark); }
.category-tree .active-node { color: var(--brand-orange) !important; font-weight: 600; }
.category-tree .nested { margin-left: 1rem; border-left: 2px solid var(--border-color); padding-left: 1rem; }
.category-tree .nested-active { border-left-color: var(--brand-orange); }

.filter-group { border-bottom: 1px solid var(--border-color); padding: 1.25rem 0; }
.filter-group:last-child { border-bottom: none; padding-bottom: 0; }
.filter-title { font-weight: 700; font-size: 0.95rem; margin-bottom: 1rem; color: var(--text-dark); display: flex; justify-content: space-between; align-items: center; cursor: pointer; }

.custom-checkbox { display: flex; align-items: center; margin-bottom: 0.6rem; }
.custom-checkbox .form-check-input { width: 1.1rem; height: 1.1rem; margin-top: 0; border-color: var(--border-hover); border-radius: 4px; cursor: pointer; }
.custom-checkbox .form-check-input:checked { background-color: var(--brand-orange); border-color: var(--brand-orange); box-shadow: none; }
.custom-checkbox .form-check-input:focus { box-shadow: 0 0 0 3px rgba(242, 111, 33, 0.2); }
.custom-checkbox .form-check-label { width: 100%; display: flex; justify-content: space-between; margin-left: 0.5rem; font-size: 0.875rem; color: var(--text-dark); cursor: pointer; }
.custom-checkbox .count { color: var(--text-muted); font-size: 0.8rem; }

.btn-link-sm { color: var(--primary-blue); font-size: 0.85rem; font-weight: 500; padding: 0; text-decoration: none; display: inline-flex; align-items: center; gap: 0.25rem; }
.btn-link-sm:hover { color: var(--primary-blue-hover); text-decoration: underline; }

.price-slider-ui { margin: 1rem 0; padding: 0 0.5rem; }
.slider-track { height: 4px; background-color: var(--border-color); border-radius: 2px; position: relative; }
.slider-fill { position: absolute; height: 100%; background-color: var(--brand-orange); border-radius: 2px; left: 0; width: 100%; }
.slider-thumb { width: 16px; height: 16px; background-color: var(--brand-orange); border: 2px solid var(--bg-white); border-radius: 50%; position: absolute; top: 50%; transform: translate(-50%, -50%); box-shadow: var(--shadow-sm); cursor: pointer; }

.price-inputs { display: flex; gap: 0.5rem; align-items: center; }
.price-inputs .input-group { background-color: var(--bg-light-gray); border-radius: 6px; overflow: hidden; border: 1px solid var(--border-color); }
.price-inputs .input-group-text { background: transparent; border: none; padding: 0.4rem 0.6rem; color: var(--text-muted); font-size: 0.85rem; }
.price-inputs .form-control { background: transparent; border: none; padding: 0.4rem 0.6rem 0.4rem 0; font-size: 0.85rem; font-weight: 500; color: var(--text-dark); box-shadow: none; }

.toolbar { background-color: var(--bg-white); border: 1px solid var(--border-color); border-radius: 12px; padding: 1rem 1.5rem; display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; box-shadow: var(--shadow-sm); }
.sort-select { background-color: var(--bg-light-gray); border: 1px solid var(--border-color); border-radius: 8px; padding: 0.5rem 2rem 0.5rem 1rem; font-size: 0.9rem; font-weight: 500; color: var(--text-dark); cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%2364748b' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.75rem center; background-size: 16px 12px; }
.sort-select:focus { outline: none; border-color: var(--primary-blue); box-shadow: 0 0 0 3px rgba(2, 62, 138, 0.1); }

.product-card { background-color: var(--bg-white); border: 1px solid var(--border-color); border-radius: 12px; display: flex; flex-direction: column; height: 100%; transition: all 0.3s ease; position: relative; overflow: hidden; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--border-hover); z-index: 2; }

.card-image-wrapper { height: 220px; padding: 1.5rem; display: flex; align-items: center; justify-content: center; position: relative; background-color: #fff; border-bottom: 1px solid var(--bg-light-gray); }
.card-image-wrapper img { max-width: 100%; max-height: 100%; object-fit: contain; transition: transform 0.4s ease; }
.product-card:hover .card-image-wrapper img { transform: scale(1.05); }

.badges { position: absolute; top: 1rem; left: 1rem; display: flex; flex-direction: column; gap: 0.4rem; z-index: 2; }
.badge-custom { padding: 0.35rem 0.6rem; border-radius: 6px; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; box-shadow: var(--shadow-sm); }
.badge-sale { background-color: var(--danger-color); color: white; }
.badge-stock { background-color: var(--success-color); color: white; }

.card-content { padding: 1.5rem; display: flex; flex-direction: column; flex-grow: 1; }
.product-brand { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 0.4rem; display: block; }
.product-title { font-size: 1rem; font-weight: 600; color: var(--text-dark); line-height: 1.4; margin-bottom: 1rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; height: 2.8rem; }

.delivery-info { display: flex; align-items: center; gap: 0.4rem; font-size: 0.8rem; font-weight: 500; color: var(--success-color); margin-bottom: 1rem; }
.delivery-info.delayed { color: var(--brand-orange); }

.card-footer-custom { margin-top: auto; display: flex; flex-direction: column; gap: 1rem; }
.price-wrapper { display: flex; flex-direction: column; }
.price-main { font-size: 1.5rem; font-weight: 800; color: var(--text-dark); line-height: 1; }
.price-main.discounted { color: var(--danger-color); }
.price-old { font-size: 0.9rem; font-weight: 500; color: var(--text-muted); text-decoration: line-through; margin-bottom: 0.2rem; }
.price-tax { font-size: 0.7rem; color: var(--text-muted); margin-top: 0.2rem; }

.btn-add { background-color: var(--bg-white); border: 1px solid var(--border-color); color: var(--primary-blue); border-radius: 8px; padding: 0.6rem; font-weight: 600; font-size: 0.9rem; transition: all 0.2s ease; display: flex; justify-content: center; align-items: center; gap: 0.5rem; width: 100%; }
.btn-add:hover { background-color: var(--primary-blue); border-color: var(--primary-blue); color: var(--bg-white); }

.pagination-container { display: flex; justify-content: center; margin-top: 3rem; margin-bottom: 4rem; }
.pagination-custom { display: flex; gap: 0.4rem; list-style: none; padding: 0; margin: 0; }
.pagination-custom li a { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 8px; border: 1px solid var(--border-color); background-color: var(--bg-white); color: var(--text-dark); font-weight: 500; font-size: 0.9rem; }
.pagination-custom li a:hover { border-color: var(--primary-blue); color: var(--primary-blue); }
.pagination-custom li.active a { background-color: var(--primary-blue); border-color: var(--primary-blue); color: var(--bg-white); }
.pagination-custom li.disabled a { opacity: 0.5; cursor: not-allowed; background-color: var(--bg-light-gray); border-color: var(--border-color); }

footer { background-color: #0f172a; color: #94a3b8; }
footer h5 { color: white; font-weight: 600; font-size: 1.1rem; margin-bottom: 1.25rem; }
footer ul { padding: 0; list-style: none; }
footer ul li { margin-bottom: 0.75rem; }
footer ul li a { color: #94a3b8; font-size: 0.9rem; }
footer ul li a:hover { color: white; padding-left: 4px; }
.footer-bottom { border-top: 1px solid #1e293b; padding-top: 1.5rem; margin-top: 3rem; display: flex; justify-content: space-between; align-items: center; font-size: 0.85rem; }
.payment-methods { display: flex; gap: 0.5rem; }
.payment-methods img { height: 24px; border-radius: 4px; background: white; padding: 2px; }