/* ============================================
   SLOXLY PLATFORM - Main User Stylesheet
   All colors use CSS variables from database
   ============================================ */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ============================================
   CSS RESET & BASE
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-family, 'Inter', sans-serif);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--link);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--link-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul,
ol {
    list-style: none;
}

::selection {
    background: var(--primary);
    color: var(--btn-text);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-fluid {
    width: 100%;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.section-sm {
    padding: 48px 0;
}

.grid {
    display: grid;
    gap: 24px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.flex-col {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.gap-8 {
    gap: 8px;
}

.gap-12 {
    gap: 12px;
}

.gap-16 {
    gap: 16px;
}

.gap-24 {
    gap: 24px;
}

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

.text-right {
    text-align: right;
}

.text-secondary {
    color: var(--text-secondary);
}

.text-primary {
    color: var(--primary);
}

.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.text-warning {
    color: var(--warning);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.1rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 40px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: 12px 0 12px 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--btn-text);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.25);
    color: var(--btn-text);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--card);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-accent {
    background: var(--accent);
    color: var(--btn-text);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 206, 201, 0.4);
}

.btn-danger {
    background: var(--danger);
    color: var(--btn-text);
}

.btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    background: var(--surface);
    border-color: var(--primary);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
    border-radius: 8px 0 8px 8px;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
    border-radius: 14px 0 14px 14px;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 10px 0 10px 10px;
}

.btn-block {
    width: 100%;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px 0 16px 16px;
    padding: 24px;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.card-flat {
    border-radius: 16px 0 16px 16px;
    background: var(--card);
    padding: 24px;
    border: 1px solid var(--border);
}

.card-flat:hover {
    transform: none;
    box-shadow: none;
}

/* Product Card */
.product-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px 0 16px 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.product-card:hover {
    border-color: var(--primary);
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.product-card .product-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.product-card .product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-card .product-image .overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 16px;
    gap: 8px;
}

.product-card:hover .product-image .overlay {
    opacity: 1;
}

.product-card .product-body {
    padding: 20px;
}

.product-card .product-category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--primary);
    margin-bottom: 8px;
}

.product-card .product-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-card .product-title a {
    color: var(--text);
}

.product-card .product-title a:hover {
    color: var(--primary);
}

.product-card .product-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.product-card .product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.product-card .product-price {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--primary);
}

.product-card .product-seller {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.product-card .product-seller img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px 0 12px 12px;
    transition: all 0.3s ease;
    outline: none;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.form-control::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Password Box & Toggle */
.password-box {
    position: relative;
}

.password-box .form-control {
    padding-right: 48px;
}

.password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: all 0.3s ease;
    z-index: 5;
}

.password-toggle:hover {
    color: var(--primary);
}

.password-toggle i {
    width: 18px;
    height: 18px;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23A0A0C0' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 6px;
}

.form-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: 6px;
}

.input-group {
    display: flex;
    align-items: stretch;
}

.input-group .form-control {
    border-radius: 12px 0 0 12px;
}

.input-group .btn {
    border-radius: 0 12px 12px 0;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-primary {
    background: rgba(0, 0, 0, 0.1);
    color: var(--primary);
}

.badge-success {
    background: rgba(0, 184, 148, 0.15);
    color: var(--success);
}

.badge-warning {
    background: rgba(253, 203, 110, 0.15);
    color: var(--warning);
}

.badge-danger {
    background: rgba(255, 107, 107, 0.15);
    color: var(--danger);
}

.badge-info {
    background: rgba(116, 185, 255, 0.15);
    color: var(--info);
}

.badge-secondary {
    background: rgba(160, 160, 192, 0.15);
    color: var(--text-secondary);
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-radius: 12px 0 12px 12px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    animation: slideDown 0.3s ease;
    position: relative;
}

.alert-success {
    background: rgba(0, 184, 148, 0.1);
    border: 1px solid rgba(0, 184, 148, 0.3);
    color: var(--success);
}

.alert-error {
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.3);
    color: var(--danger);
}

.alert-warning {
    background: rgba(253, 203, 110, 0.1);
    border: 1px solid rgba(253, 203, 110, 0.3);
    color: var(--warning);
}

.alert-info {
    background: rgba(116, 185, 255, 0.1);
    border: 1px solid rgba(116, 185, 255, 0.3);
    color: var(--info);
}

.alert-icon {
    font-size: 1.2rem;
}

.alert-close {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: inherit;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0.6;
}

.alert-close:hover {
    opacity: 1;
}

/* ============================================
   TABLES
   ============================================ */
.table-responsive {
    overflow-x: auto;
    border-radius: 12px 0 12px 12px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.table th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.table tbody tr {
    transition: background 0.2s ease;
}

.table tbody tr:hover {
    background: var(--surface);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--header-bg);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text);
    text-decoration: none;
    flex-shrink: 0;
}

.header-logo img {
    height: 36px;
    width: auto;
}

.header-logo:hover {
    color: var(--primary);
}

.header-search {
    flex: 1;
    max-width: 400px;
    position: relative;
    display: flex;
    align-items: stretch;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.2s;
    height: 40px;
}

.header-search:focus-within {
    border-color: var(--primary);
}

.header-search input {
    flex: 1;
    width: 100%;
    min-width: 0;
    padding: 0 14px;
    font-family: inherit;
    font-size: 0.85rem;
    color: var(--text);
    background: transparent !important;
    border: none !important;
    outline: none;
}

.header-search input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
    font-weight: 500;
}

.header-search-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    padding: 0 18px 0 24px;
    border: none;
    font-family: var(--font-family, inherit);
    font-weight: 700;
    font-size: 0.82rem;
    cursor: pointer;
    clip-path: polygon(14px 0, 100% 0, 100% 100%, 0 100%);
    margin-left: -14px;
    transition: opacity 0.2s, transform 0.1s;
    border-radius: 0;
}

.header-search-btn:hover {
    opacity: 0.9;
}

.header-search-btn:active {
    transform: scale(0.98);
}

@media (max-width: 768px) {
    .header-search-btn {
        padding: 0 14px 0 20px;
        clip-path: polygon(10px 0, 100% 0, 100% 100%, 0 100%);
        margin-left: -10px;
    }
}

.search-results-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px 0 12px 12px;
    margin-top: 8px;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    display: none;
    z-index: 100;
}

.search-results-dropdown.active {
    display: block;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-nav a {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.header-nav a:hover,
.header-nav a.active {
    color: var(--text);
    background: var(--surface);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-cart {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px 0 10px 10px;
    background: var(--surface);
    color: var(--text);
    transition: all 0.3s ease;
}

.header-cart:hover {
    background: var(--primary);
    color: var(--btn-text);
}

.header-cart .cart-count {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 18px;
    height: 18px;
    background: var(--danger);
    color: var(--btn-text);
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border: none;
    border-radius: 10px 0 10px 10px;
    color: var(--text);
    font-size: 1.3rem;
    cursor: pointer;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: var(--footer-bg);
    border-top: 1px solid var(--footer-border);
    padding: 60px 0 0;
    margin-top: 80px;
    color: var(--footer-text);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-brand .header-logo img {
    filter: brightness(0) invert(1);
    height: 32px;
    width: auto;
}

.footer-brand p {
    color: var(--footer-text);
    font-size: 0.9rem;
    line-height: 1.7;
    margin: 16px 0 24px;
}

.footer-social {
    display: flex;
    gap: 10px;
    margin-top: 18px;
}

.footer-social .social-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    color: #ffffff;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-social .social-icon:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
    color: var(--btn-text);
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--footer-text);
    font-size: 0.9rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--btn-text);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--footer-border);
    padding: 20px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--footer-text);
}

/* ============================================
   STAR RATING
   ============================================ */
.star-rating {
    display: inline-flex;
    align-items: center;
    gap: 2px;
}

.star-rating .star {
    font-size: 0.9rem;
}

.star-rating .star.filled {
    color: var(--warning);
}

.star-rating .star.empty {
    color: var(--border);
}

.star-rating .rating-text {
    margin-left: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ============================================
   PAGINATION
   ============================================ */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 40px;
}

.page-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px 0 10px 10px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.page-btn:hover,
.page-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--btn-text);
}

.page-dots {
    color: var(--text-secondary);
    padding: 0 8px;
}

/* ============================================
   MODAL
   ============================================ */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-backdrop.active {
    display: flex;
    opacity: 1;
}

.modal {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px 0 20px 20px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalIn 0.3s ease;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 1.1rem;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--danger);
    color: var(--btn-text);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* ============================================
   TABS
   ============================================ */
.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
    overflow-x: auto;
}

.tab-btn {
    padding: 12px 24px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

/* ============================================
   LOADING & ANIMATIONS
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, var(--surface) 25%, var(--card) 50%, var(--surface) 75%);
    background-size: 200% 100%;
    animation: skeleton 1.5s ease infinite;
    border-radius: 8px;
}

@keyframes skeleton {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(20px);
    }

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

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

.slide-up {
    animation: slideUp 0.5s ease;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .section {
        padding: 48px 0;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .header-nav {
        display: none;
    }

    .header-search {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .header-nav.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--header-bg);
        border-bottom: 1px solid var(--border);
        padding: 16px;
        gap: 4px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 10px 20px;
        font-size: 0.85rem;
    }

    .btn-lg {
        padding: 12px 24px;
        font-size: 0.95rem;
    }

    .product-card .product-image {
        height: 160px;
    }
}