* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #0f172a;
    --muted: #475569;
    --border: #e2e8f0;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --hover: #eef2ff;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #f59e0b;
    --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
}

body {
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

button,
input,
select {
    font: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

/* Header */
.header {
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 100;
}

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

.logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.05em;
}

.nav {
    display: flex;
    gap: 24px;
    align-items: center;
    flex-wrap: wrap;
}

.nav a {
    text-decoration: none;
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
    transition: opacity 0.2s;
}

.nav a:hover {
    opacity: 0.7;
}

.nav a.active {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
    padding-bottom: 2px;
}

.nav-account-link {
    background: #e0e7ff;
    color: #1e40af !important;
    padding: 8px 12px;
    border-radius: 999px;
}

.nav-account-link.active {
    background: var(--primary);
    color: #fff !important;
    border-bottom: none;
}

.admin-hint {
    margin: 14px 0 8px;
    color: var(--muted);
    font-size: 0.9rem;
}

/* Hero */
.hero {
    text-align: center;
    padding: 96px 24px;
    background:
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.28), transparent 35%),
        radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.22), transparent 30%),
        linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    border-radius: 28px;
    color: #fff;
    margin-bottom: 26px;
    box-shadow: var(--shadow);
}

.hero h2 {
    font-size: clamp(2.5rem, 3.5vw, 4rem);
    margin-bottom: 16px;
    line-height: 1.05;
}

.hero p {
    font-size: 1rem;
    opacity: 0.92;
    margin: 0 auto 28px;
    max-width: 720px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-btn-primary {
    background: #0f172a;
    color: #fff;
}

.hero-btn-primary:hover {
    background: #020617;
}

.hero-btn-secondary {
    background: rgba(255, 255, 255, 0.22);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.hero-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.32);
}

.home-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 26px;
}

.home-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 18px 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.home-stat-value {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--primary);
}

.home-stat-label {
    color: var(--muted);
    font-size: 0.92rem;
}

.home-benefits {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 36px;
}

.home-benefit-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 22px;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.home-benefit-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 24px 64px rgba(15, 23, 42, 0.12);
}

.home-benefit-card h3 {
    margin-bottom: 10px;
}

.home-benefit-card p {
    color: var(--muted);
}

.home-products {
    margin-bottom: 24px;
}

.home-categories {
    margin-bottom: 32px;
}

.home-category-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.home-category-card {
    padding: 22px;
    border-radius: 22px;
    background: linear-gradient(160deg, #ffffff, #eef2ff);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.home-category-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.home-category-card h3 {
    margin-bottom: 8px;
}

.home-category-card p {
    color: var(--muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 22px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    font-weight: 700;
    transition: transform 0.2s ease, background 0.2s ease, opacity 0.2s ease;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

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

.btn-secondary:hover {
    background: var(--hover);
}

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

.btn-small {
    padding: 10px 16px;
    font-size: 0.9rem;
}

/* Filters */
.filters {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 32px;
    padding: 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.filters input,
.filters select {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
    color: var(--text);
}

.filters input::placeholder {
    color: #94a3b8;
}

.price-range {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.price-range input[type="range"] {
    width: 100%;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.product-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.product-image {
    width: 100%;
    height: 260px;
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    display: block;
}

.product-image-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    border-radius: 999px;
    border: none;
    background: rgba(15, 23, 42, 0.75);
    color: #fff;
    cursor: pointer;
    z-index: 2;
}

.product-image-control.prev {
    left: 10px;
}

.product-image-control.next {
    right: 10px;
}

.product-image-dots {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    z-index: 2;
}

.product-image-dot {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.45);
}

.product-image-dot.active {
    background: #fff;
}

.product-body {
    padding: 22px 20px;
}

.product-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
    color: var(--text);
    min-height: 44px;
}

.product-price {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 14px;
    color: var(--primary);
}

.product-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
    color: var(--muted);
    font-size: 0.9rem;
}

.product-meta span {
    background: var(--hover);
    padding: 6px 10px;
    border-radius: 999px;
}

.product-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.product-actions button {
    flex: 1;
}

/* Product Detail */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.product-detail img {
    width: 100%;
    border-radius: 28px;
    min-height: 420px;
    object-fit: cover;
}

.modal-gallery {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.modal-thumb {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: #fff;
    width: 72px;
    height: 72px;
    padding: 0;
    cursor: pointer;
}

.modal-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-thumb.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.product-info {
    display: flex;
    flex-direction: column;
}

.product-info h2 {
    font-size: 2.5rem;
    margin-bottom: 18px;
    color: var(--text);
}

.product-info p {
    opacity: 0.85;
    margin-bottom: 24px;
    line-height: 1.8;
}

.product-actions input {
    width: 88px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 18px;
    text-align: center;
}

/* Cart, Wishlist, Orders */
.cart-content,
.wishlist-content,
.orders-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.cart-item,
.order-item {
    display: grid;
    grid-template-columns: 110px 1fr auto auto;
    gap: 20px;
    align-items: center;
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: var(--surface);
}

.cart-item-image,
.order-item-image {
    width: 110px;
    height: 110px;
    background: #f8fafc;
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.cart-item-image img,
.order-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cart-item-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.cart-item-title {
    font-weight: 700;
    color: var(--text);
}

.cart-item-price {
    color: var(--muted);
    font-size: 0.95rem;
}

.cart-item-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.cart-item-controls input {
    width: 60px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 16px;
    text-align: center;
}

.cart-summary {
    padding: 24px;
    background: var(--surface);
    border-radius: 24px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: center;
    border: 1px solid var(--border);
}

.cart-summary-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cart-summary-total {
    font-size: 1.25rem;
    font-weight: 800;
}

.wishlist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 22px;
}

.wishlist-item {
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 22px;
    background: var(--surface);
    text-align: center;
}

.wishlist-item-image {
    width: 100%;
    height: 220px;
    background: #f8fafc;
    border-radius: 24px;
    margin-bottom: 18px;
    overflow: hidden;
}

.wishlist-item-title {
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
}

.wishlist-item-price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
}

.wishlist-item-actions {
    display: flex;
    gap: 10px;
}

.admin-stats {
    color: var(--muted);
    margin-top: 12px;
    font-size: 0.95rem;
}

.admin-products {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.admin-product-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.admin-product-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
}

.admin-product-title {
    font-weight: 700;
    color: var(--text);
}

.admin-product-actions {
    display: flex;
    gap: 10px;
}

.admin-product-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    color: var(--muted);
    font-size: 0.95rem;
}

.admin-product-description {
    color: var(--muted);
    line-height: 1.6;
    min-height: 60px;
}

.admin-category-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.admin-category-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--hover);
    border-radius: 16px;
    padding: 10px 12px;
}

.admin-form input,
.admin-form textarea,
.admin-form select {
    width: 100%;
    margin-bottom: 12px;
}

.admin-form textarea {
    min-height: 100px;
}

.admin-form-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.admin-form-actions .btn {
    flex: 1;
}

.order-card {
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 24px;
    background: var(--surface);
}

.order-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 18px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 18px;
}

.order-number {
    font-weight: 700;
}

.order-status {
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.order-status.pending {
    background: #fbbf24;
    color: #fff;
}

.order-status.processing {
    background: #60a5fa;
    color: #fff;
}

.order-status.delivered {
    background: #4ade80;
    color: #075985;
}

.order-items {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 18px;
}

.order-item-simple {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.order-total {
    display: flex;
    justify-content: space-between;
    font-weight: 700;
    font-size: 1rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.56);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--surface);
    border-radius: 28px;
    padding: 36px;
    width: min(100%, 900px);
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.28s ease;
}

.modal-sm {
    max-width: 520px;
}

.modal-close {
    position: absolute;
    top: 18px;
    right: 18px;
    font-size: 30px;
    cursor: pointer;
    opacity: 0.7;
}

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

@keyframes slideIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Auth Forms */
.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.auth-form h2 {
    margin-bottom: 24px;
    color: var(--text);
}

.auth-form input {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 14px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
}

.auth-form .btn {
    width: 100%;
}

.auth-form p {
    font-size: 0.95rem;
    color: var(--muted);
    margin-top: 16px;
}

.auth-form a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
}

.terms-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    color: var(--muted);
    font-size: 0.95rem;
}

.terms-checkbox input {
    width: 16px;
    height: 16px;
}

.account-info {
    margin-bottom: 24px;
    padding: 20px;
    background: var(--hover);
    border-radius: 24px;
}

.account-page-state {
    padding: 24px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 520px;
}

.account-page-content {
    max-width: 620px;
}

.account-info p {
    margin-bottom: 10px;
    color: var(--muted);
}

.form-group {
    margin-bottom: 24px;
}

.form-group h3 {
    margin-bottom: 14px;
    font-size: 1rem;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
}

.checkout-summary {
    background: var(--hover);
    padding: 20px;
    border-radius: 24px;
    margin-bottom: 24px;
}

.checkout-summary p {
    margin-bottom: 10px;
}

.checkout-summary .total {
    font-size: 1rem;
    font-weight: 700;
    margin-top: 10px;
}

#messages {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    padding: 14px 18px;
    border-radius: 18px;
    color: #fff;
    font-size: 0.95rem;
    animation: slideInRight 0.3s ease;
    max-width: 320px;
    box-shadow: var(--shadow);
}

.message.success {
    background: var(--success);
}

.message.error {
    background: var(--danger);
}

.message.info {
    background: var(--primary);
}

@keyframes slideInRight {
    from { transform: translateX(30px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.pagination button {
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: background 0.2s;
}

.pagination button:hover {
    background: var(--hover);
}

.pagination button.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.loading,
.empty-message {
    text-align: center;
    padding: 40px;
    opacity: 0.7;
}

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

/* Admin Tabs */
.admin-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border);
}

.admin-tab-btn {
    padding: 12px 24px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-weight: 600;
    color: var(--muted);
    transition: all 0.2s;
}

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

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

.admin-tab-content {
    display: none;
}

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

/* Admin Orders Table */
.admin-orders-table {
    overflow-x: auto;
}

.orders-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.orders-table thead {
    background: #f3f4f6;
    font-weight: 600;
}

.orders-table th,
.orders-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

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

.admin-order-actions select {
    padding: 8px 10px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #fff;
}

.order-status-badge {
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
}

.order-status-badge.pending {
    background: #fef3c7;
    color: #92400e;
}

.order-status-badge.processing {
    background: #dbeafe;
    color: #1e40af;
}

.order-status-badge.delivered {
    background: #dcfce7;
    color: #166534;
}

.order-status-badge.cancelled {
    background: #fee2e2;
    color: #991b1b;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: #ffffff;
    padding: 40px 0 20px;
    margin-top: 80px;
    border-top: 1px solid #333;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-content > div:not(.footer-bottom) {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: -0.02em;
}

.footer-section p {
    font-size: 0.95rem;
    line-height: 1.6;
    opacity: 0.8;
}

.footer-social {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.social-link {
    color: #ffffff;
    text-decoration: none;
    font-size: 0.95rem;
    transition: opacity 0.2s;
    opacity: 0.8;
}

.social-link:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
    font-size: 0.9rem;
    opacity: 0.7;
}

.footer-bottom p {
    margin: 5px 0;
}

@media (max-width: 768px) {
    .footer {
        padding: 30px 0 15px;
    }

    .footer-content > div:not(.footer-bottom) {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .footer-section h3 {
        font-size: 1rem;
    }

    .footer-section p {
        font-size: 0.9rem;
    }
}

@media (max-width: 992px) {
    .home-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .home-category-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .home-benefits {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .filters {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 16px;
    }

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

    .home-stats {
        grid-template-columns: 1fr;
    }

    .home-category-grid {
        grid-template-columns: 1fr;
    }

    .home-benefits {
        grid-template-columns: 1fr;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }

    .product-detail {
        grid-template-columns: 1fr;
    }

    .cart-item,
    .order-item {
        grid-template-columns: 1fr;
    }

    .cart-item-controls {
        width: 100%;
        justify-content: space-between;
    }

    .modal-content {
        padding: 24px;
    }

    .hero {
        padding: 48px 20px;
    }

    .hero h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .product-detail img {
        min-height: 280px;
    }

    .pagination button {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
}