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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --text-color: #374151;
    --text-light: #6b7280;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background-color: #fff;
    line-height: 1.6;
}

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

/* Pages */
.page {
    display: none;
    min-height: 100vh;
}

.page.active {
    display: block;
}

/* Landing Page */
.landing-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 20px;
}

.landing-content {
    text-align: center;
    color: white;
    max-width: 600px;
}

.landing-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.tagline {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.landing-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tracking-section {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 12px;
    margin-top: 2rem;
}

.tracking-section h3 {
    margin-bottom: 1rem;
}

.tracking-form {
    display: flex;
    gap: 0.5rem;
    max-width: 400px;
    margin: 0 auto;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-color);
}

.login-box {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    margin-bottom: 2rem;
    text-align: center;
    color: var(--dark-color);
}

/* Header */
.header {
    background: white;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.header-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.admin-header {
    background: var(--dark-color);
    color: white;
}

.admin-header .logo {
    color: white;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: #4f46e5;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--text-color);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--light-color);
    border-color: var(--text-color);
}

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

.btn-accent:hover {
    background: #db2777;
}

.btn-success {
    background: var(--success-color);
    color: white;
}

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

.btn-icon {
    position: relative;
}

.badge {
    background: var(--danger-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: bold;
}

.full-width {
    width: 100%;
    justify-content: center;
}

/* Inputs */
.input {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    width: 100%;
    transition: border-color 0.3s;
}

.input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

textarea.input {
    resize: vertical;
    font-family: inherit;
}

/* Form */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Filters */
.filters {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.filters .input {
    flex: 1;
    min-width: 200px;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.product-image {
    width: 100%;
    height: 250px;
    background: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--text-light);
}

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

.product-info {
    padding: 1.5rem;
}

.product-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.product-category {
    display: inline-block;
    background: var(--light-color);
    color: var(--text-light);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
}

.product-description {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.product-price {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.product-variants {
    margin-top: 1rem;
}

.variant-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.variant-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.9rem;
}

.variant-btn:hover {
    border-color: var(--primary-color);
}

.variant-btn.selected {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.variant-btn.out-of-stock {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 2rem 0;
}

.pagination button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.pagination button:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

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

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Admin Tabs */
.admin-tabs {
    display: flex;
    gap: 0.5rem;
    margin: 2rem 0;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 1rem 2rem;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-light);
    position: relative;
    transition: color 0.3s;
}

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

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

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.admin-tab {
    display: none;
}

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

/* Admin Actions */
.admin-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.admin-actions .input {
    flex: 1;
    min-width: 200px;
}

/* Admin List */
.admin-list {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.admin-item {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}

.admin-item:hover {
    background: var(--light-color);
}

.admin-item:last-child {
    border-bottom: none;
}

.admin-item-info {
    flex: 1;
}

.admin-item-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.admin-item-meta {
    color: var(--text-light);
    font-size: 0.9rem;
}

.admin-item-actions {
    display: flex;
    gap: 0.5rem;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

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

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

.status-shipped {
    background: #e0e7ff;
    color: #3730a3;
}

.status-delivered {
    background: #d1fae5;
    color: #065f46;
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s;
}

@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-content.large {
    max-width: 700px;
}

.close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-light);
    cursor: pointer;
    transition: color 0.3s;
}

.close:hover {
    color: var(--dark-color);
}

/* Cart */
.cart-items {
    margin: 1.5rem 0;
}

.cart-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.cart-item-info {
    flex: 1;
}

.cart-item-name {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.cart-item-variant {
    color: var(--text-light);
    font-size: 0.9rem;
}

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.quantity-btn {
    width: 30px;
    height: 30px;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}

.quantity-btn:hover {
    background: var(--light-color);
}

.cart-item-price {
    font-weight: 600;
    color: var(--primary-color);
}

.cart-footer {
    border-top: 2px solid var(--border-color);
    padding-top: 1rem;
    margin-top: 1rem;
}

.cart-total {
    display: flex;
    justify-content: space-between;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

/* Checkout */
.checkout-summary {
    background: var(--light-color);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.summary-row.total {
    border-top: 2px solid var(--border-color);
    padding-top: 0.75rem;
    margin-top: 0.75rem;
    font-size: 1.2rem;
}

/* Loading */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .landing-content h1 {
        font-size: 2.5rem;
    }

    .landing-buttons {
        flex-direction: column;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }

    .admin-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .modal-content {
        width: 95%;
        padding: 1.5rem;
    }

    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Utility Classes */
.icon {
    font-size: 1.2rem;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }