:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --success-color: #059669;
    --danger-color: #dc2626;
    --warning-color: #d97706;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
    --border-color: #e5e7eb;
    --text-color: #374151;
    --text-light: #6b7280;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    background: var(--light-color);
    line-height: 1.6;
}

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

/* HEADER */
header {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    background: var(--dark-color);
    color: white;
    padding: 10px 0;
    font-size: 14px;
}

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

.header-top a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
}

.header-main {
    padding: 20px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 28px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.logo i {
    font-size: 40px;
}

.cart-icon {
    position: relative;
    background: var(--primary-color);
    color: white;
    padding: 15px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
}

.cart-icon:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.cart-count {
    background: var(--danger-color);
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
}

/* HERO SECTION */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

/* PRODUCTS SECTION */
.products-section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 30px;
    color: var(--dark-color);
}

/* Category Filters */
.category-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 50px;
    padding: 30px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.filter-btn {
    position: relative;
    padding: 14px 28px;
    border: none;
    background: white;
    color: var(--dark-color);
    border-radius: 30px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.filter-btn:hover::before {
    left: 100%;
}

.filter-btn:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
    color: white;
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(0,123,255,0.4);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
    color: white;
    box-shadow: 0 6px 20px rgba(0,123,255,0.4);
    transform: scale(1.05);
}

.filter-btn i {
    font-size: 18px;
    transition: transform 0.3s;
}

.filter-btn:hover i,
.filter-btn.active i {
    transform: rotate(360deg);
}

.filter-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: transform 0.3s;
}

.filter-btn.active::after {
    transform: translateX(-50%) scaleX(1);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.product-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    background: var(--light-color);
}

.product-info {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.product-description {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 14px;
    flex: 1;
}

.product-price {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.product-price-detail {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 5px;
}

.product-type-badge {
    display: inline-block;
    padding: 5px 10px;
    background: var(--warning-color);
    color: white;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 10px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    text-align: center;
}

.btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

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

.btn-success:hover {
    background: #047857;
}

.btn-block {
    display: block;
    width: 100%;
}

/* QUANTITY INPUT */
.quantity-input {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.quantity-input button {
    width: 35px;
    height: 35px;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
    transition: all 0.3s;
}

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

.quantity-input input {
    width: 60px;
    height: 35px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
}

/* MODAL */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    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: white;
    padding: 30px;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp 0.3s;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.modal-header h3 {
    font-size: 24px;
    color: var(--dark-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-light);
    line-height: 1;
}

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

.fragrance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.fragrance-item-qty {
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: white;
    transition: all 0.3s;
}

.fragrance-item-qty:hover {
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
}

.fragrance-name {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark-color);
    text-align: center;
}

.qty-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.qty-controls .qty-btn {
    width: 35px;
    height: 35px;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
    font-weight: bold;
    transition: all 0.3s;
}

.qty-controls .qty-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.fragrance-qty-input {
    width: 60px;
    height: 35px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 18px;
    font-weight: bold;
    background: var(--light-color);
}

.fragrance-item {
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.fragrance-item:hover {
    border-color: var(--primary-color);
    background: var(--light-color);
}

.fragrance-item.selected {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.fragrance-item input[type="checkbox"] {
    display: none;
}

.selected-count {
    text-align: center;
    padding: 15px;
    background: var(--light-color);
    border-radius: 4px;
    margin-bottom: 20px;
    font-weight: 600;
    font-size: 16px;
}

.selected-count strong {
    color: var(--primary-color);
    font-size: 20px;
}

/* FOOTER */
footer {
    background: var(--dark-color);
    color: white;
    padding: 40px 0 20px;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h4 {
    margin-bottom: 15px;
    font-size: 18px;
}

.footer-section p,
.footer-section a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    display: block;
    margin-bottom: 8px;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.6);
}

/* ALERT */
.alert {
    padding: 15px 20px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--primary-color);
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .header-main .container {
        flex-direction: column;
        gap: 20px;
    }
}