/* Enhanced Interface Styles */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --whatsapp-gradient: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.18);
    --text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --box-shadow-soft: 0 8px 32px rgba(31, 38, 135, 0.37);
    --box-shadow-hover: 0 15px 35px rgba(31, 38, 135, 0.5);
}

/* Glass Morphism Header */
.header {
    background: var(--primary-gradient);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--box-shadow-soft);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--glass-bg);
    z-index: -1;
}

.header-content {
    position: relative;
    z-index: 1;
}

.logo h1 {
    background: linear-gradient(45deg, #fff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: var(--text-shadow);
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: 1px;
}

.logo p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    font-weight: 300;
    text-shadow: var(--text-shadow);
}

/* Enhanced Buttons */
.whatsapp-btn, .cart-btn {
    background: var(--whatsapp-gradient);
    border: none;
    border-radius: 50px;
    padding: 12px 24px;
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
    position: relative;
    overflow: hidden;
}

.whatsapp-btn::before, .cart-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.whatsapp-btn:hover::before, .cart-btn:hover::before {
    left: 100%;
}

.whatsapp-btn:hover, .cart-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
}

.cart-btn {
    background: var(--secondary-gradient);
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.3);
}

.cart-btn:hover {
    box-shadow: 0 8px 25px rgba(245, 87, 108, 0.4);
}

/* Enhanced Search Section */
.search-section {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    margin: 20px;
    padding: 40px;
    box-shadow: var(--box-shadow-soft);
}

.search-content h2 {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: var(--text-shadow);
}

.search-bar {
    background: white;
    border-radius: 50px;
    padding: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    max-width: 500px;
    margin: 20px auto;
    transition: all 0.3s ease;
}

.search-bar:focus-within {
    transform: scale(1.02);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.search-bar input {
    flex: 1;
    border: none;
    outline: none;
    padding: 12px 20px;
    font-size: 1rem;
    background: transparent;
    color: var(--text-dark);
}

.search-bar button {
    background: var(--primary-gradient);
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-bar button:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* Enhanced Categories */
.categories {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}

.category-btn {
    background: white;
    border: 2px solid transparent;
    border-radius: 25px;
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.category-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.category-btn:hover::before, .category-btn.active::before {
    opacity: 1;
}

.category-btn:hover, .category-btn.active {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

/* Enhanced Product Cards */
.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 1px solid var(--glass-border);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--glass-bg);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
    pointer-events: none;
}

.product-card:hover::before {
    opacity: 1;
}

.product-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--box-shadow-hover);
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.4s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-info {
    padding: 25px;
    position: relative;
    z-index: 2;
}

.product-info h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-info p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 15px;
}

.price {
    font-size: 1.4rem;
    font-weight: 800;
    background: var(--success-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    display: block;
}

.add-to-cart-btn {
    background: var(--whatsapp-gradient);
    border: none;
    border-radius: 25px;
    padding: 12px 24px;
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    position: relative;
    overflow: hidden;
}

.add-to-cart-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.3s ease;
}

.add-to-cart-btn:hover::before {
    width: 300px;
    height: 300px;
}

.add-to-cart-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
}

/* Enhanced Cart */
.cart-overlay {
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.cart {
    background: white;
    border-radius: 20px 0 0 20px;
    box-shadow: var(--box-shadow-soft);
    border: 1px solid var(--glass-border);
}

.cart-header {
    background: var(--primary-gradient);
    color: white;
    padding: 20px;
    border-radius: 20px 0 0 0;
}

.cart-item {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.cart-item:hover {
    background: rgba(102, 126, 234, 0.05);
}

/* Enhanced Animations */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.product-card {
    animation: fadeInScale 0.6s ease-out;
}

.search-section {
    animation: slideInUp 0.8s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .search-section {
        margin: 10px;
        padding: 20px;
    }
    
    .search-content h2 {
        font-size: 1.8rem;
    }
    
    .categories {
        gap: 10px;
    }
    
    .category-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }
    
    .product-card {
        margin-bottom: 20px;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* Success Animation */
.success-checkmark {
    width: 80px;
    height: 115px;
    margin: 0 auto;
}

.success-checkmark .check-icon {
    width: 80px;
    height: 80px;
    position: relative;
    border-radius: 50%;
    box-sizing: content-box;
    border: 4px solid #4CAF50;
}

.success-checkmark .check-icon::before {
    top: 3px;
    left: -2px;
    width: 30px;
    transform-origin: 100% 50%;
    border-radius: 100px 0 0 100px;
}

.success-checkmark .check-icon::after {
    top: 0;
    left: 30px;
    width: 60px;
    transform-origin: 0 50%;
    border-radius: 0 100px 100px 0;
    animation: rotate-circle 4.25s ease-in;
}

.success-checkmark .check-icon::before,
.success-checkmark .check-icon::after {
    content: '';
    height: 100px;
    position: absolute;
    background: #FFFFFF;
    transform: rotate(-45deg);
}

.success-checkmark .check-icon .icon-line {
    height: 5px;
    background-color: #4CAF50;
    display: block;
    border-radius: 2px;
    position: absolute;
    z-index: 10;
}

.success-checkmark .check-icon .icon-line.line-tip {
    top: 46px;
    left: 14px;
    width: 25px;
    transform: rotate(45deg);
    animation: icon-line-tip 0.75s;
}

.success-checkmark .check-icon .icon-line.line-long {
    top: 38px;
    right: 8px;
    width: 47px;
    transform: rotate(-45deg);
    animation: icon-line-long 0.75s;
}

@keyframes rotate-circle {
    0% {
        transform: rotate(-45deg);
    }
    5% {
        transform: rotate(-45deg);
    }
    12% {
        transform: rotate(-405deg);
    }
    100% {
        transform: rotate(-405deg);
    }
}

@keyframes icon-line-tip {
    0% {
        width: 0;
        left: 1px;
        top: 19px;
    }
    54% {
        width: 0;
        left: 1px;
        top: 19px;
    }
    70% {
        width: 50px;
        left: -8px;
        top: 37px;
    }
    84% {
        width: 17px;
        left: 21px;
        top: 48px;
    }
    100% {
        width: 25px;
        left: 14px;
        top: 45px;
    }
}

@keyframes icon-line-long {
    0% {
        width: 0;
        right: 46px;
        top: 54px;
    }
    65% {
        width: 0;
        right: 46px;
        top: 54px;
    }
    84% {
        width: 55px;
        right: 0px;
        top: 35px;
    }
    100% {
        width: 47px;
        right: 8px;
        top: 38px;
    }
}