: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%);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f5576c;
    --success-color: #43e97b;
    --warning-color: #f093fb;
    --dark-color: #2c3e50;
    
    --shadow-light: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 15px 35px rgba(0, 0, 0, 0.2);
    
    --border-radius: 15px;
    --border-radius-lg: 25px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #333;
    overflow-x: hidden;
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 10px;
}

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

/* ===== NAVBAR ENHANCEMENTS ===== */
.navbar {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.8rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    transition: var(--transition);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    font-weight: 600;
    position: relative;
    transition: var(--transition);
    border-radius: var(--border-radius);
    margin: 0 5px;
    padding: 8px 16px !important;
}

.nav-link:hover {
    background: rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* ===== HERO SECTION ENHANCEMENTS ===== */
.hero-section {
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
    padding: 150px 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="1" fill="white" opacity="0.1"/><circle cx="10" cy="90" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, rgba(245, 247, 250, 1), transparent);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 2rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-btn {
    padding: 18px 40px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: var(--border-radius-lg);
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    text-decoration: none;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    color: white;
}

/* ===== CARD ENHANCEMENTS ===== */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

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

.card-img-top {
    transition: var(--transition);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

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

.product-card {
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition);
    z-index: 1;
}

.product-card:hover::before {
    opacity: 0.1;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    z-index: 2;
}

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

/* ===== BUTTON ENHANCEMENTS ===== */
.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    padding: 12px 30px;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.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: var(--transition);
}

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

.btn-primary {
    background: var(--primary-gradient);
    border: none;
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
    color: white;
}

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

.btn-success:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(67, 233, 123, 0.4);
    color: white;
}

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

.btn-warning:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(240, 147, 251, 0.4);
    color: white;
}

/* ===== CATEGORY CARDS ===== */
.category-card {
    background: var(--primary-gradient);
    color: white;
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.category-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    transition: var(--transition);
    transform: scale(0);
}

.category-card:hover::before {
    transform: scale(1);
}

.category-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--shadow-heavy);
}

.category-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.category-card:hover .category-icon {
    transform: scale(1.2) rotate(10deg);
}

/* ===== PRICE TAGS ===== */
.price-tag {
    background: var(--success-gradient);
    color: white;
    padding: 10px 20px;
    border-radius: var(--border-radius-lg);
    font-weight: 700;
    font-size: 1.2rem;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.price-tag::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: var(--transition);
}

.price-tag:hover::before {
    left: 100%;
}

/* ===== BADGES ===== */
.badge-custom {
    background: var(--secondary-gradient);
    color: white;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    animation: pulse 2s infinite;
}

/* ===== FORM ENHANCEMENTS ===== */
.form-control {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    padding: 15px 20px;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.9);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    background: white;
}

/* ===== FOOTER ENHANCEMENTS ===== */
.footer {
    background: var(--dark-gradient);
    color: white;
    padding: 60px 0 30px;
    margin-top: 100px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--primary-gradient);
}

.social-links a {
    display: inline-block;
    margin: 0 15px;
    transition: var(--transition);
}

.social-links a:hover {
    transform: translateY(-5px) scale(1.2);
    color: var(--primary-color) !important;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}

/* ===== LOADING SPINNER ===== */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .category-card {
        margin-bottom: 20px;
    }
    
    .navbar-brand {
        font-size: 1.5rem;
    }
}

/* ===== ADMIN PANEL STYLES ===== */
.admin-sidebar {
    background: var(--dark-gradient);
    min-height: 100vh;
    position: relative;
}

.admin-sidebar::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 1px;
    height: 100%;
    background: var(--primary-gradient);
}

.admin-nav-link {
    color: white;
    padding: 20px 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    display: block;
    text-decoration: none;
}

.admin-nav-link:hover {
    background: rgba(102, 126, 234, 0.2);
    color: white;
    transform: translateX(10px);
}

.admin-nav-link.active {
    background: var(--primary-gradient);
    border-left: 4px solid white;
}

/* ===== STATS CARDS ===== */
.stats-card {
    background: var(--primary-gradient);
    color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(30px, -30px);
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.stats-icon {
    font-size: 3rem;
    opacity: 0.8;
}

/* ===== SEARCH ENHANCEMENTS ===== */
.search-container {
    position: relative;
}

.search-input {
    padding-left: 50px;
    border-radius: var(--border-radius-lg);
    border: 2px solid #e9ecef;
    transition: var(--transition);
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.search-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: #6c757d;
    transition: var(--transition);
}

.search-input:focus + .search-icon {
    color: var(--primary-color);
}

/* ===== NOTIFICATION STYLES ===== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--success-gradient);
    color: white;
    padding: 15px 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    z-index: 1000;
    transform: translateX(400px);
    transition: var(--transition);
}

.notification.show {
    transform: translateX(0);
}

/* ===== PRODUCT GRID ENHANCEMENTS ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding: 20px 0;
}

.product-item {
    transition: var(--transition);
}

.product-item:hover {
    transform: scale(1.02);
}

/* ===== CART ENHANCEMENTS ===== */
.cart-item {
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.cart-item:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-2px);
}

/* ===== UTILITY CLASSES ===== */
.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hover-lift {
    transition: var(--transition);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.text-shadow {
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}