/* Enhanced Diet Systems Styling */

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --info-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --surface-gradient: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.2);
    --border-radius: 16px;
    --border-radius-small: 8px;
    --transition-speed: 0.3s;
}

/* Hero Section Enhancement */
.hero-section {
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
}

.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="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

/* Advanced Card Styling */
.diet-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

.diet-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
}

.diet-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
}

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

/* Card Header Gradient */
.card-header-gradient {
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
}

.card-header-gradient::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: rotate(45deg);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* Statistics Cards */
.stat-card {
    border-radius: var(--border-radius);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-speed) ease;
}

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

.stat-card .mud-icon {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* Search Field Enhancement */
.search-field {
    border-radius: var(--border-radius-small);
    transition: all var(--transition-speed) ease;
}

.search-field:focus-within {
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: scale(1.02);
}

/* Filter Section */
.filter-section {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    backdrop-filter: blur(10px);
}

/* Loading Skeleton Animation */
.skeleton-loader {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: #666;
}

.empty-state .mud-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Floating Action Button */
.mud-fab {
    transition: all var(--transition-speed) ease;
}

.mud-fab:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-heavy);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 0;
    }
    
    .diet-card {
        margin: 0.5rem 0;
    }
    
    .stat-card {
        margin-bottom: 1rem;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .diet-card {
        background: #1e1e1e;
        color: white;
    }
    
    .filter-section {
        background: #2d2d2d;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 4px;
}

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

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-up {
    animation: slideUp 0.3s ease-out;
}

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

/* Hover Effects */
.hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

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

/* Glass Effect */
.glass-effect {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

/* Interactive Elements */
.interactive-button {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-speed) ease;
}

.interactive-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.interactive-button:hover::before {
    width: 300px;
    height: 300px;
}

/* Card Grid Layout */
.diet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

/* Status Indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

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

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

.status-inactive {
    background: var(--secondary-gradient);
    color: white;
}