/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Modern Color Palette */
    --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%);
    --danger-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    --primary-color: #667eea;
    --primary-hover: #5568d3;
    --secondary-color: #764ba2;
    --danger-color: #f5576c;
    --danger-hover: #e4465a;
    --success-color: #4facfe;
    
    --bg-gradient: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    --bg-color: #f8f9ff;
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-glass: rgba(255, 255, 255, 0.7);
    --text-primary: #1a1a2e;
    --text-secondary: #6c757d;
    --border-color: rgba(102, 126, 234, 0.2);
    
    --shadow-sm: 0 2px 8px rgba(102, 126, 234, 0.1);
    --shadow-md: 0 8px 24px rgba(102, 126, 234, 0.15);
    --shadow-lg: 0 16px 48px rgba(102, 126, 234, 0.2);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-gradient);
    min-height: 100vh;
    min-height: -webkit-fill-available; /* iOS Safari */
    color: var(--text-primary);
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    contain: layout style;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Navigation */
.navbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow 0.2s ease;
    contain: layout style;
}

.navbar:hover {
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    height: 2.5rem;
    width: auto;
    object-fit: contain;
    transition: transform 0.3s ease;
}

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

.navbar h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
    margin: 0;
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.nav-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0.1;
    transition: left 0.3s ease;
}

.nav-links a:hover::before {
    left: 0;
}

.nav-links a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-links a.active {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-sm);
}

.nav-links a.active::before {
    display: none;
}

/* User menu (Profile / Logout) */
.user-menu {
    position: relative;
    display: flex;
    align-items: center;
}

.user-menu-trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.55rem 0.9rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 600;
}

.user-menu-trigger:hover {
    color: var(--primary-color);
    border-color: rgba(102, 126, 234, 0.35);
    transform: translateY(-1px);
}

.user-menu-chevron {
    font-size: 0.9rem;
    opacity: 0.8;
}

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 190px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
    display: none;
    z-index: 2000;
}

.user-menu-dropdown a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0.9rem;
    border-radius: 12px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: background 0.2s ease, color 0.2s ease;
}

.user-menu-dropdown a:hover {
    background: rgba(102, 126, 234, 0.08);
    color: var(--primary-color);
}

.user-menu-dropdown a.danger {
    color: var(--danger-color);
}

.user-menu-dropdown a.danger:hover {
    background: rgba(245, 87, 108, 0.08);
    color: var(--danger-hover);
}

/* Profile page */
.profile-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    max-width: 720px;
}

.profile-card h3 {
    margin: 0 0 1rem 0;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3rem 2rem;
    position: relative;
    z-index: 1;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Filters Bar */
.filters-bar {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    overflow: visible;
}

.search-box {
    width: 100%;
}

.search-box input {
    width: 100%;
    padding: 0.875rem 1.25rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--card-bg);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.filters-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.filters-group select {
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--card-bg);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 180px;
}

.filters-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Removed fadeInDown animation for better performance */

.page-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    box-shadow: var(--shadow-sm);
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0) scale(0.98);
    transition: transform 0.1s ease;
}

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

.btn-primary:hover {
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

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

.btn-danger:hover {
    box-shadow: 0 0 20px rgba(245, 87, 108, 0.4);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-tiny {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-icon {
    background: transparent;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 10px;
    transition: background 0.15s ease, transform 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
}

.btn-icon:hover {
    background: var(--card-bg);
}

.btn-icon:active {
    opacity: 0.8;
}

.btn-icon-small {
    background: transparent;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    padding: 0.375rem;
    border-radius: 8px;
    transition: background 0.15s ease, transform 0.15s ease;
    -webkit-tap-highlight-color: transparent;
}

.btn-icon-small:hover {
    background: var(--card-bg);
}

.btn-icon-small:active {
    opacity: 0.8;
}

/* Cards */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 2rem;
    contain: layout;
}

/* Removed fadeInUp animation for better performance */

.product-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    contain: layout style paint;
    will-change: transform;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
}

.product-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
    margin-right: 1rem;
    line-height: 1.3;
}

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

.product-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.prices-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-color);
}

.prices-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.prices-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.best-price-badge {
    background: var(--success-gradient);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
}

/* Removed pulse animation for better performance */

.store-prices-group {
    margin-bottom: 2rem;
    contain: layout style;
}

/* Removed slideIn animation for better performance */

.store-prices-group:last-child {
    margin-bottom: 0;
}

.store-prices-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.store-prices-title-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

.store-logo-inline {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: 6px;
    background: var(--card-bg);
    padding: 4px;
    box-shadow: var(--shadow-sm);
}

.store-prices-title {
    font-size: 1.0625rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.store-prices-title::before {
    content: '🏪';
    font-size: 1.25rem;
}

.store-prices-title-wrapper .store-prices-title::before {
    display: none;
}

.prices-list {
    margin-bottom: 1rem;
}

.price-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 12px;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.price-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.price-info {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    flex: 1;
}

.price-values {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.price-normal {
    font-size: 1.375rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-discount-info {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-style: italic;
    padding: 0.25rem 0.75rem;
    background: rgba(245, 87, 108, 0.1);
    border-radius: 8px;
    border-left: 3px solid var(--danger-color);
}

.price-date {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-style: italic;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.price-date::before {
    content: '📅';
    font-size: 0.875rem;
}

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

.no-prices,
.no-prices-in-store {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-style: italic;
    padding: 1.5rem;
    text-align: center;
    background: var(--card-bg);
    border-radius: 12px;
    border: 2px dashed var(--border-color);
}

.stores-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    animation: fadeInUp 0.6s ease;
}

.store-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    contain: layout style paint;
}

.store-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.store-card:hover::before {
    transform: scaleX(1);
}

.store-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.store-logo-preview {
    margin-bottom: 1rem;
    text-align: center;
}

.store-logo-img {
    max-width: 120px;
    max-height: 120px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 12px;
    background: var(--card-bg);
    padding: 0.75rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.store-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.store-actions {
    display: flex;
    gap: 0.75rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

/* Removed fadeIn animation for better performance */

.empty-state p {
    font-size: 1.125rem;
}

/* Modal */
.modal {
    position: fixed !important;
    z-index: 2000;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 1rem;
    overflow: hidden !important;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    background: rgba(102, 126, 234, 0.85);
    transition: opacity 0.15s ease, visibility 0.15s ease;
    box-sizing: border-box;
    touch-action: none;
    transform: none !important;
}

.modal.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.modal-content {
    background: #ffffff;
    border-radius: 24px;
    padding: 2.5rem;
    max-width: 550px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
    border: 2px solid rgba(102, 126, 234, 0.2);
    position: relative;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.15s ease, transform 0.15s ease;
    transform-origin: center;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    flex-shrink: 0;
    margin: 0 auto;
}

.modal.show .modal-content {
    opacity: 1;
    transform: translateY(0);
}

/* Confirmation Dialog */
.confirm-dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    contain: strict;
}

.confirm-dialog {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    max-width: 450px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    contain: layout style paint;
}

/* Removed slideUp animation for better performance */

.confirm-dialog h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.confirm-dialog p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.confirm-dialog-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-top: 3rem;
    padding: 1.5rem;
    background: var(--card-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.page-info {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 120px;
    text-align: center;
}

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

.close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    transition: color 0.15s ease, background 0.15s ease, transform 0.15s ease;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.2);
    -webkit-tap-highlight-color: transparent;
}

.close:hover {
    color: var(--danger-color);
    transform: rotate(90deg) scale(1.1);
    background: rgba(245, 87, 108, 0.1);
}

.close:active {
    transform: rotate(90deg) scale(0.95);
}

.modal-content h2 {
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.875rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Forms */
.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.form-group label small {
    font-weight: 400;
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    background: #ffffff;
    color: var(--text-primary);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-group select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23667eea' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group input[type="file"] {
    padding: 0.75rem;
    cursor: pointer;
    background: var(--card-bg);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

.logo-preview-container {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 12px;
    border: 2px dashed var(--border-color);
    text-align: center;
}

.logo-preview {
    max-width: 200px;
    max-height: 200px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    margin-bottom: 0.75rem;
}

.logo-preview-container p {
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.btn-remove-logo {
    padding: 0.5rem 1rem;
    background: var(--danger-gradient);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-remove-logo:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2.5rem;
}

.form-actions .btn {
    min-width: 100px;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
}

/* Removed heavy animations from login page for better performance */

/* Removed float animation for better performance */

.login-container {
    width: 100%;
    max-width: 450px;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

.login-box {
    background: var(--card-bg);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
    contain: layout style paint;
}

/* Removed loginSlideIn animation for better performance */

.login-logo {
    display: block;
    margin: 0 auto 1rem;
    height: 4rem;
    width: auto;
    object-fit: contain;
}

.login-box h1 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.login-box h2 {
    text-align: center;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

/* Removed slideInRight animation for better performance */

.alert-error {
    background: linear-gradient(135deg, rgba(245, 87, 108, 0.1) 0%, rgba(245, 87, 108, 0.05) 100%);
    color: #d32f2f;
    border: 2px solid rgba(245, 87, 108, 0.3);
}

.alert-success {
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.1) 0%, rgba(0, 242, 254, 0.05) 100%);
    color: #0288d1;
    border: 2px solid rgba(79, 172, 254, 0.3);
}

/* Responsive - Tablet */
@media (max-width: 1024px) {
    .container {
        padding: 2rem 1.5rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 1.5rem;
    }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    body {
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
    }

    .container {
        padding: 1.5rem 1rem;
        padding-bottom: calc(1.5rem + env(safe-area-inset-bottom));
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.25rem;
        margin-bottom: 2rem;
    }

    .filters-bar {
        padding: 1rem;
    }

    .filters-group {
        flex-direction: column;
        width: 100%;
    }

    .filters-group select {
        width: 100%;
        min-width: auto;
    }

    .prices-section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .best-price-badge {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }

    .confirm-dialog {
        padding: 1.5rem;
        margin: 1rem;
    }

    .pagination {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .pagination button {
        width: 100%;
    }

    .page-header h2 {
        font-size: 1.75rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .stores-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .nav-container {
        padding: 1rem;
        flex-wrap: wrap;
    }

    .nav-logo {
        height: 2rem;
    }

    .navbar h1 {
        font-size: 1.5rem;
    }

    .nav-links {
        width: 100%;
        justify-content: space-around;
        margin-top: 0.5rem;
        gap: 0.25rem;
    }

    .nav-links a {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
        flex: 1;
        text-align: center;
    }

    .product-card {
        padding: 1.5rem;
        border-radius: 16px;
    }

    .product-header h3 {
        font-size: 1.25rem;
    }

    .price-item {
        flex-wrap: wrap;
        padding: 0.875rem;
        gap: 0.5rem;
    }

    .price-info {
        width: 100%;
        order: 1;
    }

    .price-values {
        width: 100%;
        margin: 0.5rem 0;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .price-actions {
        order: 2;
        width: 100%;
        justify-content: flex-end;
        margin-top: 0.5rem;
    }

    .store-prices-header {
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .store-prices-title-wrapper {
        width: 100%;
    }

    .store-logo-inline {
        width: 28px;
        height: 28px;
    }

    .store-prices-title {
        font-size: 1rem;
    }

    .store-logo-img {
        max-width: 100px;
        max-height: 100px;
    }

    .logo-preview {
        max-width: 150px;
        max-height: 150px;
    }

    .btn {
        padding: 0.875rem 1.25rem;
        font-size: 0.9375rem;
        width: 100%;
        justify-content: center;
    }

    .btn-small {
        width: auto;
    }

    .modal-content {
        width: 95%;
        max-width: none;
        padding: 1.75rem 1.25rem;
        border-radius: 20px;
        max-height: 85vh;
        margin: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
    }

    .modal-content h2 {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

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

    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 1rem 1.25rem;
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .form-actions {
        flex-direction: column;
        gap: 0.75rem;
        margin-top: 2rem;
    }

    .form-actions .btn {
        width: 100%;
    }

    .close {
        right: 1rem;
        top: 1rem;
        width: 32px;
        height: 32px;
        font-size: 1.75rem;
    }

    .login-box {
        padding: 2rem 1.5rem;
        border-radius: 20px;
    }

    .login-logo {
        height: 3rem;
    }

    .login-box h1 {
        font-size: 2rem;
    }

    .login-box h2 {
        font-size: 1.25rem;
    }

    .store-card {
        padding: 1.5rem;
    }

    .store-card h3 {
        font-size: 1.25rem;
    }

    .store-actions {
        flex-direction: column;
        gap: 0.75rem;
    }

    .store-actions .btn {
        width: 100%;
    }
}

/* Extra Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 1rem 0.75rem;
    }

    .page-header h2 {
        font-size: 1.5rem;
    }

    .product-card,
    .store-card {
        padding: 1.25rem;
    }

    .modal-content {
        padding: 1.5rem 1rem;
        width: 98%;
    }

    .nav-links a {
        padding: 0.5rem;
        font-size: 0.8125rem;
    }
}

/* Landscape Mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .modal-content {
        max-height: 90vh;
        padding: 1.5rem;
    }

    .login-box {
        padding: 1.5rem;
    }
}

/* Safe Area for Notched Devices */
@supports (padding: max(0px)) {
    body {
        padding-top: env(safe-area-inset-top);
    }

    .container {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
    }

    .navbar {
        padding-top: env(safe-area-inset-top);
    }

    .nav-container {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
    }

    .modal-content {
        margin-top: env(safe-area-inset-top);
        margin-bottom: env(safe-area-inset-bottom);
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--card-bg);
    border-radius: 10px;
}

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

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

/* ==================== CATEGORIES STYLES ==================== */

.product-title-wrapper {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    flex: 1;
}

.product-title-wrapper h3 {
    margin: 0;
}

.category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    white-space: nowrap;
    margin-top: 0.25rem;
}

.categories-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 400px;
    overflow-y: auto;
    padding: 1rem 0;
}

.category-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--card-glass);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

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

.page-header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* ==================== DARK MODE STYLES ==================== */

body.dark-mode {
    --bg-gradient: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --bg-color: #0f0f1e;
    --card-bg: rgba(26, 26, 46, 0.95);
    --card-glass: rgba(26, 26, 46, 0.8);
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: rgba(102, 126, 234, 0.3);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
}

body.dark-mode .navbar {
    background: rgba(26, 26, 46, 0.95);
    border-bottom-color: rgba(102, 126, 234, 0.3);
}

body.dark-mode .modal-content {
    background: #1a1a2e;
    color: var(--text-primary);
}

body.dark-mode input,
body.dark-mode textarea,
body.dark-mode select {
    background: rgba(22, 33, 62, 0.8);
    color: var(--text-primary);
    border-color: var(--border-color);
}

body.dark-mode input:focus,
body.dark-mode textarea:focus,
body.dark-mode select:focus {
    border-color: var(--primary-color);
    background: rgba(22, 33, 62, 0.95);
}

body.dark-mode .product-card,
body.dark-mode .store-card {
    background: rgba(26, 26, 46, 0.8);
    border-color: var(--border-color);
}

body.dark-mode .filters-bar {
    background: rgba(26, 26, 46, 0.8);
    border-color: var(--border-color);
}

body.dark-mode .confirm-dialog {
    background: #1a1a2e;
    color: var(--text-primary);
}

body.dark-mode .empty-state {
    color: var(--text-secondary);
}

/* ==================== CHART MODAL STYLES ==================== */

.modal-large {
    max-width: 800px;
    width: 95%;
}

.modal-large canvas {
    max-height: 500px;
}

/* ==================== RESPONSIVE UPDATES ==================== */

@media (max-width: 768px) {
    .product-title-wrapper {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-header-actions {
        flex-direction: column;
        width: 100%;
    }

    .page-header-actions .btn {
        width: 100%;
    }

    .category-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .category-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .modal-large {
        max-width: 98%;
        padding: 1.5rem 1rem;
    }
}

/* Favorites */
.favorite-btn {
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.favorite-btn:hover {
    transform: scale(1.1);
}

/* Shopping Lists */
.shopping-list-item {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.shopping-list-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.shopping-list-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.shopping-list-item-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.shopping-list-item-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.shopping-list-item-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.modal-large {
    max-width: 800px;
}

/* Comparison Table */
.comparison-table-container {
    margin-top: 2rem;
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    overflow-x: auto;
    width: 100%;
}

.comparison-table {
    width: 100%;
    min-width: 600px;
    border-collapse: collapse;
    font-size: 0.9375rem;
    background: var(--card-bg);
}

.comparison-table th {
    background: var(--primary-gradient);
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
    white-space: nowrap;
}

.comparison-table th:first-child {
    position: sticky;
    left: 0;
    z-index: 11;
    background: var(--primary-gradient);
}

.comparison-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
    text-align: center;
}

.comparison-table td:first-child {
    position: sticky;
    left: 0;
    background: var(--card-bg);
    z-index: 1;
    text-align: left;
    font-weight: 600;
}

.comparison-table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

.comparison-table tbody tr:hover td:first-child {
    background: rgba(102, 126, 234, 0.05);
}

.best-price-cell {
    background: rgba(79, 172, 254, 0.15) !important;
    font-weight: 600;
}

.best-price-cell:first-child {
    background: rgba(79, 172, 254, 0.15) !important;
}

/* Dropdown Menu */
/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
    z-index: 1000;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.25rem);
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 0.5rem;
    z-index: 10001;
    min-width: 200px;
    animation: fadeInDown 0.2s ease;
    overflow: visible;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .comparison-table {
        font-size: 0.8125rem;
        min-width: 500px;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.5rem;
    }
}