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

:root {
    --primary-color: #4CAF50;
    --primary-hover: #45a049;
    --secondary-color: #2196F3;
    --secondary-hover: #0b7dda;
    --danger-color: #f44336;
    --danger-hover: #da190b;
    --background: #f5f5f5;
    --card-background: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #dddddd;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.15);
}

body.dark-mode {
    --background: #1a1a1a;
    --card-background: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: var(--card-background);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.btn-icon {
    background: transparent;
    border: 2px solid var(--border-color);
    padding: 10px 15px;
    font-size: 1.2rem;
}

.list-filter-tabs {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.tab-btn {
    padding: 8px 16px;
    border: 2px solid var(--border-color);
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

h1 {
    font-size: 2rem;
    margin-bottom: 20px;
    text-align: center;
}

.list-selector {
    display: flex;
    gap: 10px;
    align-items: center;
}

#listSelector {
    flex: 1;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: white;
    cursor: pointer;
    transition: border-color 0.3s;
}

#listSelector:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

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

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

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

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

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
}

main {
    background: var(--card-background);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.list-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.list-controls h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.list-actions {
    display: flex;
    gap: 10px;
}

.add-item-section {
    margin-bottom: 30px;
    padding: 20px;
    background: var(--background);
    border-radius: 8px;
}

.add-item-section h3 {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.form-group {
    margin-bottom: 10px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 2fr 1.5fr auto;
    gap: 10px;
    align-items: end;
}

.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.3s;
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.quick-add-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--border-color);
}

.quick-add-section h4 {
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.quick-add-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.quick-add-btn {
    padding: 6px 12px;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s;
}

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

.favorite-btn {
    background: #fff9c4;
    border-color: #f57f17;
}

.favorite-btn:hover {
    background: #f57f17;
    color: white;
}

.no-favorites {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 0.9rem;
}

.filter-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background: var(--background);
    border-radius: 8px;
}

.filter-section label {
    font-weight: 500;
    margin-right: 10px;
}

.filter-section select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
}

.stats {
    font-weight: 500;
    color: var(--text-secondary);
}

.items-section {
    margin-top: 20px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.bulk-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.item-name-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.priority-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.priority-badge.high {
    background: #fff3cd;
    color: #856404;
}

.priority-badge.low {
    background: #e7f3ff;
    color: #004085;
}

.item-notes {
    margin-top: 5px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
}

.item-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.item-favorite {
    padding: 6px 10px;
    background: transparent;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    transition: transform 0.2s;
}

.item-favorite:hover {
    transform: scale(1.2);
}

.bulk-select-checkbox {
    width: 20px;
    height: 20px;
    margin-right: 15px;
    cursor: pointer;
}

.section-header h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
}

.items-list {
    list-style: none;
    margin-bottom: 30px;
}

.item {
    display: flex;
    align-items: center;
    padding: 15px;
    margin-bottom: 10px;
    background: var(--background);
    border-radius: 8px;
    transition: all 0.3s;
}

.item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.item.purchased {
    opacity: 0.6;
}

.item.purchased .item-name {
    text-decoration: line-through;
}

.item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 15px;
    cursor: pointer;
}

.item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.item-name {
    font-size: 1.1rem;
    font-weight: 500;
}

.item-details {
    display: flex;
    gap: 15px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.item-quantity {
    font-weight: 500;
}

.category-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

.category-Produce { background: #e8f5e9; color: #2e7d32; }
.category-Dairy { background: #e3f2fd; color: #1565c0; }
.category-Meat { background: #fce4ec; color: #c2185b; }
.category-Bakery { background: #fff3e0; color: #e65100; }
.category-Frozen { background: #e0f2f1; color: #00695c; }
.category-Pantry { background: #f3e5f5; color: #6a1b9a; }
.category-Beverages { background: #fff9c4; color: #f57f17; }
.category-Snacks { background: #ffe0b2; color: #e64a19; }
.category-Other { background: #eceff1; color: #455a64; }

.item-delete {
    padding: 8px 12px;
    background: transparent;
    color: var(--danger-color);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s;
}

.item-delete:hover {
    background: var(--danger-color);
    color: white;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--card-background);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.empty-state p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.empty-state p:first-child {
    font-size: 1.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.completed-items {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid var(--border-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    header {
        padding: 20px;
    }

    h1 {
        font-size: 1.5rem;
    }

    main {
        padding: 20px;
    }

    .list-selector {
        flex-direction: column;
    }

    #listSelector {
        width: 100%;
    }

    .list-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .filter-section {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .filter-section select {
        width: 100%;
    }

    .item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .item input[type="checkbox"] {
        align-self: flex-start;
    }

    .item-delete {
        align-self: flex-end;
    }
}

/* Shopping Mode Overlay */
.shopping-mode-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--card-background);
    z-index: 1000;
    overflow-y: auto;
    padding: 20px;
}

.shopping-mode-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: var(--primary-color);
    color: white;
    border-radius: 12px;
    margin-bottom: 20px;
    position: sticky;
    top: 20px;
    z-index: 10;
    box-shadow: var(--shadow-hover);
}

.shopping-mode-header h2 {
    font-size: 1.8rem;
    margin: 0;
}

.shopping-mode-header-actions {
    display: flex;
    gap: 10px;
}

.btn-exit {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
}

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

.btn-super-fullscreen {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    padding: 12px 20px;
    font-size: 1.2rem;
    font-weight: 600;
}

.btn-super-fullscreen:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Super Full Screen Mode */
.shopping-mode-overlay.super-fullscreen {
    padding: 0;
}

.shopping-mode-overlay.super-fullscreen .shopping-mode-header {
    display: none;
}

.shopping-mode-overlay.super-fullscreen .shopping-mode-mini-header {
    display: flex !important;
}

.shopping-mode-overlay.super-fullscreen .shopping-mode-content {
    max-width: 100%;
    padding: 0;
    margin: 0;
    padding-top: 60px;
}

.shopping-mode-overlay.super-fullscreen .shopping-mode-stats {
    display: none;
}

.shopping-mode-overlay.super-fullscreen .shopping-mode-completed {
    display: none;
}

.shopping-mode-overlay.super-fullscreen .shopping-mode-items {
    padding: 10px;
}

.shopping-mode-overlay.super-fullscreen .shopping-item {
    padding: 30px 20px;
    margin-bottom: 10px;
    border-radius: 0;
    border-left: 5px solid var(--primary-color);
}

.shopping-mode-overlay.super-fullscreen .shopping-item input[type="checkbox"] {
    width: 40px;
    height: 40px;
    margin-right: 25px;
}

.shopping-mode-overlay.super-fullscreen .item-name {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.shopping-mode-overlay.super-fullscreen .item-meta {
    font-size: 1.2rem;
    gap: 20px;
}

.shopping-mode-mini-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--primary-color);
    color: white;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1001;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.shopping-mode-mini-header span {
    font-size: 1rem;
    font-weight: 600;
}

.btn-exit-mini {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    padding: 8px 16px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
}

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

.mini-header-actions {
    display: flex;
    gap: 10px;
}

.shopping-mode-content {
    max-width: 600px;
    margin: 0 auto;
}

.shopping-mode-stats {
    text-align: center;
    font-size: 1.3rem;
    font-weight: 600;
    padding: 20px;
    margin-bottom: 20px;
    background: var(--background);
    border-radius: 12px;
    color: var(--primary-color);
}

.shopping-mode-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.shopping-mode-items .shopping-item {
    display: flex;
    align-items: center;
    padding: 20px;
    margin-bottom: 15px;
    background: var(--background);
    border-radius: 12px;
    transition: all 0.3s;
    border: 3px solid transparent;
}

.shopping-mode-items .shopping-item:hover {
    border-color: var(--primary-color);
    transform: scale(1.02);
    box-shadow: var(--shadow-hover);
}

.shopping-mode-items .shopping-item.purchased {
    opacity: 0.5;
    background: #f0f0f0;
}

.shopping-mode-items .shopping-item input[type="checkbox"] {
    width: 30px;
    height: 30px;
    margin-right: 20px;
    cursor: pointer;
    flex-shrink: 0;
}

.shopping-mode-items .item-info {
    flex: 1;
}

.shopping-mode-items .item-name {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.shopping-mode-items .shopping-item.purchased .item-name {
    text-decoration: line-through;
}

.shopping-mode-items .item-meta {
    display: flex;
    gap: 15px;
    font-size: 1rem;
    color: var(--text-secondary);
}

.shopping-mode-items .item-quantity {
    font-weight: 600;
    color: var(--primary-color);
}

.shopping-mode-completed {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 3px solid var(--border-color);
}

.shopping-mode-completed h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-secondary);
    text-align: center;
}

.shopping-mode-completed .shopping-mode-items {
    opacity: 0.7;
}

.shopping-mode-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    font-size: 1.2rem;
}

/* Mobile optimizations for shopping mode */
@media (max-width: 768px) {
    .shopping-mode-overlay {
        padding: 10px;
    }

    .shopping-mode-header {
        flex-direction: column;
        gap: 15px;
        top: 10px;
    }

    .shopping-mode-header h2 {
        font-size: 1.4rem;
        text-align: center;
    }

    .btn-exit {
        width: 100%;
    }

    .shopping-mode-items .shopping-item {
        padding: 15px;
    }

    .shopping-mode-items .item-name {
        font-size: 1.2rem;
    }

    .shopping-mode-items .item-meta {
        flex-direction: column;
        gap: 5px;
    }
}

/* Smooth animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.item {
    animation: fadeIn 0.3s ease-out;
}

.shopping-item {
    animation: fadeIn 0.3s ease-out;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: var(--card-background);
    border-radius: 12px;
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-hover);
}

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

.modal-header h2 {
    margin: 0;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal-body {
    padding: 20px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.template-actions {
    margin-bottom: 20px;
}

.templates-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.template-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: var(--background);
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.template-info h4 {
    margin: 0 0 5px 0;
}

.template-info p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.template-actions {
    display: flex;
    gap: 8px;
}

#importData {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: monospace;
    font-size: 0.9rem;
    resize: vertical;
    margin-bottom: 15px;
}

/* Print Styles */
@media print {
    .no-print,
    header,
    .list-controls,
    .add-item-section,
    .filter-section,
    .section-header button,
    .item-actions {
        display: none !important;
    }
    
    .item {
        break-inside: avoid;
        page-break-inside: avoid;
    }
    
    body {
        background: white;
        color: black;
    }
}