:root {
    --primary-color: #4A90E2;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-color: #2c3e50;
    --border-color: #e9ecef;
    --shadow-light: 0 2px 4px rgba(0,0,0,0.1);
    --warning-color: #f39c12;
}

/* Dark Theme */
[data-theme="dark"] {
    --background-color: #1a1a1a;
    --card-background: #2d2d2d;
    --text-color: #ffffff;
    --border-color: #404040;
    --shadow-light: 0 2px 4px rgba(0,0,0,0.3);
}

[data-theme="dark"] .modal {
    background: var(--card-background);
    color: var(--text-color);
}

[data-theme="dark"] .modal-header {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .modal h2,
[data-theme="dark"] .modal h3 {
    color: var(--text-color);
}

[data-theme="dark"] .modal input,
[data-theme="dark"] .modal select {
    background: var(--background-color);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .settings-section {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .category-item {
    background: var(--background-color);
}

[data-theme="dark"] .photo-upload-area {
    border-color: var(--border-color);
}

/* Colorful Theme */
[data-theme="colorful"] {
    --primary-color: #ff6b6b;
    --success-color: #4ecdc4;
    --background-color: #fff5f5;
    --card-background: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    padding: 20px;
    max-width: 600px;
    margin: 0 auto;
    transition: background-color 0.3s, color 0.3s;
}

.header {
    position: relative;
    text-align: center;
    margin-bottom: 30px;
    background: var(--card-background);
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow-light);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.header h1 {
    color: var(--primary-color);
    font-size: 24px;
    margin-bottom: 10px;
}

.user-info {
    font-size: 14px;
    color: var(--success-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.user-info .user-initial {
    display: inline-block;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    color: white;
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    line-height: 24px;
    margin: 0;
}

.settings-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.3s;
    color: var(--text-color);
}

.settings-btn:hover {
    opacity: 1;
}

.add-item-form {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.add-item-form input[type="text"],
.add-item-form select {
    flex: 1;
    min-width: 200px;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    background-color: var(--card-background);
    color: var(--text-color);
}

/* Select dropdown styling with proper arrow spacing */
.add-item-form select,
#itemCategory {
    padding-right: 40px;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 12px;
    appearance: none;
}

.add-item-form input[type="text"]:focus,
.add-item-form select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.add-item-form button,
#addCategoryBtn {
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Rimuovo l'emoji e aggiungo un'icona SVG più standard */
.add-item-form button::before,
#addCategoryBtn::before {
    content: '';
    display: inline-block;
    width: 18px;
    height: 18px;
    margin-right: 8px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    vertical-align: middle;
}

.add-item-form button,
#addCategoryBtn {
    content: 'Add';  /* Sostituisce il testo con emoji */
}

.category-filters {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    overflow-x: auto;
    padding-bottom: 5px;
}

.category-btn {
    padding: 8px 16px;
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    white-space: nowrap;
    transition: all 0.3s ease;
    color: var(--text-color);
}

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

.color-picker-container {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.color-picker-container h4 {
    margin-bottom: 10px;
    font-size: 16px;
    font-weight: 500;
}

.color-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.color-option {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform 0.2s, border-color 0.2s;
}

.color-option:hover {
    transform: scale(1.1);
}

.color-option.selected {
    border-color: var(--text-color);
    box-shadow: 0 0 0 2px var(--card-background);
}

.shopping-list {
    background: var(--card-background);
    border-radius: 12px;
    box-shadow: var(--shadow-light);
    overflow: hidden;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.list-header {
    padding: 15px 20px;
    background: var(--background-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.toggle-all-btn {
    padding: 6px 12px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.toggle-all-btn:hover {
    background: #357abd;
}

.shopping-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    transition: all 0.3s ease;
    opacity: 1;
    transform: translateX(0);
    padding-right: 65px; /* Space for user avatar and delete button */
}

.shopping-item.entering {
    opacity: 0;
    transform: translateY(-10px);
}

.shopping-item.removing {
    opacity: 0;
    transform: translateX(100%);
}

.shopping-item:last-child {
    border-bottom: none;
}

.shopping-item.completed {
    background: var(--background-color);
    opacity: 0.6;
}

.shopping-item.completed .item-name {
    text-decoration: line-through;
    color: #6c757d;
}

.shopping-item input[type="checkbox"] {
    margin-right: 15px;
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.item-content {
    flex: 1;
    cursor: pointer;
}

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

.item-details {
    font-size: 14px;
    color: #6c757d;
    display: flex;
    gap: 15px;
    margin-top: 2px;
    align-items: center;
}

.category-tag {
    background: var(--border-color);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-color);
}

.item-note {
    color: var(--primary-color);
    font-style: italic;
    margin-left: 10px;
}

.item-photo-indicator {
    display: inline-block;
    margin-left: 10px;
    font-size: 16px;
    cursor: pointer;
}

/* User avatar positioned correctly */
.shopping-item .user-initial {
    display: inline-block;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    color: white;
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    line-height: 28px;
    position: absolute;
    right: 45px;
    top: 50%;
    transform: translateY(-50%);
    margin: 0;
}

/* Delete button with improved mobile accessibility */
.delete-btn {
    background: var(--danger-color);
    color: white;
    border: none;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all 0.3s ease;
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
}

.shopping-item:hover .delete-btn {
    opacity: 1;
}

.delete-btn:hover {
    background: #c0392b;
    transform: translateY(-50%) scale(1.1);
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #6c757d;
}

/* Typing Indicator */
.typing-indicator {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: var(--card-background);
    border: 1px solid var(--border-color);
    padding: 10px 15px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-light);
    animation: fadeIn 0.3s ease-out;
}

.typing-indicator > * {
    margin: 0; /* Rimuove margini extra */
}

/* Notification */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--success-color);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-light);
    animation: slideIn 0.3s ease-out;
    z-index: 1001;
    cursor: grab;
    touch-action: pan-x;
}

.notification:active {
    cursor: grabbing;
}

.notification > * {
    margin: 0;
}

.typing-indicator .user-initial,
.notification .user-initial {
    display: inline-block;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    color: white;
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    line-height: 24px;
    margin-right: 8px; /* Spazio controllato tra icona e testo */
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

@keyframes slideOut {
    from { transform: translateX(0); }
    to { transform: translateX(100%); }
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease-out;
}

.modal {
    background: var(--card-background);
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease-out;
    color: var(--text-color);
}

@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-content {
    padding: 30px;
    text-align: center;
}

.modal-content h2 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.modal-content p {
    color: #6c757d;
    margin-bottom: 25px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal h2 {
    margin: 0;
    color: var(--text-color);
}

.close-btn {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    opacity: 0.7;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
}

.close-btn:hover {
    opacity: 1;
}

/* Improved modal input and button height */
.modal input[type="text"],
.modal select {
    width: 100%;
    padding: 10px 12px;
    margin-bottom: 20px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    min-height: 40px;
    background-color: var(--card-background);
    color: var(--text-color);
}

.modal input[type="text"]:focus,
.modal select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.modal button {
    padding: 10px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    line-height: 1.4;
    min-height: 40px;
}

.modal button:hover {
    background: #357abd;
}

/* Settings Styles */
.settings-section {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.settings-section:last-child {
    border-bottom: none;
}

.settings-section h3 {
    margin-bottom: 15px;
    font-size: 18px;
    color: var(--text-color);
}

.theme-selector {
    display: flex;
    gap: 10px;
}

.theme-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--card-background);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.toggle-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toggle {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.toggle input {
    display: none;
}

.slider {
    width: 44px;
    height: 24px;
    background: var(--border-color);
    border-radius: 12px;
    position: relative;
    margin-right: 12px;
    transition: background 0.3s;
}

.slider::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: white;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: transform 0.3s;
}

.toggle input:checked + .slider {
    background: var(--primary-color);
}

.toggle input:checked + .slider::after {
    transform: translateX(20px);
}

.drag-hint {
    font-size: 14px;
    color: #6c757d;
    margin-bottom: 10px;
}

.category-manager {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.category-manager input {
    flex: 1;
    padding: 8px 12px;
    height: 34px;
    line-height: 1;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    margin-bottom: 0;
    background-color: var(--card-background);
    color: var(--text-color);
}

.category-manager #newCategoryEmoji {
    text-align: center;
    width: 60px;
    height: 34px;
}

.category-manager button {
    padding: 8px 16px;
    font-size: 14px;
    background: var(--success-color);
    height: 34px;
    line-height: 1;
}

.category-manager button:hover {
    background: #229955;
}

.category-list {
    max-height: 300px;
    overflow-y: auto;
}

.category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
    margin-bottom: 8px;
    background: var(--background-color);
    border-radius: 6px;
    transition: background-color 0.3s ease;
    cursor: default;
    user-select: none;
    position: relative;
}

.category-item.editing {
    background: var(--border-color);
    padding-right: 50px; /* Make room for save button */
}

.category-item.sortable-ghost {
    opacity: 0.5;
}

.category-item:hover {
    background: var(--border-color);
}

.category-item-content {
    display: flex;
    align-items: center;
    flex: 1;
    overflow: hidden;
}

.drag-handle {
    margin-right: 15px;  
    cursor: move;
    color: var(--text-color);
    opacity: 0.5;
    font-size: 18px;
    padding: 10px;
    margin: -10px 15px -10px -10px;
    touch-action: none;
}

.category-name {
    flex: 1;
    font-size: 14px;
    color: var(--text-color);
}

.category-name-input {
    flex: 1;
    font-size: 14px;
    padding: 6px 10px;
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    background: var(--card-background);
    color: var(--text-color);
    margin-right: 10px;
    margin-top: 0; 
    margin-bottom: 0!important;
    height: 28px;
    line-height: 1.4;
}

.category-edit-actions {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
}

.category-save-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    padding: 6px;
    color: var(--success-color);
    transition: opacity 0.2s;  /* Cambiato da transform a opacity */
}

.category-save-btn:hover {
    opacity: 0.8;  /* Cambiato da scale(1.2) a opacity */
}

.category-delete-btn {
    background: none;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    font-size: 18px;
    padding: 4px;
    transition: opacity 0.2s;  /* Cambiato da transform a opacity */
}

.category-delete-btn:hover {
    opacity: 0.8;  /* Cambiato da scale(1.2) a opacity */
}

/* Danger Zone */
.danger-zone {
    background: rgba(231, 76, 60, 0.05);
}

.danger-btn {
    background: var(--danger-color);
    color: white;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
}

.danger-btn:hover {
    background: #c0392b;
}

.danger-note {
    font-size: 12px;
    color: var(--danger-color);
    margin-top: 5px;
}

/* Item Detail Modal */
.item-detail-section {
    margin-bottom: 25px;
}

.item-detail-section h3 {
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.photo-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.photo-upload-area:hover {
    border-color: var(--primary-color);
    background: var(--background-color);
}

.photo-upload-btns {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 15px;
}

.photo-upload-btn {
    padding: 10px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.photo-upload-btn:hover {
    background: #357abd;
}

#photoPreview {
    max-width: 100%;
    margin-top: 15px;
}

#photoPreview img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow-light);
}

.delete-photo-btn {
    margin-top: 15px;
    padding: 8px 16px;
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.delete-photo-btn:hover {
    background: #c0392b;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 30px;
}

.primary-btn {
    background: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.secondary-btn {
    background: var(--border-color);
    color: var(--text-color);
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

/* Responsive Design */
@media (max-width: 768px) {
    .delete-btn {
        opacity: 1; /* Always show on mobile */
        right: 15px;
    }
    
    .drag-handle {
        font-size: 22px;
        padding: 15px;
        margin: -15px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .add-item-form {
        flex-direction: column;
    }

    .add-item-form input[type="text"],
    .add-item-form select {
        min-width: 100%;
    }

    .category-filters {
        gap: 5px;
    }

    .category-btn {
        padding: 6px 12px;
        font-size: 13px;
    }

    .shopping-item {
        padding: 12px 15px;
    }

    .delete-btn {
        width: 26px;
        height: 26px;
        right: 15px;
    }

    .shopping-item .user-initial {
        width: 26px;
        height: 26px;
        right: 45px;
        line-height: 26px;
    }

    .modal {
        max-width: 95%;
    }

    .category-manager {
        flex-wrap: wrap;
    }

    .category-manager input {
        min-width: calc(50% - 5px);
    }

    .category-manager #newCategoryEmoji {
        min-width: auto;
        width: 60px;
    }

    .typing-indicator {
        bottom: 10px;
        left: 10px;
        font-size: 14px;
    }

    .notification {
        top: 10px;
        right: 10px;
        font-size: 14px;
    }
    
    .photo-upload-btns {
        flex-direction: column;
        align-items: stretch;
    }
    
    .photo-upload-btn {
        width: 100%;
    }
}