/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem 1rem;
    min-height: 100vh;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 2rem;
    color: white;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Input section */
.input-section {
    margin-bottom: 2rem;
}

.input-container {
    display: flex;
    gap: 0.75rem;
    background: white;
    padding: 0.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

#itemInput {
    flex: 1;
    border: none;
    padding: 1rem;
    font-size: 1rem;
    border-radius: 8px;
    outline: none;
    background: #f8f9fa;
    transition: background-color 0.2s ease;
}

#itemInput:focus {
    background: #fff;
    box-shadow: 0 0 0 2px #667eea;
}

.voice-btn {
    background: #10b981;
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
}

.voice-btn:hover {
    background: #059669;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.voice-btn:active {
    transform: translateY(0);
}

.voice-btn.recording {
    background: #ef4444;
    animation: pulse 1s infinite;
}

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

.voice-btn.processing {
    background: #f59e0b;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.add-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.add-btn:hover {
    background: #5a67d8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.add-btn:active {
    transform: translateY(0);
}

.btn-icon {
    font-size: 1.2rem;
    font-weight: bold;
}

/* List controls */
.list-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    background: white;
    padding: 1rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    flex-wrap: wrap;
    gap: 1rem;
}

.item-count {
    font-weight: 500;
    color: #667eea;
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 2px solid #e2e8f0;
    background: transparent;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.filter-btn.active,
.filter-btn:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.settings-section {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.settings-btn {
    background: #6b7280;
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s ease;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.settings-btn:hover {
    background: #4b5563;
    transform: translateY(-1px);
}

.clear-btn {
    background: #ef4444;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.clear-btn:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

/* Shopping list */
.list-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.shopping-list {
    list-style: none;
}

.shopping-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid #f1f5f9;
    transition: all 0.3s ease;
    animation: slideIn 0.3s ease;
}

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

.shopping-item:hover {
    background: #f8fafc;
}

.shopping-item.completed {
    background: #f0fdf4;
    opacity: 0.7;
}

.shopping-item.completed .item-text {
    text-decoration: line-through;
    color: #6b7280;
}

.item-checkbox {
    margin-right: 1rem;
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: #10b981;
}

.item-text {
    flex: 1;
    font-size: 1rem;
    transition: all 0.2s ease;
}

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

.edit-btn,
.delete-btn {
    padding: 0.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.edit-btn {
    background: #f59e0b;
    color: white;
}

.edit-btn:hover {
    background: #d97706;
}

.delete-btn {
    background: #ef4444;
    color: white;
}

.delete-btn:hover {
    background: #dc2626;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: #6b7280;
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #374151;
}

.empty-state p {
    font-size: 1rem;
}

.hidden {
    display: none !important;
}

/* Modal styles */
.modal {
    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;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.modal-header h3 {
    margin: 0;
    color: #374151;
    font-size: 1.25rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #6b7280;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.close-btn:hover {
    background: #f3f4f6;
    color: #374151;
}

.modal-body {
    padding: 1.5rem;
}

.modal-body p {
    margin-bottom: 1rem;
    color: #6b7280;
    line-height: 1.6;
}

.api-key-input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
    margin-bottom: 1rem;
}

.api-key-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.modal-footer {
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.save-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.save-btn:hover {
    background: #5a67d8;
}

.get-key-link {
    color: #667eea;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.get-key-link:hover {
    color: #5a67d8;
    text-decoration: underline;
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.removing {
    animation: slideOut 0.3s ease forwards;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 1rem 0.5rem;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .input-container {
        flex-direction: column;
    }
    
    .add-btn {
        justify-content: center;
    }
    
    .list-controls {
        flex-direction: column;
        text-align: center;
    }
    
    .filter-buttons {
        justify-content: center;
    }
    
    .btn-text {
        display: none;
    }
    
    .shopping-item {
        padding: 0.75rem;
    }
    
    .modal-content {
        margin: 1rem;
        width: calc(100% - 2rem);
    }
    
    .modal-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .save-btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .settings-section {
        flex-direction: column;
        gap: 0.5rem;
    }
}