* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 0;
    padding: 1rem;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

h1 {
    text-align: center;
    color: #2563eb;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    font-weight: 700;
}

.credit-footer {
    text-align: center;
    margin-top: 2rem;
    padding: 1rem 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
}

.credit-footer p {
    margin: 0;
    font-weight: 400;
    letter-spacing: 0.5px;
}

h4 {
    text-align: center;
    color: #000000;
    margin-bottom: 0rem;
    font-size: 1rem;
    font-weight: 700;
}


.date-selector {
    margin-bottom: 2rem;
    text-align: center;
}

.date-selector label {
    display: block;
    margin-bottom: 0.5rem;
    color: #1e40af;
    font-weight: 600;
    font-size: 1.1rem;
}

.date-selector input[type="date"] {
    padding: 0.75rem 1rem;
    border: 2px solid #3b82f6;
    border-radius: 8px;
    font-size: 1rem;
    color: #1e40af;
    background: #eff6ff;
    cursor: pointer;
    transition: all 0.2s;
}

.date-selector input[type="date"]:hover {
    border-color: #2563eb;
    background: #dbeafe;
}

.date-selector input[type="date"]:focus {
    outline: none;
    border-color: #2563eb;
    background: #dbeafe;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.main-content {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.menu-section {
    flex: 1;
}

.menu-section h2 {
    color: #1e40af;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 600;
}

#menu-container {
    margin-top: 0;
}

.menu-grid {
    display: block;
}

.menu-item {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1rem;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.menu-item:hover {
    border-color: #3b82f6;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
    transform: translateY(-2px);
}

.menu-item h3 {
    margin: 0 0 0.75rem 0;
    color: #1e293b;
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.3;
    flex: 1;
}

.menu-item p {
    margin: 0.5rem 0;
    color: #475569;
    font-size: 1rem;
}

.menu-item .calories-display {
    color: #2563eb;
    font-weight: 600;
    font-size: 1.1rem;
}

.loading {
    text-align: center;
    color: #64748b;
    padding: 2rem;
    font-size: 1.1rem;
}

.counter-section {
    width: 350px;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
    position: sticky;
    top: 1rem;
}

.counter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.counter-section h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-align: center;
    flex: 1;
}

.mobile-only {
    display: none;
}

.toggle-selection-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    min-height: 36px;
    touch-action: manipulation;
}

.toggle-selection-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.toggle-icon {
    font-size: 0.75rem;
    transition: transform 0.3s;
}

.toggle-icon.rotated {
    transform: rotate(180deg);
}

.selected-items-container {
    margin: 1rem 0;
    min-height: 50px;
    max-height: 400px;
    overflow-y: auto;
    padding-right: 0.5rem;
    transition: all 0.3s ease;
}

.selected-items-container.hidden {
    display: none;
}

#selected-items {
    margin: 0;
}

.selected-items-container::-webkit-scrollbar {
    width: 6px;
}

.selected-items-container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.selected-items-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

.selected-items-container::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

.selected-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    margin: 0.75rem 0;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.selected-item-info {
    flex: 1;
    margin-right: 0.75rem;
}

.selected-item-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: #1e293b;
    font-size: 0.95rem;
}

.selected-item-calories {
    color: #2563eb;
    font-size: 0.85rem;
    font-weight: 600;
}

.remove-btn {
    background: #ef4444;
    color: white;
    border: none;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.2s;
    white-space: nowrap;
}

.remove-btn:hover {
    background: #dc2626;
    transform: scale(1.05);
}

.add-btn {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    margin-top: 0.75rem;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    min-height: 44px;
    touch-action: manipulation;
}

.add-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4);
}

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

.add-btn:disabled {
    background: #94a3b8;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.total-calories {
    margin: 1.5rem 0;
    padding: 1.25rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.total-calories strong {
    color: #1e293b;
    font-size: 1.1rem;
}

#total-calories-value {
    color: #2563eb;
    font-size: 1.8rem;
    font-weight: 700;
    display: block;
    margin-top: 0.5rem;
}

.clear-btn {
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    color: #ef4444;
    border: 2px solid #ef4444;
    padding: 0.875rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s;
}

.clear-btn:hover {
    background: #ef4444;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.empty-selection {
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    padding: 2rem 1rem;
    font-style: italic;
    font-size: 0.95rem;
}


/* Responsive design */
@media (max-width: 968px) {
    .main-content {
        flex-direction: column;
    }

    .counter-section {
        width: 100%;
        position: relative;
        top: 0;
    }

    .container {
        padding: 1.5rem;
    }
}

@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }

    .counter-section {
        width: 100%;
        position: sticky;
        top: 0;
        z-index: 10;
        margin-bottom: 1.5rem;
        order: -1;
    }

    .menu-section {
        order: 1;
    }

    .mobile-only {
        display: flex;
    }

    .menu-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .menu-item {
        padding: 1rem;
        margin-bottom: 0;
    }

    .menu-item h3 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .menu-item .calories-display {
        font-size: 0.95rem;
        margin-bottom: 0.5rem;
    }

    .add-btn {
        padding: 0.65rem 1rem;
        font-size: 0.9rem;
        margin-top: 0.5rem;
        width: 100%;
    }

    .menu-section h2 {
        font-size: 1.3rem;
        margin-bottom: 0.75rem;
    }
}

@media (max-width: 640px) {
    body {
        padding: 0.5rem;
    }

    .container {
        padding: 1rem;
        border-radius: 12px;
    }

    h1 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .date-selector {
        margin-bottom: 1rem;
    }

    .date-selector label {
        font-size: 1rem;
    }

    .date-selector input[type="date"] {
        padding: 0.65rem 0.9rem;
        font-size: 0.95rem;
        width: 100%;
        max-width: 300px;
    }

    .credit-footer {
        margin-top: 1.5rem;
        padding: 0.75rem 0;
        font-size: 0.8rem;
    }

    .menu-grid {
        gap: 0.6rem;
    }

    .menu-item {
        padding: 0.875rem;
    }

    .menu-item h3 {
        font-size: 0.95rem;
    }

    .menu-item .calories-display {
        font-size: 0.9rem;
    }

    .add-btn {
        padding: 0.6rem 0.9rem;
        font-size: 0.85rem;
    }

    .counter-section {
        padding: 1.25rem;
    }

    .counter-section h2 {
        font-size: 1.3rem;
        margin-bottom: 1rem;
    }

    .selected-item {
        padding: 0.875rem;
        margin: 0.5rem 0;
    }

    .selected-item-name {
        font-size: 0.9rem;
    }

    .selected-item-calories {
        font-size: 0.8rem;
    }

    .remove-btn {
        padding: 0.45rem 0.65rem;
        font-size: 0.8rem;
        min-height: 36px;
    }

    .total-calories {
        padding: 1rem;
        margin: 1.25rem 0;
    }

    .total-calories strong {
        font-size: 1rem;
    }

    #total-calories-value {
        font-size: 1.5rem;
    }

    .clear-btn {
        padding: 0.75rem;
        font-size: 0.95rem;
        min-height: 44px;
    }
}