:root {
    --pcc-primary-color: #4CAF50;
    --pcc-primary-light: #E8F5E9;
    --pcc-secondary-color: #388E3C;
    --pcc-text-color: #333;
    --pcc-light-text-color: #666;
    --pcc-background-color: #FFFFFF;
    --pcc-border-color: #E0E0E0;
    --pcc-input-bg: #F9F9F9;
    --pcc-protein-color: #3498db;
    --pcc-carbs-color: #f1c40f;
    --pcc-fat-color: #e74c3c;
    --pcc-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

#panda-calorie-calculator {
    font-family: var(--pcc-font-family);
    background-color: var(--pcc-background-color);
    color: var(--pcc-text-color);
    padding: 2rem;
    max-width: 800px;
    margin: 2rem auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--pcc-border-color);
}

.pcc-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pcc-header h2 {
    color: var(--pcc-secondary-color);
    margin: 0 0 0.5rem 0;
}

.pcc-header p {
    color: var(--pcc-light-text-color);
    margin: 0;
}

#calorie-form fieldset {
    border: 1px solid var(--pcc-border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

#calorie-form legend {
    font-weight: 600;
    color: var(--pcc-primary-color);
    padding: 0 0.5rem;
    margin-left: 1rem;
}

.pcc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.pcc-form-group {
    display: flex;
    flex-direction: column;
}

.pcc-form-group.pcc-full-width {
    grid-column: 1 / -1;
}

.pcc-form-group-double {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 0.5rem;
    align-items: flex-end;
}
.pcc-form-group-double label {
    grid-column: 1 / -1;
    margin-bottom: -0.5rem;
}

.pcc-form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--pcc-light-text-color);
}

.pcc-form-group input,
.pcc-form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--pcc-border-color);
    border-radius: 6px;
    background-color: var(--pcc-input-bg);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.pcc-form-group input:focus,
.pcc-form-group select:focus {
    outline: none;
    border-color: var(--pcc-primary-color);
    box-shadow: 0 0 0 2px var(--pcc-primary-light);
}

.pcc-tooltip {
    display: inline-block;
    width: 16px;
    height: 16px;
    background-color: var(--pcc-border-color);
    color: var(--pcc-light-text-color);
    border-radius: 50%;
    text-align: center;
    line-height: 16px;
    font-size: 12px;
    cursor: help;
    position: relative;
}

.pcc-tooltip:hover::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: white;
    padding: 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    width: 220px;
    text-align: left;
    white-space: pre-wrap;
    z-index: 10;
}

.pcc-button {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    background-color: var(--pcc-primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.pcc-button:hover {
    background-color: var(--pcc-secondary-color);
}
.pcc-button:active {
    transform: translateY(1px);
}

.pcc-hidden {
    display: none !important;
}

#pcc-error-message {
    background-color: #fbe9e7;
    color: #c63737;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    text-align: center;
}

#results-container {
    margin-top: 2rem;
    animation: fadeIn 0.5s ease-in-out;
}

#results-container h3,
.pcc-macros-results h4 {
    text-align: center;
    color: var(--pcc-secondary-color);
    margin-bottom: 1.5rem;
}

.pcc-results-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.pcc-result-card {
    background-color: var(--pcc-primary-light);
    border: 1px solid var(--pcc-border-color);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
}

.pcc-result-card.primary {
    background-color: var(--pcc-primary-color);
    color: white;
}

.pcc-result-card h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    font-weight: 600;
}
.pcc-result-card.primary h4,
.pcc-result-card.primary small {
    color: rgba(255, 255, 255, 0.9);
}

.pcc-result-card p {
    font-size: 2rem;
    font-weight: 700;
    color: var(--pcc-secondary-color);
    margin: 0;
}
.pcc-result-card.primary p {
    color: white;
}
.pcc-result-card small {
    font-size: 0.8rem;
    color: var(--pcc-light-text-color);
}

.pcc-chart-container {
    display: flex;
    height: 40px;
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--pcc-input-bg);
}

.pcc-chart-bar-protein,
.pcc-chart-bar-carbs,
.pcc-chart-bar-fat {
    height: 100%;
    transition: width 0.5s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}
.pcc-chart-bar-protein { background-color: var(--pcc-protein-color); }
.pcc-chart-bar-carbs { background-color: var(--pcc-carbs-color); }
.pcc-chart-bar-fat { background-color: var(--pcc-fat-color); }

.pcc-bar-label {
    opacity: 0;
    transition: opacity 0.5s 0.2s;
}

.pcc-chart-legend {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.pcc-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 0.5rem;
    vertical-align: middle;
}

.pcc-dot.protein { background-color: var(--pcc-protein-color); }
.pcc-dot.carbs { background-color: var(--pcc-carbs-color); }
.pcc-dot.fat { background-color: var(--pcc-fat-color); }


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

@media (max-width: 768px) {
    #panda-calorie-calculator {
        padding: 1.5rem;
    }
    .pcc-grid, .pcc-results-summary {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .pcc-form-group.pcc-full-width {
        grid-column: 1;
    }
}