/* --- GLOBAL STYLES --- */
:root {
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --blue-100: #dbeafe;
    --blue-800: #1e40af;
    --blue-50: #eff6ff;
    --blue-200: #bfdbfe;

    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334152;
    --slate-800: #1e293b;
    --slate-900: #0f172a;

    --white: #ffffff;
    
    --amber-50: #fffbeb;
    --amber-200: #fde68a;
    --amber-400: #fbbf24;
    --amber-500: #f59e0b;
    --amber-900: #78350f;

    --emerald-50: #ecfdf5;
    --emerald-200: #a7f3d0;
    --emerald-400: #34d399;
    --emerald-600: #059669;
    --emerald-900: #064e3b;

    --rose-400: #fb7185;
    --rose-500: #f43f5e;
    --rose-900: #881337;
}

.dog-calorie-calculator-container {
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    color: var(--slate-800);
    max-width: 1290px;
    margin-left: auto;
    margin-right: auto;
}

*, *:before, *:after {
    box-sizing: inherit;
}

/* --- HEADER --- */
.calculator-header {
    text-align: center;
    margin-bottom: 2rem;
}

.calculator-subtitle {
    margin-top: 0.75rem;
    font-size: 1.125rem;
    color: var(--slate-600);
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
}


/* --- LAYOUT --- */
.calculator-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .calculator-grid {
        grid-template-columns: repeat(5, 1fr);
    }
    .calculator-form-container {
        grid-column: span 3 / span 3;
    }
    .results-display-container {
        grid-column: span 2 / span 2;
    }
    .results-display-card {
        position: sticky;
        top: 2rem;
    }
}

/* --- FORM STYLES --- */
.calculator-form-card, .results-display-card {
    background-color: var(--white);
    padding: 1rem;
    border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    border: 1px solid var(--slate-200);
}

.form-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--slate-900);
    margin: 0 0 1.5rem 0;
}

.form-section {
    margin-bottom: 1.5rem;
}

.form-section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--slate-800);
    margin: 0 0 1rem 0;
    display: flex;
    align-items: center;
}
.form-section-title svg {
    margin-right: 0.5rem;
    color: var(--blue-600);
}

.form-section-content {
    padding-left: 1rem;
}

.form-input, .form-select {
    width: 100%;
    padding: 0.6rem 1rem;
    border: 1px solid var(--slate-300);
    border-radius: 0.5rem;
    transition: all 0.2s ease-in-out;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.5);
}

/* Weight Input Group */
.weight-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
@media (min-width: 640px) {
    .weight-input-group {
        flex-direction: row;
        align-items: center;
    }
    .weight-input-group .form-input {
        width: 50%;
    }
    .unit-toggle {
        width: auto;
    }
}
.unit-toggle {
    display: flex;
    width: 100%;
    border-radius: 0.5rem;
    background-color: var(--slate-100);
    padding: 0.25rem;
}
.unit-button {
    flex-grow: 1;
    border: none;
    padding: 0.375rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    background-color: transparent;
    color: var(--slate-600);
}
.unit-button:hover {
    background-color: var(--slate-200);
}
.unit-button.active {
    background-color: var(--blue-600);
    color: var(--white);
    box-shadow: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px 0 rgba(0,0,0,0.06);
}

/* Body Condition Score (BCS) Selector */
.bcs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}
.bcs-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--slate-700);
}
.bcs-value-badge {
    padding: 0.125rem 0.5rem;
    background-color: var(--blue-100);
    color: var(--blue-800);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 9999px;
}
.bcs-category-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.25rem;
    border-radius: 0.5rem;
    background-color: var(--slate-100);
    padding: 0.25rem;
    margin-bottom: 0.75rem;
    border: 1px solid var(--slate-200);
}
.bcs-category-button {
    padding: 0.375rem 0.5rem;
    border: none;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    color: var(--slate-600);
    background: transparent;
}
.bcs-category-button:hover {
    background-color: var(--slate-200);
}
.bcs-category-button.thin.active {
    background-color: var(--amber-400); color: var(--amber-900);
}
.bcs-category-button.ideal.active {
    background-color: var(--emerald-400); color: var(--emerald-900);
}
.bcs-category-button.heavy.active {
    background-color: var(--rose-400); color: var(--rose-900);
}
.bcs-slider-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.bcs-slider-label {
    font-size: 0.75rem;
    color: var(--slate-500);
    width: 0.75rem;
    text-align: center;
}
.bcs-slider, .treats-slider {
    width: 100%;
    height: 0.5rem;
    background: var(--slate-200);
    border-radius: 9999px;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}
.bcs-slider::-webkit-slider-thumb, .treats-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 1.25rem;
    height: 1.25rem;
    background: var(--blue-600);
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 0 0 2px var(--blue-600);
}
.bcs-description {
    margin-top: 0.75rem;
    background-color: var(--slate-50);
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid var(--slate-200);
    text-align: center;
}
.bcs-description-title {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--slate-800);
    margin: 0;
}
.bcs-description-text {
    font-size: 0.75rem;
    color: var(--slate-600);
    margin: 0.25rem 0 0 0;
}

/* Lifestyle */
.lifestyle-controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--slate-700);
    margin-bottom: 0.25rem;
}
.form-checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    color: var(--slate-700);
}
.form-checkbox {
    height: 1.25rem;
    width: 1.25rem;
    border-radius: 0.25rem;
    border-color: var(--slate-300);
    color: var(--blue-600);
}
.form-checkbox:focus {
    ring: var(--blue-500);
}

/* Treats Allowance */
.treats-slider-markers {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--slate-500);
}
.form-help-text {
    font-size: 0.75rem;
    color: var(--slate-500);
    padding-top: 0.25rem;
    margin: 0;
}

/* --- RESULTS DISPLAY --- */
.results-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--slate-900);
    margin: 0 0 0.25rem 0;
}

.results-subtitle {
    color: var(--slate-600);
    margin: 0 0 1.5rem 0;
}

.result-cards-grid {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.result-card {
    padding: 1rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    color: var(--white);
}

.result-card-icon-wrapper {
    margin-right: 1rem;
    padding: 0.5rem;
    border-radius: 9999px;
    background-color: rgba(0,0,0,0.1);
}

.result-card-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255,255,255,0.9);
    margin: 0;
}
.result-card-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin: 0;
}
.result-card-subtext {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.8);
    margin: 0;
}
.total-calories-card {
    background-color: var(--blue-600);
}
.ideal-weight-card {
    background-color: var(--emerald-600);
}


/* Pie Chart */
.breakdown-section {
    margin: 1.5rem 0;
}
.breakdown-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--slate-800);
    margin: 0 0 0.5rem 0;
}
.pie-chart-container {
    height: 12rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.pie-chart {
    width: 7rem;
    height: 7rem;
    border-radius: 50%;
    margin-bottom: 1rem;
}
.pie-chart-legend {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.legend-color-box {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
}
.pie-chart-placeholder {
    text-align: center;
    color: var(--slate-500);
    padding: 3rem 0;
}

/* Recommendation Box */
.recommendation-box {
    padding: 1rem;
    border-radius: 0.5rem;
    margin: 1.5rem 0;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    border: 1px solid;
}
.recommendation-icon {
    flex-shrink: 0;
    padding-top: 0.125rem;
}
.recommendation-title {
    font-weight: 600;
    color: var(--slate-800);
    margin: 0;
}
.recommendation-message {
    font-size: 0.875rem;
    color: var(--slate-600);
    margin: 0.25rem 0 0 0;
}
/* States */
.recommendation-box.ideal {
    background-color: var(--emerald-50);
    border-color: var(--emerald-200);
}
.recommendation-box.ideal .recommendation-icon svg { color: var(--emerald-600); }

.recommendation-box.non-ideal {
    background-color: var(--amber-50);
    border-color: var(--amber-200);
}
.recommendation-box.non-ideal .recommendation-icon svg { color: var(--amber-500); }


/* Feeding Guide */
.feeding-guide {
    background-color: var(--blue-50);
    border: 1px solid var(--blue-200);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1.5rem;
}
.feeding-guide-title {
    font-weight: 600;
    color: var(--slate-800);
    margin: 0 0 0.75rem 0;
    font-size: 1.125rem;
    display: flex;
    align-items: center;
}
.feeding-guide-title svg {
    margin-right: 0.5rem;
    color: var(--blue-600);
}
.feeding-guide-intro {
    font-size: 0.875rem;
    color: var(--slate-600);
    margin-bottom: 1rem;
}
.feeding-guide-inputs {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
@media (min-width: 640px) {
    .feeding-guide-inputs {
        flex-direction: row;
        align-items: center;
    }
}
.kcal-input-wrapper {
    position: relative;
    flex-grow: 1;
}
.kcal-input-wrapper .form-input {
    padding-top: 1.25rem;
}
.kcal-input-label {
    position: absolute;
    font-size: 0.875rem;
    color: var(--slate-500);
    top: 0.5rem;
    left: 1rem;
    transition: all 0.2s;
    background-color: var(--blue-50);
    padding: 0 0.25rem;
}
.kcal-input-wrapper .form-input:focus + .kcal-input-label,
.kcal-input-wrapper .form-input:not(:placeholder-shown) + .kcal-input-label {
    top: -0.5rem;
    font-size: 0.75rem;
    color: var(--blue-600);
}
.feeding-unit-toggle {
    display: flex;
    border-radius: 0.5rem;
    background-color: var(--slate-200);
    padding: 0.25rem;
}
.feeding-unit-button {
    border: none;
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    background-color: transparent;
    color: var(--slate-600);
}
.feeding-unit-button.active {
    background-color: var(--white);
    color: var(--slate-900);
    box-shadow: 0 1px 2px 0 rgba(0,0,0,0.05);
}
.feeding-results-container {
    margin-top: 1rem;
    text-align: center;
    background-color: var(--white);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--slate-200);
}
.feeding-amount {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--blue-600);
    margin: 0.25rem 0;
}
.feeding-unit {
    font-weight: 500;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 2rem;
}
@media (min-width: 640px) {
    .action-buttons {
        flex-direction: row;
    }
}
.button {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1rem;
    font-weight: 500;
    border-radius: 0.5rem;
    transition: all 0.2s ease-in-out;
    border: none;
    cursor: pointer;
}
.button svg {
    margin-right: 0.5rem;
}
.button-primary {
    background-color: var(--blue-600);
    color: var(--white);
}
.button-primary:hover {
    background-color: var(--blue-700);
}
.button-secondary {
    background-color: var(--slate-100);
    color: var(--slate-700);
}
.button-secondary:hover {
    background-color: var(--slate-200);
}


/* --- DISCLAIMER --- */
.disclaimer {
    margin-top: 3rem;
    max-width: 56rem;
    margin-left: auto;
    margin-right: auto;
    background-color: var(--amber-50);
    border: 1px solid var(--amber-200);
    border-radius: 0.5rem;
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}
.disclaimer-icon {
    flex-shrink: 0;
    color: var(--amber-500);
}
.disclaimer-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--amber-900);
    margin: 0;
}
.disclaimer-text {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--amber-900);
}

/* --- PRINT STYLES --- */
@media print {
    body {
      -webkit-print-color-adjust: exact;
      print-color-adjust: exact;
    }
    .no-print {
      display: none !important;
    }
    .print-container {
      box-shadow: none !important;
      border: none !important;
      position: static !important;
    }
    .calculator-grid {
        display: block;
    }
}