/* BMI Calculator Specific Styles */

/* Calculator Section */
.calculator-section {
    background-color: var(--color-gray-50);
    padding: var(--space-12) 0;
}

.calculator-wrapper {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.calculator-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    padding: var(--space-6);
    text-align: center;
}

.calculator__title {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
    color: var(--color-white);
}

.calculator__description {
    font-size: var(--text-base);
    opacity: 0.9;
    margin: 0;
    line-height: 1.5;
}

/* BMI Calculator Form */
.bmi-calculator {
    padding: var(--space-8);
}

.form-section {
    margin-bottom: var(--space-10);
}

.form-section__title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-3);
    border-bottom: 2px solid var(--color-accent);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.form-section__title::before {
    content: '';
    width: 4px;
    height: 24px;
    background-color: var(--color-accent);
    border-radius: var(--radius-full);
}

/* Form Grid */
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.form-grid--compact {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-4);
}

/* Form Groups */
.form-group {
    position: relative;
    display: flex;
    flex-direction: column;
}

.form-group--units {
    margin-bottom: var(--space-8);
}

.form-label {
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input,
.form-select {
    padding: var(--space-4);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    transition: all var(--transition-fast);
    background-color: var(--color-white);
    width: 100%;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(21, 128, 61, 0.1);
}

.form-input:invalid {
    border-color: var(--color-error);
}

.form-unit {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    font-weight: 500;
    color: var(--color-gray-500);
    font-size: var(--text-sm);
    pointer-events: none;
    margin-top: 1.5rem;
}

/* Unit Selectors */
.input-with-units {
    display: flex;
    align-items: stretch;
    gap: var(--space-2);
}

.input-with-units .form-input {
    flex: 1;
}

.unit-selector {
    display: flex;
    background-color: var(--color-gray-100);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.unit-selector input[type="radio"] {
    display: none;
}

.unit-option {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    background-color: transparent;
    color: var(--color-gray-600);
    border: none;
    min-width: 50px;
    text-align: center;
}

.unit-selector input[type="radio"]:checked + .unit-option {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* Height Input Group */
.height-input-group {
    position: relative;
}

.height-option {
    display: none;
}

.height-option.active {
    display: block;
}

.height-option--imperial .imperial-height {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.form-input--small {
    flex: 1;
    max-width: 80px;
}

.form-separator {
    color: var(--color-gray-500);
    font-weight: 500;
}

.height-toggle {
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    display: flex;
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.height-toggle-btn {
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
    border: none;
    min-width: 35px;
}

.height-toggle-btn.active {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* Advanced Toggle */
.advanced-toggle {
    margin: var(--space-6) 0;
    text-align: center;
}

.advanced-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background-color: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.advanced-toggle-btn:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.advanced-toggle-icon {
    transition: transform var(--transition-fast);
}

.advanced-toggle-btn.active .advanced-toggle-icon {
    transform: rotate(180deg);
}

.advanced-section {
    border-top: 2px solid var(--color-gray-200);
    padding-top: var(--space-6);
    margin-top: var(--space-6);
}

/* Checkbox Grid */
.form-group--checkboxes {
    margin-top: var(--space-2);
}

.checkbox-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: var(--color-gray-50);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.checkbox-item:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-primary);
}

.checkbox-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.checkbox-item input[type="checkbox"]:checked + .checkbox-label {
    color: var(--color-primary);
    font-weight: 600;
}

.checkbox-label {
    font-weight: 500;
    color: var(--color-gray-700);
    cursor: pointer;
    margin: 0;
}

/* Calculator Submit Button */
.calculator__submit {
    width: 100%;
    margin-top: var(--space-8);
    padding: var(--space-5) var(--space-8);
    font-size: var(--text-lg);
    font-weight: 600;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border: none;
    color: var(--color-white);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.calculator__submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.calculator__submit:active {
    transform: translateY(0);
}

.calculator__submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Loading State */
.calculator__submit.loading {
    color: transparent;
}

.calculator__submit.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid var(--color-white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Results Section */
.calculator-results {
    margin-top: var(--space-6);
    padding: var(--space-6);
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.results-header {
    text-align: center;
    margin-bottom: var(--space-6);
}

.results__title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin: 0;
}

.results-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

/* Result Cards */
.result-card {
    background-color: var(--color-white);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.result-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.result-card__header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.result-card__icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    flex-shrink: 0;
}

.result-card__title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-gray-700);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-card__value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-2);
    line-height: 1.2;
}

.result-card__category {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.result-card__category--underweight {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--color-info);
}

.result-card__category--normal {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.result-card__category--overweight {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

.result-card__category--obese {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.result-card__description {
    color: var(--color-gray-600);
    margin: 0;
    line-height: 1.6;
}

/* Recommendations Section */
.recommendations-card {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    color: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    margin-top: var(--space-6);
}

.recommendations-card__title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-6);
    color: var(--color-white);
    text-align: center;
}

.recommendations-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.recommendations-list li {
    position: relative;
    padding-left: var(--space-8);
    margin-bottom: var(--space-4);
    line-height: 1.6;
}

.recommendations-list li::before {
    content: '💡';
    position: absolute;
    left: 0;
    font-size: var(--text-lg);
}

.recommendations-list li:last-child {
    margin-bottom: 0;
}

/* Health Risk Indicators */
.risk-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.risk-indicator--low {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.risk-indicator--moderate {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

.risk-indicator--high {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.risk-indicator__icon {
    width: 16px;
    height: 16px;
}

/* Progress Bars */
.progress-bar {
    background-color: var(--color-gray-200);
    border-radius: var(--radius-full);
    height: 8px;
    overflow: hidden;
    margin: var(--space-3) 0;
}

.progress-bar__fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* Error Messages */
.form-error {
    color: var(--color-error);
    font-size: var(--text-sm);
    margin-top: var(--space-2);
    display: none;
}

.form-group.error .form-input,
.form-group.error .form-select {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-group.error .form-error {
    display: block;
}

/* Success Messages */
.form-success {
    color: var(--color-success);
    font-size: var(--text-sm);
    margin-top: var(--space-2);
    display: none;
}

.form-group.success .form-input,
.form-group.success .form-select {
    border-color: var(--color-success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-group.success .form-success {
    display: block;
}

/* Content Section */
.content-section {
    background-color: var(--color-white);
    padding: var(--space-16) 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    max-width: 1200px;
    margin: 0 auto;
}

.content-card {
    background-color: var(--color-gray-50);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-200);
}

.content-card__title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.content-card__text {
    color: var(--color-gray-700);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.content-card__list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.content-card__list li {
    position: relative;
    padding-left: var(--space-6);
    margin-bottom: var(--space-3);
    color: var(--color-gray-700);
    line-height: 1.5;
}

.content-card__list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

/* Responsive Design */
@media (min-width: 640px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .results-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .content-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .results-content {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .content-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .calculator-wrapper {
        max-width: 800px;
    }
    
    .results-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

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

.slide-up {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Print Styles */
@media print {
    .calculator-results {
        box-shadow: none;
        border: 2px solid #000;
    }
    
    .result-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .recommendations-card {
        background: #f5f5f5 !important;
        color: #000 !important;
        border: 1px solid #000;
    }
}