/**
 * Estilos para la Calculadora de Requerimiento Calórico
 * Diseño responsive basado en NutriPlen
 */

/* Variables CSS */
:root {
    --rc-primary-color: #2c3e50;
    --rc-secondary-color: #8bc34a;
    --rc-accent-color: #3498db;
    --rc-success-color: #27ae60;
    --rc-warning-color: #f39c12;
    --rc-error-color: #e74c3c;
    --rc-light-bg: #f8f9fa;
    --rc-white: #ffffff;
    --rc-gray-100: #f8f9fa;
    --rc-gray-200: #e9ecef;
    --rc-gray-300: #dee2e6;
    --rc-gray-400: #ced4da;
    --rc-gray-500: #adb5bd;
    --rc-gray-600: #6c757d;
    --rc-gray-700: #495057;
    --rc-gray-800: #343a40;
    --rc-gray-900: #212529;
    --rc-border-radius: 12px;
    --rc-box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --rc-transition: all 0.3s ease;
}

/* Reset y base */
.rc-calculadora-container * {
    box-sizing: border-box;
}

/* Contenedor principal */
.rc-calculadora-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--rc-light-bg) 0%, var(--rc-white) 100%);
    border-radius: var(--rc-border-radius);
    box-shadow: var(--rc-box-shadow);
    position: relative;
    overflow: hidden;
}

.rc-calculadora-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--rc-primary-color), var(--rc-secondary-color), var(--rc-accent-color));
}

/* Header */
.rc-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--rc-gray-200);
}

.rc-titulo {
    color: var(--rc-primary-color);
    font-size: 2.2rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    line-height: 1.2;
}

.rc-subtitulo {
    color: var(--rc-gray-600);
    font-size: 1.1rem;
    margin: 0;
    font-weight: 400;
}

/* Formulario */
.rc-form {
    margin-bottom: 2rem;
}

.rc-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

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

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

.rc-label {
    display: flex;
    align-items: center;
    font-weight: 600;
    color: var(--rc-gray-700);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.rc-icon {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    opacity: 0.7;
}

/* Iconos usando Unicode */
.rc-icon-age::before { content: '🎂'; }
.rc-icon-weight::before { content: '⚖️'; }
.rc-icon-height::before { content: '📏'; }
.rc-icon-gender::before { content: '👤'; }
.rc-icon-activity::before { content: '🏃'; }
.rc-icon-calculate::before { content: '🧮'; }
.rc-icon-reset::before { content: '🔄'; }

/* Inputs */
.rc-input,
.rc-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--rc-gray-300);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--rc-transition);
    background-color: var(--rc-white);
}

.rc-input:focus,
.rc-select:focus {
    outline: none;
    border-color: var(--rc-accent-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

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

/* Radio buttons */
.rc-radio-group {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.rc-radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: 500;
    color: var(--rc-gray-700);
}

.rc-radio {
    display: none;
}

.rc-radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--rc-gray-400);
    border-radius: 50%;
    margin-right: 0.5rem;
    position: relative;
    transition: var(--rc-transition);
}

.rc-radio:checked + .rc-radio-custom {
    border-color: var(--rc-accent-color);
    background-color: var(--rc-accent-color);
}

.rc-radio:checked + .rc-radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background-color: var(--rc-white);
    border-radius: 50%;
}

/* Botones */
.rc-form-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.rc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--rc-transition);
    text-decoration: none;
    min-width: 160px;
}

.rc-btn-primary {
    background: linear-gradient(135deg, var(--rc-accent-color), var(--rc-primary-color));
    color: var(--rc-white);
}

.rc-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(52, 152, 219, 0.3);
}

.rc-btn-secondary {
    background-color: var(--rc-gray-200);
    color: var(--rc-gray-700);
}

.rc-btn-secondary:hover {
    background-color: var(--rc-gray-300);
}

.rc-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Loading */
.rc-loading {
    text-align: center;
    padding: 2rem;
    color: var(--rc-gray-600);
}

.rc-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--rc-gray-300);
    border-top: 4px solid var(--rc-accent-color);
    border-radius: 50%;
    animation: rc-spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Errores */
.rc-errores {
    background-color: #ffeaea;
    border: 1px solid var(--rc-error-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    color: var(--rc-error-color);
}

.rc-errores ul {
    margin: 0;
    padding-left: 1.5rem;
}

/* Resultados */
.rc-resultados {
    background: linear-gradient(135deg, var(--rc-white), var(--rc-gray-100));
    border-radius: var(--rc-border-radius);
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: var(--rc-box-shadow);
}

.rc-resultado-item {
    background-color: var(--rc-white);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--rc-secondary-color);
}

.rc-resultado-item.rc-geb {
    border-left-color: var(--rc-accent-color);
}

.rc-resultado-header {
    margin-bottom: 1rem;
}

.rc-resultado-titulo {
    color: var(--rc-primary-color);
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
}

.rc-resultado-descripcion {
    color: var(--rc-gray-600);
    margin: 0;
    font-size: 0.95rem;
}

.rc-resultado-valor {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.rc-valor {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--rc-primary-color);
}

.rc-unidad {
    font-size: 1.1rem;
    color: var(--rc-gray-600);
    font-weight: 500;
}

/* Detalles */
.rc-resultado-detalles {
    background-color: var(--rc-gray-100);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.rc-resultado-detalles h4 {
    color: var(--rc-primary-color);
    margin: 0 0 1rem 0;
    font-size: 1.1rem;
}

.rc-detalles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
}

.rc-detalle {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--rc-gray-300);
}

.rc-detalle-label {
    font-weight: 600;
    color: var(--rc-gray-700);
}

.rc-detalle-valor {
    color: var(--rc-primary-color);
    font-weight: 500;
}

/* Disclaimer */
.rc-disclaimer {
    background-color: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: 8px;
    padding: 1rem;
    color: #856404;
    font-size: 0.9rem;
}

.rc-disclaimer p {
    margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .rc-calculadora-container {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .rc-titulo {
        font-size: 1.8rem;
    }
    
    .rc-form-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .rc-form-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .rc-btn {
        min-width: auto;
    }
    
    .rc-radio-group {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .rc-detalles-grid {
        grid-template-columns: 1fr;
    }
    
    .rc-valor {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .rc-calculadora-container {
        padding: 1rem;
        margin: 0.5rem;
    }
    
    .rc-titulo {
        font-size: 1.5rem;
    }
    
    .rc-subtitulo {
        font-size: 1rem;
    }
    
    .rc-resultado-item {
        padding: 1rem;
    }
    
    .rc-valor {
        font-size: 1.8rem;
    }
}

/* Animaciones */
.rc-resultado-item {
    animation: rc-fadeInUp 0.6s ease-out;
}

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

/* Estados de hover mejorados */
.rc-input:hover,
.rc-select:hover {
    border-color: var(--rc-gray-400);
}

.rc-radio-label:hover .rc-radio-custom {
    border-color: var(--rc-accent-color);
}

/* Accesibilidad */
.rc-btn:focus,
.rc-input:focus,
.rc-select:focus {
    outline: 2px solid var(--rc-accent-color);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}