/* Variables del Sistema de Diseño (Aesthetics Premium) */
:root {
    --senda-primary: hsl(210, 80%, 45%);
    --senda-primary-hover: hsl(210, 80%, 40%);
    --senda-secondary: hsl(160, 60%, 43%);
    --senda-secondary-hover: hsl(160, 60%, 38%);
    --senda-bg: hsl(210, 20%, 98%);
    --senda-card-bg: hsl(0, 0%, 100%);
    --senda-text: hsl(210, 30%, 15%);
    --senda-text-light: hsl(210, 15%, 45%);
    --senda-border: hsl(210, 15%, 88%);
    --senda-border-focus: hsl(210, 80%, 60%);
    --senda-error: hsl(0, 75%, 50%);
    --senda-success: hsl(140, 65%, 45%);
    --senda-warning: hsl(35, 90%, 55%);
    --senda-card-header-bg: hsl(210, 20%, 96%);
    
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.03);
    --shadow-md: 0 8px 16px rgba(0,0,0,0.05);
    --shadow-lg: 0 16px 32px rgba(0,0,0,0.08);
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

/* Contenedor Principal */
.senda-inscripcion-wrapper {
    max-width: 850px;
    margin: 40px auto;
    padding: 0 20px;
    color: var(--senda-text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
}

/* Cabecera del Formulario */
.senda-form-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 30px;
    background: linear-gradient(135deg, hsl(210, 80%, 45%) 0%, hsl(190, 80%, 40%) 100%);
    border-radius: var(--radius-lg);
    color: #fff;
    box-shadow: var(--shadow-lg);
}

.senda-form-header h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0 0 10px 0;
    letter-spacing: -0.5px;
    color: #fff !important;
}

.senda-form-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin: 0 0 20px 0;
}

.senda-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
}

/* Indicador de Pasos (Steps Progress Bar) */
.senda-steps-indicator {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 40px;
    padding: 0 10px;
}

.step-indicator-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 2;
    flex: 1;
    position: relative;
    transition: var(--transition-smooth);
}

.step-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--senda-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    color: var(--senda-text-light);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.step-label {
    margin-top: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--senda-text-light);
    transition: var(--transition-smooth);
    text-align: center;
}

.step-indicator-line {
    flex-grow: 1;
    height: 2px;
    background: var(--senda-border);
    margin: 0 -20px;
    margin-bottom: 25px;
    z-index: 1;
}

/* Estados de la barra de progreso */
.step-indicator-item.active .step-circle {
    border-color: var(--senda-primary);
    background: var(--senda-primary);
    color: #fff;
    box-shadow: 0 0 0 4px rgba(43, 108, 176, 0.2);
}

.step-indicator-item.active .step-label {
    color: var(--senda-primary);
    font-weight: 700;
}

.step-indicator-item.completed .step-circle {
    border-color: var(--senda-success);
    background: var(--senda-success);
    color: #fff;
}

.step-indicator-item.completed .step-label {
    color: var(--senda-success);
}

/* Secciones y Tarjetas */
.senda-section {
    border: 1px solid var(--senda-border);
    border-radius: var(--radius-lg);
    padding: 30px;
    margin-bottom: 25px;
    background: var(--senda-card-bg);
    position: relative;
}

.card-shadow {
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

.card-shadow:hover {
    box-shadow: var(--shadow-lg);
}

.senda-section legend {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--senda-primary);
    padding: 0 15px;
    float: none;
    width: auto;
    margin-bottom: 0;
    border-bottom: none;
}

/* Títulos de Sección */
.senda-section-title {
    margin: 30px 0 20px 0;
}

.senda-section-title h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0 0 5px 0;
    color: var(--senda-text);
}

.senda-section-title p {
    color: var(--senda-text-light);
    margin: 0;
    font-size: 0.95rem;
}

/* Cuadrículas e Inputs */
.senda-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.senda-grid-weeks {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 10px;
}

.senda-form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.senda-form-group label {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: var(--senda-text);
}

.senda-form-group label small {
    color: var(--senda-text-light);
    font-weight: 400;
}

.senda-form-group input[type="text"],
.senda-form-group input[type="email"],
.senda-form-group input[type="tel"],
.senda-form-group input[type="number"],
.senda-form-group select,
.senda-form-group textarea {
    padding: 12px 16px;
    border: 1.5px solid var(--senda-border);
    border-radius: var(--radius-md);
    background-color: var(--senda-card-bg);
    color: var(--senda-text);
    font-size: 0.95rem;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.senda-form-group input:focus,
.senda-form-group select:focus,
.senda-form-group textarea:focus {
    border-color: var(--senda-border-focus);
    box-shadow: 0 0 0 4px rgba(66, 153, 225, 0.15);
    outline: none;
}

/* Tarjeta del Menor */
.senda-menor-card {
    border: 1.5px solid var(--senda-border);
    border-radius: var(--radius-lg);
    background: var(--senda-card-bg);
    margin-bottom: 25px;
    overflow: hidden;
}

.sendor-card-header {
    background: var(--senda-card-header-bg);
    padding: 15px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--senda-border);
}

.sendor-card-header h4 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--senda-primary);
}

.senda-menor-card > .senda-grid-2,
.senda-menor-card > .senda-form-group {
    padding: 25px 25px 0 25px;
}

.senda-menor-card > .senda-form-group:last-of-type {
    padding-bottom: 25px;
}

/* Caja de Opciones dentro de Tarjeta Menor */
.senda-options-box {
    background: hsl(210, 40%, 97%);
    padding: 20px 25px;
    border-top: 1px dashed var(--senda-border);
}

.senda-options-box h5 {
    margin: 0 0 15px 0;
    font-size: 1rem;
    font-weight: 700;
    color: var(--senda-text);
}

/* Checklist de Periodos y Addons */
.senda-periodos-checklist, .senda-addons-checklist {
    background: #fff;
    border: 1.5px solid var(--senda-border);
    border-radius: var(--radius-md);
    padding: 15px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    box-shadow: var(--shadow-sm);
}

.senda-chk-label, .senda-addons-checklist label {
    display: flex;
    align-items: center;
    font-weight: 500 !important;
    font-size: 0.95rem;
    cursor: pointer;
    margin: 0;
    padding: 4px 0;
}

.senda-chk-label input[type="checkbox"], .senda-addons-checklist input[type="checkbox"] {
    margin-right: 12px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.senda-weeks-detail {
    padding: 8px 0 12px 30px;
    border-left: 2px solid var(--senda-border);
    margin: 5px 0 10px 10px;
}

.senda-weeks-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--senda-text-light);
}

.senda-weeks-checklist-box {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    background: hsl(210, 20%, 97%);
    padding: 10px;
    border-radius: var(--radius-sm);
}

.senda-weeks-checklist-box label {
    display: flex;
    align-items: center;
    font-size: 0.85rem;
    font-weight: 500 !important;
    cursor: pointer;
    margin: 0;
}

.senda-weeks-checklist-box input[type="checkbox"] {
    margin-right: 6px;
    width: 15px;
    height: 15px;
    cursor: pointer;
}

/* Botones de Acción */
.senda-btn-remove {
    background: rgba(229, 62, 62, 0.1);
    color: #e53e3e;
    border: none;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.senda-btn-remove:hover {
    background: #e53e3e;
    color: #fff;
}

.senda-btn-secondary {
    background: #fff;
    color: var(--senda-primary);
    border: 2px solid var(--senda-primary);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.senda-btn-secondary:hover {
    background: var(--senda-primary);
    color: #fff;
    transform: translateY(-1px);
}

.senda-actions-center {
    display: flex;
    justify-content: center;
    margin: 20px 0 35px 0;
}

/* Navegación de Pasos (Footer de paso) */
.senda-step-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
    border-top: 1px solid var(--senda-border);
    padding-top: 25px;
}

.senda-btn-text {
    background: transparent;
    color: var(--senda-text-light);
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-fast);
    padding: 10px 15px;
}

.senda-btn-text:hover {
    color: var(--senda-primary);
}

/* Tarjeta del Contrato (Paso 3) */
.senda-contract-box {
    border: 2px solid hsl(210, 20%, 30%);
    border-radius: var(--radius-lg);
    background: #fff;
    overflow: hidden;
    margin-bottom: 30px;
}

.contract-header {
    background: hsl(210, 20%, 25%);
    color: #fff;
    padding: 20px;
    text-align: center;
}

.contract-header h4 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: #fff !important;
}

.contract-header span {
    font-size: 0.9rem;
    opacity: 0.8;
}

.contract-body {
    padding: 30px;
    font-size: 0.95rem;
}

.contract-divider {
    height: 1px;
    background: var(--senda-border);
    margin: 20px 0;
    border: none;
}

.contract-kid-card {
    background: hsl(210, 30%, 98%);
    border: 1px dashed var(--senda-border);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 15px;
}

.contract-kid-card h5 {
    margin: 0 0 10px 0;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--senda-primary);
}

.contract-kid-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contract-item-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid hsl(210, 15%, 93%);
}

.contract-item-row:last-child {
    border-bottom: none;
}

.contract-item-row span:last-child {
    font-weight: 700;
    color: var(--senda-text);
}

.contract-totals {
    background: hsl(210, 30%, 96%);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-top: 25px;
}

.contract-total-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 1rem;
}

.contract-total-row span:last-child {
    font-weight: 700;
}

.text-discount span {
    color: var(--senda-success) !important;
}

.total-highlight {
    font-size: 1.25rem;
    font-weight: 800;
    border-top: 1.5px solid var(--senda-border);
    padding-top: 12px;
    margin-top: 8px;
}

.total-highlight span:last-child {
    color: var(--senda-primary);
    font-size: 1.4rem;
}

/* Tarjetas de Descuento (Checkout) */
.senda-discounts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.senda-checkbox-card {
    display: flex;
    align-items: flex-start;
    padding: 20px;
    border: 1.5px solid var(--senda-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    background: var(--senda-bg);
    transition: var(--transition-fast);
}

.senda-checkbox-card:hover {
    border-color: var(--senda-border-focus);
}

.senda-checkbox-card input[type="checkbox"] {
    margin-top: 5px;
    margin-right: 15px;
    width: 18px;
    height: 18px;
}

.checkbox-content {
    display: flex;
    flex-direction: column;
}

.checkbox-content strong {
    font-size: 1rem;
    color: var(--senda-text);
}

.checkbox-content span {
    font-size: 0.85rem;
    color: var(--senda-text-light);
    margin-top: 2px;
}

/* Consentimiento */
.senda-consent-box {
    padding: 20px;
    background: hsl(35, 100%, 97%);
    border-left: 4px solid var(--senda-warning);
    border-radius: var(--radius-sm);
}

.senda-checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    font-size: 0.95rem;
}

.senda-checkbox-label input[type="checkbox"] {
    margin-top: 4px;
    margin-right: 12px;
    min-width: 18px;
    height: 18px;
}

/* Alertas de carga y error */
.senda-error-alert {
    background: hsl(0, 100%, 96%);
    border: 1px solid hsl(0, 100%, 90%);
    color: var(--senda-error);
    padding: 15px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 25px;
    font-weight: 500;
}

.senda-loading-alert {
    background: hsl(210, 100%, 96%);
    border: 1px solid hsl(210, 100%, 90%);
    color: var(--senda-primary);
    padding: 15px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 25px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Spinner animado */
.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(66, 153, 225, 0.2);
    border-radius: 50%;
    border-top-color: var(--senda-primary);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Footer de checkout */
.senda-checkout-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--senda-card-bg);
    border: 1px solid var(--senda-border);
    border-radius: var(--radius-lg);
    padding: 25px 35px;
    margin-top: 25px;
}

.senda-total-calc {
    display: flex;
    flex-direction: column;
}

.senda-total-calc span {
    font-size: 0.95rem;
    color: var(--senda-text-light);
}

.senda-total-calc strong {
    font-size: 2rem;
    font-weight: 800;
    color: var(--senda-primary);
    letter-spacing: -0.5px;
}

.senda-btn-primary {
    background: var(--senda-primary);
    color: #fff;
    border: none;
    padding: 16px 32px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: 0 4px 6px rgba(43, 108, 176, 0.2);
}

.senda-btn-primary:hover:not(:disabled) {
    background: var(--senda-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(43, 108, 176, 0.3);
}

.senda-btn-primary:disabled {
    background: hsl(210, 15%, 85%);
    color: hsl(210, 10%, 65%);
    cursor: not-allowed;
    box-shadow: none;
}

/* Responsividad */
@media (max-width: 768px) {
    .senda-grid-2, .senda-discounts-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .senda-steps-indicator {
        flex-direction: row;
        font-size: 0.8rem;
    }
    
    .step-indicator-line {
        margin: 0 -5px;
        margin-bottom: 25px;
    }

    .step-circle {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }

    .senda-checkout-footer {
        flex-direction: column;
        gap: 20px;
        text-align: center;
        padding: 20px;
    }
    
    .senda-btn-primary {
        width: 100%;
    }
    
    .senda-form-header h2 {
        font-size: 1.6rem;
    }
    
    .senda-section {
        padding: 20px;
    }
    
    .senda-menor-card > .senda-grid-2,
    .senda-menor-card > .senda-form-group {
        padding: 15px 15px 0 15px;
    }
    
    .senda-options-box {
        padding: 15px;
    }

    .contract-body {
        padding: 15px;
    }
}