:root {
    --cplp-radius: 14px;
    --cplp-shadow: 0 10px 30px rgba(2, 6, 23, 0.08);
    --cplp-primary: #0b5ed7;
    --cplp-primary-dark: #0a58ca;
    --cplp-gray-light: #f6f7fb;
    --cplp-success: #198754;
    --cplp-danger: #dc3545;
    --cplp-warning: #ffc107;
}

/* Estructura general */
html, body {
    height: 100%;
    margin: 0;
}

body {
    background: var(--cplp-gray-light);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1 0 auto;
}

.container {
    max-width: 1200px;
}

/* Navbar */
.navbar {
    box-shadow: 0 10px 25px rgba(2, 6, 23, 0.10);
}

.navbar-brand img {
    transition: transform 0.2s;
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

/* Cards */
.card {
    border: 1px solid rgba(148, 163, 184, 0.35);
    border-radius: var(--cplp-radius);
    box-shadow: var(--cplp-shadow);
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 15px 35px rgba(2, 6, 23, 0.12);
}

.card-header {
    border-top-left-radius: var(--cplp-radius) !important;
    border-top-right-radius: var(--cplp-radius) !important;
    font-weight: 650;
    letter-spacing: 0.3px;
    background: linear-gradient(135deg, var(--cplp-primary), #2563eb);
    color: white;
    border-bottom: none;
    padding: 1rem 1.25rem;
}

/* Formularios */
.form-control, .form-select {
    border-radius: 12px;
    padding: 0.62rem 0.9rem;
    border-color: rgba(148, 163, 184, 0.55);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus, .form-select:focus {
    border-color: rgba(37, 99, 235, 0.55);
    box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.15);
}

/* ========================================
   VALIDACIÓN EN TIEMPO REAL
   ======================================== */

/* Campos válidos */
.form-control.is-valid, 
.form-select.is-valid {
    border-color: var(--cplp-success);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
    padding-right: calc(1.5em + 0.75rem);
}

/* Campos inválidos */
.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--cplp-danger);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
    padding-right: calc(1.5em + 0.75rem);
}

/* Mensajes de error */
.invalid-feedback {
    display: none;
    color: var(--cplp-danger);
    font-size: 0.875em;
    margin-top: 0.25rem;
}

.form-control.is-invalid ~ .invalid-feedback,
.form-select.is-invalid ~ .invalid-feedback {
    display: block;
}

/* Mensajes de éxito */
.valid-feedback {
    display: none;
    color: var(--cplp-success);
    font-size: 0.875em;
    margin-top: 0.25rem;
}

.form-control.is-valid ~ .valid-feedback,
.form-select.is-valid ~ .valid-feedback {
    display: block;
}

/* Indicador visual de campo obligatorio en labels */
label .text-danger {
    font-size: 1.2em;
    margin-left: 2px;
}

/* Botones */
.btn {
    border-radius: 12px;
    font-weight: 600;
    padding: 0.6rem 1.2rem;
    transition: all 0.2s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--cplp-primary), #2563eb);
    border: none;
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--cplp-primary-dark), #1d4ed8);
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(13, 110, 253, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, #198754, #157347);
    border: none;
}

.btn-warning {
    background: linear-gradient(135deg, #ffc107, #ffca2c);
    border: none;
    color: #000;
}

.btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

/* Hero section */
.hero {
    background: linear-gradient(90deg, #0b5ed7, #2563eb);
    color: #fff;
    border-radius: 18px;
    padding: 1.5rem;
    box-shadow: var(--cplp-shadow);
    border: 1px solid rgba(255, 255, 255, 0.18);
    margin-bottom: 2rem;
}

/* Footer */
.footer-cplp {
    width: 100%;
    background: linear-gradient(to right, #2c2c2c, #3a3a3a, #2c2c2c);
    color: #ffffff;
    text-align: center;
    flex-shrink: 0;
    margin-top: 2rem;
}

.footer-cplp p {
    opacity: 0.9;
    font-size: 0.95rem;
}

/* Wizard */
.wizard-actions {
    display: flex;
    gap: 10px;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-top: 14px;
}

.wizard-actions .right {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-left: auto;
}

.wizard-counter {
    font-weight: 700;
    color: #0f172a;
    background: #ffffff;
    border: 1px solid rgba(148, 163, 184, 0.45);
    padding: 8px 16px;
    border-radius: 999px;
    display: inline-block;
    font-size: 0.9rem;
}

/* Alertas personalizadas */
.alert {
    border-radius: 12px;
    border: none;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

/* Utilidades */
.text-white-50 {
    color: rgba(255, 255, 255, 0.7) !important;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .hero {
        padding: 1rem;
    }
    
    .card-header {
        padding: 0.75rem 1rem;
    }
    
    .wizard-actions .right {
        width: 100%;
    }
    
    .wizard-actions .btn {
        width: 100%;
    }
}

/* Animaciones */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.is-invalid {
    animation: shake 0.5s ease-in-out;
}