/* ============================================
   LOGIN CSS - Facultad Nacional de Salud Pública
   Universidad de Antioquia
   Paleta institucional aplicada
   ============================================ */

/* Variables de color institucionales */
:root {
    /* Paleta principal */
    --fnsp-primary: #026937;
    --fnsp-primary-light: #35944b;
    --fnsp-primary-lighter: #43b649;
    --fnsp-primary-bright: #8dc63f;
    --fnsp-secondary: #3ebdac;
    --fnsp-secondary-dark: #069a7e;
    --fnsp-secondary-darker: #0e7774;
    
    /* Paleta complementaria */
    --fnsp-accent-purple: #70205b;
    --fnsp-accent-blue: #137598;
    --fnsp-accent-red: #ef434d;
    --fnsp-accent-orange: #f9a12c;
    --fnsp-accent-deep: #532D87;
    
    /* Neutrales */
    --fnsp-white: #ffffff;
    --fnsp-gray-light: #f8f9fa;
    --fnsp-gray: #6c757d;
    --fnsp-gray-dark: #343a40;
    --fnsp-black: #212529;
    
    /* Sombras */
    --fnsp-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --fnsp-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --fnsp-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --fnsp-shadow-xl: 0 20px 35px -8px rgba(0, 0, 0, 0.15);
}

/* ========== BASE ========== */
body {
    background-image: url(../images/Imagen2.jpg);
    background-position: center center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: cover;
    background-color: var(--fnsp-secondary-darker);
    font-size: 0.875rem;
    min-height: 100vh;
    position: relative;
}

/* Overlay para mejorar legibilidad sobre la imagen de fondo */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(2, 105, 55, 0.85) 0%, rgba(14, 119, 116, 0.85) 100%);
    z-index: 0;
}

/* Asegurar que el contenido esté sobre el overlay */
.container {
    position: relative;
    z-index: 1;
}

/* ========== LOGO ========== */
.logo-container {
    margin-bottom: 1.5rem;
}

.logo-img {
    max-height: 100px;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.02);
}

/* ========== TARJETA PRINCIPAL ========== */
.login-card {
    background: rgba(255, 255, 255, 0.98);
    border-radius: 20px;
    border: none;
    box-shadow: var(--fnsp-shadow-xl);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(0px);
}

.login-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 25px 40px -12px rgba(0, 0, 0, 0.2);
}

/* Encabezado de la tarjeta */
.card-header-custom {
    background: linear-gradient(135deg, var(--fnsp-primary) 0%, var(--fnsp-secondary-dark) 100%);
    padding: 1.5rem;
    text-align: center;
    border-bottom: none;
}

.card-header-custom h4 {
    color: white;
    margin: 0;
    font-weight: 600;
    letter-spacing: -0.3px;
}

.card-header-custom p {
    color: rgba(255, 255, 255, 0.85);
    margin: 0.5rem 0 0 0;
    font-size: 0.8rem;
}

/* Cuerpo de la tarjeta */
.card-body-custom {
    padding: 2rem;
}

/* ========== DESCRIPCIÓN INSTITUCIONAL ========== */
.institutional-description {
    background: linear-gradient(135deg, var(--fnsp-gray-light) 0%, #e9ecef 100%);
    padding: 1rem 1.25rem;
    border-radius: 16px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--fnsp-primary);
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--fnsp-gray-dark);
}

.institutional-description i {
    color: var(--fnsp-primary);
    margin-right: 0.5rem;
}

.institutional-description strong {
    color: var(--fnsp-primary);
}

/* ========== FORMULARIOS ========== */
.form-label {
    font-weight: 600;
    color: var(--fnsp-gray-dark);
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control, .form-select {
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    background-color: white;
}

.form-control:focus, .form-select:focus {
    border-color: var(--fnsp-primary);
    box-shadow: 0 0 0 0.2rem rgba(2, 105, 55, 0.15);
    outline: none;
}

.form-control.is-invalid:focus {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.15);
}

/* Contenedor de contraseña */
.password-wrapper {
    position: relative;
}

.password-wrapper .form-control {
    padding-right: 45px;
}

/* ========== BOTONES ========== */
.btn {
    border-radius: 12px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--fnsp-primary) 0%, var(--fnsp-primary-light) 100%);
    color: white;
}

.btn-primary:hover, .btn-primary:focus {
    background: linear-gradient(135deg, var(--fnsp-primary-light) 0%, var(--fnsp-primary) 100%);
    transform: translateY(-1px);
    box-shadow: var(--fnsp-shadow-md);
}

.btn-success {
    background: linear-gradient(135deg, var(--fnsp-primary-lighter) 0%, var(--fnsp-primary) 100%);
    color: white;
}

.btn-success:hover, .btn-success:focus {
    background: linear-gradient(135deg, var(--fnsp-primary) 0%, var(--fnsp-primary-lighter) 100%);
    transform: translateY(-1px);
    box-shadow: var(--fnsp-shadow-md);
}

.btn-outline-secondary {
    border: 2px solid #dee2e6;
    background: transparent;
    color: var(--fnsp-gray);
}

.btn-outline-secondary:hover {
    border-color: var(--fnsp-primary);
    background: var(--fnsp-primary);
    color: white;
    transform: translateY(-1px);
}

.btn-link {
    color: var(--fnsp-primary);
    text-decoration: none;
    font-weight: 500;
}

.btn-link:hover {
    color: var(--fnsp-primary-light);
    text-decoration: underline;
}

/* ========== ALERTAS ========== */
.alert {
    border-radius: 12px;
    border: none;
    padding: 1rem;
    font-size: 0.85rem;
}

.alert-danger {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    color: #991b1b;
    border-left: 4px solid var(--fnsp-accent-red);
}

.alert-secondary {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    color: var(--fnsp-primary);
    border-left: 4px solid var(--fnsp-primary);
    border-radius: 16px;
}

/* ========== INFO DE USUARIO ========== */
.user-info-card {
    background: linear-gradient(135deg, var(--fnsp-primary) 0%, var(--fnsp-primary-light) 100%);
    border-radius: 16px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    color: white;
}

.user-info-card strong {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

.user-info-card small {
    font-size: 0.75rem;
    opacity: 0.9;
}

/* ========== RADIO BUTTONS ========== */
.form-check-input:checked {
    background-color: var(--fnsp-primary);
    border-color: var(--fnsp-primary);
}

.form-check-input:focus {
    border-color: var(--fnsp-primary-light);
    box-shadow: 0 0 0 0.2rem rgba(2, 105, 55, 0.15);
}

/* ========== TOGGLE PASSWORD BUTTON ========== */
.toggle-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 12px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    color: var(--fnsp-gray);
    transition: color 0.2s ease;
    z-index: 10;
}

.toggle-button:hover {
    color: var(--fnsp-primary);
}

.eye-icon {
    width: 20px;
    height: 20px;
}

/* ========== SECCIÓN DE REGISTRO ========== */
.registration-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e9ecef;
}

.card-header {
    background: transparent;
    border-bottom: 2px solid var(--fnsp-primary-lighter);
    padding-bottom: 0.5rem;
}

.card-title i {
    margin-right: 0.5rem;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .card-body-custom {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
    }
    
    .logo-img {
        max-height: 70px;
    }
    
    .institutional-description {
        font-size: 0.75rem;
    }
}

@media (max-width: 576px) {
    .card-body-custom {
        padding: 1rem;
    }
    
    .form-control, .form-select {
        padding: 0.6rem 0.8rem;
    }
}

/* ========== ANIMACIONES ========== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-card {
    animation: fadeInUp 0.5s ease-out;
}

/* ========== UTILITARIOS ADICIONALES ========== */
.text-fnsp-primary {
    color: var(--fnsp-primary);
}

.bg-fnsp-primary-light {
    background-color: var(--fnsp-primary-light);
}

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

.rounded-4 {
    border-radius: 20px;
}