body {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    min-height: 100vh;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.vh-100 {
    background: transparent;
}

/* ==================== CARD PRINCIPAL ==================== */
.card {
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.4);
    border: none !important;
    overflow: hidden;
    animation: slideUp 0.6s ease-out;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== IMAGEN LATERAL CON OVERLAY CLARO ==================== */
.col-md-6.col-lg-5.d-none.d-md-block {
    position: relative;
    overflow: hidden;
    background: #1e3a8a;
}

/* Imagen base - MÁS CLARA */
.bg-login {
    border-radius: 1rem 0 0 1rem;
    object-fit: cover;
    height: 100%;
    width: 100%;
    display: block;
    filter: brightness(1.1) saturate(1.1) contrast(1.05);
}

/* Overlay uniforme AZUL CLARO para ver la imagen */
.col-md-6.col-lg-5.d-none.d-md-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(30, 58, 138, 0.50);
    /* ⬅️ Reducido a 50% de opacidad */
    z-index: 1;
    border-radius: 1rem 0 0 1rem;
}

/* Patrón de puntos decorativo muy sutil */
.col-md-6.col-lg-5.d-none.d-md-block::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 26px 26px;
    z-index: 2;
    border-radius: 1rem 0 0 1rem;
}

/* ==================== FORMULARIO ==================== */
.card-body {
    background: #ffffff;
    border-radius: 0 1rem 1rem 0;
    position: relative;
}

/* ==================== TÍTULOS ==================== */
.h2.fw-bold {
    color: #1e3a8a;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.fw-normal.mb-3.pb-3 {
    color: #64748b !important;
    font-weight: 500 !important;
    font-size: 1rem;
}

/* ==================== INPUTS ==================== */
.form-outline {
    position: relative;
}

.form-control {
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    padding: 14px 18px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: #f8fafc;
}

.form-control:focus {
    border-color: #2563eb;
    background-color: #ffffff;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
    outline: none;
}

.form-control:hover:not(:focus) {
    border-color: #cbd5e1;
}

.form-control.is-invalid {
    border-color: #ef4444;
    background-color: #fef2f2;
}

/* ==================== LABELS ==================== */
.form-label {
    color: #334155;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
}

/* ==================== BOTÓN PRINCIPAL ==================== */
.btn-primary {
    background: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
    border: none;
    border-radius: 10px;
    padding: 14px 28px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.5);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.6);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 15px rgba(37, 99, 235, 0.5);
}

.btn-primary:disabled {
    background: linear-gradient(135deg, #94a3b8 0%, #cbd5e1 100%);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ==================== SPINNER DEL BOTÓN ==================== */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* ==================== ENLACE ==================== */
.small.text-muted {
    color: #64748b !important;
    transition: all 0.3s ease;
    text-decoration: none;
    font-weight: 500;
}

.small.text-muted:hover {
    color: #2563eb !important;
    text-decoration: underline;
}

/* ==================== ALERTAS ==================== */
.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.05));
    border: none;
    border-left: 4px solid #ef4444;
    border-radius: 10px;
    color: #991b1b;
    padding: 12px 16px;
}

.alert-danger ul {
    margin-bottom: 0;
    padding-left: 20px;
}

/* ==================== VALIDACIÓN ==================== */
.invalid-feedback {
    color: #ef4444;
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: 6px;
    display: block;
}

/* ==================== SEPARADOR ==================== */
hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, #e2e8f0, transparent);
    margin: 1.5rem 0;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .card {
        margin: 15px;
        border-radius: 1rem !important;
    }

    .card-body {
        border-radius: 1rem;
        padding: 2rem 1.5rem !important;
    }

    .h2.fw-bold {
        font-size: 1.5rem;
    }

    .fw-normal.mb-3.pb-3 {
        font-size: 0.95rem;
    }

    .btn-primary {
        font-size: 1rem;
        padding: 12px 24px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 20px 10px;
    }

    .h2.fw-bold {
        font-size: 1.3rem;
    }
}

/* ==================== ANIMACIONES ==================== */
.form-control,
.btn-primary,
.form-label {
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== SWEETALERT2 ==================== */
.swal2-popup {
    border-radius: 15px;
    font-family: inherit;
}

.swal2-title {
    color: #1e293b;
    font-weight: 600;
}

.swal2-confirm {
    background: linear-gradient(135deg, #1e40af 0%, #2563eb 100%) !important;
    border-radius: 8px;
    padding: 10px 24px;
    font-weight: 600;
}

.swal2-confirm:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%) !important;
}

/* ==================== ACCESIBILIDAD ==================== */
.form-control:focus,
.btn-primary:focus {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}