/* Estilos para el sistema de autenticación */
:root {
    --primary: #2c3e50;
    --primary-hover: #1a252f;
    --danger: #e74a3b;
    --success: #1cc88a;
    --warning: #f6c23e;
    --dark: #5a5c69;
    --light: #f8f9fc;
    --gray: #858796;
}

/* Estilos generales */
body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    height: 100vh;
    display: flex;
    align-items: center;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--dark);
}

/* Contenedor principal */
.login-container {
    max-width: 400px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem;
}

/* Logo y título */
.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo i {
    font-size: 4rem;
    background: linear-gradient(135deg, #58636e 0%, #324c63 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.login-title {
    font-family: 'Raleway', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-align: center;
    letter-spacing: 1px;
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    font-family: 'Raleway', sans-serif;
    text-align: center;
    color: var(--gray);
    margin-bottom: 2rem;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
}

/* Tarjeta de login */
.login-card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
}

.login-card:hover {
    box-shadow: 0 0.5rem 2rem 0 rgba(58, 59, 69, 0.15);
}

/* Encabezado de la tarjeta */
.card-header {
    background-color: var(--light);
    border-bottom: 1px solid #e3e6f0;
    padding: 1.5rem 2rem;
    text-align: center;
    font-weight: 600;
    color: var(--primary);
    font-size: 1.25rem;
}

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

/* Formulario */
.form-floating {
    margin-bottom: 1.25rem;
}

.form-control {
    height: calc(3.5rem + 2px);
    padding: 1rem 0.75rem;
    font-size: 1rem;
    border: 1px solid #d1d3e2;
    border-radius: 0.35rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: #2c3e50;
    box-shadow: 0 0 0 0.25rem rgba(44, 62, 80, 0.25);
}

.form-floating>label {
    padding: 1rem 0.75rem;
    color: #6e707e;
}

/* Botones */
.btn {
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 0.35rem;
    transition: all 0.2s;
}

.btn-primary {
    background: linear-gradient(135deg, #58636e 0%, #324c63 100%);
    border: none;
    color: white;
}

.btn-primary:hover, .btn-primary:focus {
    background: linear-gradient(135deg, #324c63 0%, #1a252f 100%);
    border: none;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: none;
}

/* Alertas */
.alert {
    border: none;
    border-radius: 0.35rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.alert-danger {
    background-color: rgba(231, 74, 59, 0.1);
    color: var(--danger);
    border-left: 4px solid var(--danger);
}

/* Pie de página */
.footer {
    text-align: center;
    margin-top: 2rem;
    color: var(--gray);
    font-size: 0.875rem;
}

/* Efectos de carga */
.spinner-border {
    width: 1.25rem;
    height: 1.25rem;
    border-width: 0.2em;
}

/* Responsive */
@media (max-width: 576px) {
    .login-container {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .login-title {
        font-size: 1.5rem;
    }
    
    .login-subtitle {
        font-size: 1rem;
    }
}

/* Animaciones */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-container {
    animation: fadeIn 0.5s ease-out;
}

/* Estilos para el input group (mostrar/ocultar contraseña) */
.input-group-text {
    background-color: transparent;
    border-left: none;
    cursor: pointer;
    color: var(--gray);
    transition: color 0.2s;
}

.input-group-text:hover {
    color: #2c3e50;
}

.input-group .form-control:not(:first-child) {
    border-top-right-radius: 0.35rem !important;
    border-bottom-right-radius: 0.35rem !important;
    border-right: 1px solid #d1d3e2;
}

/* Estilos para el checkbox "Recordarme" */
.form-check-input:checked {
    background-color: #2c3e50;
    border-color: #2c3e50;
}

.form-check-label {
    color: var(--gray);
    user-select: none;
}

/* Enlaces */
a {
    color: #2c3e50;
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #1a252f;
    text-decoration: underline;
}

/* Texto pequeño */
.small {
    font-size: 0.875rem;
}

/* Utilidades */
.text-center {
    text-align: center;
}

.mt-3 {
    margin-top: 1rem;
}

.mb-0 {
    margin-bottom: 0;
}