:root {
    /* Colores base del tema claro */
    --primary-color: #2c3e50;
    --primary-dark: #2980b9;
    --secondary-color: #3498db;
    --success-color: #2ecc71;
    --error-color: #e74c3c;
    --warning-color: #f1c40f;
    --info-color: #3498db;

    /* Colores de fondo y texto */
    --background-color: #ffffff;
    --background-body: #f8fafc;
    --text-color: #2a3f56;
    --text-muted: #64748b;
    
    /* Colores de elementos estructurales */
    --sidebar-width: 250px;
    --header-height: 64px;
    --sidebar-bg: #ffffff;
    --header-bg: #ffffff;
    
    /* Colores de bordes y sombras */
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    
    /* Colores de elementos de interfaz */
    --card-bg: #ffffff;
    --hover-bg: #f8fafc;
    --input-bg: #ffffff;
    --input-bg-disabled: #f8fafc;
    --border-input: #e2e8f0;
    --input-text: #1a1a1a;
    --input-border: #ced4da;
    --text-nav-item: #618095;
    --nav-item: #f8fafc;
    --nav-item-active: #f8fafc;
    --nav-item-active-before: #3498db;
    --icons: #64748b;
    --icons-background-hover: #f8fafc;
    --h1-title: #3498db;
    --button-main: #3498db;

    /* Estado y badges */
    --status-active-bg: #dcfce7;
    --status-active-text: #166534;
    --status-inactive-bg: #fee2e2;
    --status-inactive-text: #991b1b;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Bordes */
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-sm: 0.25rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

#img-logo {
    height: auto;
    width: 70px;
}

.login-container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: #666;
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.1);
}

/* Estilos para campos con error */
.form-group input.error {
    border-color: var(--error-color);
    background-color: #fff5f5;
}

.form-group input.error:focus {
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.1);
}

.btn-login {
    width: 100%;
    padding: 0.8rem;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-login:hover:not(:disabled) {
    background-color: #2980b9;
    transform: translateY(-1px);
}

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Estilo para el spinner de carga */
.fa-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Estilos para el contenedor de contraseña */
.password-container {
    position: relative;
    width: 100%;
}

.password-container input {
    padding-right: 2.5rem;
}

.toggle-password {
    position: absolute;
    right: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #666;
    transition: color 0.3s ease;
}

.toggle-password:hover {
    color: var(--secondary-color);
}

/* Eliminar spinners en navegadores basados en WebKit */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Eliminar spinners en Firefox */
input[type="number"] {
    -moz-appearance: textfield;
}

/* Enlaces adicionales */
.additional-links {
    margin-top: 1rem;
    text-align: center;
}

.additional-links a {
    color: var(--secondary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.additional-links a:hover {
    color: #2980b9;
}

/* Mensaje de error personalizado */
.error-message {
    background-color: #fee2e2;
    color: #991b1b;
    padding: 0.75rem 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.error-message i {
    font-size: 1.1rem;
}

/* Responsive */
@media (max-width: 480px) {
    .login-container {
        margin: 1rem;
        padding: 1.5rem;
    }

    .login-header h1 {
        font-size: 1.5rem;
    }
}