body {
        background-image: url('../includes/fondo.png');
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
        background-repeat: no-repeat;
        height: 100vh;
        display: flex;
        justify-content: center;
        align-items: center;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        margin: 0;
        padding: 0;
    }
    
    .login-container {
        width: 100%;
        max-width: 400px;
        margin: 20px;
    }
    
    .login-card {
        background: rgba(255, 255, 255, 0.95);
        border-radius: 15px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        border: none;
        overflow: hidden;
        backdrop-filter: blur(5px);
    }
    
    .card-header {
        background: #5C2A2B;
        color: white;
        text-align: center;
        padding: 30px 20px;
        border-bottom: none;
    }
    
    .company-logo {
        font-size: 2.5rem;
        margin-bottom: 10px;
    }
    
    .welcome-title {
        font-size: 1.8rem;
        font-weight: 700;
        margin: 0;
        letter-spacing: 0.5px;
    }
    
    .system-name {
        font-size: 1.1rem;
        opacity: 0.9;
        margin-top: 5px;
        font-weight: 300;
    }
    
    .card-body {
        padding: 30px;
    }
    
    .form-label {
        font-weight: 600;
        color: #333;
        margin-bottom: 8px;
        font-size: 0.9rem;
    }
    
    .input-group {
        margin-bottom: 20px;
    }
    
    .input-group-text {
        background: #f8f9fa;
        border: 1px solid #ced4da;
        border-right: none;
        color: #5C2A2B;
    }
    
    .form-control {
        border: 1px solid #ced4da;
        border-left: none;
        border-radius: 0 8px 8px 0;
        padding: 12px 15px;
        font-size: 0.95rem;
    }
    
    .form-control:focus {
        border-color: #5C2A2B;
        box-shadow: 0 0 0 0.2rem rgba(92, 42, 43, 0.25);
    }
    
    .btn-login {
        background: #5C2A2B;
        border: none;
        border-radius: 8px;
        padding: 12px;
        font-weight: 600;
        font-size: 1rem;
        color: white;
        width: 100%;
        margin-top: 10px;
        transition: background-color 0.2s;
    }
    
    .btn-login:hover {
        background: #4A2122;
    }
    
    .security-notice {
        text-align: center;
        margin-top: 20px;
        padding: 15px;
        background: #f8f9fa;
        border-radius: 8px;
        border-left: 4px solid #5C2A2B;
    }
    
    .security-notice i {
        color: #5C2A2B;
        margin-right: 8px;
    }
    
    .support-info {
        text-align: center;
        margin-top: 15px;
        font-size: 0.85rem;
        color: #6c757d;
    }