:root {
            --amarelo: #FFC107;
            --branco: #FFFFFF;
            --preto: #000000;
        }
        
        body {
            background-color: #f8f9fa;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.6) 100%), url('https://images.unsplash.com/photo-1601597111158-2fceff292cdc?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1470&q=80') no-repeat center center;
            background-size: cover;
        }
        
        .login-container {
            width: 100%;
            max-width: 450px;
            margin: 0 auto;
            background-color: var(--branco);
            border-radius: 10px;
            box-shadow: 0 5px 25px rgba(0, 0, 0, 0.2);
            overflow: hidden;
        }
        
        .login-header {
            background-color: var(--preto);
            color: var(--branco);
            padding: 25px;
            text-align: center;
            position: relative;
        }
        
        .login-header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background-color: var(--amarelo);
        }
        
        .logo {
            font-size: 2rem;
            font-weight: bold;
            color: var(--amarelo);
            margin-bottom: 10px;
        }
        
        .login-body {
            padding: 30px;
        }
        
        .form-control:focus {
            border-color: var(--amarelo);
            box-shadow: 0 0 0 0.25rem rgba(255, 193, 7, 0.25);
        }
        
        .btn-login {
            background-color: var(--amarelo);
            color: var(--preto);
            border: none;
            padding: 12px;
            font-weight: 600;
            width: 100%;
            transition: all 0.3s;
        }
        
        .btn-login:hover {
            background-color: #e0a800;
            color: var(--preto);
            transform: translateY(-2px);
        }
        
        .forgot-password {
            color: var(--preto);
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .forgot-password:hover {
            color: var(--amarelo);
            text-decoration: underline;
        }
        
        .input-group-text {
            background-color: var(--preto);
            color: var(--branco);
            border: none;
        }
        
        .divider {
            display: flex;
            align-items: center;
            text-align: center;
            margin: 20px 0;
            color: #6c757d;
        }
        
        .divider::before, .divider::after {
            content: "";
            flex: 1;
            border-bottom: 1px solid #dee2e6;
        }
        
        .divider::before {
            margin-right: 10px;
        }
        
        .divider::after {
            margin-left: 10px;
        }
        
        .alert-danger {
            border-left: 4px solid #dc3545;
        }
        
        .footer {
            text-align: center;
            margin-top: 20px;
            color: #6c757d;
            font-size: 0.9rem;
        }