:root {
            --primary-color: #056451;
            --secondary-color: #18a88c;
            --dark-color: #2c3e50;
            --light-color: #f8f9fa;
            --success-color: #51cf66;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            height: 100vh;
            display: flex;
            align-items: center;
        }
        
        .login-container {
            max-width: 420px;
            width: 100%;
            margin: 0 auto;
            animation: fadeIn 0.8s ease-in-out;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .login-card {
            border: none;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            background: white;
        }
        
        .card-header {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 2rem;
            text-align: center;
            border-bottom: none;
        }
        
        .card-header h3 {
            font-weight: 700;
            margin: 0;
            font-size: 1.8rem;
        }
        
        .card-header p {
            opacity: 0.9;
            margin-bottom: 0;
            font-size: 0.9rem;
        }
        
        .card-body {
            padding: 2rem;
        }
        
        .form-control {
            height: 50px;
            border-radius: 8px;
            border: 1px solid #e0e0e0;
            padding-left: 45px;
        }
        
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(255, 107, 107, 0.25);
        }
        
        .input-icon {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--dark-color);
            z-index: 5;
        }
        
        .input-wrapper {
            position: relative;
        }
        
        .btn-login {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border: none;
            height: 50px;
            border-radius: 8px;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            font-size: 0.9rem;
            transition: all 0.3s;
        }
        
        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(255, 107, 107, 0.3);
        }
        
        .forgot-password {
            color: var(--dark-color);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.3s;
        }
        
        .forgot-password:hover {
            color: var(--primary-color);
        }
        
        .alert {
            border-radius: 8px;
        }
        
        .logo {
            width: 80px;
            height: 80px;
            background: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: -60px auto 20px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .logo i {
            font-size: 2.5rem;
            color: var(--primary-color);
        }
        
        .footer-text {
            text-align: center;
            margin-top: 1.5rem;
            color: #6c757d;
            font-size: 0.8rem;
        }