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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .login-container {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            padding: 40px;
            width: 100%;
            max-width: 400px;
            text-align: center;
        }

        .logo {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            border-radius: 50%;
            overflow: hidden;
        }

        .logo img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        h2 {
            color: #333;
            margin-bottom: 30px;
            font-size: 28px;
            font-weight: 600;
        }

        .form-group {
            margin-bottom: 20px;
            text-align: left;
        }

        .form-group label {
            display: block;
            margin-bottom: 5px;
            color: #555;
            font-weight: 500;
        }

        .form-group input {
            width: 100%;
            padding: 15px;
            border: 2px solid #e1e5e9;
            border-radius: 10px;
            font-size: 16px;
            transition: border-color 0.3s, box-shadow 0.3s;
            background: #f8f9fa;
        }

        .form-group input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
            background: white;
        }

        .remember-me {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
            text-align: left;
        }

        .remember-me input[type="checkbox"] {
            margin-right: 10px;
            transform: scale(1.2);
        }

        .remember-me label {
            color: #555;
            cursor: pointer;
        }

        .btn-signin {
            width: 100%;
            padding: 15px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            margin-top: 10px;
        }

        .btn-signin:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
        }

        .btn-signin:disabled {
            background: #ccc;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        .links {
            margin-top: 20px;
        }

        .links a {
            color: #667eea;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }

        .links a:hover {
            color: #764ba2;
        }

        .alert {
            padding: 12px;
            margin-bottom: 20px;
            border-radius: 8px;
            font-weight: 500;
        }

        .alert-danger {
            background-color: #f8d7da;
            border: 1px solid #f5c6cb;
            color: #721c24;
        }

        .recaptcha-container {
            margin: 20px 0;
            display: flex;
            justify-content: center;
        }

        @media (max-width: 480px) {
            .login-container {
                padding: 30px 20px;
            }
        }