* {
            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 20px 40px rgba(0, 0, 0, 0.1);
            padding: 40px;
            width: 100%;
            max-width: 400px;
            position: relative;
            overflow: hidden;
        }

        .login-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #667eea, #764ba2);
        }

        .logo {
            text-align: center;
            margin-bottom: 30px;
        }

        .logo-icon {
            width: 60px;
            height: 60px;
            /* background: linear-gradient(135deg, #667eea, #764ba2);
            border-radius: 50%; */
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 15px;
            position: relative;
        }

        /* .logo-icon::after {
            content: '🔐';
            font-size: 28px;
            filter: grayscale(100%) brightness(0) invert(1);
        } */

        .logo h1 {
            color: #333;
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 5px;
        }

        .logo p {
            color: #666;
            font-size: 14px;
        }

        .form-group {
            margin-bottom: 25px;
            position: relative;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #333;
            font-weight: 500;
            font-size: 14px;
        }

        .form-group input {
            width: 100%;
            padding: 15px 20px;
            border: 2px solid #e1e5e9;
            border-radius: 10px;
            font-size: 16px;
            background: #f8f9fa;
            transition: all 0.3s ease;
            outline: none;
        }

        .form-group input:focus {
            border-color: #667eea;
            background: #fff;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .password-toggle {
            position: absolute;
            right: 15px;
            top: 67%;
            transform: translateY(-50%);
            cursor: pointer;
            color: #666;
            font-size: 18px;
            user-select: none;
        }

        .password-toggle:hover {
            color: #333;
        }

        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
        }

        .remember-me {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .remember-me input[type="checkbox"] {
            width: 18px;
            height: 18px;
            accent-color: #667eea;
        }

        .remember-me label {
            font-size: 14px;
            color: #666;
            cursor: pointer;
        }

        .forgot-password {
            color: #667eea;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .forgot-password:hover {
            color: #764ba2;
        }

        .login-btn {
            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: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .login-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
        }

        .login-btn:active {
            transform: translateY(0);
        }

        .login-btn.loading {
            pointer-events: none;
        }

        .login-btn .spinner {
            display: none;
            width: 20px;
            height: 20px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-top: 2px solid white;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin-right: 10px;
        }

        .login-btn.loading .spinner {
            display: inline-block;
        }

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

        .error-message {
            background: #ffe6e6;
            color: #d63384;
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            font-size: 14px;
            border-left: 4px solid #d63384;
            display: none;
        }

        .security-info {
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #e1e5e9;
        }

        .security-info p {
            color: #666;
            font-size: 12px;
            line-height: 1.5;
        }

        .security-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: #e8f5e8;
            color: #2d5a2d;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 500;
            margin-top: 8px;
        }

        @media (max-width: 480px) {
            .login-container {
                padding: 30px 25px;
                margin: 10px;
            }
            
            .logo h1 {
                font-size: 20px;
            }
        }

        /* 애니메이션 효과 */
        .login-container {
            animation: slideUp 0.6s ease-out;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .search-pwd-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1000;
            align-items: center;
            justify-content: center;
        }
        .search-pwd-content {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            text-align: center;
        }