* { box-sizing: border-box; font-family: sans-serif; }
        body { margin: 0; padding: 0; background: #f4f7f9; }

        /* --- 로그인 화면 스타일 --- */
        .error-msg { 
            color: #ff4d4d; font-size: 14px; font-weight: bold; 
            margin-bottom: 10px; min-height: 20px; text-align: left;
            visibility: hidden; 
        }

        #login-layer {
            display: flex; flex-direction: column;
            justify-content: center; align-items: center; 
            padding: 20px; 
            margin-top: 15vh; /* 화면 중앙쯤 오도록 위쪽 여백만 살짝 줌 */
        }
        .login-box { width: 100%; max-width: 400px; }
        .login-box h1 { text-align: center; color: #333; margin-bottom: 30px; }
        
        .login-box input {
            width: 100%; height: 60px; margin-bottom: 15px; padding: 0 15px;
            font-size: 18px; border: 1px solid #ddd; border-radius: 12px; outline: none;
        }
        .login-box button {
            width: 100%; height: 60px; background: #007bff; color: white;
            font-size: 20px; font-weight: bold; border: none; border-radius: 12px; cursor: pointer;
        }

        /* --- 상단 바 --- */
        .user-info-bar { 
            display: flex; justify-content: space-between; align-items: center; 
            background: #fff; padding: 15px; border-bottom: 1px solid #eee; 
        }
        .top-btn-group {
            display: flex; gap: 8px;
        }
        .menu-btn-top {
            padding: 8px 15px; background: #e9ecef; color: #000; 
            border: 1px solid #ccc; border-radius: 5px; font-weight: bold; cursor: pointer;
        }
        .logout-btn { 
            padding: 8px 15px; background: transparent; color: #ff4d4d; 
            border: 1px solid #ff4d4d; border-radius: 5px; font-weight: bold; cursor: pointer;
        }

        /* --- 메뉴 그리드 --- */
        .menu-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            padding: 15px;
        }
        .menu-grid button {
            background-color: #fff;
            border: 1px solid #ddd;
            border-radius: 8px;
            height: 90px;
            padding: 10px;
            font-size: 15px;
            font-weight: bold;
            color: #333;
            cursor: pointer;
            line-height: 1.5;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        /* --- 테이블 및 데이터 조회 영역 --- */
        .table-container { margin-top: 15px; background: #fff; padding: 4px; border-radius: 8px; border: 1px solid #eee; overflow-x: auto; }
        table { width: 100%; border-collapse: collapse; text-align: center; font-size: 11px; white-space: nowrap; }
        th { background-color: #f8f9fa; padding: 6px 2px; border-bottom: 2px solid #ddd; letter-spacing: -0.5px; }
        td { padding: 8px 2px; border-bottom: 1px solid #eee; letter-spacing: -0.5px; }
        tr:hover { background-color: #f1f1f1; }

        #dashboard-table { width: 100%; border-collapse: collapse; font-size: 11px; border: 1px solid #ddd; }
        #dashboard-table th, #dashboard-table td { border: 1px solid #eee; padding: 8px 4px; }
        #dashboard-table td:not(:first-child) { text-align: right; padding-right: 8px; font-size: 13px; /* 숫자 데이터 열: 1px 증가 */}
        #dashboard-table td:first-child { text-align: left; padding-left: 8px; }

        /* --- 푸터 --- */
        .footer {
            text-align: center; padding: 20px; font-size: 12px; color: #999;
        }

        th, #dashboard-table th {
            font-size: 11px !important;       /* 폰트 크기 13px 고정 */
            font-weight: bold !important;   /* 쓸데없는 볼드체 제거 */
            color: #333 !important;           /* 글자색 통일 */
            text-align: center !important;    /* 무조건 가운데 정렬 */
            vertical-align: middle !important;
            padding: 12px 5px !important;
            border-bottom: 1px solid #dee2e6 !important;
        }