/* Modern, blue, clean style for Youtrack Issues app */
        body {
            font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
            background: #f4f8fb;
            color: #222;
            margin: 0;
            padding: 0;
        }

        header, .header {
            background: linear-gradient(90deg, #1976d2 60%, #2196f3 100%);
            color: #fff;
            padding: 2rem 1rem 1.2rem 1rem;
            text-align: center;
            box-shadow: 0 2px 8px rgba(25, 118, 210, 0.08);
            letter-spacing: 1px;
        }

        main, .container {
            max-width: 1200px;
            margin: 2rem auto;
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 2px 16px rgba(33, 150, 243, 0.08);
            padding: 2rem 1.5rem;
        }

        h1, h2, h3 {
            color: #1976d2;
            margin-top: 0;
        }

        button, .btn {
            background: #1976d2;
            color: #fff;
            border: none;
            border-radius: 6px;
            padding: 0.7em 1.5em;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, box-shadow 0.2s;
            box-shadow: 0 1px 4px rgba(25, 118, 210, 0.08);
            margin: 5px;
        }
        button:hover, .btn:hover {
            background: #1565c0;
        }

        button:disabled {
            background: #ccc;
            cursor: not-allowed;
        }

        input, select, textarea {
            border: 1px solid #b3c6e0;
            border-radius: 5px;
            padding: 0.6em 1em;
            font-size: 1rem;
            margin-bottom: 1em;
            width: 300px;
            box-sizing: border-box;
            background: #f7fbff;
            transition: border 0.2s;
        }
        input:focus, select:focus, textarea:focus {
            border-color: #1976d2;
            outline: none;
        }

        .controls {
            margin-bottom: 2rem;
        }

        .controls label {
            font-weight: 600;
            color: #1976d2;
            margin-right: 10px;
        }

        #issuesTable {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            background: #f7fbff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 1px 6px rgba(33, 150, 243, 0.06);
        }
        #issuesTable th, #issuesTable td {
            padding: 0.9em 1em;
            text-align: left;
            border: 1px solid #e3f0fb;
        }
        #issuesTable th {
            background: #e3f0fb;
            color: #1976d2;
            font-weight: 600;
            border-bottom: 2px solid #b3c6e0;
        }
        #issuesTable tr:nth-child(even) {
            background: #f0f6fc;
        }
        #issuesTable tr:hover {
            background: #e3f0fb;
        }

        .status {
            font-weight: bold;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.85em;
        }

        .loading {
            text-align: center;
            padding: 20px;
            color: #666;
        }

        .error {
            color: #d32f2f;
            background: #ffebee;
            border: 1px solid #ffcdd2;
            border-radius: 4px;
            padding: 10px;
            margin: 10px 0;
        }

        .success {
            color: #388e3c;
            background: #e8f5e8;
            border: 1px solid #c8e6c9;
            border-radius: 4px;
            padding: 10px;
            margin: 10px 0;
        }

        @media (max-width: 600px) {
            main, .container {
                padding: 1rem 0.5rem;
            }
            #issuesTable th, #issuesTable td {
                padding: 0.6em 0.5em;
            }
        }