:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}body{background:#1c242f;font-family:system-ui,sans-serif}.app-container{padding:16px;max-width:1100px;margin:0 auto}.card{border:1px solid #ddd;border-radius:12px;padding:12px;box-shadow:0 1px 3px #0000000f;background:#3a3a3a}.card-title{font-weight:700;margin-bottom:8px}.button-row{display:flex;gap:10px;flex-wrap:wrap}.mini-button{padding:6px 10px;font-size:12px;border-radius:8px;border:1px solid #d0d7de;background:#f6f8fa;color:#24292f;cursor:pointer;transition:all .2s}.mini-button:hover{background:#eaeef2}.confirm-button{background:#d1fae5;border:1px solid #86efac}.confirm-button:hover{background:#bbf7d0}.cancel-button{background:#fee2e2;border:1px solid #fca5a5}.cancel-button:hover{background:#fecaca}.timeline-container{max-height:360px;overflow:auto;border:1px solid #eee;border-radius:10px}.timeline-item{padding:10px;border-bottom:1px solid #f2f2f2}.timeline-row{display:flex;justify-content:space-between;gap:10px}.timeline-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.datetime-input{padding:6px 10px;border-radius:8px;border:1px solid #ccc;background:#fff;color:#222;font-size:14px}.datetime-input:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 2px #2563eb26}