:root{--color-bg: #f4f6f8;--color-surface: #ffffff;--color-border: #d7dde3;--color-text: #1f2937;--color-muted: #6b7280;--color-primary: #0d6efd;--color-primary-dark: #0b5ed7;--color-danger: #dc3545;--color-danger-dark: #bb2d3b;--radius: 10px;color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--color-bg);color:var(--color-text)}.app{max-width:900px;margin:0 auto;padding:16px 16px 48px}.app__header{display:flex;align-items:center;gap:14px;padding:8px 0 20px}.app__logo{height:40px;width:auto;flex-shrink:0}.app__header h1{margin:0 0 4px;font-size:1.5rem}.app__subtitle{margin:0;color:var(--color-muted);font-size:.9rem}.app__footer{margin-top:28px;padding-top:16px;border-top:1px solid var(--color-border);text-align:center;color:var(--color-muted);font-size:.8rem}.app__footer p{margin:0 0 4px}.app__footer a{color:var(--color-muted)}.app__footer a:hover{color:var(--color-primary)}.app__main{display:flex;flex-direction:column;gap:20px}.app__form{display:flex;flex-direction:column;gap:16px}.section{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:16px}.section__title{margin:0 0 14px;font-size:1.05rem;letter-spacing:.02em;color:var(--color-primary-dark)}.section__grid{display:grid;grid-template-columns:1fr;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field__label{font-size:.85rem;font-weight:600;color:var(--color-muted)}.field__control{width:100%;padding:9px 10px;border:1px solid var(--color-border);border-radius:8px;font-size:.95rem;font-family:inherit;background:var(--color-surface);color:var(--color-text)}.field__control:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #0d6efd26}textarea.field__control{resize:vertical}.btn-group{display:flex;flex-wrap:wrap;gap:8px}.btn-toggle{padding:9px 14px;min-height:40px;border:1px solid var(--color-border);border-radius:8px;background:#fff;color:var(--color-text);font-size:.9rem;font-weight:600;cursor:pointer;transition:background-color .15s ease,border-color .15s ease,color .15s ease}.btn-toggle--active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.quick-fill{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:6px}.btn-chip{padding:9px 16px;min-height:40px;border:1px solid var(--color-border);border-radius:999px;background:#f3f5f7;color:var(--color-muted);font-size:.85rem;font-weight:600;cursor:pointer}.btn-chip:hover{background:#e9ecef;color:var(--color-text)}.input-with-button{display:flex;gap:8px}.input-with-button .field__control{flex:1}.btn-inline{padding:0 12px;border:1px solid var(--color-primary);border-radius:8px;background:#fff;color:var(--color-primary);font-size:.85rem;font-weight:600;cursor:pointer;white-space:nowrap}.btn-inline:hover{background:var(--color-primary);color:#fff}.field__suggestion{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--color-muted)}.actions{display:flex;gap:12px;flex-wrap:wrap;position:sticky;bottom:0;padding:10px 0;background:linear-gradient(to top,var(--color-bg) 70%,transparent)}.btn{flex:1 1 auto;min-width:140px;padding:12px 16px;border:none;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;transition:background-color .15s ease}.btn--primary{background:var(--color-primary);color:#fff}.btn--primary:hover{background:var(--color-primary-dark)}.btn--secondary{background:#fff;color:var(--color-primary);border:1px solid var(--color-primary)}.btn--secondary:hover{background:var(--color-primary);color:#fff}.btn--danger{background:#fff;color:var(--color-danger);border:1px solid var(--color-danger)}.btn--danger:hover{background:var(--color-danger-dark);color:#fff}.preview{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:16px}.preview__title{margin:0 0 12px;font-size:1.05rem;color:var(--color-primary-dark)}.preview__text{margin:0;padding:12px;background:#f8f9fa;border:1px solid var(--color-border);border-radius:8px;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:.85rem;line-height:1.5;white-space:pre-wrap;word-break:break-word}@media (min-width: 640px){.app{padding:32px 24px 56px}.section__grid{grid-template-columns:1fr 1fr}.field--full{grid-column:1 / -1}.actions{justify-content:flex-start}.btn{flex:0 0 auto}}.history__status{color:var(--color-muted)}.history__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.history__item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:4px 16px}.history__item--highlight{border-color:var(--color-primary);box-shadow:0 0 0 3px #0d6efd26}.history__item summary{cursor:pointer;padding:12px 0;display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;list-style:none}.history__item summary::-webkit-details-marker{display:none}.history__task{font-weight:700}.history__meta{color:var(--color-muted);font-size:.85rem}.history__details{margin:0 0 12px;display:grid;grid-template-columns:max-content 1fr;gap:4px 12px;font-size:.85rem}.history__details dt{color:var(--color-muted);font-weight:600}.history__details dd{margin:0;word-break:break-word}