:root{--bg:#f6f7f9;--card:#fff;--ink:#1d2330;--muted:#6b7280;--line:#e3e6eb;--accent:#0f766e;--danger:#b42318;--ok:#e7f6ec;--errbg:#fdecea}
@media (prefers-color-scheme:dark){:root{--bg:#111418;--card:#1a1f26;--ink:#e6e9ee;--muted:#9aa3af;--line:#2a313a;--accent:#2dd4bf;--danger:#f97066;--ok:#12301f;--errbg:#3a1714}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
nav{display:flex;flex-wrap:wrap;gap:.25rem 1rem;align-items:center;padding:.75rem 1rem;background:var(--card);border-bottom:1px solid var(--line)}
nav a{color:var(--ink);text-decoration:none}nav a:hover{color:var(--accent)}
main{max-width:900px;margin:0 auto;padding:1rem}
h1{margin:.5rem 0 .25rem}h2{margin:0 0 .75rem;font-size:1.15rem}h3{margin:1.25rem 0 .25rem;font-size:1rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1rem;margin:1rem 0}
.narrow{max-width:360px;margin:4rem auto}
.muted{color:var(--muted)}.err{color:var(--danger)}
.flash{padding:.6rem .8rem;border-radius:8px}.flash.ok{background:var(--ok)}.flash.err{background:var(--errbg)}
label{display:block;margin:.25rem 0;font-size:.92rem}
input,select,textarea{width:100%;font:inherit;padding:.5rem;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink)}
input[type=checkbox]{width:auto}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:.5rem 1rem;align-items:end}.grid .wide{grid-column:1/-1}
button,.button{display:inline-block;font:inherit;padding:.5rem .9rem;border:0;border-radius:8px;background:var(--accent);color:#fff;cursor:pointer;text-decoration:none}
button[disabled]{opacity:.5;cursor:not-allowed}button.secondary{background:var(--line);color:var(--ink)}
button.danger{background:var(--danger)}button.small,.small{padding:.25rem .6rem;font-size:.85rem}
button.link{background:none;color:var(--muted);padding:0}
form.inline{display:inline}.actions{display:flex;flex-wrap:wrap;gap:.5rem}
.checks{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.25rem}
.tag{display:inline-block;font-size:.75rem;padding:0 .45rem;border-radius:999px;background:var(--line);color:var(--ink);margin-left:.25rem}
table{width:100%;border-collapse:collapse;margin:.5rem 0}td,th{text-align:left;padding:.4rem;border-bottom:1px solid var(--line);vertical-align:top}
.row{padding:.5rem 0;border-bottom:1px solid var(--line)}.list{padding-left:1.1rem}
pre{white-space:pre-wrap;font:inherit;margin:.25rem 0}.nowrap{white-space:nowrap}
code{word-break:break-all}.qr{display:block;max-width:320px;width:100%;background:#fff;padding:8px;border-radius:8px}
details>summary{cursor:pointer}
fieldset{border:1px solid var(--line);border-radius:8px;padding:.5rem .75rem}legend{font-size:.92rem;padding:0 .25rem}
.bubble{background:#d9fdd3;color:#111b21;border-radius:8px;padding:.5rem .7rem;margin:.35rem 0;white-space:pre-wrap;overflow-wrap:anywhere;max-width:560px;box-shadow:0 1px .5px rgba(0,0,0,.13)}
.bubble:empty::before{content:'(empty)';color:#667781}
.preview-label{font-size:.8rem;color:var(--muted);margin-top:.4rem}
@media (prefers-color-scheme:dark){.bubble{background:#005c4b;color:#e9edef}}