:root{
  --bg:#f4f6fb; --surface:#ffffff; --surface2:#eef1f8; --border:#dce1ec;
  --text:#1c2333; --muted:#6b7484; --accent:#2f6fed; --accent2:#1c4fd0;
  --ok:#1f9d55; --warn:#c97a12; --danger:#d63b3b; --shadow:0 1px 3px rgba(20,30,60,.08);
}
@media (prefers-color-scheme:dark){
  :root{ --bg:#0f1420; --surface:#171d2b; --surface2:#1f2738; --border:#2a3346;
    --text:#e7ecf5; --muted:#94a0b5; --accent:#5b8dff; --accent2:#3f6fe0;
    --shadow:0 1px 3px rgba(0,0,0,.35); }
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.45}
h1{font-size:1.35rem;margin:0 0 2px}
h3{margin:0 0 10px}
.muted{color:var(--muted);font-size:.85rem;margin:2px 0}
.inline{display:inline}
a{color:var(--accent);text-decoration:none}

.top{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:5}
.brand{font-weight:700;font-size:1.05rem;display:flex;gap:8px;align-items:center}
.top-actions{display:flex;gap:8px;align-items:center}

.btn{background:var(--accent);color:#fff;border:none;padding:9px 15px;border-radius:9px;cursor:pointer;font-size:.9rem;font-weight:600;box-shadow:var(--shadow)}
.btn:hover{background:var(--accent2)}
.btn.ghost{background:var(--surface2);color:var(--text);border:1px solid var(--border);box-shadow:none}
.btn.small{padding:6px 11px;font-size:.82rem}
.btn.danger,.link.danger{color:var(--danger)}
.link{background:none;border:none;color:var(--muted);cursor:pointer;font-size:.82rem;padding:4px 6px}
.link:hover{color:var(--text)}

.tabs{display:flex;gap:6px;padding:10px 16px 0;overflow-x:auto;background:var(--surface);border-bottom:1px solid var(--border)}
.tab{white-space:nowrap;padding:9px 14px;border-radius:10px 10px 0 0;color:var(--muted);font-weight:600;font-size:.9rem;border:1px solid transparent;border-bottom:none}
.tab.active{background:var(--bg);color:var(--text);border-color:var(--border)}
.tab .count{font-size:.72rem;color:var(--muted);background:var(--surface2);padding:1px 7px;border-radius:20px;margin-left:6px}

.wrap{max-width:860px;margin:0 auto;padding:20px 16px 60px}
.phead{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:14px}
.empty{max-width:860px;margin:40px auto;text-align:center;color:var(--muted)}

.addbox{margin-bottom:16px}
.addbox>summary{list-style:none;display:inline-block}
.addbox>summary::-webkit-details-marker{display:none}
.taskform{display:flex;flex-direction:column;gap:8px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px;margin-top:10px;box-shadow:var(--shadow)}
.taskform .row{display:flex;gap:8px;flex-wrap:wrap}
.taskform .row.end{justify-content:flex-end}
input,textarea,select{font:inherit;color:var(--text);background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:9px 11px;outline:none}
input:focus,textarea:focus,select:focus{border-color:var(--accent)}
textarea{resize:vertical}

.tasks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.task{display:flex;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px 14px;box-shadow:var(--shadow)}
.task.st-done{opacity:.62}
.task.st-done .title{text-decoration:line-through}
.checkbox{background:none;border:none;font-size:1.4rem;cursor:pointer;color:var(--accent);line-height:1;padding:0}
.tbody{flex:1;min-width:0}
.tmain{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.ki{font-size:1rem}
.title{font-weight:600}
.notes{color:var(--muted);font-size:.86rem;margin:5px 0;white-space:pre-wrap}
.badge{font-size:.68rem;font-weight:700;padding:2px 8px;border-radius:20px;background:var(--surface2);color:var(--muted);text-transform:uppercase;letter-spacing:.02em}
.badge.status{background:var(--surface2)}
.st-todo .badge.status{color:var(--warn)}
.st-in_progress .badge.status{color:var(--accent)}
.st-done .badge.status{color:var(--ok)}
.pri-high{background:#fde8e8;color:#c0392b}
.pri-med{background:#fef3e2;color:#b9770e}
.pri-low{background:#e9f2fe;color:#2f6fed}
@media (prefers-color-scheme:dark){.pri-high{background:#3a2020;color:#ff9a9a}.pri-med{background:#3a3020;color:#ffcf8a}.pri-low{background:#1e2a44;color:#9ab8ff}}
.o-user{background:#e5edff;color:#2f4fd0}.o-claude{background:#efe6ff;color:#7a3fd0}
.o-codex{background:#e2f5ec;color:#1f8f5f}.o-deepseek{background:#e2f0fb;color:#1f6fb0}.o-kimi{background:#fdeaf3;color:#c03b7a}
@media (prefers-color-scheme:dark){.o-user{background:#22305c;color:#a9c0ff}.o-claude{background:#2e2350;color:#c9a9ff}.o-codex{background:#1e3a2c;color:#8fe0b5}.o-deepseek{background:#1e3145;color:#9fd0f5}.o-kimi{background:#3a2030;color:#f5a9cd}}

.tactions{display:flex;gap:6px;align-items:center;margin-top:8px;flex-wrap:wrap}
.tactions select{padding:5px 8px;font-size:.8rem}
.comments{margin-top:8px}
.comments summary{cursor:pointer;color:var(--muted);font-size:.82rem}
.comment{background:var(--surface2);border-radius:8px;padding:7px 10px;margin:6px 0;font-size:.88rem}
.cform{display:flex;gap:6px;margin-top:6px}
.cform input{flex:1}

.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh}
.login-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:32px 28px;width:min(340px,92vw);display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow);text-align:center}
.login-card .brand{justify-content:center;font-size:1.3rem}
.login-card input{text-align:center}
.alert{background:#fde8e8;color:#c0392b;border-radius:8px;padding:9px;font-size:.85rem}

dialog{border:1px solid var(--border);border-radius:14px;padding:0;background:var(--surface);color:var(--text);box-shadow:0 10px 40px rgba(0,0,0,.25);max-width:92vw}
dialog::backdrop{background:rgba(10,15,30,.5)}
dialog .taskform{margin:0;border:none;box-shadow:none;min-width:320px}
.bulkbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:10px;padding:8px 10px;background:var(--surface);border:1px solid var(--border);border-radius:10px}
.bulkbar .selall{display:flex;align-items:center;gap:6px;font-size:.82rem;color:var(--muted);cursor:pointer}
.tsel{align-self:flex-start;margin-top:3px;width:16px;height:16px;cursor:pointer;accent-color:var(--accent)}
@media(max-width:600px){.wrap{padding:14px 10px 50px}.phead{flex-direction:column}}