/* ============ design tokens ============ */
:root{
  color-scheme:light;
  --bg:#EFF2F7; --surface:#FFFFFF; --surface2:#F6F8FB;
  --ink:#0E1626; --ink2:#3D4C63; --muted:#5E6B80;
  --line:#DCE3EC; --line-soft:#E9EEF4;
  --accent:#2B5CE6; --accent-ink:#2450C7; --accent-soft:#EAF0FD; --accent-track:#D8E2F8;
  --btn-bg:#2450C7; --btn-text:#FFFFFF;
  --todo:#94A3B8; --todo-text:#475569; --todo-soft:#EEF2F6;
  --prog:#EA8C00; --prog-text:#8F5400; --prog-soft:#FBF1DE;
  --done:#1B7A57; --done-text:#14684A; --done-soft:#E2F4EC;
  --warn:#C05017; --warn-text:#6E3212; --warn-soft:#FBEFE6;
  --danger:#B3261E; --danger-text:#FFFFFF;
  --shadow:0 1px 2px rgba(14,22,38,.05), 0 10px 28px -16px rgba(14,22,38,.14);
  --shadow-lift:0 2px 4px rgba(14,22,38,.06), 0 14px 34px -14px rgba(14,22,38,.22);
  --display:"Space Grotesk","Helvetica Neue",Arial,sans-serif;
  --body:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SF Mono",Menlo,monospace;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#090D14; --surface:#121826; --surface2:#0D1320;
    --ink:#E9EEF7; --ink2:#B4C0D2; --muted:#8291A7;
    --line:#212B3D; --line-soft:#1A2434;
    --accent:#5D8AFF; --accent-ink:#8FADFF; --accent-soft:#17233E; --accent-track:#233457;
    --btn-bg:#5D8AFF; --btn-text:#0A1020;
    --todo:#8B99AC; --todo-text:#A9B5C6; --todo-soft:#1A2231;
    --prog:#E8930C; --prog-text:#F0B457; --prog-soft:#2A2010;
    --done:#2FA874; --done-text:#57CD9B; --done-soft:#0F2A1E;
    --warn:#E07B44; --warn-text:#E5B08C; --warn-soft:#2A1A10;
    --danger:#E5484D; --danger-text:#1A0708;
    --shadow:0 1px 2px rgba(0,0,0,.35), 0 12px 30px -18px rgba(0,0,0,.55);
    --shadow-lift:0 2px 6px rgba(0,0,0,.45), 0 16px 38px -16px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#090D14; --surface:#121826; --surface2:#0D1320;
  --ink:#E9EEF7; --ink2:#B4C0D2; --muted:#8291A7;
  --line:#212B3D; --line-soft:#1A2434;
  --accent:#5D8AFF; --accent-ink:#8FADFF; --accent-soft:#17233E; --accent-track:#233457;
  --btn-bg:#5D8AFF; --btn-text:#0A1020;
  --todo:#8B99AC; --todo-text:#A9B5C6; --todo-soft:#1A2231;
  --prog:#E8930C; --prog-text:#F0B457; --prog-soft:#2A2010;
  --done:#2FA874; --done-text:#57CD9B; --done-soft:#0F2A1E;
  --warn:#E07B44; --warn-text:#E5B08C; --warn-soft:#2A1A10;
  --danger:#E5484D; --danger-text:#1A0708;
  --shadow:0 1px 2px rgba(0,0,0,.35), 0 12px 30px -18px rgba(0,0,0,.55);
  --shadow-lift:0 2px 6px rgba(0,0,0,.45), 0 16px 38px -16px rgba(0,0,0,.6);
}

/* ============ base ============ */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%; scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--body); font-size:15px; line-height:1.5;
  padding:18px 20px 64px;
}
.wrap{max-width:1000px; margin:0 auto}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px; border-radius:4px}
::selection{background:var(--accent-soft)}

.skip{
  position:absolute; left:-9999px; top:0; z-index:100;
  background:var(--btn-bg); color:var(--btn-text); padding:10px 16px;
  border-radius:0 0 8px 0; font-family:var(--mono); font-size:12px; text-decoration:none;
}
.skip:focus-visible{left:0}

/* ============ page header ============ */
.top{display:flex; align-items:flex-start; justify-content:space-between; gap:14px; margin-bottom:14px}
.eyebrow{
  font-family:var(--mono); font-size:10.5px; font-weight:600; letter-spacing:.13em;
  text-transform:uppercase; color:var(--accent-ink); margin:0 0 4px;
}
h1{
  font-family:var(--display); font-weight:700; font-size:clamp(22px,3.6vw,29px);
  line-height:1.05; letter-spacing:-.02em; margin:0 0 3px;
}
.lede{margin:0; color:var(--muted); font-size:13px}
.theme-btn{
  flex:none; width:38px; height:38px; border-radius:9px; cursor:pointer;
  border:1px solid var(--line); background:var(--surface); color:var(--ink2);
  font-size:16px; line-height:1; display:grid; place-items:center;
  transition:border-color .15s, box-shadow .15s;
}
.theme-btn:hover{border-color:var(--accent); color:var(--accent-ink); box-shadow:var(--shadow)}

.back{
  display:inline-block; font-family:var(--mono); font-size:11.5px; font-weight:600;
  color:var(--muted); text-decoration:none; margin-bottom:10px;
}
.back:hover{color:var(--accent-ink); text-decoration:underline; text-underline-offset:3px}

/* ============ shared components ============ */
.bar-track{display:block; height:7px; border-radius:999px; background:var(--accent-track); overflow:hidden}
.bar-fill{display:block; height:100%; border-radius:inherit; background:var(--accent); transition:width .5s ease}

.chip-link{
  display:inline-flex; align-items:center; font-family:var(--mono); font-size:11.5px;
  letter-spacing:.02em; white-space:nowrap; text-decoration:none;
  padding:6px 11px; border:1px solid var(--line); border-radius:999px;
  background:var(--surface); color:var(--ink2);
  transition:border-color .15s, background .15s, color .15s;
}
.chip-link:hover{border-color:var(--accent); color:var(--accent-ink)}
.chip-link[aria-current="page"]{background:var(--ink); border-color:var(--ink); color:var(--bg)}
.chip-link .chip-n{opacity:.65; margin-left:4px}

.util-btn{
  font-family:var(--mono); font-size:11.5px; font-weight:500; color:var(--ink2);
  background:var(--surface); border:1px solid var(--line); border-radius:8px;
  padding:6px 11px; cursor:pointer; white-space:nowrap;
  transition:border-color .15s, color .15s;
}
.util-btn:hover{border-color:var(--accent); color:var(--accent-ink)}
.linkbtn{
  background:none; border:0; padding:6px 2px; cursor:pointer; white-space:nowrap;
  font-family:var(--mono); font-size:11.5px; color:var(--muted); text-decoration:underline;
  text-underline-offset:3px;
}
.linkbtn:hover{color:var(--danger)}
.btn{
  font-family:var(--mono); font-size:12px; font-weight:600; white-space:nowrap;
  padding:8px 14px; border-radius:8px; border:1px solid transparent; cursor:pointer;
  transition:transform .15s, box-shadow .15s;
}
.btn.ghost{background:var(--surface); border-color:var(--line); color:var(--ink2)}
.btn.ghost:hover{border-color:var(--accent); color:var(--accent-ink)}
.btn.danger{background:var(--danger); color:var(--danger-text)}
.btn.danger:hover{transform:translateY(-1px)}

/* ============ search box + dropdown ============ */
.search-box{position:relative; flex:1 1 220px; min-width:180px}
.search-box svg{position:absolute; left:10px; top:17px; translate:0 -50%; width:13px; height:13px; stroke:var(--muted); pointer-events:none}
.search-box input{
  width:100%; font-family:var(--mono); font-size:12px; color:var(--ink);
  padding:8px 10px 8px 30px; border:1px solid var(--line); border-radius:9px;
  background:var(--surface);
}
.search-box input::placeholder{color:var(--muted)}
.search-results{
  position:absolute; top:calc(100% + 4px); left:0; right:0; z-index:50;
  background:var(--surface); border:1px solid var(--line); border-radius:10px;
  box-shadow:var(--shadow-lift); overflow:hidden; max-height:320px; overflow-y:auto;
}
.search-results a{
  display:block; padding:8px 12px; text-decoration:none;
  border-top:1px solid var(--line-soft);
}
.search-results a:first-child{border-top:0}
.search-results a b{display:block; font-family:var(--display); font-size:13px; font-weight:500; color:var(--ink)}
.search-results a span{display:block; font-family:var(--mono); font-size:10.5px; color:var(--muted); margin-top:1px}
.search-results a:hover, .search-results a:focus-visible{background:var(--accent-soft); outline:none}
.sr-none{margin:0; padding:10px 12px; font-family:var(--mono); font-size:11.5px; color:var(--muted); font-style:italic}

/* ============ dialogs ============ */
dialog{
  border:1px solid var(--line); border-radius:14px; background:var(--surface); color:var(--ink);
  padding:22px; max-width:min(420px, calc(100vw - 40px)); box-shadow:var(--shadow-lift);
}
dialog::backdrop{background:rgba(8,10,16,.55)}
dialog h2{font-family:var(--display); font-size:18px; margin:0 0 8px; letter-spacing:-.015em}
dialog p{margin:0 0 16px; color:var(--ink2); font-size:13.5px}
.dlg-actions{display:flex; justify-content:flex-end; gap:9px; margin-top:14px}
dialog input{
  width:100%; font-family:var(--mono); font-size:12.5px; color:var(--ink);
  padding:9px 11px; border:1px solid var(--line); border-radius:8px;
  background:var(--surface2);
}
.sync-hint{
  font-size:12.5px; color:var(--warn-text); background:var(--warn-soft);
  padding:8px 11px; border-radius:8px;
}
.act-list{list-style:none; margin:0; padding:0; max-height:50vh; overflow-y:auto}
.act-list li{display:flex; gap:10px; padding:7px 0; border-top:1px solid var(--line-soft); font-size:13px; color:var(--ink2); align-items:baseline}
.act-list li:first-child{border-top:0}
.act-ico{font-family:var(--mono); flex:none; width:16px; text-align:center}
.act-ico.done{color:var(--done-text)} .act-ico.progress{color:var(--prog-text)} .act-ico.todo{color:var(--muted)}
.act-what{flex:1; min-width:0}
.act-when{font-family:var(--mono); font-size:10.5px; color:var(--muted); flex:none}
.act-empty{font-size:13px; color:var(--muted); font-style:italic; margin:0}

/* ============ footer ============ */
footer{
  margin-top:36px; padding-top:18px; border-top:1px solid var(--line);
  font-size:12.5px; color:var(--muted); max-width:70ch;
}
footer p{margin:0 0 8px}

/* ============ motion ============ */
@media (prefers-reduced-motion:reduce){
  *{transition:none !important; animation:none !important; scroll-behavior:auto !important}
  html{scroll-behavior:auto}
}
@media (max-width:640px){
  body{padding:14px 14px 52px}
}