:root {
  --bg: #f5f6f8; --panel: #ffffff; --ink: #1a1d24; --muted: #6b7280; --line: #e3e6ea;
  --accent: #2f6fed; --accent-ink: #ffffff; --danger: #d23f3f; --warn: #d9830a; --ok: #1f9d55;
  --todo: #8a94a6; --doing: #2f6fed; --blocked: #d9830a; --done: #1f9d55;
  --radius: 10px; --shadow: 0 1px 2px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.05);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #15171c; --panel: #1e2129; --ink: #e8eaef; --muted: #9aa3b2; --line: #2c313b; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 4px 16px rgba(0,0,0,.3); }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font: 14px/1.45 var(--font); }
a { color: var(--accent); }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 6px 12px; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.danger { color: var(--danger); }
button.ghost { border-color: transparent; background: transparent; }
button:disabled { opacity: .5; cursor: default; }
input, select, textarea { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; width: 100%; }
textarea { min-height: 80px; resize: vertical; }
label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.hidden { display: none !important; }

/* sign in */
.signin { max-width: 380px; margin: 12vh auto; background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; }
.signin h1 { margin: 0 0 4px; font-size: 26px; letter-spacing: -.02em; }
.signin .err { color: var(--danger); margin-top: 10px; }
.footer { text-align: center; color: var(--muted); font-size: 12px; margin-top: 24px; }
.footer.lang { margin-top: 8px; } .footer.lang a { color: var(--muted); text-decoration: none; } .footer.lang a.on { color: var(--ink); font-weight: 600; }

/* shell */
.shell { display: grid; grid-template-rows: auto 1fr; grid-template-columns: minmax(0, 1fr); min-height: 100vh; }
.top { display: flex; align-items: center; gap: 14px; padding: 8px 16px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.top .logo { font-weight: 700; font-size: 18px; letter-spacing: -.02em; }
.logo { display: inline-flex; align-items: center; gap: 7px; }
.logo .cat { width: 1.35em; height: 1.35em; color: var(--ink); flex: none; }
.empty .cat { width: 48px; height: 48px; display: block; margin: 10px auto 4px; opacity: .5; }
.empty { text-align: center; padding: 20px; }
.tabs { display: flex; gap: 2px; }
.tabs button { border: none; background: transparent; padding: 6px 10px; border-radius: 8px; color: var(--muted); }
.tabs button.on { background: var(--bg); color: var(--ink); }
.badge { display: inline-block; min-width: 18px; padding: 0 5px; border-radius: 9px; background: var(--danger); color: #fff; font-size: 11px; text-align: center; line-height: 18px; margin-left: 4px; }
.main { padding: 16px; max-width: 1500px; width: 100%; margin: 0 auto; }
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar select, .toolbar input { width: auto; }

/* board */
.board { display: grid; grid-template-columns: repeat(4, minmax(220px, 1fr)); gap: 12px; align-items: start; }
.col { background: rgba(0,0,0,.03); border-radius: var(--radius); padding: 8px; min-height: 120px; }
@media (prefers-color-scheme: dark) { .col { background: rgba(255,255,255,.03); } }
.col h3 { margin: 4px 6px 10px; font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); display: flex; justify-content: space-between; }
.col.over { outline: 2px dashed var(--accent); }
.card { background: var(--panel); border-radius: 8px; box-shadow: var(--shadow); padding: 10px 12px; margin-bottom: 8px; cursor: pointer; border-left: 3px solid var(--todo); }
.card.doing { border-left-color: var(--doing); } .card.blocked { border-left-color: var(--blocked); } .card.done { border-left-color: var(--done); opacity: .75; }
.card .ref { font-size: 11px; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.card .title { font-weight: 600; margin: 2px 0 6px; }
.card .meta { display: flex; gap: 8px; align-items: center; font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.card .overdue { color: var(--danger); font-weight: 600; }
.card .soon { color: var(--warn); }
.pr { font-size: 11px; padding: 1px 6px; border-radius: 6px; border: 1px solid var(--line); }
.pr.high { color: var(--warn); border-color: var(--warn); } .pr.urgent { color: var(--danger); border-color: var(--danger); } .pr.low { opacity: .7; }
.avatar { display: inline-flex; width: 22px; height: 22px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 11px; align-items: center; justify-content: center; font-weight: 600; }
.progress { height: 4px; background: var(--line); border-radius: 2px; margin-top: 8px; overflow: hidden; }
.progress i { display: block; height: 100%; background: var(--accent); }

/* gantt */
.gantt-wrap { background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); padding: 8px; overflow: auto; }
.gantt .bar-wrapper .bar { fill: var(--accent); }
.gantt .bar-wrapper.done .bar { fill: var(--done); } .gantt .bar-wrapper.blocked .bar { fill: var(--blocked); } .gantt .bar-wrapper.todo .bar { fill: var(--todo); }
.gantt .bar-wrapper.late .bar { fill: var(--danger); }
.gantt .bar-progress { fill: rgba(0,0,0,.25); }
.gantt .bar-label { fill: #fff; font-weight: 600; }
.gantt .bar-label.big { fill: var(--ink); }

/* drawer */
.drawer-bg { position: fixed; inset: 0; background: rgba(0,0,0,.3); z-index: 10; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(560px, 100vw); background: var(--panel); z-index: 11; overflow: auto; padding: 18px 20px 40px; box-shadow: -8px 0 30px rgba(0,0,0,.15); }
.drawer h2 { margin: 6px 0 12px; font-size: 18px; }
.drawer h2 input { font-size: 18px; font-weight: 600; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.deps { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 12px; background: var(--bg); border: 1px solid var(--line); border-radius: 14px; padding: 2px 8px; cursor: pointer; }
.chip b { margin-left: 6px; color: var(--muted); }
.comment { border-top: 1px solid var(--line); padding: 10px 0; }
.comment .who { font-weight: 600; } .comment .when { color: var(--muted); font-size: 12px; margin-left: 6px; }
.history { font-size: 12px; color: var(--muted); }
.history li { margin: 2px 0; }

/* lists */
table { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; color: var(--muted); font-weight: 600; }
tr.unread td { font-weight: 600; }
.panel { background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px 18px; margin-bottom: 14px; max-width: 720px; }
.panel h3 { margin: 0 0 8px; }
.kbd { font-family: ui-monospace, Menlo, monospace; background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.4); border-radius: 4px; padding: 0 5px; }
code { font-family: ui-monospace, Menlo, monospace; background: var(--bg); padding: 1px 5px; border-radius: 4px; }

#toasts { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); display: flex; flex-direction: column; gap: 6px; z-index: 50; }
.toast { background: var(--ink); color: var(--bg); padding: 9px 14px; border-radius: 8px; box-shadow: var(--shadow); }
.toast.err { background: var(--danger); color: #fff; }

@media (max-width: 900px) {
  .board { grid-template-columns: 1fr; }
  .main { padding: 10px; }
  .top { flex-wrap: wrap; }
  .grid2 { grid-template-columns: 1fr; }
}

/* table view */
.tbl-wrap { overflow-x: auto; }
.tbl { background: transparent; box-shadow: none; border-collapse: separate; border-spacing: 0; }
.tbl td, .tbl th { border-bottom: 1px solid var(--line); padding: 7px 10px; background: var(--panel); }
.tbl tr.cols th { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); background: var(--panel); }
.tbl .grp-head td { background: transparent; border: none; padding: 18px 4px 6px; font-weight: 700; }
.tbl .grp.todo .gname { color: var(--todo); } .tbl .grp.doing .gname { color: var(--doing); } .tbl .grp.blocked .gname { color: var(--blocked); } .tbl .grp.done .gname { color: var(--done); }
.tbl .task-row td:first-child, .tbl .cols th:first-child, .tbl .add-tr td:first-child { border-left: 4px solid var(--todo); width: 28px; }
.tbl .grp.doing .task-row td:first-child, .tbl .grp.doing .cols th:first-child, .tbl .grp.doing .add-tr td:first-child { border-left-color: var(--doing); }
.tbl .grp.blocked .task-row td:first-child, .tbl .grp.blocked .cols th:first-child, .tbl .grp.blocked .add-tr td:first-child { border-left-color: var(--blocked); }
.tbl .grp.done .task-row td:first-child, .tbl .grp.done .cols th:first-child, .tbl .grp.done .add-tr td:first-child { border-left-color: var(--done); }
.task-row { cursor: pointer; } .task-row:hover td { background: var(--bg); }
.task-row.is-done .tt { color: var(--muted); text-decoration: line-through; }
.task-row .ref { font-family: ui-monospace, Menlo, monospace; font-size: 11px; margin-right: 6px; }
.task-row .tog { padding: 0 6px; font-size: 13px; }
.task-row .ttl { min-width: 280px; } .task-row .own { width: 44px; } .task-row .st { width: 140px; } .task-row .pr-cell { width: 80px; } .task-row .due { width: 90px; white-space: nowrap; } .task-row .prog { width: 110px; }
.task-row .prog .progress { margin: 0; height: 6px; }
.task-row .overdue { color: var(--danger); font-weight: 600; } .task-row .soon { color: var(--warn); }
.cnt { display: inline-block; font-size: 11px; color: var(--muted); background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 0 6px; margin-left: 6px; vertical-align: middle; }
.cnt.chat { background: transparent; border-color: transparent; margin-left: 2px; }
.avatar.empty { background: var(--line); color: var(--muted); }
.pill, .pill-select { display: inline-block; font-size: 12px; font-weight: 600; color: #fff; border-radius: 6px; padding: 3px 9px; border: none; width: auto; cursor: pointer; }
.pill.todo, .pill-select.todo { background: var(--todo); } .pill.doing, .pill-select.doing { background: var(--doing); } .pill.blocked, .pill-select.blocked { background: var(--blocked); } .pill.done, .pill-select.done { background: var(--done); }
.pill-select option { color: var(--ink); background: var(--panel); }
.sub-wrap > td { background: transparent !important; padding: 4px 0 10px 10px !important; }
.subtable { width: 100%; border-left: 4px solid var(--accent); border-radius: 0 8px 8px 0; overflow: hidden; }
.subtable th { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.subtable .task-row td:first-child { border-left: none; width: auto; }
.subtable .task-row .ttl { min-width: 200px; }
.add-tr td { background: transparent !important; padding: 2px 8px 10px !important; }
.add-input { border: 1px dashed var(--line); background: transparent; color: var(--accent); font-weight: 500; padding: 6px 10px; }
.add-input::placeholder { color: var(--accent); opacity: .85; }
.add-input:focus { border-style: solid; background: var(--panel); color: var(--ink); outline: none; }
.subs { display: flex; flex-direction: column; gap: 4px; margin-bottom: 6px; }
.subrow { display: flex; align-items: center; gap: 8px; }
.subrow input[type=checkbox] { width: auto; margin: 0; } .subrow.is-done .chip { text-decoration: line-through; color: var(--muted); }
@media (max-width: 900px) { .task-row .pr-cell, .task-row .prog, .tbl .cols th:nth-child(5), .tbl .cols th:nth-child(7) { display: none; } }

/* avatars */
.avatar.emoji { font-size: 13px; }
.avatar.big { width: 44px; height: 44px; font-size: 22px; }
.avatar.big:not(.emoji) { font-size: 16px; }
/* focus */
.focus { max-width: 760px; }
.focus-head { display: flex; align-items: baseline; gap: 12px; } .focus-head h2 { margin: 6px 0 10px; }
.focus-card { background: var(--panel); border-radius: 14px; box-shadow: var(--shadow); padding: 18px 20px; cursor: pointer; border-left: 5px solid var(--doing); }
.focus-card.next-one { border-left-color: var(--todo); }
.focus-card .ref { font-family: ui-monospace, Menlo, monospace; font-size: 12px; }
.focus-title { font-size: 22px; font-weight: 700; margin: 6px 0; letter-spacing: -.01em; }
.focus-card .desc { margin-top: 8px; }
.focus-actions { margin: 12px 0 18px; } .focus-actions button { padding: 9px 16px; font-size: 15px; }
.empty-focus { text-align: center; color: var(--muted); border-left-color: var(--line); } .empty-focus .cat { width: 64px; height: 64px; display: block; margin: 6px auto 10px; opacity: .6; }
.next-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 8px; }
.next-row { display: flex; align-items: center; gap: 10px; background: var(--panel); border-radius: 10px; padding: 10px 14px; box-shadow: var(--shadow); cursor: pointer; }
.next-row .num { width: 22px; height: 22px; border-radius: 50%; background: var(--bg); display: inline-flex; align-items: center; justify-content: center; font-size: 12px; color: var(--muted); }
.next-row .ref { font-family: ui-monospace, Menlo, monospace; font-size: 12px; color: var(--muted); }
.focus .overdue { color: var(--danger); font-weight: 600; } .focus .soon { color: var(--warn); }
/* onboarding */
.onboard { position: fixed; z-index: 12; left: 50%; top: 50%; transform: translate(-50%, -50%); width: min(560px, 94vw); max-height: 92vh; overflow: auto; background: var(--panel); border-radius: 16px; box-shadow: var(--shadow); padding: 22px 24px; }
.onboard h2 { margin: 0 0 4px; } .onboard h3 { margin: 18px 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.av-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 6px; }
.av-pick { font-size: 22px; padding: 6px 0; border-radius: 10px; } .av-pick.on { outline: 2px solid var(--accent); }
.col-pick { width: 26px; height: 26px; border-radius: 50%; border: 2px solid transparent; padding: 0; } .col-pick.on { border-color: var(--ink); }
/* drag */
tr.dragging td { opacity: .4; } tr.drop-before td { box-shadow: inset 0 2px 0 var(--accent); }