/* 任務管理系統 — 樣式（沿用 design-tracker tokens + 任務牆/清單/Modal/404/登入）*/
:root{
  --bg:#F4F5F9;--surface:#FFFFFF;--border:#E2E4EE;
  --text:#1E1A36;--muted:#8A8BAE;--accent:#7C3AED;--accent-soft:#EDE7FB;
  --red:#E11D48;--green:#059669;--orange:#EA580C;--yellow:#D97706;--blue:#2563EB;
  --radius:14px;--shadow:0 1px 3px rgba(30,26,54,.06),0 4px 16px rgba(30,26,54,.04);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Segoe UI","PingFang TC","Microsoft JhengHei",sans-serif;
  background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
.muted{color:var(--muted)}
.hidden{display:none!important}

/* ── 共用 ── */
.btn{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:9px 16px;font-size:13px;font-weight:600;transition:.15s}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:none;border:1px solid var(--border);color:var(--muted)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn.sm{padding:5px 11px;font-size:12px;border-radius:8px}
.chip{display:inline-flex;align-items:center;gap:5px;border-radius:20px;padding:3px 10px;font-size:12px;font-weight:600}
.avatar{width:30px;height:30px;border-radius:50%;object-fit:cover;background:var(--accent-soft);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:var(--accent);flex-shrink:0}
.topbar{display:flex;align-items:center;gap:14px;padding:14px 26px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}
.topbar .brand{font-weight:800;font-size:16px;letter-spacing:.3px}
.topbar .brand b{color:var(--accent)}
.spacer{flex:1}
.wrap{max-width:1180px;margin:0 auto;padding:24px 26px}

/* ── 登入 / 首頁 ── */
.hero{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:radial-gradient(1200px 600px at 50% -10%,var(--accent-soft),var(--bg));padding:24px;text-align:center}
.hero .emoji{font-size:72px;line-height:1;margin-bottom:8px;filter:drop-shadow(0 6px 14px rgba(124,58,237,.25))}
.hero h1{font-size:30px;margin:8px 0 4px}
.hero p{color:var(--muted);margin:0 0 26px}
.card-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:26px;width:100%;max-width:360px;text-align:left}
.card-box label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin:12px 0 5px}
.card-box input{width:100%;border:1px solid var(--border);border-radius:9px;padding:10px 12px;font-size:14px;font-family:inherit}
.card-box input:focus{outline:none;border-color:var(--accent)}
.slack-btn{display:flex;align-items:center;justify-content:center;gap:9px;width:100%;background:#4A154B;color:#fff;
  border:none;border-radius:10px;padding:12px;font-weight:700;font-size:14px;margin-bottom:8px}
.divider{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px;margin:16px 0}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--border)}
.err-msg{color:var(--red);font-size:12px;margin-top:8px;min-height:16px}

/* ── 任務牆 ── */
.wall-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.wall-head h1{font-size:24px;margin:0 0 2px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow)}
.stat .n{font-size:26px;font-weight:800}
.stat .l{font-size:12px;color:var(--muted);font-weight:600}
.wall-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:start}
.wall-col h3{font-size:13px;font-weight:700;color:var(--muted);margin:0 0 10px;display:flex;align-items:center;gap:7px}
.wall-col .dot{width:8px;height:8px;border-radius:50%}
.board-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:15px 16px;box-shadow:var(--shadow);
  margin-bottom:12px;cursor:pointer;transition:.15s;border-left:3px solid var(--accent)}
.board-card:hover{transform:translateY(-2px);box-shadow:0 6px 22px rgba(30,26,54,.10)}
.board-card.drag-over{border-color:var(--accent);background:var(--accent-soft)}
.board-card h4{margin:0 0 5px;font-size:15px}
.board-card .desc{font-size:12px;color:var(--muted);margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.board-card .meta{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted)}
.board-card .slug{font-family:ui-monospace,monospace;background:var(--bg);border-radius:5px;padding:1px 6px}
.col-empty{color:var(--muted);font-size:12px;border:1px dashed var(--border);border-radius:10px;padding:16px;text-align:center}

/* ── 清單檢視 ── */
.board-top{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:18px;flex-wrap:wrap}
.board-top h1{font-size:22px;margin:0 0 3px}
.board-top .crumb{font-size:12px;color:var(--muted);margin-bottom:4px}
.board-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
table{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);font-size:13px;vertical-align:middle}
th{background:#FAFAFD;font-size:11px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.4px;white-space:nowrap;position:relative}
th[draggable]{cursor:grab}
th.drag-over{background:var(--accent-soft)}
tbody tr[draggable]{cursor:grab}
tbody tr.drag-over td{box-shadow:inset 0 2px 0 var(--accent)}
tbody tr:hover{background:#FBFAFF}
td .cell-input{width:100%;border:1px solid transparent;background:none;border-radius:6px;padding:5px 7px;font-size:13px;font-family:inherit;color:inherit}
td .cell-input:hover{border-color:var(--border)}
td .cell-input:focus{outline:none;border-color:var(--accent);background:#fff}
.cat-pill{display:inline-flex;align-items:center;gap:5px;border-radius:20px;padding:2px 10px;font-size:12px;font-weight:600}
.status-sel{border:none;border-radius:20px;padding:4px 10px;font-size:12px;font-weight:700;cursor:pointer}
.st-todo{background:#EEF0F6;color:#5B5F7B}.st-wip{background:#DBEAFE;color:#1D4ED8}
.st-paused{background:#FEF3C7;color:#B45309}.st-done{background:#D1FAE5;color:#047857}
.qa-input{width:100%;border:1px dashed var(--border);background:none;border-radius:6px;padding:6px 8px;font-size:13px;font-family:inherit}
.col-add{margin-left:6px;border:1px dashed var(--border);background:none;color:var(--muted);border-radius:7px;padding:3px 8px;font-size:12px}
.row-del{border:none;background:none;color:var(--muted);font-size:15px;opacity:0;transition:.1s}
tr:hover .row-del{opacity:1}.row-del:hover{color:var(--red)}

/* ── Modal ── */
.modal-bg{position:fixed;inset:0;background:rgba(30,26,54,.45);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal{background:var(--surface);border-radius:var(--radius);width:100%;max-width:440px;box-shadow:0 20px 60px rgba(0,0,0,.25);max-height:88vh;overflow:auto}
.modal-hd{padding:18px 22px;border-bottom:1px solid var(--border);font-weight:700;display:flex;justify-content:space-between;align-items:center}
.modal-bd{padding:20px 22px}
.modal-bd label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin:12px 0 5px}
.modal-bd label:first-child{margin-top:0}
.modal-bd input,.modal-bd select,.modal-bd textarea{width:100%;border:1px solid var(--border);border-radius:9px;padding:9px 11px;font-size:14px;font-family:inherit}
.modal-bd input:focus,.modal-bd select:focus,.modal-bd textarea:focus{outline:none;border-color:var(--accent)}
.modal-ft{padding:14px 22px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:9px}
.x{border:none;background:none;font-size:20px;color:var(--muted);line-height:1}
.member-row{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--border)}
.member-row:last-child{border:none}
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:var(--text);color:#fff;
  padding:10px 18px;border-radius:24px;font-size:13px;z-index:80;box-shadow:0 8px 24px rgba(0,0,0,.25);opacity:0;transition:.2s}
.toast.show{opacity:1}
@media(max-width:820px){.stats,.wall-cols{grid-template-columns:1fr}}