:root{
  --bg:#f6f7f9; --ink:#1b2230; --muted:#6b7585; --line:#e4e7ec; --card:#fff;
  --accent:#4f46e5; --accent-ink:#3730a3; --done:#16a34a; --radius:12px;
  --shadow:0 1px 2px rgba(20,30,50,.05),0 8px 24px rgba(20,30,50,.06);
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
.wrap{max-width:1100px;margin:0 auto;padding:0 18px 60px}
a{color:inherit}

.topbar{background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:14px 18px}
.brand{font-size:20px;font-weight:800;text-decoration:none;letter-spacing:-.02em}
.brand span{color:var(--accent)}
.userbox{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--muted)}
.btn-ghost{border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 12px;cursor:pointer;text-decoration:none;color:var(--muted);font:inherit}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-solid{border:none;background:var(--accent);color:#fff;border-radius:8px;padding:8px 14px;cursor:pointer;font:inherit;font-weight:600}
.btn-solid:hover{background:var(--accent-ink)}

/* Week bar */
.weekbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:22px 0 14px;flex-wrap:wrap}
.weeknav{display:flex;align-items:center;gap:10px}
.weeklabel{display:flex;flex-direction:column;line-height:1.1}
.weeklabel span{font-size:18px;font-weight:700}
.weeklabel small{color:var(--muted);font-size:12px}
.weekmeta{display:flex;align-items:center;gap:12px}
.progress{width:160px;height:8px;background:var(--line);border-radius:999px;overflow:hidden}
.progress #progress-bar{height:100%;width:0;background:var(--accent);transition:width .25s ease}
.streak{font-weight:700;color:#b45309}
.muted{color:var(--muted);font-size:13px}

.carry{display:flex;align-items:center;gap:12px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:10px;padding:10px 14px;margin-bottom:14px;font-size:14px}

.addbar{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.addbar input{padding:9px 11px;border:1px solid var(--line);border-radius:9px;font:inherit;background:#fff}
.addbar #add-title{flex:1;min-width:220px}
.addbar .cat{width:130px}
.addbar .target{width:64px}

/* Board */
.board{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:760px){.board{grid-template-columns:1fr}}
.col{background:#eef0f3;border:1px solid var(--line);border-radius:var(--radius);padding:10px;min-height:120px}
.col.over{outline:2px dashed var(--accent);outline-offset:-4px}
.col-done{background:#eaf7ee}
.col-head{display:flex;justify-content:space-between;font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:8px;padding:0 2px}
.col-body{min-height:40px;display:flex;flex-direction:column;gap:8px}
.col-empty{color:#aeb6c2;text-align:center;font-size:.85rem;padding:8px 0}

.card{background:var(--card);border:1px solid var(--line);border-radius:9px;padding:9px 11px;box-shadow:var(--shadow);cursor:grab}
.card.dragging{opacity:.5}
.card.is-done .card-title{text-decoration:line-through;color:var(--muted)}
.card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}
.card-title{font-weight:600;font-size:.92rem}
.del{border:none;background:none;color:#c2c8d2;font-size:18px;line-height:1;cursor:pointer;padding:0 2px}
.del:hover{color:#ef4444}
.card-foot{display:flex;align-items:center;gap:8px;margin-top:7px;flex-wrap:wrap}
.chip{font-size:.72rem;background:#eef2ff;color:var(--accent-ink);border-radius:999px;padding:1px 9px;font-weight:600}
.counter{border:1px solid var(--line);background:#fff;border-radius:999px;padding:1px 10px;font-size:.74rem;font-weight:700;color:var(--accent-ink);cursor:pointer}
.counter:hover{border-color:var(--accent)}

/* Heatmap */
.heatmap-wrap{margin-top:26px}
.heatmap-wrap summary{cursor:pointer;color:var(--muted);font-size:14px}
.heatmap{display:flex;gap:5px;margin-top:12px;flex-wrap:wrap}
.hm{width:20px;height:20px;border-radius:5px;background:#e4e7ec}
.hm-0{background:#eef0f3}
.hm-1{background:#fde68a}
.hm-2{background:#86efac}
.hm-3{background:#16a34a}

/* Login */
.login-card{max-width:380px;margin:12vh auto 0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px 30px;text-align:center;box-shadow:var(--shadow)}
.login-card h1{font-size:26px;font-weight:800;margin:0 0 4px}
.login-card h1 span{color:var(--accent)}
.login-card .sub{color:var(--muted);margin:0 0 22px}
.btn-ms{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:11px 18px;text-decoration:none;color:var(--ink);font-weight:600}
.btn-ms:hover{border-color:var(--accent)}
.alert{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;border-radius:8px;padding:9px 12px;font-size:14px;margin-bottom:16px}