:root {
  --bg: #fafafa;
  --surface: #fff;
  --text: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --danger: #dc2626;
  --radius: 8px;
  --maxw: 960px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #181b22;
    --text: #e6e6e6;
    --muted: #8a8f98;
    --border: #2a2f3a;
    --accent: #60a5fa;
    --danger: #f87171;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
a { color: inherit; text-decoration: none; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.err { color: var(--danger); }

/* topbar */
.topbar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 12px 20px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--surface); z-index: 10;
}
.brand { font-weight: 700; font-size: 18px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; flex: 1; }
.chip {
  font-size: 12px; padding: 3px 9px; border-radius: 999px;
  border: 1px solid var(--border); background: color-mix(in srgb, var(--c, var(--accent)) 12%, transparent);
  white-space: nowrap;
}
.chip:hover { border-color: var(--c, var(--accent)); }
.chip.small { font-size: 11px; padding: 2px 7px; }
.stats { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }

button {
  font: inherit; cursor: pointer; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); border-radius: var(--radius);
  padding: 6px 12px;
}
button:hover { border-color: var(--accent); }
.ghost { border-color: transparent; color: var(--muted); }
.add { background: var(--accent); color: #fff; border-color: var(--accent); }
.danger { color: var(--danger); border-color: var(--danger); }
.icon {
  border: none; background: transparent; color: var(--muted);
  padding: 2px 6px; font-size: 16px; line-height: 1;
}

/* home */
.home, .project { max-width: var(--maxw); margin: 0 auto; padding: 20px; }
.home-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.home-head h2 { margin: 0; font-size: 20px; }
.empty { color: var(--muted); padding: 40px 0; text-align: center; }
.section {
  margin: 28px 0 8px; font-size: 12px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); font-weight: 600;
}

.tasklist { list-style: none; padding: 0; margin: 0; }
.row {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 4px 11px 10px; border-bottom: 1px solid var(--border);
  border-left: 3px solid var(--border);
}
.row[data-status="todo"]  { border-left-color: #22c55e; }
.row[data-status="doing"] { border-left-color: #f59e0b; }
.row[data-status="done"]  { border-left-color: #ef4444; }
.row-title { flex: 1; min-width: 0; word-break: break-word; cursor: pointer; font-size: 15px; padding-right: 8px; }
.row-title:hover { color: var(--accent); }
.seg-group { display: flex; gap: 0; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; flex-shrink: 0; }
.seg { border: none; background: transparent; color: var(--muted); font-size: 11px; padding: 5px 10px; cursor: pointer; border-radius: 0; line-height: 1; }
.seg + .seg { border-left: 1px solid var(--border); }
.seg:hover { color: var(--text); }
.seg.on { background: var(--sc); color: #fff; }
@media (max-width: 520px) {
  .seg { padding: 5px 7px; font-size: 10px; }
  .chip.small { display: none; }   /* su mobile stretto nascondo il chip progetto per fare spazio al testo */
}

/* project */
.back { color: var(--muted); font-size: 13px; }
.proj-head h1 { margin: 6px 0; font-size: 22px; border-left: 3px solid var(--c, var(--accent)); padding-left: 10px; }
.progress { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; margin: 10px 0 4px; }
.bar { height: 100%; background: var(--c, var(--accent)); transition: width .3s; }

.proj-actions { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 8px; }
.brief { margin: 16px 0; padding: 10px 14px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.brief summary { cursor: pointer; color: var(--muted); }
.brief-full { margin-top: 10px; }
.brief-full h3, .brief-full h4 { margin: 12px 0 4px; }
.brief-full ul { margin: 4px 0; padding-left: 20px; }

.add-row { margin: 14px 0; }
.add-row input { width: 100%; font: inherit; padding: 9px 12px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); }
.add-row input:focus { outline: none; border-color: var(--accent); }

.cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.col h4 { margin: 0 0 8px; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 8px 10px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px;
}
.card-title { flex: 1; min-width: 0; word-break: break-word; cursor: pointer; font-size: 14px; }
.card-title:hover { color: var(--accent); }
.card-actions { display: flex; gap: 2px; opacity: .6; }
.card:hover .card-actions { opacity: 1; }

/* login */
.login {
  max-width: 280px; margin: 80px auto; display: flex; flex-direction: column; gap: 10px;
}
.login h1 { margin: 0 0 6px; text-align: center; }
.login input { font: inherit; padding: 10px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); }
.login button { background: var(--accent); color: #fff; border-color: var(--accent); padding: 10px; }

/* modal */
.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.5);
  display: flex; align-items: center; justify-content: center; z-index: 100; padding: 16px;
}
.modal-box {
  background: var(--surface); border-radius: var(--radius); padding: 16px;
  width: 100%; max-width: 460px; display: flex; flex-direction: column; gap: 8px;
}
.modal-box input, .modal-box select, .modal-box textarea {
  font: inherit; padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg); color: var(--text);
}
.modal-box textarea { min-height: 70px; resize: vertical; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; }

@media (max-width: 640px) {
  .cols { grid-template-columns: 1fr; }
  .topbar { padding: 10px 12px; gap: 8px; }
  .home, .project { padding: 14px; }
}