@font-face {
  font-family: 'Instrument Sans';
  src: url('/fonts/instrument-sans-latin.woff2') format('woff2');
  font-weight: 400 700;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Instrument Sans';
  src: url('/fonts/instrument-sans-latin-ext.woff2') format('woff2');
  font-weight: 400 700;
  font-display: swap;
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --bg: #f2f4f8;
  --surface: #ffffff;
  --text: #16202f;
  --muted: #5d6b80;
  --line: #dde2ea;
  --blue: #3b72e0;
  --teal: #1fa98c;
  --red: #d64545;
  --red-soft: #fdecec;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 'Instrument Sans', system-ui, -apple-system, sans-serif;
}
[hidden] { display: none !important; }

h1 { font-size: 1.4rem; margin: 0; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }
h3 { font-size: 0.95rem; margin: 16px 0 8px; color: var(--muted); }

button, input, select, textarea { font: inherit; color: inherit; }
input, select, textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus, button:focus-visible, .task:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 1px;
}
label { display: block; font-size: 0.9rem; color: var(--muted); margin-bottom: 12px; }
label > input, label > select, label > textarea { margin-top: 4px; color: var(--text); }
label.check, label.toggle { display: flex; align-items: center; gap: 8px; color: var(--text); }
label.check input, label.toggle input { width: auto; margin: 0; }

button {
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
}
button.primary { background: var(--blue); border-color: var(--blue); color: #fff; font-weight: 600; }
button.danger { color: var(--red); border-color: #f1c4c4; }
button.ghost { background: transparent; }

.center { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.card { background: var(--surface); border-radius: var(--radius); padding: 24px; box-shadow: 0 1px 3px rgba(22, 32, 47, 0.08); }
.narrow { width: 100%; max-width: 380px; }
.narrow h1 { margin-bottom: 16px; }
.narrow button { width: 100%; }
.muted { color: var(--muted); font-size: 0.9rem; }
.error { color: var(--red); min-height: 1.2em; margin: 8px 0 0; font-size: 0.9rem; }
.note { color: var(--teal); min-height: 1.2em; margin: 8px 0 0; font-size: 0.9rem; }

.bar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(242, 244, 248, 0.95);
  border-bottom: 1px solid var(--line);
}
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.actions label.toggle { margin: 0 4px; }

#board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 16px;
  max-width: 1400px;
  margin: 0 auto;
}
.column { background: #e9edf3; border-radius: var(--radius); padding: 14px; min-width: 0; }
.column.mine { background: #e3ebfb; }
.column h2 { display: flex; align-items: center; gap: 8px; }
.count { font-size: 0.8rem; background: var(--surface); border-radius: 999px; padding: 1px 9px; color: var(--muted); }
.list { display: grid; gap: 8px; }
.empty { color: var(--muted); font-size: 0.9rem; margin: 4px 0; }

.task {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: var(--surface);
  border-radius: 10px;
  padding: 11px 12px;
  border-left: 4px solid transparent;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(22, 32, 47, 0.06);
}
.task:hover { box-shadow: 0 2px 8px rgba(22, 32, 47, 0.1); }
.task input[type='checkbox'] { width: 20px; height: 20px; margin: 2px 0 0; flex: none; accent-color: var(--teal); cursor: pointer; }
.task .body { min-width: 0; }
.task .title { margin: 0; overflow-wrap: anywhere; }
.task .meta { margin: 4px 0 0; display: flex; flex-wrap: wrap; gap: 4px 10px; font-size: 0.8rem; color: var(--muted); }
.task.important { border-left-color: var(--red); background: var(--red-soft); }
.task.done { opacity: 0.6; }
.task.done .title { text-decoration: line-through; }
.flag { color: var(--red); font-weight: 700; }
.due.overdue { color: var(--red); font-weight: 600; }
.tag { background: #e7f6f2; color: #137a64; border-radius: 6px; padding: 0 6px; }
.more { color: var(--blue); }

dialog {
  width: min(640px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  border: none;
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 12px 40px rgba(22, 32, 47, 0.25);
}
dialog::backdrop { background: rgba(22, 32, 47, 0.35); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-items: end; }
.buttons { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
#customer-link { display: inline-block; margin-bottom: 8px; color: var(--blue); font-size: 0.9rem; }
details { margin-top: 16px; }
summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; }
#history { padding-left: 18px; font-size: 0.85rem; color: var(--muted); }
.settings form, .settings > div { border-top: 1px solid var(--line); padding-top: 4px; margin-top: 12px; }
.settings h2 + form { border-top: none; }
pre { white-space: pre-wrap; word-break: break-all; background: var(--bg); padding: 10px; border-radius: 8px; font-size: 0.8rem; }

@media (max-width: 860px) {
  #board { grid-template-columns: 1fr; }
  .column.mine { order: -1; }
  .row { grid-template-columns: 1fr; }
}