:root {
  --bg: #12141a;
  --bg-raised: #191c24;
  --bg-card: #1f232d;
  --border: #2a2f3b;
  --border-soft: #232833;
  --text: #e8eaf0;
  --text-dim: #9aa2b4;
  --text-faint: #6b7488;
  --accent: #4ec9d4;
  --danger: #ff6b6b;
  --warn: #ffb454;
  --ok: #6bd68a;
  --purple: #a78bfa;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans Thai", "Sarabun", sans-serif;
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ---------- top bar ---------- */

header.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 0 22px;
  height: 54px;
  background: rgba(18, 20, 26, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 650;
  letter-spacing: -.01em;
  display: flex;
  align-items: center;
  gap: 9px;
}

.brand .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(78, 201, 212, .16);
}

nav.tabs { display: flex; gap: 2px; }

nav.tabs a {
  padding: 6px 13px;
  border-radius: 7px;
  color: var(--text-dim);
  font-weight: 500;
  transition: background .12s, color .12s;
}
nav.tabs a:hover { background: var(--bg-card); color: var(--text); }
nav.tabs a.active { background: var(--bg-card); color: var(--text); }

.topbar .spacer { flex: 1; }

.sync-pill {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}

.sync-pill .live-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--text-faint);
  transition: background .3s, box-shadow .3s;
}
.sync-pill.connected .live-dot {
  background: var(--ok);
  box-shadow: 0 0 0 3px rgba(107, 214, 138, .15);
}
.sync-pill.stale .live-dot { background: var(--warn); }

/* ---------- layout ---------- */

main { padding: 22px; max-width: 1600px; margin: 0 auto; }

h1 { font-size: 19px; margin: 0 0 3px; font-weight: 620; letter-spacing: -.015em; }
.subtitle { color: var(--text-faint); font-size: 13px; margin: 0 0 20px; }

section { margin-bottom: 30px; }

h2 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--text-faint);
  font-weight: 600;
  margin: 0 0 12px;
}

/* ---------- summary tiles ---------- */

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 10px;
  margin-bottom: 30px;
}

.tile {
  background: var(--bg-raised);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.tile .value {
  font-size: 27px;
  font-weight: 620;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
  letter-spacing: -.02em;
}
.tile .label { font-size: 12px; color: var(--text-faint); margin-top: 2px; }
.tile.alert { border-color: rgba(255, 107, 107, .3); background: rgba(255, 107, 107, .05); }
.tile.alert .value { color: var(--danger); }
.tile.warn { border-color: rgba(255, 180, 84, .28); background: rgba(255, 180, 84, .05); }
.tile.warn .value { color: var(--warn); }

/* ---------- board columns ---------- */

.boards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(272px, 1fr));
  gap: 14px;
  align-items: start;
}

.board {
  background: var(--bg-raised);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.board-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-soft);
}
.board-head .name { font-weight: 600; font-size: 13px; flex: 1; letter-spacing: -.01em; }
.board-head .count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-faint);
  background: var(--bg-card);
  padding: 2px 7px;
  border-radius: 20px;
}
.board.empty { opacity: .58; }

.board-body { padding: 8px 10px 12px; }

.list-block { margin-bottom: 10px; }
.list-block:last-child { margin-bottom: 0; }

.list-name {
  font-size: 11px;
  color: var(--text-faint);
  padding: 3px 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card {
  display: block;
  background: var(--bg-card);
  border: 1px solid transparent;
  border-left: 2px solid var(--border);
  border-radius: 7px;
  padding: 8px 10px;
  margin-bottom: 5px;
  transition: border-color .12s, transform .12s;
}
.card:hover { border-color: var(--border); border-left-color: var(--accent); transform: translateX(1px); }
.card .title { font-size: 13px; line-height: 1.4; }

.card.overdue { border-left-color: var(--danger); }
.card.today   { border-left-color: var(--warn); }
.card.soon    { border-left-color: var(--purple); }
.card.done    { opacity: .55; }

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-top: 5px;
  font-size: 11px;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 1px 7px;
  border-radius: 20px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .01em;
}
.badge.overdue { background: rgba(255, 107, 107, .16); color: var(--danger); }
.badge.today   { background: rgba(255, 180, 84, .16); color: var(--warn); }
.badge.soon    { background: rgba(167, 139, 250, .16); color: var(--purple); }
.badge.stuck   { background: rgba(154, 162, 180, .13); color: var(--text-dim); }
.badge.done    { background: rgba(107, 214, 138, .14); color: var(--ok); }

.label-chip {
  width: 20px; height: 5px;
  border-radius: 3px;
  display: inline-block;
}

.empty-note {
  color: var(--text-faint);
  font-size: 12px;
  padding: 10px 4px;
  font-style: italic;
}

/* ---------- due buckets ---------- */

.bucket { margin-bottom: 26px; }

.bucket-head {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 10px;
}
.bucket-head .bar { width: 3px; height: 15px; border-radius: 2px; background: var(--border); }
.bucket-head h3 { margin: 0; font-size: 14px; font-weight: 600; }
.bucket-head .n { font-family: var(--mono); font-size: 12px; color: var(--text-faint); }
.bucket.overdue .bar { background: var(--danger); }
.bucket.today .bar   { background: var(--warn); }
.bucket.soon .bar    { background: var(--purple); }
.bucket.done .bar    { background: var(--ok); }

.due-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  background: var(--bg-raised);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  margin-bottom: 6px;
  transition: border-color .12s;
}
.due-row:hover { border-color: var(--border); }
.due-row .when {
  font-family: var(--mono);
  font-size: 12px;
  min-width: 128px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}
.due-row .what { flex: 1; min-width: 0; }
.due-row .what .title { font-size: 13.5px; }
.due-row .where { font-size: 11px; color: var(--text-faint); margin-top: 2px; }

/* ---------- table + form ---------- */

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-faint);
  font-weight: 600;
  padding: 8px 11px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
td {
  padding: 10px 11px;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: middle;
}
td.num { font-family: var(--mono); font-variant-numeric: tabular-nums; text-align: right; }
tbody tr:hover { background: var(--bg-raised); }
.table-wrap { overflow-x: auto; border: 1px solid var(--border-soft); border-radius: var(--radius); background: var(--bg-raised); }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}
.field { display: flex; flex-direction: column; gap: 5px; }
.field label { font-size: 11.5px; color: var(--text-faint); }
.field.wide { grid-column: 1 / -1; }

input, textarea, select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 8px 11px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  width: 100%;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(78, 201, 212, .12);
}
textarea { resize: vertical; min-height: 62px; }

button {
  background: var(--accent);
  color: #08272a;
  border: none;
  border-radius: 7px;
  padding: 8px 17px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: filter .12s;
}
button:hover { filter: brightness(1.1); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.ghost {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
}
button.ghost:hover { color: var(--text); border-color: var(--text-faint); }
button.danger-text {
  background: none;
  color: var(--text-faint);
  padding: 2px 6px;
  font-size: 12px;
  font-weight: 500;
}
button.danger-text:hover { color: var(--danger); }

.panel {
  background: var(--bg-raised);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 18px;
}

/* ---------- chart ---------- */

.chart { width: 100%; height: 190px; display: block; }
.chart .bar { fill: var(--accent); opacity: .82; }
.chart .bar:hover { opacity: 1; }
.chart .axis-label { fill: var(--text-faint); font-size: 10px; font-family: var(--mono); }
.chart .grid-line { stroke: var(--border-soft); stroke-width: 1; }

.chart-tabs { display: flex; gap: 4px; margin-bottom: 12px; }
.chart-tabs button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 12px;
  padding: 4px 11px;
  font-weight: 500;
}
.chart-tabs button.active { background: var(--bg-card); color: var(--text); border-color: var(--text-faint); }

/* ---------- login ---------- */

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 22px;
}
.login-card {
  width: 100%;
  max-width: 340px;
  background: var(--bg-raised);
  border: 1px solid var(--border-soft);
  border-radius: 13px;
  padding: 30px 26px;
}
.login-card h1 { font-size: 17px; margin-bottom: 4px; }
.login-card .subtitle { margin-bottom: 22px; }
.login-card .field { margin-bottom: 13px; }
.login-card button { width: 100%; margin-top: 7px; padding: 10px; }

.error-msg {
  color: var(--danger);
  font-size: 12.5px;
  margin-top: 12px;
  min-height: 18px;
}

.toast {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%) translateY(70px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 13px;
  transition: transform .22s ease;
  z-index: 50;
  box-shadow: 0 8px 28px rgba(0, 0, 0, .4);
}
.toast.show { transform: translateX(-50%) translateY(0); }

@media (max-width: 640px) {
  header.topbar { gap: 12px; padding: 0 14px; }
  .brand span:not(.dot) { display: none; }
  main { padding: 16px 14px; }
  .due-row { flex-direction: column; align-items: flex-start; gap: 5px; }
  .due-row .when { min-width: 0; }
}