:root {
  --paper: #f7f3ee;
  --paper-deep: #eee5dc;
  --milk: #e6d2bf;
  --oat: #d9c8b7;
  --fog: #d7d5cf;
  --caramel: #b9875e;
  --clay: #a66f56;
  --ink: #2c2925;
  --muted: #746b63;
  --line: rgba(88, 75, 62, 0.18);
  --shadow: rgba(95, 78, 62, 0.14);
  --radius: 8px;
  color-scheme: light;
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--paper);
}

body {
  min-height: 100dvh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(230, 210, 191, 0.78), rgba(247, 243, 238, 0.92) 42%, rgba(215, 213, 207, 0.86)),
    var(--paper);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(1480px, 100%);
  margin: 0 auto;
  padding: 22px;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 2px 20px;
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.04;
  letter-spacing: 0;
}

.sync-pill {
  min-width: 92px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 252, 248, 0.62);
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.sync-pill.error {
  color: #8a3324;
  border-color: rgba(138, 51, 36, 0.28);
  background: rgba(255, 236, 226, 0.72);
}

.composer {
  margin-bottom: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 252, 248, 0.68);
  box-shadow: 0 18px 40px var(--shadow);
}

.composer form {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 150px 180px auto;
  gap: 8px;
  padding: 10px;
}

input,
select {
  min-width: 0;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink);
  padding: 0 12px;
  outline: none;
}

input:focus,
select:focus {
  border-color: rgba(166, 111, 86, 0.72);
  box-shadow: 0 0 0 3px rgba(166, 111, 86, 0.15);
}

.composer button,
.filter-button {
  height: 42px;
  border: 1px solid rgba(94, 68, 50, 0.24);
  border-radius: 7px;
  background: var(--ink);
  color: #fffaf4;
  padding: 0 16px;
}

.filters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 0 18px;
}

.filter-button {
  flex: 0 0 auto;
  background: rgba(255, 252, 248, 0.58);
  color: var(--muted);
}

.filter-button.active {
  background: var(--ink);
  color: #fffaf4;
}

.status-panel {
  margin: 0 0 16px;
  padding: 12px 14px;
  border: 1px solid rgba(138, 51, 36, 0.24);
  border-radius: var(--radius);
  background: rgba(255, 239, 231, 0.68);
  color: #773627;
}

.hidden {
  display: none !important;
}

.board {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.quadrant {
  min-height: 420px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: rgba(255, 252, 248, 0.58);
  box-shadow: 0 12px 28px rgba(95, 78, 62, 0.08);
}

.quadrant[data-quadrant="重要緊急"] {
  background: rgba(235, 211, 198, 0.68);
}

.quadrant[data-quadrant="重要不緊急"] {
  background: rgba(229, 219, 196, 0.7);
}

.quadrant[data-quadrant="不重要緊急"] {
  background: rgba(216, 218, 210, 0.74);
}

.quadrant[data-quadrant="不重要不緊急"] {
  background: rgba(226, 219, 211, 0.72);
}

.quadrant.drag-over {
  outline: 2px solid rgba(166, 111, 86, 0.58);
  outline-offset: 2px;
}

.quadrant-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}

.quadrant-header h2 {
  font-size: 17px;
  line-height: 1.25;
}

.count {
  min-width: 28px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.54);
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  padding: 3px 8px;
}

.stack {
  display: grid;
  gap: 8px;
}

.task-card {
  border: 1px solid rgba(88, 75, 62, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 252, 248, 0.76);
  padding: 10px;
  box-shadow: 0 8px 18px rgba(95, 78, 62, 0.08);
}

.task-card[draggable="true"] {
  cursor: grab;
}

.task-card.dragging {
  opacity: 0.5;
}

.task-row {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 8px;
  align-items: start;
}

.task-check {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--clay);
}

.task-title {
  overflow-wrap: anywhere;
  line-height: 1.35;
}

.task-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 9px;
}

.owner-chip {
  border-radius: 999px;
  background: rgba(44, 41, 37, 0.08);
  color: var(--muted);
  font-size: 12px;
  padding: 4px 8px;
}

.move-select {
  width: min(150px, 100%);
  height: 32px;
  padding: 0 8px;
  font-size: 12px;
}

.lower-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.44fr);
  gap: 12px;
  margin-top: 12px;
}

.completed-panel,
.missing-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: rgba(255, 252, 248, 0.55);
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}

.section-heading h2 {
  font-size: 17px;
}

.section-heading span,
.empty {
  color: var(--muted);
  font-size: 13px;
}

.task-card.done .task-title {
  color: var(--muted);
  text-decoration: line-through;
}

@media (max-width: 1080px) {
  .board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .app-shell {
    padding: 16px 12px 24px;
  }

  .topbar {
    align-items: start;
    flex-direction: column;
  }

  .composer form {
    grid-template-columns: 1fr;
  }

  .board,
  .lower-grid {
    grid-template-columns: 1fr;
  }

  .quadrant {
    min-height: 260px;
  }
}