:root {
  --bg: #0b1020;
  --panel: #131a2a;
  --panel-2: #0f1525;
  --text: #e9eefc;
  --muted: #a7b0c3;
  --primary: #6aa1ff;
  --accent: #7ee787;
  --danger: #ff6b6b;
  --border: #263147;
  --hover: #1a2338;
  --shadow: 0 10px 30px rgba(0, 0, 0, .25);
}

:root.light {
  --bg: #f7f9ff;
  --panel: #ffffff;
  --panel-2: #f1f4fb;
  --text: #0b1020;
  --muted: #4f5b74;
  --primary: #2b63ff;
  --accent: #108a4a;
  --danger: #d84040;
  --border: #dfe6fb;
  --hover: #eef3ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu;
}

.app-header,
.app-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
}

.app-header {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.header-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

#new-task {
  display: flex;
  gap: 8px;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 6px;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

#new-task input {
  width: 280px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  padding: 8px;
}

#new-task select {
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  padding: 8px;
  border-left: 1px solid var(--border);
}

.priority-option {
  background-color: var(--panel);
  color: var(--text);
}

button {
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--primary);
  color: white;
  cursor: pointer;
  box-shadow: var(--shadow);
}

button.secondary {
  background: var(--panel);
  color: var(--text);
}

button.danger {
  background: var(--danger);
}

.board {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.column {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.column-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
}

.count {
  color: var(--muted);
}

.place {
  min-height: 260px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.place:empty::after {
  content: 'Drag here or add a task';
  color: var(--muted);
  font-size: 13px;
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 8px 10px;
}

.place.hovered {
  outline: 2px dashed var(--primary);
  outline-offset: -6px;
  background: linear-gradient(0deg, rgba(106, 161, 255, .06), transparent 60%);
}

.item {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, .2);
  align-items: flex-start;
}

.item .item-main {
  flex: 1;
  min-width: 0;
}

.item .title {
  display: block;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  line-height: 1.35;
}

.item .title.clamp-4 {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 4;
  overflow: hidden;
}

.meta-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 8px;
}

.badges {
  display: flex;
  gap: 6px;
  align-items: center;
}

.badge {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--hover);
}

.badge.priority-high {
  border-color: var(--danger);
  color: var(--danger);
}

.badge.priority-med {
  border-color: var(--primary);
  color: var(--primary);
}

.badge.priority-low {
  border-color: var(--accent);
  color: var(--accent);
}

.show-more {
  font-size: 12px;
  background: var(--hover);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 8px;
  cursor: pointer;
  display: none;
}

.item-actions {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

.item-actions button {
  background: var(--hover);
  color: var(--text);
  border-color: var(--border);
}

.item.hold {
  opacity: .85;
  transform: scale(.99);
}

.item.dragging {
  box-shadow: 0 8px 30px rgba(0, 0, 0, .35);
}

.drop-indicator {
  height: 10px;
  border-radius: 6px;
  border: 1px dashed var(--border);
  background: rgba(106, 161, 255, .15);
  margin: -5px 0 5px;
}

.inline-edit {
  width: 100%;
  display: block;
  resize: vertical;
  background: transparent;
  color: inherit;
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 6px 8px;
  line-height: 1.35;
  white-space: pre-wrap;
}

#sort-toggle {
  --on-bg: #22c55e;
  --on-tx: #051b0e;
  --off-bg: #475569;
  --off-tx: #e5e7eb;

  border: 1px solid transparent;
  transition: background-color .2s ease, color .2s ease, box-shadow .2s ease, border-color .2s ease;
}

#sort-toggle[aria-pressed="true"] {
  background-color: var(--on-bg);
  color: var(--on-tx);
  border-color: rgba(0, 0, 0, .1);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, .25);
}

#sort-toggle[aria-pressed="true"]:hover,
#sort-toggle[aria-pressed="true"]:focus-visible {
  filter: brightness(1.05);
}

#sort-toggle[aria-pressed="false"] {
  background-color: var(--off-bg);
  color: var(--off-tx);
  border-color: rgba(255, 255, 255, .06);
  box-shadow: none;
}

#sort-toggle[aria-pressed="false"]:hover,
#sort-toggle[aria-pressed="false"]:focus-visible {
  filter: brightness(1.1);
}

#sort-toggle {
  font-weight: 600;
  letter-spacing: .2px;
}

@media (max-width: 840px) {

  .app-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .header-actions {
    justify-content: center;
  }

  #new-task {
    width: 100%;
    justify-content: center;
  }

  #new-task input {
    width: 100%;
  }

  .board {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .column {
    width: 100%;
    max-width: 680px;
  }

  .app-footer {
    text-align: center;
  }
}