:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1c1c1e;
  --text-muted: #6b6b70;
  --border: #e2e2e0;
  --accent: #2f6f4f;
  --accent-contrast: #ffffff;
  --danger: #b3392c;
  --danger-contrast: #ffffff;
  --state-review: #b8790a;
  --state-approved: #2f6f4f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16171a;
    --surface: #212226;
    --text: #eceeee;
    --text-muted: #a1a3a8;
    --border: #35363b;
    --accent: #4caf7d;
    --accent-contrast: #0e1210;
    --danger: #e0685a;
    --danger-contrast: #2a0e0a;
    --state-review: #e0a83f;
    --state-approved: #4caf7d;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
}

h1, h2 {
  margin: 0 0 0.5rem;
}

.hidden {
  display: none !important;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-muted);
}

main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 1rem 3rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.filters label {
  display: flex;
  flex-direction: column;
  font-size: 0.8rem;
  color: var(--text-muted);
  gap: 0.2rem;
}

.checkbox-label {
  flex-direction: row !important;
  align-items: center;
  gap: 0.4rem !important;
}

select, input[type="text"], input[type="password"], input[type="date"], textarea {
  font-size: 1rem;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
}

textarea {
  resize: vertical;
  width: 100%;
}

.btn {
  font-size: 1rem;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  min-height: 44px;
}

.btn-small {
  min-height: 36px;
  padding: 0.4rem 0.75rem;
  font-size: 0.9rem;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
}

.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn-danger {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
}

.btn-block {
  width: 100%;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  white-space: nowrap;
}

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

.state-pill {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  white-space: nowrap;
}

.state-review {
  color: var(--state-review);
  border: 1px solid var(--state-review);
}

.state-approved {
  color: var(--state-approved);
  border: 1px solid var(--state-approved);
}

.columns-filter {
  position: relative;
}

.columns-panel {
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  z-index: 50;
  min-width: 180px;
}

.columns-panel-item {
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 0.5rem !important;
  padding: 0.35rem 0.4rem;
  font-size: 0.9rem;
  color: var(--text);
  white-space: nowrap;
}

.board {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: 1rem;
  align-items: flex-start;
}

.board-column {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  min-width: 260px;
  max-width: 260px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 180px);
}

.board-column-change {
  border-right: 3px solid var(--text-muted);
  margin-right: 0.65rem;
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border);
}

.column-header-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.column-header h2 {
  font-size: 0.9rem;
  margin: 0;
}

.column-sort {
  font-size: 0.72rem;
  padding: 0.2rem 0.3rem;
  width: auto;
  max-width: 100px;
}

.column-count {
  background: var(--bg);
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.column-cards {
  flex: 1;
  overflow-y: auto;
  padding: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 40px;
}

.board-card {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
  cursor: grab;
}

.board-card-new {
  padding-bottom: 1.6rem;
}

.new-corner-badge {
  position: absolute;
  bottom: 0.4rem;
  right: 0.5rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--danger-contrast);
  background: var(--danger);
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
}

.board-card:active {
  cursor: grabbing;
}

.card-top {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.35rem;
}

.card-top-actions {
  margin-left: auto;
  display: flex;
  gap: 0.3rem;
}

.card-edit-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  min-height: 30px;
}

.card-title {
  font-weight: 600;
  font-size: 0.9rem;
}

.card-description {
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-top: 0.3rem;
  overflow-wrap: anywhere;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.5rem;
}

.assignee-pill, .due-pill {
  font-size: 0.75rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.assignee-pill-empty {
  opacity: 0.6;
}

.add-item-btn {
  border: none;
  background: none;
  color: var(--text-muted);
  padding: 0.6rem 0.85rem;
  text-align: left;
  cursor: pointer;
  border-top: 1px solid var(--border);
  min-height: 40px;
}

.add-item-btn:hover {
  color: var(--text);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 100;
}

.modal {
  background: var(--surface);
  border-radius: 12px;
  padding: 1.5rem;
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.modal label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex: 1;
}

.modal-row {
  display: flex;
  gap: 0.75rem;
}

.modal-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

.error {
  color: var(--danger);
  min-height: 1.2em;
  font-size: 0.9rem;
}

.centered-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.auth-card form {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.auth-card label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.subtitle {
  color: var(--text-muted);
  margin: 0;
}