:root {
  --color-bg: #fbfaff;
  --color-bg-lavender: #efebfb;
  --color-surface: #ffffff;
  --color-ink: #241b3a;
  --color-ink-soft: #5c5470;
  --color-border: #e3ddf5;
  --color-purple: #7c5cfc;
  --color-magenta: #c750e0;
  --color-blue: #5b7fff;
  --color-danger: #e0507a;
  --color-overdue: #e0507a;
  --gradient-accent: linear-gradient(135deg, var(--color-purple), var(--color-magenta));
  --glow: 0 0 0 1px rgba(124, 92, 252, 0.25), 0 6px 20px rgba(124, 92, 252, 0.28);
  --radius: 14px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-lavender) 100%);
  color: var(--color-ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

button, input, textarea {
  font-family: inherit;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(251, 250, 255, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}

.app-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.search-box input {
  width: 100%;
  max-width: 220px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-ink);
}

.board {
  display: flex;
  gap: 12px;
  padding: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
}

.board-column {
  flex: 0 0 82vw;
  max-width: 340px;
  scroll-snap-align: start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 60vh;
}

.board-column.drag-over {
  box-shadow: var(--glow);
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.column-title {
  font-weight: 700;
  font-size: 15px;
}

.column-count {
  font-size: 12px;
  color: var(--color-ink-soft);
  background: var(--color-bg-lavender);
  border-radius: 999px;
  padding: 2px 8px;
}

.overload-warning {
  font-size: 12px;
  color: var(--color-danger);
  background: rgba(224, 80, 122, 0.08);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
}

.bucket-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-ink-soft);
  margin-top: 6px;
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px;
  cursor: pointer;
}

.card:active {
  transform: scale(0.99);
}

.card:focus-visible {
  outline: 2px solid var(--color-purple);
  outline-offset: 2px;
}

.checklist-item-move {
  border: none;
  background: none;
  color: var(--color-purple);
  cursor: pointer;
  font-size: 14px;
  padding: 0 4px;
}

.checklist-item-move:disabled {
  color: var(--color-border);
  cursor: not-allowed;
}

.card-title {
  font-weight: 600;
  font-size: 14px;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.badge {
  font-size: 11px;
  border-radius: 999px;
  padding: 2px 8px;
  background: var(--color-bg-lavender);
  color: var(--color-ink-soft);
}

.badge-overdue {
  background: rgba(224, 80, 122, 0.12);
  color: var(--color-overdue);
}

.badge-checklist {
  background: rgba(91, 127, 255, 0.12);
  color: var(--color-blue);
}

.card-move-btn {
  margin-top: 8px;
  font-size: 12px;
  border: none;
  background: none;
  color: var(--color-purple);
  padding: 0;
  cursor: pointer;
}

.create-fab {
  position: fixed;
  right: 18px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: var(--gradient-accent);
  color: white;
  font-size: 28px;
  line-height: 1;
  box-shadow: var(--glow);
  cursor: pointer;
  z-index: 10;
}

.sheet {
  position: fixed;
  inset: 0;
  background: rgba(36, 27, 58, 0.35);
  display: flex;
  align-items: flex-end;
  z-index: 20;
}

.sheet[hidden] {
  display: none;
}

.sheet-content {
  background: var(--color-surface);
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  border-radius: 20px 20px 0 0;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sheet-header {
  display: flex;
  justify-content: flex-end;
}

.field-label {
  font-size: 12px;
  color: var(--color-ink-soft);
  margin-top: 8px;
}

input[type="text"],
input[type="search"],
input[type="password"],
input[type="datetime-local"],
textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-ink);
}

.field-row {
  display: flex;
  gap: 8px;
}

.field-col {
  flex: 1;
  min-width: 0;
}

.segmented {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.segmented-option {
  flex: 1;
  padding: 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-ink-soft);
  cursor: pointer;
}

.segmented-option[aria-pressed="true"] {
  background: var(--gradient-accent);
  color: white;
  border-color: transparent;
}

.sheet-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.btn {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
}

.btn-primary {
  background: var(--gradient-accent);
  color: white;
  flex: 1;
}

.btn-glow {
  box-shadow: var(--glow);
}

.btn-secondary {
  background: var(--color-bg-lavender);
  color: var(--color-ink);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink-soft);
  border-color: var(--color-border);
}

.btn-disabled {
  background: var(--color-bg-lavender);
  color: var(--color-ink-soft);
  opacity: 0.7;
  width: 100%;
  margin-top: 6px;
  cursor: not-allowed;
}

.checklist-section,
.move-section,
.ai-preview-section {
  margin-top: 14px;
  border-top: 1px solid var(--color-border);
  padding-top: 10px;
}

.checklist-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.checklist-progress {
  font-size: 12px;
  color: var(--color-ink-soft);
}

.checklist-items {
  list-style: none;
  margin: 8px 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
}

.checklist-item.done .checklist-item-text {
  text-decoration: line-through;
  color: var(--color-ink-soft);
}

.checklist-item-text {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  color: var(--color-ink);
}

.checklist-item-delete {
  border: none;
  background: none;
  color: var(--color-ink-soft);
  cursor: pointer;
  font-size: 16px;
}

.checklist-add-form {
  display: flex;
  gap: 8px;
}

.move-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.move-actions button {
  flex: 1 1 40%;
}

.dev-auth-banner {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  padding: 8px 12px;
  background: #fff3cd;
  color: #6b4e00;
  font-size: 12px;
}

.dev-auth-banner input {
  flex: 1;
  min-width: 120px;
}

.empty-state {
  color: var(--color-ink-soft);
  font-size: 13px;
  text-align: center;
  padding: 12px 0;
}

@media (min-width: 900px) {
  .board-column {
    flex-basis: 300px;
  }
}