/* ─── Reset & tokens ─────────────────────────────────────────── */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --card-font-size:  14px;

  --priority-none:   #c0bcb4;
  --priority-green:  #a1c597;
  --priority-yellow: #dbc56d;
  --priority-red:    #d6a49b;

  --board-bg:        #f0ede8;
  --column-bg:       #e8e4de;
  --card-bg:         #faf8f5;
  --card-shadow:     rgba(0, 0, 0, 0.08);
  --card-shadow-hover: rgba(0, 0, 0, 0.22);

  --text-primary:    #2c2825;
  --text-secondary:  #7a746e;
  --text-muted:      #6b645c;
  --accent:          #c4a882;

  --deadline-none:   #7a746e;
  --deadline-soon:   #a03030;
  --deadline-over:   #a03030;

  --col-todo:        #9db5c8;
  --col-doing:       #c8a96e;
  --col-waiting:     #9db5a0;
  --col-done:        #b0b0b0;

  --radius-card:     7px;
  --radius-col:      10px;
  --font: system-ui, -apple-system, 'Segoe UI', sans-serif;
}

/* ─── Base ───────────────────────────────────────────────────── */

html, body {
  height: 100%;
}

body {
  background: var(--board-bg);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.45;
  overflow-x: hidden;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
}

/* ─── Board header ───────────────────────────────────────────── */

.board-header {
  padding: 20px 24px 8px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.board-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: lowercase;
  color: var(--text-secondary);
  user-select: none;
}

.font-controls {
  display: flex;
  gap: 4px;
}

.font-btn {
  background: none;
  border: 1px solid var(--text-muted);
  border-radius: 5px;
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 7px;
  line-height: 1.4;
  opacity: 0.6;
  transition: opacity 0.1s, border-color 0.1s;
}

.font-btn:hover {
  opacity: 1;
  border-color: var(--text-secondary);
}

/* ─── Help modal ─────────────────────────────────────────────── */

.help-overlay {
  position: fixed;
  inset: 0;
  background: rgba(44, 40, 37, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.help-overlay[hidden] {
  display: none;
}

.help-modal {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 28px 32px 24px;
  max-width: 380px;
  width: 90%;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  position: relative;
}

.help-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: lowercase;
  color: var(--text-secondary);
  margin-bottom: 16px;
  user-select: none;
}

.help-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.help-list li {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.45;
  padding-left: 14px;
  position: relative;
}

.help-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.help-list strong {
  color: var(--text-primary);
  font-weight: 600;
}

.help-close {
  position: absolute;
  top: 12px;
  right: 14px;
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--text-muted);
  line-height: 1;
  padding: 2px 4px;
  transition: color 0.1s;
}

.help-close:hover {
  color: var(--text-primary);
}

.help-list kbd {
  font-family: var(--font);
  font-size: 0.72rem;
  background: var(--column-bg);
  border: 1px solid var(--text-muted);
  border-radius: 3px;
  padding: 1px 4px;
  color: var(--text-primary);
}

/* ─── Board grid ─────────────────────────────────────────────── */

.board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 12px 24px 120px;
  align-items: start;
  min-width: 0;
}

/* ─── Column ─────────────────────────────────────────────────── */

.column {
  background: var(--column-bg);
  border-radius: var(--radius-col);
  padding: 12px 10px 10px;
  min-height: 120px;
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  padding: 0 2px;
}

.done-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.archive-all-btn {
  background: none;
  border: none;
  font-family: var(--font);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  cursor: pointer;
  padding: 1px 4px;
  border-radius: 3px;
  transition: color 0.1s, background 0.1s;
  text-transform: lowercase;
}

.archive-all-btn:hover {
  color: var(--text-primary);
  background: rgba(0,0,0,0.06);
}

.column-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  user-select: none;
}

/* colored dot before each column title */
.column[data-column="todo"]    .column-title::before { content: "• "; color: var(--col-todo);    font-size: 1.1rem; }
.column[data-column="doing"]   .column-title::before { content: "• "; color: var(--col-doing);   font-size: 1.1rem; }
.column[data-column="waiting"] .column-title::before { content: "• "; color: var(--col-waiting); font-size: 1.1rem; }
.column[data-column="done"]    .column-title::before { content: "• "; color: var(--col-done);    font-size: 1.1rem; }

.card-count {
  font-size: 0.68rem;
  font-weight: 400;
  color: var(--text-muted);
  background: rgba(63, 63, 63, 0.05);
  border-radius: 99px;
  padding: 1px 7px;
  font-variant-numeric: tabular-nums;
  user-select: none;
}

/* ─── Card list (drop zone) ──────────────────────────────────── */

.card-list {
  min-height: 40px;
  border-radius: 6px;
  transition: background 0.12s, outline 0.12s;
}

.card-list.drag-over {
  background: rgba(0, 0, 0, 0.14);
  outline: 2px dashed var(--accent);
  outline-offset: -3px;
}

/* ─── Card ───────────────────────────────────────────────────── */

.card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  margin-bottom: 8px;
  box-shadow: 0 1px 3px var(--card-shadow), 0 1px 2px var(--card-shadow);
  overflow: hidden;
  transition: box-shadow 0.14s ease, opacity 0.1s;
  position: relative;
}

.card:hover,
.card.is-chip-highlighted {
  box-shadow: 0 6px 20px var(--card-shadow-hover);
  transform: translateY(-1px);
}

@keyframes chip-pulse {
  0%   { box-shadow: 0 6px 20px var(--card-shadow-hover); }
  35%  { box-shadow: 0 0 0 4px rgba(0,0,0,0.85); }
  100% { box-shadow: 0 6px 20px var(--card-shadow-hover); }
}

.card.is-chip-pulse {
  animation: chip-pulse 0.9s ease;
}

.card.is-dragging {
  opacity: 0.45;
  box-shadow: 0 8px 24px rgba(0,0,0,0.16);
}

/* ─── Drag bar (pure handle — no editable content) ──────────── */

.card-drag-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px 4px 10px;
  background: var(--priority-none);
  cursor: grab;
  user-select: none;
  transition: background 0.15s ease;
}

.card-drag-bar[data-priority="none"]   { background: var(--priority-none); }
.card-drag-bar[data-priority="green"]  { background: var(--priority-green); }
.card-drag-bar[data-priority="yellow"] { background: var(--priority-yellow); }
.card-drag-bar[data-priority="red"]    { background: var(--priority-red); }

.card-drag-bar:active {
  cursor: grabbing;
}

.card-grip {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 1px;
  pointer-events: none;
}

/* ─── Card body ──────────────────────────────────────────────── */

.card-body {
  padding: 10px 12px 10px;
  font-size: var(--card-font-size);
}

.card-title {
  font-size: calc(var(--card-font-size) * 1.1);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
  word-break: break-word;
  margin-bottom: 8px;
}

/* placeholder slot during drag */
.card-placeholder {
  height: 58px;
  background: rgba(196, 168, 130, 0.1);
  border: 2px dashed var(--accent);
  border-radius: var(--radius-card);
  margin-bottom: 8px;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
  transition: opacity 0.1s;
}

.card:hover .card-actions {
  opacity: 1;
}

.archive-card-btn,
.delete-card-btn {
  background: none;
  border: none;
  color: rgba(255,255,255,0.7);
  font-size: 1.5rem;
  line-height: 1;
  padding: 0 4px;
  transition: color 0.1s;
  flex-shrink: 0;
}

.archive-card-btn:hover,
.delete-card-btn:hover {
  color: rgba(255,255,255,1);
}

/* ─── Deadline ───────────────────────────────────────────────── */

.card-deadline {
  margin-bottom: 7px;
}

.deadline-input {
  font-family: var(--font);
  font-size: var(--card-font-size);
  border: none;
  background: none;
  padding: 0;
  cursor: pointer;
  color: var(--deadline-none);
  outline: none;
  width: auto;
}

.deadline-input::-webkit-calendar-picker-indicator {
  opacity: 0.4;
  cursor: pointer;
  padding: 0;
  margin-left: 2px;
}

.card-deadline[data-urgency="none"]    .deadline-input { color: var(--deadline-none); }
.card-deadline[data-urgency="soon"]    .deadline-input { color: var(--deadline-soon); font-weight: 600; }
.card-deadline[data-urgency="overdue"] .deadline-input { color: var(--deadline-over); font-weight: 600; text-decoration: line-through; }

.deadline-day {
  font-size: var(--card-font-size);
  color: var(--deadline-none);
  margin-left: 4px;
  user-select: none;
}

.card-deadline[data-urgency="none"]    .deadline-day { color: var(--deadline-none); }
.card-deadline[data-urgency="soon"]    .deadline-day { color: var(--deadline-soon); font-weight: 600; }
.card-deadline[data-urgency="overdue"] .deadline-day { color: var(--deadline-over); font-weight: 600; text-decoration: line-through; }

/* ─── Checklist ──────────────────────────────────────────────── */

.checklist {
  list-style: none;
  margin-bottom: 4px;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 3px;
  font-size: var(--card-font-size);
  color: var(--text-secondary);
}

.step-check {
  flex-shrink: 0;
  accent-color: var(--accent);
  cursor: pointer;
  width: 13px;
  height: 13px;
}

.step-text {
  flex: 1;
  word-break: break-word;
  line-height: 1.35;
}

.step-check:checked ~ .step-text {
  text-decoration: line-through;
  opacity: 0.5;
}

.remove-step-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1;
  padding: 0 2px;
  opacity: 0;
  transition: opacity 0.1s, color 0.1s;
  flex-shrink: 0;
}

.checklist-item:hover .remove-step-btn {
  opacity: 1;
}

.remove-step-btn:hover {
  color: var(--deadline-over);
}

/* ─── Add step button ────────────────────────────────────────── */

.add-step-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.72rem;
  padding: 2px 0;
  display: block;
  opacity: 0.7;
  transition: opacity 0.1s, color 0.1s;
}

.add-step-btn:hover {
  opacity: 1;
  color: var(--text-secondary);
}

/* ─── Add card button ────────────────────────────────────────── */

.add-card-btn {
  display: block;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  color: var(--text-muted);
  font-size: 0.78rem;
  padding: 6px 4px 2px;
  opacity: 0.7;
  transition: opacity 0.1s, color 0.1s;
}

.add-card-btn:hover {
  opacity: 1;
  color: var(--text-secondary);
}

/* ─── contenteditable ────────────────────────────────────────── */

[contenteditable="true"] {
  cursor: text;
  border-radius: 3px;
  transition: background 0.1s;
  -webkit-user-modify: read-write-plaintext-only; /* Chrome: plain text only */
}

[contenteditable="true"]:focus {
  outline: none;
  border-bottom: 1.5px solid var(--accent);
  padding-bottom: 1px;
}

[contenteditable="true"]:empty::before {
  content: attr(data-placeholder);
  color: var(--text-muted);
  pointer-events: none;
}

/* ─── Step drag handle ───────────────────────────────────────── */

.step-handle {
  flex-shrink: 0;
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1;
  cursor: grab;
  opacity: 0;
  transition: opacity 0.1s;
  user-select: none;
  padding: 0 1px;
  min-width: 12px;
  text-align: center;
}

.checklist-item:hover .step-handle {
  opacity: 1;
}

.step-handle:active {
  cursor: grabbing;
}

.checklist-item.is-step-dragging {
  opacity: 0.35;
}

.step-placeholder {
  height: 22px;
  background: rgba(196, 168, 130, 0.1);
  border: 1.5px dashed var(--accent);
  border-radius: 4px;
  margin-bottom: 3px;
  list-style: none;
}

.checklist.step-drag-over {
  background: rgba(196, 168, 130, 0.07);
  border-radius: 4px;
  outline: 1.5px dashed var(--accent);
  outline-offset: 2px;
}

/* ─── Upcoming bar ───────────────────────────────────────────── */

.upcoming-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--column-bg);
  border-top: 1px solid rgba(0,0,0,0.08);
  transition: height 0.25s ease;
  height: 34px;
  overflow: hidden;
}

.upcoming-bar.is-open {
  height: 80px;
}

.upcoming-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  height: 34px;
  padding: 0 20px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.72rem;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  user-select: none;
}

.upcoming-toggle:hover {
  color: var(--text-primary);
}

.upcoming-chevron {
  transition: transform 0.2s ease;
  display: inline-block;
}

.upcoming-bar.is-open .upcoming-chevron {
  transform: rotate(180deg);
}

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

.upcoming-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 20px 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.upcoming-strip::-webkit-scrollbar { display: none; }

.upcoming-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--priority-none);
  border-radius: 5px;
  padding: 5px 10px;
  white-space: nowrap;
  font-size: 0.78rem;
  color: #2c2825;
  box-shadow: 0 1px 3px var(--card-shadow);
  flex-shrink: 0;
  cursor: pointer;
  user-select: none;
}

.upcoming-chip[data-priority="none"]   { background: var(--priority-none); }
.upcoming-chip[data-priority="green"]  { background: var(--priority-green); }
.upcoming-chip[data-priority="yellow"] { background: var(--priority-yellow); }
.upcoming-chip[data-priority="red"]    { background: var(--priority-red); }

.chip-title {
  font-weight: 500;
  color: #2c2825;
}

.chip-date {
  color: #2c2825;
  font-size: 0.72rem;
  opacity: 0.6;
}