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

:root {
  --bg: #121213;
  --surface: #1e1e20;
  --surface-hover: #2a2a2d;
  --border: #3a3a3c;
  --text: #d7dadc;
  --text-muted: #818384;
  --correct: #538d4e;
  --correct-bg: rgba(83, 141, 78, 0.15);
  --incorrect: #c9444d;
  --incorrect-bg: rgba(201, 68, 77, 0.1);
  --accent: #e2a829;
  --accent-bg: rgba(226, 168, 41, 0.12);
  --primary: #4a90d9;
  --primary-hover: #5ba0e9;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
  --tl-width: 3px;
  --tl-left: 28px;
  --tl-dot: 13px;
}

html {
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  line-height: 1.5;
}

#app {
  max-width: 560px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 24px;
}

header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.rabbit-icon {
  width: 32px;
  height: 32px;
  opacity: 0.35;
  transition: opacity 0.4s;
  vertical-align: middle;
}

.rabbit-icon:hover {
  opacity: 0.8;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.tagline {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 6px;
}

.tagline strong {
  color: var(--text);
}

/* Mode selector */
#mode-selector {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 4px 0 12px;
  margin-bottom: 4px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
}

#mode-selector::-webkit-scrollbar {
  display: none;
}

.mode-pill {
  flex-shrink: 0;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.mode-pill:hover {
  background: var(--surface-hover);
  color: var(--text);
  border-color: #4a4a4e;
}

.mode-pill.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Loading */
#loading {
  text-align: center;
  padding: 60px 0;
  color: var(--text-muted);
  font-size: 1rem;
}

/* Score panel */
#score-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 16px;
  text-align: center;
}

#score-current {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

#score-current strong {
  color: var(--accent);
  font-size: 1.1rem;
}

#hint-penalty-display {
  color: var(--incorrect);
  font-size: 0.8rem;
  margin-left: 4px;
}

#score-scale {
  display: flex;
  justify-content: center;
  gap: 2px;
  flex-wrap: wrap;
}

.scale-tier {
  font-size: 0.7rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  padding: 3px 6px;
  border-radius: 4px;
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  transition: all 0.2s;
}

.scale-tier.active {
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid rgba(226, 168, 41, 0.3);
}

#score-scale-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 6px;
  letter-spacing: 0.05em;
  opacity: 0.6;
}

/* ===== Timeline wrapper ===== */
.timeline-wrapper {
  position: relative;
  padding-left: 0;
}

/* Top/bottom caps */
.timeline-cap {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: calc(var(--tl-left) - var(--tl-dot) / 2);
}

.timeline-cap-start {
  margin-bottom: 4px;
}

.timeline-cap-end {
  margin-top: 4px;
}

.timeline-cap-dot {
  width: var(--tl-dot);
  height: var(--tl-dot);
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--text-muted);
  flex-shrink: 0;
}

.timeline-cap-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.timeline-cap-start .timeline-cap-dot {
  background: var(--surface);
  border-color: var(--accent);
}

.timeline-cap-end .timeline-cap-dot {
  background: var(--surface);
  border-color: var(--primary);
}

/* The vertical line */
.timeline-track {
  position: relative;
  padding-left: calc(var(--tl-left) + var(--tl-width) / 2 + 16px);
}

.timeline-track::before {
  content: '';
  position: absolute;
  left: calc(var(--tl-left) + var(--tl-width) / 2 - var(--tl-width) / 2);
  top: 0;
  bottom: 0;
  width: var(--tl-width);
  background: linear-gradient(to bottom, var(--accent), var(--border) 20%, var(--border) 80%, var(--primary));
  border-radius: 2px;
}

/* ===== Event list (game) ===== */
#event-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 100px;
  padding: 8px 0;
}

/* Event card (game) */
.event-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 14px 14px 12px;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.2s ease;
  position: relative;
  touch-action: none;
}

/* Timeline dot on each card */
.event-card::before {
  content: '';
  position: absolute;
  left: calc(-16px - var(--tl-width) / 2 - var(--tl-dot) / 2 + var(--tl-width) / 2);
  top: 50%;
  transform: translateY(-50%);
  width: var(--tl-dot);
  height: var(--tl-dot);
  border-radius: 50%;
  background: var(--surface);
  border: var(--tl-width) solid var(--text-muted);
  z-index: 1;
  transition: border-color 0.2s, background 0.2s;
}

/* Connector from dot to card */
.event-card::after {
  content: '';
  position: absolute;
  left: calc(-16px + var(--tl-dot) / 2 - var(--tl-width) / 2);
  top: 50%;
  width: calc(16px - var(--tl-dot) / 2 + var(--tl-width) / 2);
  height: 2px;
  background: var(--border);
  transform: translateY(-50%);
}

.event-card:hover {
  background: var(--surface-hover);
  border-color: #4a4a4e;
}

.event-card:hover::before {
  border-color: var(--primary);
}

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

.event-card.dragging {
  opacity: 0.4;
  transform: scale(0.98);
}

.event-card.drag-over-above {
  border-top: 2px solid var(--primary);
  margin-top: -1px;
}

.event-card.drag-over-below {
  border-bottom: 2px solid var(--primary);
  margin-bottom: -1px;
}

.event-card.just-added {
  animation: slideIn 0.3s ease-out;
  border-color: var(--accent);
}

.event-card.just-added::before {
  border-color: var(--accent);
  background: var(--accent-bg);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.card-grip {
  color: var(--text-muted);
  font-size: 1rem;
  flex-shrink: 0;
  line-height: 1;
}

.card-number {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-muted);
  min-width: 18px;
  text-align: center;
  flex-shrink: 0;
}

.card-body {
  flex: 1;
  min-width: 0;
}

.card-event-name {
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.3;
}

.card-hints-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.hint-btn {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  font-family: inherit;
  white-space: nowrap;
}

.hint-btn:hover {
  background: var(--accent-bg);
  color: var(--accent);
  border-color: var(--accent);
}

.hint-cost {
  opacity: 0.7;
  font-weight: 400;
  margin-left: 2px;
}

.hint-revealed {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
}

.hint-cat-value {
  color: var(--accent);
  background: var(--accent-bg);
}

.hint-dec-value {
  color: var(--primary);
  background: rgba(74, 144, 217, 0.12);
}


/* Touch drag ghost */
.drag-ghost {
  position: fixed;
  z-index: 1000;
  pointer-events: none;
  opacity: 0.9;
  transform: scale(1.03);
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  border-color: var(--primary) !important;
  background: var(--surface) !important;
}

/* ===== Controls ===== */
#controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 24px;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease, opacity 0.15s ease;
  font-family: inherit;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn-secondary {
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid rgba(226, 168, 41, 0.25);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(226, 168, 41, 0.2);
}

#draw-controls {
  display: flex;
  gap: 8px;
}

#draw-controls .btn {
  flex: 1;
}

.btn-danger {
  background: var(--incorrect-bg);
  color: var(--incorrect);
  border: 1px solid rgba(201, 68, 77, 0.25);
}

.btn-danger:hover:not(:disabled) {
  background: rgba(201, 68, 77, 0.2);
}

#remaining-count {
  font-weight: 400;
  opacity: 0.8;
}

/* ===== Results ===== */
#results-header {
  text-align: center;
  margin-bottom: 24px;
}

#results-title {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

#results-score {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

#results-breakdown {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

#results-emoji {
  font-size: 1.6rem;
  letter-spacing: 4px;
  margin-bottom: 8px;
}

/* Results timeline cards */
#correct-order {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 4px 0;
}

#correct-order h3 {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.result-card {
  display: flex;
  align-items: stretch;
  gap: 0;
  padding: 0;
  position: relative;
  min-height: 64px;
}

/* Year column on the left */
.result-year {
  width: 52px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 12px;
  font-size: 0.8rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

/* Timeline node (dot) */
.result-node {
  position: relative;
  width: var(--tl-dot);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.result-node::before {
  content: '';
  width: var(--tl-dot);
  height: var(--tl-dot);
  border-radius: 50%;
  border: var(--tl-width) solid var(--text-muted);
  background: var(--surface);
  flex-shrink: 0;
}

/* Connector line between nodes */
.result-card:not(:last-child) .result-node::after {
  content: '';
  position: absolute;
  top: calc(50% + var(--tl-dot) / 2);
  left: 50%;
  transform: translateX(-50%);
  width: var(--tl-width);
  height: calc(100% - var(--tl-dot) / 2);
  background: var(--border);
}

.result-card:not(:first-child) .result-node-top-line {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: var(--tl-width);
  height: calc(50% - var(--tl-dot) / 2);
  background: var(--border);
}

/* Result content */
.result-content {
  flex: 1;
  padding: 8px 0 8px 14px;
  border-left: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.result-info {
  flex: 1;
}

.result-event-name {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 1px;
  line-height: 1.3;
}

.result-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.result-position {
  font-size: 0.7rem;
  font-weight: 500;
  margin-top: 1px;
}

.result-points {
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
  min-width: 32px;
  text-align: right;
  padding-right: 4px;
}

/* Result states */
.result-card.correct .result-node::before {
  border-color: var(--correct);
  background: var(--correct);
}

.result-card.correct .result-event-name {
  color: var(--text);
}

.result-card.correct .result-year {
  color: var(--correct);
}

.result-card.correct .result-points {
  color: var(--correct);
}

.result-card.close .result-node::before {
  border-color: var(--accent);
  background: var(--accent);
}

.result-card.close .result-year {
  color: var(--accent);
}

.result-card.close .result-position {
  color: var(--accent);
}

.result-card.close .result-points {
  color: var(--accent);
}

.result-card.incorrect .result-node::before {
  border-color: var(--incorrect);
  background: var(--incorrect);
}

.result-card.incorrect .result-year {
  color: var(--incorrect);
}

.result-card.incorrect .result-position {
  color: var(--incorrect);
}

.result-card.incorrect .result-points {
  color: var(--incorrect);
}

/* Result card hover highlight */
.result-content-inner {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 10px 14px;
  border: 1px solid transparent;
}

.result-card.correct .result-content-inner {
  background: var(--correct-bg);
  border-color: rgba(83, 141, 78, 0.2);
}

.result-card.close .result-content-inner {
  background: var(--accent-bg);
  border-color: rgba(226, 168, 41, 0.2);
}

.result-card.incorrect .result-content-inner {
  background: var(--incorrect-bg);
  border-color: rgba(201, 68, 77, 0.15);
}

#results-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  margin-top: 20px;
}

#copied-msg {
  color: var(--correct);
  font-size: 0.9rem;
  font-weight: 500;
}

/* ===== How to play ===== */
#how-to-play {
  margin-top: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

#how-to-play summary {
  padding: 12px 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-muted);
  background: var(--surface);
  transition: color 0.15s;
}

#how-to-play summary:hover {
  color: var(--text);
}

.help-content {
  padding: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.help-content p {
  margin-bottom: 10px;
}

.help-content p:last-child {
  margin-bottom: 0;
}

.help-content strong {
  color: var(--text);
}

.scoring-table {
  width: 100%;
  margin: 8px 0 12px;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.scoring-table td {
  padding: 5px 8px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.scoring-table tr:last-child td {
  border-bottom: none;
}

.scoring-table td:last-child {
  text-align: right;
  white-space: nowrap;
}

.example-table {
  margin-top: 6px;
}

.example-header td {
  font-weight: 700;
  color: var(--text);
  font-size: 0.75rem;
  padding-bottom: 3px;
}

.example-good td:last-child {
  color: var(--correct);
}

.example-bad td:last-child {
  color: var(--incorrect);
}

.help-content ul {
  margin: 4px 0 10px 20px;
}

.help-content li {
  margin-bottom: 4px;
}

.btn-disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* ===== Utility ===== */
.hidden {
  display: none !important;
}

/* ===== Responsive ===== */
@media (max-width: 400px) {
  :root {
    --tl-left: 20px;
    --tl-dot: 11px;
  }

  #app {
    padding: 16px 12px 32px;
  }

  header h1 {
    font-size: 1.5rem;
  }

  .event-card {
    padding: 12px 10px 12px 10px;
    gap: 8px;
  }

  .result-year {
    width: 40px;
    font-size: 0.7rem;
  }

  #score-preview {
    flex-direction: column;
    gap: 4px;
    text-align: center;
  }
}