/* Paper Route — visual identity.
 *
 * "Modern Sunday": a friendly, clean, contemporary puzzle look. Soft cool
 * paper background, white cards, deep green/teal palette with a coral
 * trail accent; rounded gap-based board cells; slim top bar; board card
 * plus a compact side rail. System typography only — no remote fonts, no
 * images beyond the self-hosted favicon.
 */

:root {
  --bg: #edf1ef;
  --card: #ffffff;
  --ink: #1c2b28;
  --muted: #5f736d;
  --green: #0e5a4e;
  --green-deep: #0b4a40;
  --green-soft: #dcede7;
  --teal: #b9e3d6;
  --coral: #ee6a4d;
  --coral-deep: #d4532f;
  --coral-soft: #fdeae4;
  --building: #12463d;
  --park: #ddeddd;
  --street: #f2f7f5;
  --street-hover: #e5efeb;
  --line: rgba(28, 43, 40, 0.1);
  --radius: 14px;
  --card-shadow: 0 10px 30px rgba(16, 40, 35, 0.08);
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100dvh;
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.5;
}

/* ---------- skip link ---------- */

.skip-link {
  position: absolute;
  left: 0.6rem;
  top: -4rem;
  z-index: 20;
  padding: 0.5rem 1rem;
  background: var(--green);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 10px 10px;
  transition: top 120ms ease-out;
}

.skip-link:focus {
  top: 0;
}

/* ---------- slim top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  max-width: 66rem;
  margin: 0 auto;
  padding: 0.8rem 1.25rem;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 2rem;
  height: 2rem;
  border-radius: 9px;
  background: var(--green);
  font-size: 1.05rem;
}

.wordmark {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.topbar-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
  margin: 0 0 0 auto;
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--muted);
  text-align: right;
}

.topbar-meta b {
  color: var(--green);
  font-weight: 600;
}

/* ---------- layout: board card + compact side rail ---------- */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18.5rem;
  gap: 1.25rem;
  max-width: 66rem;
  margin: 0 auto;
  padding: 0.25rem 1.25rem 2rem;
  align-items: start;
}

/* ---------- board card ---------- */

.board-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
}

.board-frame {
  position: relative;
  width: min(100%, 76dvh, 37rem);
  aspect-ratio: 1;
}

#board {
  display: grid;
  grid-template-columns: repeat(var(--size), 1fr);
  grid-template-rows: repeat(var(--size), 1fr);
  gap: 3px;
  width: 100%;
  height: 100%;
  touch-action: manipulation;
}

#board:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 4px;
  border-radius: 8px;
}

.cell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  border: 0;
  font: inherit;
  min-width: 0;
  min-height: 0;
  border-radius: 5px;
  background: var(--street);
}

button.cell {
  cursor: pointer;
  transition: background 120ms ease-out;
}

button.cell:hover {
  background: var(--street-hover);
}

button.cell:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: -2px;
  z-index: 2;
}

button.cell.visited {
  background: var(--coral-soft);
}

.glyph {
  font-size: clamp(0.7rem, 2.4dvh, 1.1rem);
  line-height: 1;
  pointer-events: none;
}

/* Houses: soft green while waiting, teal once the paper lands. */
.cell.house {
  background: var(--green-soft);
}

.cell.house.visited {
  background: var(--green-soft);
}

.cell.house.delivered {
  background: var(--teal);
}

.cell.house.delivered .glyph::after {
  content: "📰";
  position: absolute;
  right: 4%;
  bottom: 2%;
  font-size: 0.72em;
}

/* Depot */
.cell.depot {
  background: var(--green);
}

.cell.depot .glyph {
  filter: brightness(1.6);
}

/* Obstacles: buildings are solid deep-green blocks, parks stay leafy. */
.cell.building {
  background: var(--building);
}

.cell.park {
  background: var(--park);
}

/* Trail + rider overlays */
#trail {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.trail-line {
  fill: none;
  stroke: var(--coral);
  stroke-width: 0.14;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.9;
}

#rider {
  position: absolute;
  left: 0;
  top: 0;
  width: calc(100% / var(--size));
  height: calc(100% / var(--size));
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 2;
  transition: transform 90ms linear;
}

.rider-glyph {
  font-size: clamp(0.85rem, 3dvh, 1.35rem);
  line-height: 1;
  filter: drop-shadow(0 1px 1px rgba(255, 255, 255, 0.9));
}

#board.done ~ #rider .rider-glyph {
  transform: rotate(-10deg);
}

.board-hint {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
  max-width: 30rem;
}

/* ---------- side rail cards ---------- */

.rail {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
}

.rail-card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 1rem 1.1rem;
}

.rail-heading {
  margin: 0 0 0.15rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.edition-line {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.tagline {
  margin: 0.1rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin: 0.9rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.progress {
  margin-top: 0.45rem;
  height: 7px;
  border-radius: 99px;
  background: var(--green-soft);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 99px;
  background: var(--green);
  transition: width 240ms ease-out;
}

.note {
  margin: 0;
  font-size: 0.78rem;
  color: var(--muted);
}

.note + .note {
  margin-top: 0.3rem;
}

/* ---------- buttons + controls ---------- */

.controls {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.btn {
  display: block;
  width: 100%;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.6rem 1rem;
  border-radius: 99px;
  cursor: pointer;
  text-align: center;
  transition: background 120ms ease-out, color 120ms ease-out,
    border-color 120ms ease-out;
}

.btn-secondary {
  color: var(--green);
  background: var(--card);
  border: 1.5px solid var(--green);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--green-soft);
}

.btn-ghost {
  color: var(--muted);
  background: none;
  border: 1.5px solid transparent;
}

.btn-ghost:hover:not(:disabled) {
  color: var(--green);
  background: var(--green-soft);
}

.btn-primary {
  color: #fff;
  background: var(--green);
  border: 1.5px solid var(--green);
}

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

.btn:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

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

/* ---------- statuses ---------- */

.share-status {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--green);
  text-align: center;
}

.share-status:not(:empty) {
  margin-top: 0.55rem;
}

.share-fallback {
  width: 100%;
  min-height: 6rem;
  margin-top: 0.55rem;
  font: inherit;
  font-size: 0.85rem;
  padding: 0.5rem 0.6rem;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--street);
  color: var(--ink);
}

.share-fallback[hidden] {
  display: none;
}

.new-day {
  background: var(--coral-soft);
  border-color: rgba(238, 106, 77, 0.35);
}

.new-day p {
  margin: 0 0 0.6rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--coral-deep);
}

/* ---------- dialogs ---------- */

.card {
  width: min(92vw, 26rem);
  border: 0;
  border-radius: var(--radius);
  background: var(--card);
  color: var(--ink);
  padding: 1.4rem 1.5rem;
  box-shadow: 0 20px 50px rgba(16, 40, 35, 0.25);
}

.card::backdrop {
  background: rgba(18, 70, 61, 0.4);
}

.card h2 {
  margin: 0 0 0.8rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.help-list {
  margin: 0;
  padding-left: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.done-rating {
  margin: 0 0 0.8rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--coral-deep);
}

.done-stats {
  display: flex;
  gap: 0.6rem;
  margin: 0 0 0.8rem;
}

.done-stat {
  flex: 1;
  text-align: center;
  padding: 0.5rem 0.3rem;
  border-radius: 10px;
  background: var(--green-soft);
}

.done-stat dt {
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.done-stat dd {
  margin: 0.1rem 0 0;
  font-size: 1.45rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.done-note {
  margin: 0 0 0.9rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.done-locked {
  margin: 0 0 0.9rem;
  padding: 0.55rem 0.75rem;
  font-size: 0.82rem;
  background: var(--coral-soft);
  border-radius: 10px;
  color: var(--ink);
}

.dialog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: flex-end;
  margin-top: 1.1rem;
}

.dialog-actions .btn {
  display: inline-block;
  width: auto;
}

/* ---------- route comparison ---------- */

.comparison {
  grid-column: 1 / -1;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  padding: 1.1rem 1.25rem 1.25rem;
}

.comparison-title {
  margin: 0 0 0.8rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.compare-map {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.compare-caption {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
}

.compare-score {
  margin-left: auto;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-transform: none;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.compare-svg {
  width: 100%;
  aspect-ratio: 1;
  display: block;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
}

/* Mini-map cells reuse the board's visual language. */
.cmp-street {
  fill: var(--street);
}

.cmp-building {
  fill: var(--building);
}

.cmp-park {
  fill: var(--park);
}

.cmp-house {
  fill: var(--green-soft);
}

.cmp-house.cmp-delivered {
  fill: var(--teal);
}

.cmp-depot {
  fill: var(--green);
}

.cmp-glyph {
  font-size: 0.62px;
  text-anchor: middle;
  pointer-events: none;
}

.cmp-trail {
  fill: none;
  stroke-width: 0.18;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.9;
}

.cmp-trail-player {
  stroke: var(--coral);
}

.cmp-trail-perfect {
  stroke: var(--green);
  stroke-dasharray: 0.3 0.22;
}

.cmp-marker {
  stroke: #fff;
  stroke-width: 0.07;
}

.cmp-marker-start {
  fill: var(--ink);
}

.cmp-marker-end {
  fill: var(--coral-deep);
}

.cmp-marker-text {
  font-family: var(--sans);
  font-size: 0.46px;
  font-weight: 700;
  fill: #fff;
  text-anchor: middle;
}

.compare-legend {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  margin: 0.9rem 0 0;
  padding: 0;
  font-size: 0.78rem;
  color: var(--muted);
}

.compare-legend li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-line {
  display: inline-block;
  width: 1.6rem;
  border-top: 3px solid var(--coral);
}

.legend-line-perfect {
  border-top-style: dashed;
  border-top-color: var(--green);
}

.legend-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
}

.legend-mark-end {
  background: var(--coral-deep);
}

.legend-cell {
  display: inline-block;
  width: 0.85rem;
  height: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 4px;
}

.legend-cell-house {
  background: var(--green-soft);
}

.legend-cell-block {
  background: var(--building);
}

.compare-note {
  margin: 0.7rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ---------- footer ---------- */

.colophon {
  max-width: 66rem;
  margin: 0 auto;
  padding: 0 1.25rem 1.6rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
}

.colophon p {
  margin: 0.15rem 0;
}

/* ---------- utilities ---------- */

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- mobile: rail stacks under the board card ---------- */

@media (max-width: 52rem) {
  .layout {
    grid-template-columns: 1fr;
    padding: 0 0.8rem 1.6rem;
    gap: 0.8rem;
  }

  .topbar {
    padding: 0.7rem 0.9rem;
  }

  .topbar-meta {
    font-size: 0.74rem;
  }

  .rail {
    gap: 0.8rem;
  }

  .board-card {
    padding: 0.7rem;
  }

  .rail-card.controls-card .controls {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .rail-card.controls-card .btn {
    width: auto;
    flex: 1 1 8rem;
  }

  .colophon {
    padding: 0 0.9rem 1.4rem;
  }
}

/* Stack the comparison maps once two columns would get cramped. */
@media (max-width: 32rem) {
  .compare-grid {
    grid-template-columns: 1fr;
  }

  .comparison {
    padding: 0.9rem 0.9rem 1rem;
  }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}