/* Med Connections — editorial puzzle aesthetic */

:root {
  --bg: #faf9f6;
  --bg-elevated: #ffffff;
  --ink: #1a1a1a;
  --ink-muted: #5c5c5c;
  --ink-faint: #8a8a8a;
  --border: #d9d6ce;
  --border-strong: #1a1a1a;
  --tile: #efeee9;
  --tile-hover: #e4e2da;
  --tile-selected: #1a1a1a;
  --tile-selected-text: #faf9f6;
  --danger: #b33a3a;
  --focus: #2a5f8f;

  /* Category difficulty — original palette, not NYT */
  --diff-1: #e8c547;
  --diff-1-text: #2a2408;
  --diff-2: #6baf8d;
  --diff-2-text: #0f2a1c;
  --diff-3: #6b8fc7;
  --diff-3-text: #101828;
  --diff-4: #b87a9e;
  --diff-4-text: #2a1420;

  --radius-tile: 10px;
  --radius-btn: 999px;
  --max-width: 640px;
  --font-ui: "Libre Franklin", system-ui, sans-serif;
  --font-display: "Newsreader", Georgia, serif;
  --shadow-modal: 0 16px 48px rgba(0, 0, 0, 0.18);
  --transition: 160ms ease;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.45;
  color: var(--ink);
  background:
    radial-gradient(ellipse 120% 80% at 50% -20%, #f3efe4 0%, transparent 55%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: #fff;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* Header */

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
}

.brand-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.55rem, 4vw, 1.9rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.brand-subtitle {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  color: var(--ink-muted);
  font-weight: 400;
}

.icon-btn {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-elevated);
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  line-height: 1;
  transition: background var(--transition), border-color var(--transition);
}

.icon-btn:hover {
  background: var(--tile);
  border-color: var(--ink-faint);
}

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

/* Main */

.main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 1.25rem 3rem;
}

.puzzle-toolbar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.5rem;
}

.today-jump {
  margin: 0;
  font-size: 0.82rem;
}

.today-jump.hidden {
  display: none;
}

.puzzle-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-btn {
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-elevated);
  color: var(--ink);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition);
}

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

.nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.nav-btn:focus-visible,
.puzzle-label:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.puzzle-label {
  border: none;
  background: transparent;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  border-radius: 6px;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 3px;
  transition: text-decoration-color var(--transition);
}

.puzzle-label:hover {
  text-decoration-color: var(--ink);
}

.status-bar {
  min-height: 1.75rem;
  text-align: center;
  margin-bottom: 0.75rem;
}

.status-message {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-muted);
  transition: color var(--transition);
}

.status-message.is-error {
  color: var(--danger);
  animation: shake 0.4s ease;
}

.status-message.is-success {
  color: #2d6a4f;
}

.status-message.is-one-away {
  color: var(--ink);
}

/* Board */

.board-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.solved-area {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.solved-block {
  border-radius: var(--radius-tile);
  padding: 0.85rem 1rem;
  text-align: center;
  animation: solveIn 0.35s ease;
}

.solved-block.diff-1 { background: var(--diff-1); color: var(--diff-1-text); }
.solved-block.diff-2 { background: var(--diff-2); color: var(--diff-2-text); }
.solved-block.diff-3 { background: var(--diff-3); color: var(--diff-3-text); }
.solved-block.diff-4 { background: var(--diff-4); color: var(--diff-4-text); }

.solved-category {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.solved-terms {
  margin: 0.2rem 0 0;
  font-size: clamp(0.78rem, 2.4vw, 0.95rem);
  font-weight: 500;
  line-height: 1.35;
}

.solved-explanation {
  margin: 0.35rem 0 0;
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.85;
}

.tile-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.tile {
  appearance: none;
  border: none;
  margin: 0;
  min-height: 4.5rem;
  padding: 0.45rem 0.35rem;
  border-radius: var(--radius-tile);
  background: var(--tile);
  color: var(--ink);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: clamp(0.62rem, 2.1vw, 0.88rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  word-break: break-word;
  hyphens: auto;
  overflow: hidden;
  transition:
    background var(--transition),
    color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.tile:hover:not(:disabled):not(.is-selected) {
  background: var(--tile-hover);
}

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

.tile.is-selected {
  background: var(--tile-selected);
  color: var(--tile-selected-text);
  transform: scale(0.97);
}

.tile.is-shake {
  animation: shake 0.45s ease;
}

.tile.is-pop {
  animation: pop 0.28s ease;
}

.tile:disabled {
  cursor: default;
}

/* Mistakes */

.mistakes {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  margin: 1.25rem 0 1rem;
  min-height: 1.5rem;
}

.mistakes-label {
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.mistake-dots {
  display: flex;
  gap: 0.4rem;
}

.mistake-dot {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--ink);
  transition: opacity var(--transition), transform var(--transition);
}

.mistake-dot.is-used {
  opacity: 0.18;
  transform: scale(0.85);
}

/* Controls */

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}

.btn {
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-btn);
  border: 1.5px solid var(--border-strong);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), opacity var(--transition);
  min-height: 2.75rem;
}

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

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

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

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

.btn-primary:hover:not(:disabled) {
  background: #333;
}

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

.btn-danger:hover {
  filter: brightness(0.95);
}

.text-btn {
  border: none;
  background: none;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--ink-faint);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  padding: 0.5rem;
}

.text-btn:hover {
  color: var(--ink-muted);
}

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

/* Results (modal) */

.modal-panel--results {
  width: min(100%, 400px);
  text-align: center;
}

.modal-panel--results .modal-header {
  justify-content: center;
  position: relative;
  margin-bottom: 0.35rem;
}

.modal-panel--results .modal-header .icon-btn {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

.results-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 600;
  width: 100%;
  text-align: center;
}

.results-subtitle {
  margin: 0.15rem 0 1.15rem;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.results-grid {
  display: inline-grid;
  gap: 0.25rem;
  margin-bottom: 1.35rem;
  justify-items: center;
}

.result-row {
  display: flex;
  gap: 0.25rem;
}

.result-sq {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 3px;
}

.result-sq.diff-1 { background: var(--diff-1); }
.result-sq.diff-2 { background: var(--diff-2); }
.result-sq.diff-3 { background: var(--diff-3); }
.result-sq.diff-4 { background: var(--diff-4); }

.results-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}

.modal.hidden {
  display: none;
}

.hidden {
  display: none !important;
}

.site-footer {
  margin-top: 2.5rem;
  text-align: center;
}

/* Modals */

.modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 26, 26, 0.45);
}

.modal-panel {
  position: relative;
  width: min(100%, 420px);
  max-height: min(88dvh, 640px);
  overflow: auto;
  background: var(--bg-elevated);
  border-radius: 14px;
  box-shadow: var(--shadow-modal);
  padding: 1.25rem;
  animation: fadeUp 0.22s ease;
}

.modal-panel--narrow {
  width: min(100%, 380px);
}

.modal-panel--wide {
  width: min(100%, 520px);
}

.archive-intro {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.archive-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-height: min(50dvh, 360px);
  overflow: auto;
  padding-right: 0.15rem;
}

.archive-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  transition: background var(--transition), border-color var(--transition);
}

.archive-item:hover:not(:disabled) {
  background: var(--tile);
  border-color: var(--ink-faint);
}

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

.archive-item.is-current {
  border-color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--ink);
}

.archive-item.is-won {
  background: color-mix(in srgb, var(--diff-2) 28%, white);
  border-color: var(--diff-2);
}

.archive-item.is-lost {
  background: color-mix(in srgb, var(--diff-4) 24%, white);
  border-color: var(--diff-4);
}

.archive-item.is-locked,
.archive-item:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.archive-item-date {
  font-weight: 600;
}

.archive-item-badge {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-muted);
  white-space: nowrap;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.modal-header h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
}

.puzzle-picker {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.45rem;
}

.picker-btn {
  aspect-ratio: 1;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}

.picker-btn:hover {
  border-color: var(--ink-faint);
  background: var(--tile);
}

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

.picker-btn.is-current {
  border-color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--ink);
}

.picker-btn.is-won {
  background: color-mix(in srgb, var(--diff-2) 35%, white);
  border-color: var(--diff-2);
}

.picker-btn.is-lost {
  background: color-mix(in srgb, var(--diff-4) 30%, white);
  border-color: var(--diff-4);
}

.picker-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin: 1rem 0 0;
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-swatch {
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 3px;
  border: 1.5px solid var(--border);
  background: var(--bg);
}

.legend-swatch.current {
  border-color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--ink);
}

.legend-swatch.won {
  background: color-mix(in srgb, var(--diff-2) 35%, white);
  border-color: var(--diff-2);
}

.legend-swatch.lost {
  background: color-mix(in srgb, var(--diff-4) 30%, white);
  border-color: var(--diff-4);
}

.legend-swatch.locked {
  opacity: 0.45;
  background: repeating-linear-gradient(
    -45deg,
    var(--bg),
    var(--bg) 3px,
    var(--border) 3px,
    var(--border) 6px
  );
}

.help-body {
  font-size: 0.95rem;
  color: var(--ink-muted);
}

.help-body p {
  margin: 0 0 0.85rem;
}

.help-body ul {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}

.help-body li {
  margin-bottom: 0.4rem;
}

.help-colors {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.help-swatch {
  text-align: center;
  padding: 0.55rem;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 700;
}

.help-swatch.diff-1 { background: var(--diff-1); color: var(--diff-1-text); }
.help-swatch.diff-2 { background: var(--diff-2); color: var(--diff-2-text); }
.help-swatch.diff-3 { background: var(--diff-3); color: var(--diff-3-text); }
.help-swatch.diff-4 { background: var(--diff-4); color: var(--diff-4-text); }

/* Animations */

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-5px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(3px); }
}

@keyframes pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

@keyframes solveIn {
  from {
    opacity: 0;
    transform: translateY(6px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */

@media (max-width: 480px) {
  .header-inner,
  .main {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  .tile {
    min-height: 4rem;
    padding: 0.35rem 0.2rem;
    font-size: clamp(0.55rem, 2.8vw, 0.72rem);
    border-radius: 8px;
  }

  .tile-grid {
    gap: 0.35rem;
  }

  .btn {
    padding: 0.65rem 1rem;
    font-size: 0.85rem;
  }

  .puzzle-picker {
    grid-template-columns: repeat(5, 1fr);
    gap: 0.35rem;
  }

  .mistakes {
    flex-direction: column;
    gap: 0.35rem;
  }
}

@media (max-width: 360px) {
  .tile {
    min-height: 3.6rem;
    font-size: 0.52rem;
  }
}

@media (min-width: 700px) {
  .tile {
    min-height: 5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.confetti-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 200;
}