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

:root {
  --bg: #eef1f5;
  --text: #1a1a2e;
  --text-light: #6b7280;
  --col-bg: #dce3ec;
  --row-bg: #fdf4dc;
  --cell-bg: #ffffff;
  --cell-border: #d0d5dd;
  --cell-hover: #f5f7fa;
  --success-bg: #f0fdf4;
  --success-border: #86efac;
  --error-bg: #fef2f2;
  --error-border: #fca5a5;
  --error-fill: #ef4444;
  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --gap: 8px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

/* ── Header ── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 400;
  text-decoration: none;
  color: var(--text);
  line-height: 1;
}

.nav {
  display: flex;
  gap: 22px;
  align-items: center;
}

.nav-link {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: var(--text);
  text-decoration: none;
  text-transform: uppercase;
}

.nav-link:hover { opacity: 0.6; }

.divider {
  border: none;
  border-top: 1px solid #d0d5dd;
  margin: 16px 0 28px;
}

/* ── Grid info ── */
.grid-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 24px;
}

.grid-title {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.15;
}

.grid-date {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-top: 2px;
}

.score-display {
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
}

.score-display strong {
  font-weight: 700;
}

/* ── Grid ── */
.game-grid {
  display: grid;
  grid-template-columns: 130px repeat(3, 1fr);
  grid-template-rows: auto repeat(3, 110px);
  gap: var(--gap);
  margin-bottom: 28px;
}

.corner { /* empty top-left */ }

.col-header,
.row-header {
  border-radius: var(--radius);
  padding: 14px 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.35;
  user-select: none;
  position: relative;
}

.col-header {
  background: var(--col-bg);
  min-height: 88px;
}

.row-header {
  background: var(--row-bg);
}

.header-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

/* ── Cells ── */
.cell {
  background: var(--cell-bg);
  border: 2px solid var(--cell-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
  position: relative;
  overflow: visible;
  padding: 6px;
}

.cell:hover:not(.solved):not(.game-over) {
  background: var(--cell-hover);
  border-color: #aab2be;
}

.cell.active {
  border-color: var(--text);
  box-shadow: 0 0 0 3px rgba(26,26,46,0.08);
  z-index: 10;
  overflow: visible;
}

.cell.solved {
  background: var(--success-bg);
  border-color: var(--success-border);
  cursor: default;
}

.cell.error-flash {
  background: var(--error-bg);
  border-color: var(--error-border);
  animation: shake 0.35s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(2px); }
}

.cell.game-over {
  cursor: default;
  opacity: 0.7;
}

.artist-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.25;
  word-break: break-word;
}

.artist-rarity {
  font-size: 11px;
  color: var(--text-light);
  margin-top: 3px;
  font-weight: 500;
}

/* ── Autocomplete ── */
.autocomplete-input {
  width: 100%;
  height: 100%;
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  outline: none;
  color: var(--text);
}

.autocomplete-input::placeholder {
  color: #b0b8c4;
  font-weight: 400;
}

.autocomplete-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: -2px;
  right: -2px;
  z-index: 200;
  background: white;
  border: 2px solid var(--text);
  border-radius: var(--radius);
  max-height: 220px;
  overflow-y: auto;
  box-shadow: 0 12px 32px rgba(0,0,0,0.14);
}

.autocomplete-item {
  padding: 10px 14px;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid #f0f0f0;
  transition: background 0.1s;
}

.autocomplete-item:last-child { border-bottom: none; }
.autocomplete-item:first-child { border-radius: var(--radius) var(--radius) 0 0; }
.autocomplete-item:last-child { border-radius: 0 0 var(--radius) var(--radius); }
.autocomplete-item:only-child { border-radius: var(--radius); }

.autocomplete-item:hover,
.autocomplete-item.highlighted {
  background: #f0f4f8;
}

.autocomplete-item .hint {
  font-size: 11.5px;
  color: var(--text-light);
  font-weight: 400;
  white-space: nowrap;
}

/* ── Footer ── */
.grid-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.abandon-btn {
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 600;
  padding: 10px 22px;
  background: transparent;
  border: 2px solid var(--text);
  border-radius: 8px;
  cursor: pointer;
  color: var(--text);
  transition: background 0.15s;
}

.abandon-btn:hover { background: rgba(26,26,46,0.04); }
.abandon-btn:disabled { opacity: 0.4; cursor: default; }

.error-display {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 600;
}

.error-dots {
  display: flex;
  gap: 7px;
}

.error-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2.5px solid var(--text);
  background: transparent;
  transition: background 0.3s, border-color 0.3s;
}

.error-dot.filled {
  background: var(--error-fill);
  border-color: var(--error-fill);
}

/* ── End game banner ── */
.end-banner {
  text-align: center;
  padding: 24px;
  margin-top: 24px;
  background: white;
  border-radius: var(--radius);
  border: 2px solid var(--cell-border);
}

.end-banner h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 6px;
}

.end-banner p {
  font-size: 15px;
  color: var(--text-light);
}

/* ── Archive badge ── */
.archive-badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  background: var(--col-bg);
  color: var(--text-light);
  padding: 3px 10px;
  border-radius: 20px;
  margin-left: 10px;
  vertical-align: middle;
}

/* ── Footer site ── */
.site-footer {
  text-align: center;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid #d0d5dd;
  font-size: 12px;
  color: var(--text-light);
}

/* ══════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════ */

@media (max-width: 600px) {
  #app {
    padding: 16px 12px 32px;
  }

  .logo { font-size: 26px; }
  .nav { gap: 14px; }
  .nav-link { font-size: 11px; letter-spacing: 0.5px; }
  .divider { margin: 12px 0 20px; }

  .grid-info { margin-bottom: 16px; }
  .grid-title { font-size: 18px; }
  .grid-date { font-size: 14px; }
  .score-display { font-size: 13px; }

  .game-grid {
    grid-template-columns: 80px repeat(3, 1fr);
    grid-template-rows: auto repeat(3, 80px);
    gap: 5px;
    margin-bottom: 20px;
  }

  .col-header,
  .row-header {
    font-size: 10px;
    padding: 8px 5px;
    border-radius: 8px;
    line-height: 1.25;
  }

  .col-header { min-height: 64px; }

  .cell {
    border-radius: 8px;
    padding: 4px;
    border-width: 1.5px;
  }

  .artist-name { font-size: 10.5px; }

  .autocomplete-input {
    font-size: 12px;
  }

  .autocomplete-dropdown {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 45vh;
    border-radius: 16px 16px 0 0;
    border: none;
    border-top: 2px solid var(--text);
    box-shadow: 0 -8px 32px rgba(0,0,0,0.18);
  }

  .autocomplete-item {
    padding: 14px 16px;
    font-size: 15px;
  }

  .autocomplete-item .hint {
    font-size: 12px;
  }

  .autocomplete-item:first-child { border-radius: 0; }
  .autocomplete-item:last-child { border-radius: 0; }
  .autocomplete-item:only-child { border-radius: 0; }

  .grid-footer {
    gap: 12px;
  }

  .abandon-btn {
    font-size: 12px;
    padding: 8px 14px;
  }

  .error-display { font-size: 12px; gap: 8px; }
  .error-dot { width: 15px; height: 15px; border-width: 2px; }

  .end-banner { padding: 18px 14px; }
  .end-banner h3 { font-size: 17px; }
  .end-banner p { font-size: 13px; }
}

@media (max-width: 380px) {
  .game-grid {
    grid-template-columns: 68px repeat(3, 1fr);
    grid-template-rows: auto repeat(3, 70px);
    gap: 4px;
  }

  .col-header,
  .row-header {
    font-size: 9px;
    padding: 6px 4px;
  }

  .col-header { min-height: 56px; }

  .artist-name { font-size: 9.5px; }
  .autocomplete-input { font-size: 11px; }
}