:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-2: #eef1f8;
  --text: #1c2230;
  --text-dim: #626c80;
  --border: #dde2ee;
  --accent: #4a6cf7;
  --accent-2: #7fb4e8;
  --hit: #4caf7d;
  --hit-bg: #d9f2e4;
  --close: #f0a833;
  --close-bg: #fbe9c9;
  --miss-bg: #e7e9ef;
  --shadow: 0 8px 24px rgba(30, 40, 70, 0.08);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12141c;
    --surface: #1b1e29;
    --surface-2: #232735;
    --text: #eef0f6;
    --text-dim: #a2a8bb;
    --border: #323748;
    --accent: #7d97ff;
    --accent-2: #6fa3d8;
    --hit: #4fbf8a;
    --hit-bg: #163828;
    --close: #e0a63f;
    --close-bg: #3a2e14;
    --miss-bg: #262a38;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans JP", "Hiragino Sans", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

.hero {
  text-align: center;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  margin: 0 0 6px;
  font-weight: 900;
}

.hero h1 .grad-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.modes {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 18px;
}

.mode-btn {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  font-weight: 700;
  cursor: pointer;
  font-size: 0.92rem;
  transition: all 0.15s ease;
}

.mode-btn.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.status-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
  flex-wrap: wrap;
}

.status-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 64px;
  padding: 0 10px;
}

.status-label {
  font-size: 0.7rem;
  color: var(--text-dim);
}

.status-value {
  font-size: 1.15rem;
  font-weight: 800;
}

.stats-btn {
  margin-left: auto;
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 8px;
}

.stats-btn:hover {
  background: var(--surface-2);
}

.guess-form {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.autocomplete {
  position: relative;
  flex: 1 1 240px;
}

#guessInput {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
}

#guessInput:focus {
  outline: 2px solid var(--accent);
}

.suggest-list {
  position: absolute;
  z-index: 20;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  margin: 0;
  padding: 4px;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  max-height: 260px;
  overflow-y: auto;
}

.suggest-list li {
  padding: 9px 10px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.92rem;
}

.suggest-list li .sym-chip {
  font-weight: 800;
  color: var(--text-dim);
}

.suggest-list li:hover,
.suggest-list li.is-active {
  background: var(--surface-2);
}

.submit-btn,
.giveup-btn {
  padding: 12px 18px;
  border-radius: 10px;
  border: none;
  font-weight: 700;
  cursor: pointer;
  font-size: 0.95rem;
}

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

.submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.giveup-btn {
  background: var(--surface-2);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.hint-line {
  min-height: 1.2em;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin: 4px 2px 18px;
}

.board {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 16px;
}

.board-head,
.guess-row {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 0.9fr 0.6fr 0.6fr 0.8fr 1fr 0.8fr;
  gap: 6px;
  align-items: center;
  padding: 10px 12px;
}

.board-head {
  background: var(--surface-2);
  font-size: 0.72rem;
  color: var(--text-dim);
  font-weight: 700;
  text-align: center;
}

.board-head span:first-child {
  text-align: left;
}

.board-rows {
  max-height: 60vh;
  overflow-y: auto;
}

.guess-row {
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  animation: pop 0.25s ease;
}

@keyframes pop {
  from {
    transform: scale(0.96);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.guess-row .cell {
  text-align: center;
  border-radius: 8px;
  padding: 8px 4px;
  font-weight: 700;
  position: relative;
}

.guess-row .cell.elname {
  text-align: left;
  font-weight: 600;
  background: none !important;
}

.cell .arrow {
  font-size: 0.75rem;
  margin-left: 2px;
  opacity: 0.75;
}

.cell.hit {
  background: var(--hit-bg);
  color: var(--hit);
}

.cell.close {
  background: var(--close-bg);
  color: var(--close);
}

.cell.miss {
  background: var(--miss-bg);
  color: var(--text-dim);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.swatch {
  width: 12px;
  height: 12px;
  border-radius: 4px;
  display: inline-block;
}

.swatch-hit {
  background: var(--hit);
}

.swatch-close {
  background: var(--close);
}

.swatch-miss {
  background: var(--miss-bg);
  border: 1px solid var(--border);
}

.result-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  text-align: center;
  margin-bottom: 20px;
}

.result-panel h2 {
  margin: 0 0 8px;
}

.result-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 14px;
  flex-wrap: wrap;
}

.share-btn,
.again-btn {
  padding: 10px 18px;
  border-radius: 10px;
  border: none;
  font-weight: 700;
  cursor: pointer;
}

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

.again-btn {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}

.footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.78rem;
  margin-top: 30px;
}

.footer-sub {
  opacity: 0.6;
  margin-top: 2px;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(10, 12, 20, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 16px;
}

.modal[hidden] {
  display: none;
}

.modal-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 360px;
  position: relative;
  box-shadow: var(--shadow);
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 14px;
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--text-dim);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
  text-align: center;
}

.stats-grid strong {
  display: block;
  font-size: 1.6rem;
}

.stats-grid span {
  font-size: 0.75rem;
  color: var(--text-dim);
}

@media (max-width: 640px) {
  .board-head {
    display: none;
  }

  .guess-row {
    grid-template-columns: repeat(4, 1fr);
    grid-template-areas:
      "name name name name"
      "sym num per grp"
      "block cat cat state";
    padding: 12px;
    row-gap: 6px;
  }

  .guess-row .elname {
    grid-area: name;
    font-size: 0.95rem;
  }

  .guess-row .c-sym {
    grid-area: sym;
  }
  .guess-row .c-num {
    grid-area: num;
  }
  .guess-row .c-per {
    grid-area: per;
  }
  .guess-row .c-grp {
    grid-area: grp;
  }
  .guess-row .c-block {
    grid-area: block;
  }
  .guess-row .c-cat {
    grid-area: cat;
  }
  .guess-row .c-state {
    grid-area: state;
  }
}