/* =============================================
   アナグラム生成補助 — anagram.css
   国語辞典世界観
   ============================================= */

:root {
  --clr-paper:        #f0e8cc;
  --clr-paper-dk:     #e4d8b0;
  --clr-paper-deep:   #d8cb98;
  --clr-ink:          #1a120a;
  --clr-ink-mid:      #3a2c18;
  --clr-ink-light:    #6b5538;
  --clr-vermilion:    #c0392b;
  --clr-cobalt:       #1a4a7a;
  --clr-cobalt-lt:    rgba(26,74,122,0.1);
  --clr-gold:         #9a7a32;
  --clr-gold-lt:      rgba(154,122,50,0.12);
  --clr-green:        #2e7d50;
  --clr-green-lt:     rgba(46,125,80,0.1);
  --clr-rule:         #c0a870;
  --clr-rule-lt:      #d8c898;
  --clr-muted:        #a08060;

  /* タイル専用 */
  --clr-tile-unused:   #f0e8cc;
  --clr-tile-used:     #d0c8a8;
  --clr-tile-selected: #1a4a7a;
  --clr-tile-chunk:    #4a1030;

  --font-m: 'Noto Serif JP', 'Yu Mincho', serif;
  --font-e: 'Libre Baskerville', Georgia, serif;
  --ease-book: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }

body {
  font-family: var(--font-m);
  background-color: var(--clr-paper);
  color: var(--clr-ink);
  min-height: 100svh;
  overflow-x: hidden;
}

/* ─── 横罫線 ─── */
.paper-lines {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 27px,
    rgba(139,110,60,0.08) 27px,
    rgba(139,110,60,0.08) 28px
  );
}

/* ─── ヘッダー ─── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--clr-ink);
  border-bottom: 3px solid var(--clr-vermilion);
  padding: clamp(0.55rem,1.5vw,0.85rem) clamp(1rem,4vw,2rem);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  box-shadow: 0 3px 14px rgba(0,0,0,0.28);
}

.header-center { text-align: center; }

.header-center h1 {
  font-size: clamp(0.88rem,2.2vw,1.1rem);
  font-weight: 700;
  color: var(--clr-paper);
  letter-spacing: 0.2em;
}

.header-sub {
  font-family: var(--font-e);
  font-style: italic;
  font-size: clamp(0.52rem,1vw,0.62rem);
  color: var(--clr-rule);
  letter-spacing: 0.1em;
  margin-top: 0.1rem;
}

.home-btn {
  font-size: clamp(0.6rem,1.1vw,0.7rem);
  color: var(--clr-rule);
  text-decoration: none;
  border: 1px solid var(--clr-rule);
  border-radius: 2rem;
  padding: 0.28em 0.75em;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
  letter-spacing: 0.06em;
}
.home-btn:hover { background: var(--clr-rule); color: var(--clr-ink); }

/* ─── メイン ─── */
main {
  position: relative;
  z-index: 1;
  max-width: 56rem;
  margin: 0 auto;
  padding: clamp(1.25rem,3vw,2rem) clamp(0.85rem,3vw,1.5rem) clamp(2rem,5vw,3.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ─── ツールセクション ─── */
.tool-section {
  background: var(--clr-paper);
  border: 1px solid var(--clr-rule);
  overflow: hidden;
}

/* ─── セクションラベル ─── */
.section-label {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.5rem 1rem;
  background: var(--clr-paper-dk);
  border-bottom: 1px solid var(--clr-rule-lt);
  flex-wrap: wrap;
}

.label-num {
  font-size: clamp(0.55rem,1vw,0.65rem);
  font-weight: 700;
  color: var(--clr-gold);
  letter-spacing: 0.25em;
  flex-shrink: 0;
}

.label-text {
  font-size: clamp(0.72rem,1.4vw,0.85rem);
  font-weight: 700;
  color: var(--clr-ink);
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.label-hint {
  font-size: clamp(0.55rem,0.95vw,0.65rem);
  color: var(--clr-muted);
  font-family: var(--font-e);
  font-style: italic;
  letter-spacing: 0.04em;
}

/* ─── 共通インプット行 ─── */
.input-row {
  display: flex;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  align-items: stretch;
}

.main-input {
  flex: 1;
  padding: 0.6rem 0.9rem;
  font-family: var(--font-m);
  font-size: clamp(0.9rem,1.8vw,1.05rem);
  letter-spacing: 0.12em;
  background: var(--clr-paper);
  border: 1.5px solid var(--clr-rule);
  border-radius: 2px;
  color: var(--clr-ink);
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}
.main-input:focus {
  border-color: var(--clr-cobalt);
  box-shadow: 0 0 0 2px var(--clr-cobalt-lt);
}
.main-input::placeholder {
  color: var(--clr-muted);
  font-size: 0.85em;
  letter-spacing: 0.06em;
}

/* ─── ボタン ─── */
.btn {
  padding: 0.6rem 1.1rem;
  border-radius: 2px;
  font-family: var(--font-m);
  font-size: clamp(0.68rem,1.2vw,0.78rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  border: none;
  transition: opacity 0.15s, transform 0.1s, background 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
}
.btn:hover  { opacity: 0.85; }
.btn:active { transform: scale(0.97); }

.btn-primary { background: var(--clr-cobalt); color: var(--clr-paper); }
.btn-ghost {
  background: transparent;
  color: var(--clr-muted);
  border: 1px solid var(--clr-rule);
}
.btn-ghost:hover { background: var(--clr-paper-deep); color: var(--clr-ink-mid); opacity: 1; }

.btn-chunk {
  background: var(--clr-tile-chunk);
  color: var(--clr-paper);
  font-size: clamp(0.62rem,1.1vw,0.72rem);
}
.btn-chunk:disabled {
  background: var(--clr-paper-deep);
  color: var(--clr-muted);
  cursor: not-allowed;
  opacity: 0.6;
}

/* ─── タイルエリア ─── */
.tile-section { }

.tile-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 1rem 0;
  min-height: 2.4rem;
}

.selection-count {
  font-size: clamp(0.6rem,1.1vw,0.7rem);
  color: var(--clr-cobalt);
  font-family: var(--font-e);
  font-style: italic;
  letter-spacing: 0.06em;
}

.tile-area {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.75rem 1rem 1rem;
  min-height: 5rem;
  align-items: flex-start;
  align-content: flex-start;
}

.tile-empty {
  font-size: clamp(0.68rem,1.2vw,0.78rem);
  color: var(--clr-muted);
  font-style: italic;
  font-family: var(--font-e);
  letter-spacing: 0.06em;
  align-self: center;
}

/* ─── 個別タイル ─── */
.tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: clamp(2.4rem,5vw,3rem);
  height: clamp(2.4rem,5vw,3rem);
  padding: 0 0.4rem;
  border: 1.5px solid var(--clr-rule);
  border-radius: 3px;
  font-size: clamp(1rem,2.2vw,1.35rem);
  font-weight: 700;
  font-family: var(--font-m);
  letter-spacing: 0.02em;
  cursor: pointer;
  user-select: none;
  position: relative;
  transition:
    background 0.15s var(--ease-book),
    color 0.15s,
    border-color 0.15s,
    transform 0.1s,
    opacity 0.2s;
  /* チャンクタイルは横幅可変 */
}

/* 未使用 */
.tile.state-unused {
  background: var(--clr-tile-unused);
  color: var(--clr-ink);
  border-color: var(--clr-rule);
}
.tile.state-unused:hover {
  border-color: var(--clr-cobalt);
  transform: translateY(-2px);
  box-shadow: 0 3px 8px rgba(0,0,0,0.12);
}

/* 選択中 */
.tile.state-selected {
  background: var(--clr-tile-selected);
  color: var(--clr-paper);
  border-color: var(--clr-tile-selected);
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(26,74,122,0.3);
}

/* 使用済 */
.tile.state-used {
  background: var(--clr-tile-used);
  color: var(--clr-ink-light);
  border-color: var(--clr-rule-lt);
  opacity: 0.5;
  cursor: default;
}

/* ドラッグ中（元タイルを半透明に） */
.tile.is-dragging {
  opacity: 0.3;
  transform: translateY(-2px);
  border-style: dashed;
  pointer-events: none;
}

/* ドロップ先ハイライト */
.tile.drag-over {
  border-color: var(--clr-gold);
  background: var(--clr-gold-lt);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(154,122,50,0.25);
}

/* チャンクタイル */
.tile.is-chunk {
  background: rgba(74,16,48,0.08);
  border-color: var(--clr-tile-chunk);
  border-style: solid;
  color: var(--clr-tile-chunk);
  font-size: clamp(0.85rem,1.8vw,1.1rem);
  gap: 0.05em;
  padding: 0 0.6rem;
}
.tile.is-chunk.state-selected {
  background: var(--clr-tile-chunk);
  color: var(--clr-paper);
}
.tile.is-chunk.state-used {
  background: rgba(74,16,48,0.04);
  color: rgba(74,16,48,0.4);
}

/* タイル内の削除ボタン（チャンク解除） */
.tile-del {
  position: absolute;
  top: -0.35rem;
  right: -0.35rem;
  width: 1rem;
  height: 1rem;
  background: var(--clr-vermilion);
  color: var(--clr-paper);
  border: none;
  border-radius: 50%;
  font-size: 0.5rem;
  line-height: 1;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0;
  z-index: 2;
}
.tile.is-chunk:hover .tile-del { display: flex; }

/* 凡例 */
.tile-legend {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  padding: 0.5rem 1rem 0.75rem;
  border-top: 1px dotted var(--clr-rule-lt);
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: clamp(0.55rem,0.95vw,0.65rem);
  color: var(--clr-muted);
  letter-spacing: 0.06em;
}
.legend-swatch {
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 2px;
  border: 1px solid var(--clr-rule);
  flex-shrink: 0;
}
.swatch-unused   { background: var(--clr-tile-unused); }
.swatch-used     { background: var(--clr-tile-used); opacity: 0.5; }
.swatch-selected { background: var(--clr-tile-selected); border-color: var(--clr-tile-selected); }
.swatch-chunk    { background: rgba(74,16,48,0.08); border-color: var(--clr-tile-chunk); }

/* ─── チャンク一覧 ─── */
.chunk-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  min-height: 3.5rem;
  align-items: flex-start;
  align-content: flex-start;
}

/* チャンクバッジ（一覧表示用） */
.chunk-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22em 0.65em;
  background: rgba(74,16,48,0.06);
  border: 1px solid var(--clr-tile-chunk);
  border-radius: 2px;
  font-size: clamp(0.68rem,1.3vw,0.82rem);
  font-weight: 700;
  color: var(--clr-tile-chunk);
  font-family: var(--font-m);
  letter-spacing: 0.06em;
}

.chunk-badge-del {
  background: none;
  border: none;
  color: rgba(74,16,48,0.4);
  cursor: pointer;
  font-size: 0.75em;
  padding: 0;
  line-height: 1;
  transition: color 0.12s;
}
.chunk-badge-del:hover { color: var(--clr-vermilion); }

/* ─── アウトプットゾーン ─── */
.output-area {
  padding: 0.75rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

/* クリック追加タイル一覧 */
.built-tiles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  min-height: 2.2rem;
  align-items: center;
  padding: 0.35rem 0.5rem;
  background: var(--clr-paper-dk);
  border: 1px dashed var(--clr-rule);
  border-radius: 2px;
}

.built-tile {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.12em 0.5em;
  background: var(--clr-paper);
  border: 1px solid var(--clr-rule);
  border-radius: 2px;
  font-size: clamp(0.78rem,1.5vw,0.92rem);
  font-weight: 700;
  color: var(--clr-ink-mid);
  font-family: var(--font-m);
  letter-spacing: 0.04em;
}

.built-tile-del {
  background: none;
  border: none;
  color: var(--clr-muted);
  cursor: pointer;
  font-size: 0.7em;
  padding: 0;
  line-height: 1;
  transition: color 0.12s;
}
.built-tile-del:hover { color: var(--clr-vermilion); }

.built-tiles:empty::before {
  content: 'タイルをクリックすると追加されます';
  font-size: clamp(0.6rem,1vw,0.68rem);
  color: var(--clr-muted);
  font-style: italic;
  font-family: var(--font-e);
  letter-spacing: 0.06em;
}

.result-input {
  font-size: clamp(0.92rem,1.8vw,1.1rem);
}

/* ─── ステータスバー ─── */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.45rem 0.65rem;
  background: var(--clr-paper-dk);
  border: 1px solid var(--clr-rule-lt);
  border-radius: 2px;
  font-size: clamp(0.62rem,1.1vw,0.72rem);
  letter-spacing: 0.06em;
  min-height: 2.2rem;
  transition: background 0.2s, border-color 0.2s;
}
/* エラー時はバー全体をほんのり赤に */
.status-bar:has(.status-check.error) {
  background: rgba(192,57,43,0.06);
  border-color: rgba(192,57,43,0.3);
}

.status-remaining {
  color: var(--clr-ink-mid);
}

.status-check {
  font-weight: 700;
}
.status-check.ok      { color: var(--clr-green); }
.status-check.over    { color: var(--clr-vermilion); }
.status-check.pending { color: var(--clr-muted); }
.status-check.error   { color: var(--clr-vermilion); }

/* ─── フッター ─── */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 1.25rem;
  border-top: 1px solid var(--clr-rule-lt);
}
.footer-text {
  font-family: var(--font-e);
  font-style: italic;
  font-size: clamp(0.58rem,1vw,0.68rem);
  color: var(--clr-muted);
  letter-spacing: 0.1em;
}

/* ─── レスポンシブ ─── */
@media (max-width: 540px) {
  header {
    grid-template-columns: 1fr;
    gap: 0.3rem;
    text-align: center;
  }
  .home-btn { justify-self: start; }
  .input-row { flex-wrap: wrap; }
  .main-input { width: 100%; }
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ─── Focus ─── */
:focus-visible { outline: 2px solid var(--clr-cobalt); outline-offset: 2px; }