:root {
  --paper: #f6f0e1;
  --paper-2: #ebe2cc;
  --ink: #2b2620;
  --ink-soft: #6b6152;
  --accent: #a83a2c;
  --spring: #e58fae;
  --summer: #2f9a6a;
  --autumn: #d2731e;
  --winter: #4c7fc4;
  --line: #cbbf9f;
  --font: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1e1b17;
    --paper-2: #2a2620;
    --ink: #ece4d2;
    --ink-soft: #a99e8a;
    --line: #4a4337;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  -webkit-text-size-adjust: 100%;
}
#app { max-width: 480px; margin: 0 auto; padding: 16px; min-height: 100%; }
.screen { display: none; flex-direction: column; gap: 14px; }
.screen.active { display: flex; }
h1.title { font-size: 48px; line-height: 1.1; text-align: center; margin: 32px 0 0; letter-spacing: .1em; }
h2 { margin: 8px 0 0; text-align: center; letter-spacing: .1em; }
.sub, .who, .vs, .note { text-align: center; color: var(--ink-soft); margin: 0; }
.card { background: var(--paper-2); border: 1px solid var(--line); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
label { font-size: 14px; color: var(--ink-soft); }
input { font: inherit; font-size: 18px; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); width: 100%; }
input[type=range] { padding: 0; accent-color: var(--accent); }
button { font: inherit; font-size: 17px; padding: 12px 16px; border-radius: 10px; border: 1px solid var(--line); background: var(--paper-2); color: var(--ink); cursor: pointer; }
button:disabled { opacity: .45; cursor: default; }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.ghost { background: transparent; border-color: transparent; color: var(--ink-soft); }
.card-btn { padding: 16px; }
.status { text-align: center; min-height: 1.5em; margin: 0; color: var(--ink-soft); }
.error { color: var(--accent); margin: 0; min-height: 1.2em; font-size: 14px; }
.rules ul { margin: 8px 0 0; padding-left: 20px; line-height: 1.7; font-size: 14px; }
.rules summary { cursor: pointer; }
output { font-weight: bold; color: var(--ink); font-size: 18px; }

/* 対戦 */
.player { display: grid; grid-template-columns: 1fr auto; gap: 4px 8px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper-2); }
.pname { font-weight: bold; }
.lives { text-align: right; color: var(--accent); letter-spacing: 1px; }
.charges { display: flex; gap: 6px; }
.charges i { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--ink-soft); display: inline-block; }
.charges i.on { background: radial-gradient(circle at 35% 35%, #fff6, transparent 60%), var(--accent); border-color: var(--accent); }
.decided { text-align: right; font-size: 13px; color: var(--ink-soft); }
.player.hit { animation: shake .45s; }
@keyframes shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
.arena { min-height: 180px; display: flex; flex-direction: column; gap: 8px; }
.turn { text-align: center; color: var(--ink-soft); font-size: 14px; }
.reveal { display: flex; flex-direction: column; gap: 8px; }
.move { border-left: 4px solid var(--line); padding: 4px 10px; }
.move .who { text-align: left; font-size: 13px; }
.move .act-name { font-weight: bold; }
.haiku-text { writing-mode: horizontal-tb; line-height: 1.6; }
.kigo { padding: 0 2px; border-radius: 4px; color: #fff; font-weight: bold; }
.kigo.spring, .chip.spring { background: var(--spring); }
.kigo.summer, .chip.summer { background: var(--summer); }
.kigo.autumn, .chip.autumn { background: var(--autumn); }
.kigo.winter, .chip.winter { background: var(--winter); }
.events { margin: 0; padding-left: 18px; line-height: 1.7; }
.events .big { color: var(--accent); font-weight: bold; }
.actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.act { padding: 18px 4px; font-size: 18px; font-weight: bold; }
.act.haiku { background: var(--ink); color: var(--paper); }
.haiku-form { display: flex; flex-direction: column; gap: 8px; }
.kigo-line { display: flex; justify-content: space-between; align-items: center; gap: 8px; min-height: 28px; font-size: 14px; }
.chip { color: #fff; border-radius: 999px; padding: 2px 10px; margin-right: 4px; font-size: 13px; }
.row { display: flex; gap: 8px; justify-content: space-between; }
.row button { flex: 1; }
.result-log { font-size: 14px; line-height: 1.6; padding-left: 22px; max-height: 50vh; overflow: auto; }
#result-title { font-size: 36px; }

/* 切断中マーク：🛜 に斜線 */
.offline { position: relative; display: inline-block; filter: grayscale(1); opacity: .8; }
.offline::after { content: ""; position: absolute; left: -2px; right: -2px; top: 50%; height: 2px; background: var(--accent); transform: rotate(-45deg); border-radius: 1px; }
.resume { border-color: var(--accent); color: var(--accent); font-weight: bold; }