/* ===== 再エネ打 スタイル ===== */
:root {
  --bg: #0d2b2e;
  --sky-top: #7fd4e6;
  --sky-bottom: #d8f5e3;
  --green: #2f9e6e;
  --green-dark: #1d7a52;
  --leaf: #8fd14f;
  --sun: #ffd54a;
  --accent: #ffb020;
  --ink: #14322f;
  --muted: #5b7c77;
  --done: #b7c4c2;
  --todo: #14322f;
  --miss: #e2453c;
  --plus: #2f9e6e;
  --card: #ffffff;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 50% -10%, #14484a 0%, var(--bg) 60%);
  min-height: 100vh;
}

#app {
  max-width: 880px;
  margin: 0 auto;
  padding: 18px 16px 8px;
}

.screen { display: none; animation: fade 0.25s ease; }
.screen.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ===== スタート画面 ===== */
.hero { text-align: center; padding: 18px 0 8px; }
.title {
  font-size: 64px;
  margin: 0;
  color: #fff;
  letter-spacing: 0.06em;
  text-shadow: 0 4px 0 var(--green-dark), 0 8px 22px rgba(0, 0, 0, 0.35);
}
.title-en {
  display: block;
  font-size: 16px;
  letter-spacing: 0.4em;
  color: var(--leaf);
  margin-top: 6px;
  text-shadow: none;
}
.tagline { color: #d8f5e3; margin: 12px 0 4px; font-size: 16px; }

.courses {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin: 26px 0 18px;
}
.course-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 22px 12px 18px;
  border: none;
  border-radius: 18px;
  background: var(--card);
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.course-card:hover { transform: translateY(-4px); box-shadow: 0 16px 38px rgba(0,0,0,0.26); }
.course-card:active { transform: translateY(-1px); }
.course-card.recommend { outline: 3px solid var(--sun); }
.course-emoji { font-size: 40px; }
.course-name { font-weight: 800; font-size: 19px; }
.course-desc { color: var(--muted); font-size: 13px; }
.course-target { color: var(--green-dark); font-weight: 700; font-size: 13px; margin-top: 4px; }
.badge {
  position: absolute;
  top: -10px; right: 12px;
  background: var(--sun);
  color: #7a4a00;
  font-size: 11px; font-weight: 800;
  padding: 3px 10px; border-radius: 999px;
  box-shadow: 0 3px 8px rgba(0,0,0,0.2);
}

.howto {
  background: rgba(255,255,255,0.92);
  border-radius: 16px;
  padding: 16px 20px;
  box-shadow: var(--shadow);
}
.howto h2 { margin: 0 0 8px; font-size: 16px; color: var(--green-dark); }
.howto ul { margin: 0; padding-left: 20px; line-height: 1.7; font-size: 14px; }
.howto code {
  background: #eef6f1; color: var(--green-dark);
  padding: 1px 6px; border-radius: 6px; font-size: 13px;
}

.start-foot { text-align: center; margin: 18px 0 6px; }

/* ===== ボタン ===== */
.ghost-btn {
  background: rgba(255,255,255,0.9);
  border: none; border-radius: 999px;
  padding: 8px 18px; font-size: 14px; font-weight: 700;
  color: var(--ink); cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.ghost-btn.small { padding: 6px 12px; font-size: 12px; }
.ghost-btn:hover { background: #fff; }
.primary-btn {
  background: linear-gradient(180deg, var(--green) 0%, var(--green-dark) 100%);
  color: #fff; border: none; border-radius: 999px;
  padding: 12px 26px; font-size: 16px; font-weight: 800; cursor: pointer;
  box-shadow: 0 8px 20px rgba(29,122,82,0.45);
}
.primary-btn:hover { filter: brightness(1.06); }

/* ===== ゲーム画面 ===== */
.hud {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: rgba(255,255,255,0.92);
  border-radius: 14px; padding: 10px 16px;
  box-shadow: var(--shadow);
}
.hud-item { display: flex; flex-direction: column; line-height: 1.1; }
.hud-item[hidden] { display: none; }
.hud-label { font-size: 11px; color: var(--muted); }
.hud-val { font-size: 16px; font-weight: 800; }
.hud-val b { font-size: 18px; color: var(--green-dark); }
.hud #quit { margin-left: auto; }

.stage { position: relative; margin: 16px 0; }

.countdown {
  position: absolute; inset: 0;
  display: none; align-items: center; justify-content: center;
  font-size: 88px; font-weight: 900; color: #fff;
  text-shadow: 0 6px 0 var(--green-dark), 0 10px 30px rgba(0,0,0,0.4);
  z-index: 10; pointer-events: none;
}
.countdown.show { display: flex; }
.countdown.pop { animation: cd 0.6s ease; }
@keyframes cd { 0% { transform: scale(0.4); opacity: 0; } 40% { transform: scale(1.15); opacity: 1; } 100% { transform: scale(1); opacity: 1; } }

.conveyor {
  position: relative;
  height: 230px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.sky {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, var(--sky-top) 0%, var(--sky-bottom) 78%);
}
.sky::before {
  content: "☁️  ☁️       ☁️";
  position: absolute; top: 16px; left: 0; right: 0;
  text-align: center; font-size: 26px; opacity: 0.85;
  animation: drift 14s linear infinite;
}
@keyframes drift { from { transform: translateX(-30px); } to { transform: translateX(30px); } }

.belt {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 64px;
  background: linear-gradient(180deg, #44525a 0%, #2c363c 100%);
  border-top: 5px solid #1c252a;
}
.belt-stripes {
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(
    90deg, transparent 0 28px, rgba(255,255,255,0.10) 28px 56px
  );
  animation: roll 0.8s linear infinite;
}
@keyframes roll { from { background-position: 0 0; } to { background-position: -56px 0; } }
.goal {
  position: absolute; left: 8px; bottom: 64px;
  font-size: 44px;
  filter: drop-shadow(0 3px 4px rgba(0,0,0,0.3));
}

.plate {
  position: absolute;
  left: 88%; bottom: 52px;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center;
  min-width: 96px; padding: 8px 14px 26px;
  z-index: 4;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.plate::after {
  content: "";
  position: absolute; bottom: 6px; left: 50%; transform: translateX(-50%);
  width: 104px; height: 22px;
  background: radial-gradient(closest-side, #fff 0%, #e3eef0 70%, #c4d3d5 100%);
  border-radius: 50%;
  box-shadow: 0 6px 10px rgba(0,0,0,0.25);
  z-index: -1;
}
.plate-icon { font-size: 46px; line-height: 1; filter: drop-shadow(0 3px 3px rgba(0,0,0,0.25)); }
.plate-label {
  margin-top: 4px;
  background: var(--ink); color: #fff;
  font-weight: 800; font-size: 15px;
  padding: 3px 10px; border-radius: 999px;
  white-space: nowrap;
}
.plate.eaten { transform: translateX(-50%) scale(1.5); opacity: 0; }
.plate.dropped { animation: drop 0.3s ease forwards; }
@keyframes drop { to { transform: translate(-50%, 50px); opacity: 0; } }

.gain-pop {
  position: absolute; bottom: 120px; left: 80%;
  transform: translateX(-50%);
  font-weight: 900; font-size: 22px; color: var(--green-dark);
  text-shadow: 0 2px 0 #fff; opacity: 0; pointer-events: none; z-index: 6;
}
.gain-pop.show { animation: floatup 0.8s ease forwards; }
@keyframes floatup {
  0% { opacity: 0; transform: translate(-50%, 10px); }
  20% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -40px); }
}

/* エンドレスの時間回復ポップ（kWh ポップの少し上に出す） */
.time-gain {
  position: absolute; bottom: 156px; left: 80%;
  transform: translateX(-50%);
  font-weight: 900; font-size: 18px; color: #b8860b;
  text-shadow: 0 2px 0 #fff; opacity: 0; pointer-events: none; z-index: 6;
}
.time-gain.show { animation: floatup 0.9s ease forwards; }

/* ===== 入力エリア ===== */
.typing { text-align: center; margin-top: 6px; }
.reading {
  font-size: 38px; font-weight: 800; color: #fff;
  letter-spacing: 0.05em; min-height: 50px;
  text-shadow: 0 3px 12px rgba(0,0,0,0.35);
}
.guide {
  font-family: "SFMono-Regular", "Consolas", "Menlo", monospace;
  font-size: 30px; letter-spacing: 0.04em; min-height: 42px;
  background: rgba(255,255,255,0.95);
  display: inline-block;
  padding: 6px 22px; border-radius: 12px; margin-top: 8px;
  box-shadow: var(--shadow);
}
.guide .done { color: var(--done); }
.guide .todo { color: var(--todo); font-weight: 700; }
.guide.miss { animation: shake 0.25s ease; background: #ffe3e1; }
@keyframes shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.timebar {
  width: 70%; max-width: 520px; height: 12px;
  margin: 16px auto 0;
  background: rgba(255,255,255,0.35);
  border-radius: 999px; overflow: hidden;
}
.timebar-fill {
  height: 100%; width: 100%;
  background: linear-gradient(90deg, var(--leaf), var(--green));
  border-radius: 999px;
  transition: width 0.06s linear;
}
.timebar-fill.danger { background: linear-gradient(90deg, #ffb020, var(--miss)); }

/* ===== リザルト ===== */
.result-title { text-align: center; color: #fff; font-size: 30px; margin: 10px 0 18px; }
.rank-box {
  display: flex; align-items: center; gap: 18px;
  background: rgba(255,255,255,0.95); border-radius: 18px;
  padding: 18px 24px; box-shadow: var(--shadow);
}
.rank-icon { font-size: 58px; }
.rank-title { font-size: 26px; font-weight: 900; color: var(--green-dark); }
.rank-msg { color: var(--muted); margin-top: 4px; }

.power-box {
  margin-top: 16px; background: rgba(255,255,255,0.95);
  border-radius: 18px; padding: 18px 24px; box-shadow: var(--shadow); text-align: center;
}
.power-main { display: flex; align-items: baseline; justify-content: center; gap: 12px; }
.power-label { font-size: 15px; color: var(--muted); }
.power-val { font-size: 40px; font-weight: 900; color: var(--green-dark); }
.power-sub { color: var(--muted); margin-top: 2px; }
.balance { font-size: 22px; font-weight: 900; margin: 10px 0 4px; }
.balance.plus { color: var(--plus); }
.balance.minus { color: var(--miss); }
.power-co2 { font-size: 14px; color: var(--muted); }

.result-grid {
  margin-top: 16px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
}
.cell {
  background: rgba(255,255,255,0.95); border-radius: 12px;
  padding: 12px 10px; text-align: center; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 4px;
}
.cell-label { font-size: 12px; color: var(--muted); }
.cell-val { font-size: 20px; font-weight: 800; }

.result-actions { display: flex; gap: 12px; justify-content: center; margin: 22px 0 8px; flex-wrap: wrap; }

/* ===== コンボ表示 ===== */
.combo {
  position: absolute; top: 12px; right: 18px;
  display: none; align-items: baseline; gap: 6px;
  font-weight: 900; color: #fff; z-index: 6;
  text-shadow: 0 3px 0 rgba(0,0,0,0.25), 0 6px 16px rgba(0,0,0,0.3);
  pointer-events: none;
}
.combo.show { display: flex; }
.combo b { font-size: 44px; line-height: 1; }
.combo-label { font-size: 13px; letter-spacing: 0.12em; }
.combo-x { font-size: 20px; color: var(--sun); }
.combo.t2 b { color: var(--sun); }
.combo.t3 b { color: #ff8a3d; }
.combo.pop b { animation: combopop 0.18s ease; }
@keyframes combopop { 0% { transform: scale(1.3); } 100% { transform: scale(1); } }

/* ===== フィーバー ===== */
#screen-game.fever .sky { filter: saturate(1.6) brightness(1.07) hue-rotate(-14deg); }
#screen-game.fever .conveyor {
  box-shadow: 0 0 0 3px var(--sun), 0 0 36px rgba(255, 213, 74, 0.55), var(--shadow);
}
#screen-game.fever .combo-label::after { content: " FEVER!"; color: var(--sun); }

/* ===== 打鍵スパーク ===== */
.sparks { position: relative; height: 0; }
.spark {
  position: absolute; bottom: -10px;
  font-size: 18px; color: var(--sun);
  pointer-events: none;
  animation: sparkup 0.55s ease-out forwards;
}
@keyframes sparkup {
  0% { opacity: 1; transform: translateY(6px) scale(0.8) rotate(-8deg); }
  100% { opacity: 0; transform: translateY(-46px) scale(1.25) rotate(10deg); }
}

/* ===== 時間延長ポップ ===== */
.time-ext {
  height: 20px; margin-top: 6px;
  font-weight: 800; font-size: 14px; color: var(--sun);
  text-shadow: 0 2px 6px rgba(0,0,0,0.45);
  opacity: 0;
}
.time-ext.show { animation: extflash 1.1s ease; }
@keyframes extflash {
  0% { opacity: 0; transform: translateY(4px); }
  15% { opacity: 1; transform: none; }
  70% { opacity: 1; }
  100% { opacity: 0; }
}

/* ===== ハイスコア・ランキング ===== */
.record-banner {
  display: none; text-align: center;
  background: linear-gradient(90deg, var(--sun), #ffe9a0, var(--sun));
  color: #7a4a00; font-weight: 900; font-size: 18px;
  border-radius: 999px; padding: 8px 22px; margin: 0 auto 14px; width: fit-content;
  box-shadow: 0 6px 18px rgba(255, 213, 74, 0.45);
}
.record-banner.show { display: block; animation: bouncein 0.5s ease; }
@keyframes bouncein {
  0% { transform: scale(0.6); opacity: 0; }
  60% { transform: scale(1.08); }
  100% { transform: scale(1); opacity: 1; }
}

.ranking-box {
  margin-top: 16px;
  background: rgba(255,255,255,0.95); border-radius: 18px;
  padding: 14px 20px 16px; box-shadow: var(--shadow);
}
.ranking-title { margin: 0 0 8px; font-size: 15px; color: var(--green-dark); }
.rank-row {
  display: flex; align-items: baseline; gap: 10px;
  padding: 5px 6px; border-bottom: 1px dashed #e3ece9; font-size: 14px;
}
.rank-row:last-child { border-bottom: none; }
.rank-row.new { background: #fff7df; border-radius: 8px; }
.rank-medal { width: 26px; text-align: center; }
.rank-power { font-weight: 800; min-width: 110px; }
.rank-meta { color: var(--muted); font-size: 12px; }
.rank-new-badge {
  margin-left: auto;
  background: var(--accent); color: #fff;
  font-size: 10px; font-weight: 800;
  padding: 2px 8px; border-radius: 999px;
}

.course-best { font-size: 11px; color: var(--accent); font-weight: 700; min-height: 14px; }

.site-foot { text-align: center; color: #9fc7bd; font-size: 12px; padding: 10px 0 22px; }

/* ===== レスポンシブ ===== */
@media (max-width: 640px) {
  .title { font-size: 46px; }
  .courses { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: repeat(2, 1fr); }
  .reading { font-size: 28px; }
  .guide { font-size: 22px; }
  .conveyor { height: 200px; }
  .combo b { font-size: 32px; }
}