/* ルナのナイト・ランナー — 絵本のような夜空 */
:root {
  --night-deep: #0b0e2a;
  --night-violet: #2a1b52;
  --night-horizon: #4a2b6b;
  --moon-gold: #ffd87a;
  --moon-amber: #ffb94a;
  --luna-pink: #ff9bc6;
  --luna-rose: #ff6fae;
  --star-white: #eaf2ff;
  --ink: #fff6fb;
  --ink-dim: #c9b8e8;
  --danger: #ff4d5e;
  --glass: rgba(20, 14, 48, 0.62);
  --glass-line: rgba(255, 216, 122, 0.22);
  --font-round: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", sans-serif;
  --font-num: "M PLUS Rounded 1c", "Zen Maru Gothic", sans-serif;
}

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

[hidden] { display: none !important; }

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--night-deep);
  font-family: var(--font-round);
  color: var(--ink);
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

#sky {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  touch-action: none;
}

/* ---------- HUD ---------- */
#hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 14px;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(6, 4, 24, 0.72), rgba(6, 4, 24, 0));
}

.hud-left {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.hud-title {
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 0.04em;
  background: linear-gradient(90deg, var(--luna-pink), var(--moon-gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  white-space: nowrap;
}

.diff-chip {
  align-self: flex-start;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 10px;
  border-radius: 999px;
  border: 1px solid var(--glass-line);
  background: var(--glass);
  color: var(--moon-gold);
}

.hud-right { display: flex; gap: 6px; }

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 62px;
  padding: 4px 10px 5px;
  border-radius: 14px;
  background: var(--glass);
  border: 1px solid rgba(201, 184, 232, 0.16);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.stat-label {
  font-size: 10px;
  color: var(--ink-dim);
  line-height: 1.2;
  letter-spacing: 0.06em;
}

.stat-value {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}

.stat-value small { font-size: 10px; font-weight: 700; color: var(--ink-dim); margin-left: 1px; }
.stat-value.gold { color: var(--moon-gold); }

.hearts { display: flex; gap: 2px; align-items: center; }
.hearts svg { width: 15px; height: 15px; }
.hearts .heart-count { font-size: 14px; color: var(--luna-pink); }

/* ---------- 画面共通 ---------- */
.screen {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 4vh, 34px);
  padding: 24px 16px calc(24px + env(safe-area-inset-bottom));
  overflow-y: auto;
}

/* ---------- タイトル ---------- */
.title-wrap { text-align: center; }

.title-eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.32em;
  color: var(--moon-gold);
  opacity: 0.9;
  margin-bottom: 10px;
  text-shadow: 0 1px 6px rgba(6, 4, 24, 0.9);
}

.game-logo {
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 52px);
  line-height: 1.18;
  letter-spacing: 0.03em;
  background: linear-gradient(115deg, #ffc7e0 8%, var(--luna-pink) 34%, var(--moon-gold) 78%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 3px 18px rgba(255, 155, 198, 0.35));
}

.title-lead {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.9;
  color: #e6dcf7;
  text-shadow: 0 1px 8px rgba(6, 4, 24, 0.9), 0 0 2px rgba(6, 4, 24, 0.8);
}

.sp-only { display: none; }

.diff-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 176px));
  gap: 14px;
}

.diff-card {
  appearance: none;
  border: 1px solid rgba(201, 184, 232, 0.2);
  border-radius: 20px;
  background: linear-gradient(165deg, rgba(42, 27, 82, 0.82), rgba(15, 12, 42, 0.9));
  color: var(--ink);
  font-family: inherit;
  text-align: center;
  padding: 20px 14px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
  box-shadow: 0 8px 26px rgba(4, 2, 18, 0.5);
}

.diff-card:hover, .diff-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--card-accent, var(--moon-gold));
  box-shadow: 0 12px 32px rgba(4, 2, 18, 0.6), 0 0 24px color-mix(in srgb, var(--card-accent, #ffd87a) 28%, transparent);
}

.diff-card:active { transform: translateY(-1px) scale(0.98); }

.diff-card:focus-visible { outline: 2px solid var(--moon-gold); outline-offset: 3px; }

.diff-card[data-diff="super_easy"] { --card-accent: #7fd8ff; }
.diff-card[data-diff="easy"]       { --card-accent: #8ce8b0; }
.diff-card[data-diff="normal"]     { --card-accent: #c39bff; }
.diff-card[data-diff="hard"]       { --card-accent: #ff7b8a; }

.diff-name { font-weight: 900; font-size: 18px; color: var(--card-accent); letter-spacing: 0.05em; }
.diff-desc { font-size: 11.5px; line-height: 1.7; color: var(--ink-dim); }

/* 月相アイコン(難易度ごとに欠けていく) */
.moon-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  position: relative;
  background: radial-gradient(circle at 36% 32%, #fff3cf, var(--moon-gold) 58%, var(--moon-amber));
  box-shadow: 0 0 18px color-mix(in srgb, var(--card-accent, #ffd87a) 55%, transparent),
              inset -3px -4px 8px rgba(180, 120, 40, 0.35);
}

.moon-icon::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: #171236;
}

.moon-icon[data-phase="full"]::before     { display: none; }
.moon-icon[data-phase="gibbous"]::before  { clip-path: ellipse(30% 54% at 8% 50%); }
.moon-icon[data-phase="half"]::before     { clip-path: inset(0 50% 0 0 round 0); }
.moon-icon[data-phase="crescent"]::before { clip-path: circle(46% at 32% 44%); }
.moon-icon[data-phase="crescent"] {
  background: radial-gradient(circle at 36% 32%, #ffd9c2, #ff9d76 58%, #f0644d);
}

.title-hint {
  font-size: 12px;
  color: #e6dcf7;
  padding: 5px 16px;
  border-radius: 999px;
  background: rgba(10, 7, 30, 0.55);
  border: 1px solid rgba(201, 184, 232, 0.18);
}

/* ---------- リザルト ---------- */
.modal { background: rgba(5, 3, 20, 0.66); backdrop-filter: blur(7px); -webkit-backdrop-filter: blur(7px); }

.result-card {
  width: min(400px, calc(100vw - 32px));
  border-radius: 26px;
  border: 1px solid var(--glass-line);
  background: linear-gradient(175deg, rgba(46, 30, 88, 0.95), rgba(12, 9, 36, 0.97));
  box-shadow: 0 24px 70px rgba(2, 1, 12, 0.7);
  padding: 30px 26px 26px;
  text-align: center;
}

.result-art { width: 92px; height: 92px; margin: 0 auto 8px; }
.result-art svg { width: 100%; height: 100%; }

.result-heading {
  font-weight: 900;
  font-size: 30px;
  letter-spacing: 0.04em;
  background: linear-gradient(100deg, var(--luna-pink), var(--moon-gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.result-sub { margin-top: 8px; font-size: 13.5px; line-height: 1.8; color: var(--ink-dim); }

.result-stats { display: flex; gap: 10px; margin: 20px 0 24px; }

.result-stat {
  flex: 1;
  background: rgba(6, 4, 24, 0.55);
  border: 1px solid rgba(201, 184, 232, 0.14);
  border-radius: 16px;
  padding: 12px 8px 14px;
}

.result-stat dt { font-size: 11px; color: var(--ink-dim); margin-bottom: 4px; }
.result-stat dd {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 22px;
  font-variant-numeric: tabular-nums;
}
.result-stat dd.big { font-size: 34px; line-height: 1.1; }
.result-stat dd.gold { color: var(--moon-gold); }

.result-actions { display: flex; flex-direction: column; gap: 10px; }

.btn-primary {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 13px 20px;
  font-family: inherit;
  font-weight: 900;
  font-size: 16px;
  letter-spacing: 0.06em;
  color: #3d2408;
  background: linear-gradient(100deg, var(--moon-gold), var(--moon-amber));
  box-shadow: 0 6px 22px rgba(255, 185, 74, 0.4);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 9px 28px rgba(255, 185, 74, 0.52); }
.btn-primary:active { transform: scale(0.97); }

.btn-ghost {
  appearance: none;
  border: 1px solid rgba(201, 184, 232, 0.3);
  border-radius: 999px;
  padding: 11px 20px;
  font-family: inherit;
  font-weight: 700;
  font-size: 14px;
  color: var(--ink-dim);
  background: transparent;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.btn-ghost:hover { border-color: var(--luna-pink); color: var(--ink); }

.btn-primary:focus-visible, .btn-ghost:focus-visible { outline: 2px solid var(--moon-gold); outline-offset: 3px; }

/* ---------- ジョイスティック ---------- */
#joystick {
  position: fixed;
  left: 50%;
  bottom: calc(34px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  width: 132px;
  height: 132px;
  z-index: 15;
  touch-action: none;
  cursor: grab;
}

.stick-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 32%, rgba(255, 216, 122, 0.14), rgba(42, 27, 82, 0.4));
  border: 1.5px solid rgba(255, 216, 122, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 6px 26px rgba(4, 2, 18, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.09);
}

.stick-knob {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle at 35% 28%, #fff3cf, var(--moon-gold) 55%, var(--moon-amber));
  border: 2px solid rgba(255, 246, 214, 0.65);
  box-shadow: 0 3px 16px rgba(255, 185, 74, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  pointer-events: none;
}

/* ---------- 被ダメージフラッシュ ---------- */
#hit-flash {
  position: fixed;
  inset: 0;
  z-index: 12;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(ellipse at center, transparent 42%, rgba(255, 77, 94, 0.55) 100%);
}

#hit-flash.flash { animation: hitflash 0.45s ease-out; }

@keyframes hitflash {
  0% { opacity: 1; }
  100% { opacity: 0; }
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 820px) {
  .diff-grid { grid-template-columns: repeat(2, minmax(150px, 190px)); }
}

@media (max-width: 400px) {
  .diff-grid { grid-template-columns: minmax(0, 260px); gap: 10px; }
  .diff-card { flex-direction: row; text-align: left; padding: 12px 16px; gap: 12px; }
  .diff-card .moon-icon { width: 40px; height: 40px; flex-shrink: 0; }
  .diff-card .diff-desc { display: none; }
  .diff-name { font-size: 16px; }
  .sp-only { display: inline; }
}

@media (max-width: 640px) {
  .hud-title { display: none; }
  .stat { min-width: 52px; padding: 3px 7px 4px; }
  .stat-value { font-size: 15px; }
}

@media (prefers-reduced-motion: reduce) {
  .diff-card, .btn-primary, .btn-ghost { transition: none; }
  #hit-flash.flash { animation-duration: 0.01s; }
}