:root {
  color-scheme: dark;
  font-family: "Outfit", "Noto Sans TC", system-ui, sans-serif;
  --bg: #07130f;
  --panel: rgba(14, 36, 30, 0.92);
  --panel-2: rgba(23, 55, 45, 0.9);
  --line: rgba(165, 232, 188, 0.24);
  --gold: #f8d66a;
  --mint: #67f2be;
  --text: #f7fff7;
  --muted: #b9d3c4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100svh;
  background: radial-gradient(circle at top, #194d3e 0, #07130f 48%, #050807 100%);
  color: var(--text);
  overflow-y: auto;
}

button,
select {
  font: inherit;
}

.rune-app {
  width: min(100%, 980px);
  min-height: 100svh;
  margin: 0 auto;
  padding: max(12px, env(safe-area-inset-top)) 14px max(18px, env(safe-area-inset-bottom));
}

.topbar {
  display: grid;
  grid-template-columns: 58px 1fr minmax(132px, 190px);
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.back-btn,
.primary-btn,
.secondary-btn,
.actions button,
.diamond-card button {
  border: 0;
  cursor: pointer;
  touch-action: manipulation;
}

.back-btn {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 16px;
  color: #261907;
  text-decoration: none;
  font-size: 2rem;
  font-weight: 900;
  background: linear-gradient(#fff6a8, #f6a51f);
  box-shadow: 0 8px 0 #8a551b;
}

.brand span,
.locale span,
.hud span,
.profile-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.brand h1 {
  margin: 2px 0 0;
  font-size: clamp(1.2rem, 4.4vw, 2rem);
  line-height: 1.1;
}

.locale {
  display: grid;
  gap: 4px;
}

.locale select {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  background: rgba(4, 18, 15, 0.86);
  padding: 0 8px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(160deg, rgba(19, 49, 39, 0.94), rgba(7, 20, 18, 0.94));
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.32);
}

.is-hidden {
  display: none !important;
}

.menu-panel {
  display: grid;
  grid-template-columns: minmax(240px, 38%) 1fr;
  gap: 18px;
  padding: 18px;
}

.cover {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--line);
}

.menu-copy {
  display: grid;
  align-content: start;
  gap: 14px;
}

.menu-copy > strong {
  font-size: clamp(1.5rem, 4vw, 2.3rem);
}

.menu-copy > span,
.status-line,
.section-head small,
.diamond-card small {
  color: var(--muted);
  line-height: 1.45;
}

.profile-grid,
.hud {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.profile-grid > div,
.hud > div,
.selected-card,
.diamond-card,
.section-head,
.reward-card,
.skill-report {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.055);
  padding: 12px;
}

.profile-grid b,
.hud b {
  display: flex;
  align-items: center;
  gap: 5px;
  min-height: 28px;
  color: var(--gold);
  font-size: 1.15rem;
}

.hud img,
.diamond-card img,
.secondary-btn img {
  width: 20px;
  height: 20px;
}

.mission-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 8px;
}

.mission-card {
  display: grid;
  align-content: start;
  gap: 5px;
  min-height: 108px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  background: rgba(11, 40, 31, 0.72);
  padding: 10px;
  text-align: left;
}

.mission-card small,
.mission-card span {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.25;
}

.mission-card em {
  display: block;
  color: #f7dc88;
  font-size: 0.76rem;
  font-style: normal;
  font-weight: 800;
  line-height: 1.25;
}

.mission-card.is-active {
  border-color: var(--gold);
  box-shadow: inset 0 0 0 2px rgba(248, 214, 106, 0.25);
}

.mission-card:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.diamond-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.hero-upgrade-list {
  display: grid;
  gap: 8px;
}

.hero-upgrade-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.hero-upgrade-card {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.055);
  padding: 9px;
}

.hero-upgrade-card img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.hero-upgrade-card strong,
.hero-upgrade-card span {
  display: block;
}

.hero-upgrade-card span {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.25;
}

.hero-upgrade-card button {
  grid-column: 1 / -1;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: #102317;
  background: linear-gradient(135deg, #89ffc1, #f8d66a);
  font-weight: 900;
}

.diamond-card button,
.primary-btn,
.secondary-btn {
  min-height: 48px;
  border-radius: 13px;
  font-weight: 900;
}

.diamond-card button,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid var(--line);
}

.primary-btn {
  color: #102317;
  background: linear-gradient(135deg, #89ffc1, #f8d66a);
}

.game-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  align-items: stretch;
  gap: 12px;
  padding: 12px;
}

.game-panel > .hud {
  grid-column: 1 / -1;
}

.battle-shell {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(248, 214, 106, 0.42);
  border-radius: 18px;
  background: #152820;
}

.arena-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tactic-grid {
  position: absolute;
  inset: 8%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 8px;
}

.tile {
  position: relative;
  border: 2px solid rgba(210, 255, 220, 0.22);
  border-radius: 12px;
  background: rgba(12, 54, 40, 0.16);
  min-width: 0;
}

.tile.is-move {
  border-color: rgba(103, 242, 190, 0.85);
  background: rgba(103, 242, 190, 0.15);
}

.tile.is-attack {
  border-color: rgba(255, 205, 87, 0.95);
  background: rgba(255, 205, 87, 0.16);
}

.tile.is-selected {
  box-shadow: inset 0 0 0 3px rgba(248, 214, 106, 0.55);
}

.tile.is-acted {
  border-color: rgba(165, 232, 188, 0.16);
  background: rgba(2, 8, 7, 0.38);
}

.unit {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(86%, 74px);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  object-fit: contain;
  filter: drop-shadow(0 8px 9px rgba(0, 0, 0, 0.45));
  pointer-events: none;
}

.hpbar {
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: 4px;
  height: 7px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.45);
}

.hpbar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #5dff9b, #f8d66a);
}

.enemy .hpbar span {
  background: linear-gradient(90deg, #ff5d5d, #ffbf61);
}

.hero.has-acted .unit {
  opacity: 0.48;
  filter: grayscale(0.4) drop-shadow(0 5px 7px rgba(0, 0, 0, 0.35));
}

.turn-badge {
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  padding: 2px 7px;
  border-radius: 999px;
  color: #102317;
  background: var(--gold);
  font-style: normal;
  font-size: 0.66rem;
  font-weight: 900;
  white-space: nowrap;
  pointer-events: none;
}

.hero.has-acted .turn-badge {
  color: #e2f5e9;
  background: rgba(12, 25, 21, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.fx-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.fx {
  position: absolute;
  width: 110px;
  height: 110px;
  object-fit: contain;
  transform: translate(-50%, -50%) scale(0.55);
  animation: fx-pop 560ms ease-out forwards;
}

@keyframes fx-pop {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.35); }
  35% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1.1); }
}

.battle-info {
  display: grid;
  align-content: start;
  gap: 10px;
}

.selected-card {
  min-height: 70px;
  display: grid;
  gap: 6px;
  line-height: 1.35;
}

.selected-card span,
.selected-card small {
  color: var(--muted);
}

.actions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.actions button {
  min-height: 48px;
  border-radius: 12px;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
  font-weight: 900;
}

.actions button:disabled {
  opacity: 0.45;
}

.battle-log {
  min-height: 28px;
  margin: 0;
  color: #d8ffe5;
  text-align: center;
}

.overlay-panel {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(1, 7, 5, 0.74);
}

.overlay-card {
  width: min(100%, 620px);
  max-height: calc(100svh - 36px);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #10241e;
  padding: 18px;
}

.reward-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.reward-card {
  display: grid;
  gap: 8px;
  color: var(--text);
  text-align: left;
  min-height: 172px;
}

.reward-card img {
  width: 64px;
  height: 64px;
  object-fit: contain;
}

.result-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 14px;
}

@media (max-width: 720px) {
  .rune-app {
    padding-inline: 10px;
  }

  .topbar {
    grid-template-columns: 50px 1fr;
  }

  .locale {
    grid-column: 1 / -1;
  }

  .menu-panel {
    grid-template-columns: 1fr;
  }

  .cover {
    max-width: 280px;
    margin: 0 auto;
  }

  .battle-shell {
    aspect-ratio: 3 / 4;
  }

  .game-panel {
    display: block;
  }

  .game-panel .battle-shell {
    margin: 12px auto;
  }

  .tactic-grid {
    inset: 6%;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 6px;
  }

  .actions,
  .reward-cards,
  .result-actions {
    grid-template-columns: 1fr 1fr;
  }

  .profile-grid,
  .hud {
    grid-template-columns: 1fr 1fr;
  }

  .hero-upgrade-grid {
    grid-template-columns: 1fr;
  }

  .mission-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}