:root {
  --bg: #07131f;
  --bg-2: #0b1d2e;
  --panel: rgba(13, 32, 50, 0.82);
  --panel-border: rgba(84, 190, 255, 0.18);
  --text: #e8f3fb;
  --muted: #8fa9bf;
  --cyan: #19d3ff;
  --green: #16c79a;
  --blue: #1f6bff;
  --danger: #ff5470;
  --warn: #ffc94a;
  --radius: 16px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; overflow-x: hidden; }

body {
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(25, 211, 255, 0.14), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(22, 199, 154, 0.12), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, #050d16 100%);
  color: var(--text);
  -webkit-tap-highlight-color: transparent;
}

button, input { font: inherit; color: inherit; }

button {
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 10px 16px;
  font-weight: 600;
  transition: transform .12s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
button:active { transform: translateY(1px) scale(.99); }
button:focus-visible, input:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.primary {
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: #03101c;
  box-shadow: 0 8px 24px rgba(25, 211, 255, 0.25);
}
.primary:hover { box-shadow: 0 10px 30px rgba(25, 211, 255, 0.4); }
.secondary {
  background: linear-gradient(135deg, var(--green), #0b8f72);
  color: #03140f;
  box-shadow: 0 8px 24px rgba(22, 199, 154, 0.22);
}
.ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
}
.ghost:hover { background: rgba(255, 255, 255, 0.09); border-color: rgba(25, 211, 255, 0.4); }
.ghost.danger:hover { border-color: var(--danger); color: #ffd6dd; }

.hidden { display: none !important; }

.app-shell {
  max-width: 1320px;
  margin: 0 auto;
  padding: 18px 16px 28px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.topbar h1 {
  margin: 2px 0 0;
  font-size: clamp(1.25rem, 2.4vw, 1.9rem);
  letter-spacing: .01em;
}
.top-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.eyebrow {
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--cyan);
  font-weight: 700;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

/* ===== Setup ===== */
.setup-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 24px;
  padding: 24px;
}

.setup-copy h2 { margin: 12px 0 8px; font-size: clamp(1.3rem, 2.6vw, 2rem); line-height: 1.15; }
.setup-copy p { color: var(--muted); line-height: 1.55; margin: 0 0 18px; }

.chip {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(22, 199, 154, 0.14);
  border: 1px solid rgba(22, 199, 154, 0.45);
  color: #7ff5d2;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
}

.field-label { display: block; font-size: .8rem; color: var(--muted); margin-bottom: 6px; }
#playerName {
  width: 100%;
  max-width: 320px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.25);
}

.section-title {
  margin: 20px 0 10px;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}
.section-title.compact { margin: 0 0 2px; }

.skin-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }

.skin-card, .boss-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  padding: 10px;
  text-align: center;
}
.skin-card canvas, .boss-card canvas { width: 100%; height: auto; display: block; }
.skin-card strong { font-size: .95rem; }
.skin-card small { color: var(--muted); font-weight: 500; line-height: 1.35; }
.skin-card:hover, .boss-card:hover { border-color: rgba(25, 211, 255, 0.45); }
.skin-card.selected {
  border-color: var(--skin-accent, var(--cyan));
  background: color-mix(in srgb, var(--skin-accent, var(--cyan)) 12%, transparent);
  box-shadow: 0 0 0 1px var(--skin-accent, var(--cyan)) inset;
}

.mode-row { display: flex; gap: 10px; flex-wrap: wrap; }
.mode-row button { flex: 1 1 200px; padding: 14px 16px; font-size: 1rem; }

.boss-panel { min-width: 0; }
.boss-panel-head { display: flex; justify-content: space-between; align-items: end; margin-bottom: 12px; }
.boss-panel-head h3 { margin: 0; font-size: 1.2rem; }
.counter {
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  color: var(--cyan);
  background: rgba(25, 211, 255, 0.08);
  border: 1px solid rgba(25, 211, 255, 0.3);
  padding: 4px 10px;
  border-radius: 999px;
}

.boss-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 8px; }
.boss-card { padding: 6px 4px 8px; }
.boss-card span { font-size: .72rem; font-weight: 700; line-height: 1.2; }
.boss-card .num { font-size: .62rem; color: var(--muted); letter-spacing: .1em; }
.boss-card.selected {
  border-color: var(--boss-accent, var(--danger));
  background: color-mix(in srgb, var(--boss-accent, var(--danger)) 14%, transparent);
}

.boss-info {
  margin-top: 14px;
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 4px solid var(--boss-accent, var(--danger));
}
.boss-info h4 { margin: 0 0 2px; font-size: 1.15rem; }
.boss-info .stage { color: var(--muted); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; }
.boss-info p { margin: 10px 0 0; line-height: 1.5; color: #cfe0ec; font-size: .92rem; }
.boss-info dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 12px 0 0; font-size: .85rem; }
.boss-info dt { color: var(--muted); font-weight: 700; }
.boss-info dd { margin: 0; }
.move-list { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
.move-list span {
  font-size: .75rem;
  padding: 4px 8px;
  border-radius: 8px;
  background: rgba(255, 84, 112, 0.12);
  border: 1px solid rgba(255, 84, 112, 0.35);
  color: #ffc6cf;
}

/* ===== Arena ===== */
.arena-section { display: flex; flex-direction: column; gap: 12px; }
.arena-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
}
.arena-actions { display: flex; gap: 8px; }

.canvas-wrap {
  position: relative;
  padding: 8px;
  display: flex;
  justify-content: center;
  overflow: hidden;
}
#game {
  display: block;
  width: min(100%, calc((100vh - 150px) * 16 / 9));
  width: min(100%, calc((100dvh - 150px) * 16 / 9));
  aspect-ratio: 16 / 9;
  height: auto;
  border-radius: 10px;
  background: #02070d;
  touch-action: none;
}

.message-overlay {
  position: absolute;
  inset: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(3, 10, 18, 0.72);
  backdrop-filter: blur(3px);
  border-radius: 10px;
  overflow: auto;
}
.overlay-card {
  width: min(640px, 100%);
  max-height: 100%;
  overflow: auto;
  background: linear-gradient(180deg, rgba(13, 32, 50, 0.96), rgba(7, 19, 31, 0.96));
  border: 1px solid var(--panel-border);
  border-top: 4px solid var(--accent, var(--cyan));
  border-radius: 16px;
  padding: 22px 24px;
  box-shadow: var(--shadow);
}
.overlay-card h2 { margin: 6px 0 4px; font-size: clamp(1.2rem, 2.6vw, 1.8rem); }
.overlay-card h3 { margin: 16px 0 6px; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.overlay-card p { margin: 6px 0; line-height: 1.5; color: #cfe0ec; }
.overlay-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.overlay-actions button { flex: 1 1 160px; }

.brief-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 12px; }
.brief-grid div {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: .88rem;
  line-height: 1.45;
}
.brief-grid b { display: block; font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent, var(--cyan)); margin-bottom: 4px; }

.score-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; margin-top: 8px; }
.score-table td { padding: 5px 0; border-bottom: 1px dashed rgba(255, 255, 255, 0.08); }
.score-table td:last-child { text-align: right; font-weight: 700; }
.score-table tr.total td { border-bottom: 0; font-size: 1.15rem; color: var(--accent, var(--cyan)); padding-top: 10px; }

/* ===== Touch ===== */
.touch-controls {
  display: none;
  justify-content: space-between;
  gap: 12px;
  user-select: none;
  -webkit-user-select: none;
}
.touch-group { display: flex; gap: 8px; }
.touch-group button {
  min-width: 58px;
  min-height: 58px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 1rem;
  touch-action: none;
}
.touch-group button.on { background: rgba(25, 211, 255, 0.3); border-color: var(--cyan); }
.touch-group.attacks button:nth-child(3) { background: rgba(22, 199, 154, 0.2); border-color: rgba(22, 199, 154, 0.6); }

@media (pointer: coarse), (max-width: 820px) {
  .touch-controls { display: flex; }
}
@media (max-width: 820px) {
  .message-overlay { position: fixed; inset: 0; z-index: 50; border-radius: 0; align-items: flex-start; padding-top: 24px; }
}

/* ===== Modal ===== */
.modal {
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--text);
  max-width: min(640px, calc(100vw - 32px));
  width: 100%;
}
.modal::backdrop { background: rgba(2, 8, 14, 0.7); backdrop-filter: blur(3px); }
.modal-card {
  position: relative;
  background: linear-gradient(180deg, #0f2438, #081624);
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow);
  max-height: calc(100vh - 64px);
  overflow: auto;
}
.modal-card h2 { margin-top: 0; }
.modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 38px;
  height: 38px;
  padding: 0;
  font-size: 1.4rem;
  line-height: 1;
  background: rgba(255, 255, 255, 0.06);
}
.keys { display: grid; grid-template-columns: auto 1fr; gap: 8px 14px; align-items: center; }
kbd {
  display: inline-block;
  min-width: 28px;
  padding: 3px 8px;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom-width: 3px;
  font-family: inherit;
  font-size: .82rem;
  font-weight: 700;
  text-align: center;
}
.rank-list { list-style: none; padding: 0; margin: 0; counter-reset: rank; }
.rank-list li {
  counter-increment: rank;
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 9px 10px;
  border-radius: 10px;
}
.rank-list li:nth-child(odd) { background: rgba(255, 255, 255, 0.03); }
.rank-list li::before { content: counter(rank); font-weight: 800; color: var(--muted); text-align: center; }
.rank-list li:nth-child(1)::before { color: #ffd76a; }
.rank-list li:nth-child(2)::before { color: #d8e3ec; }
.rank-list li:nth-child(3)::before { color: #e0a36b; }
.rank-list small { display: block; color: var(--muted); font-size: .75rem; }
.rank-list b { font-variant-numeric: tabular-nums; }
.tabs { display: flex; gap: 6px; margin-bottom: 12px; flex-wrap: wrap; }
.tabs button { padding: 6px 12px; font-size: .85rem; }
.tabs button.active { border-color: var(--cyan); background: rgba(25, 211, 255, 0.14); }
.muted { color: var(--muted); }

@media (max-width: 1020px) {
  .setup-grid { grid-template-columns: 1fr; }
  .boss-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .app-shell { padding: 12px 10px 20px; }
  .setup-grid { padding: 16px; }
  .topbar { flex-direction: column; align-items: flex-start; }
  .brief-grid { grid-template-columns: 1fr; }
  .touch-controls { flex-wrap: wrap; gap: 8px; }
  .touch-group { flex: 1 1 100%; gap: 6px; }
  .touch-group button { flex: 1 1 0; min-width: 0; min-height: 54px; padding: 8px 4px; font-size: .9rem; }
  .arena-head { padding: 8px 10px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}