/* =========================================================
   萃猫大战阿迪王 — modern minimal UI
   Cool monochrome dark palette + a single restrained accent.
   ========================================================= */

:root {
  --bg-deep:   #07080c;
  --bg-mid:    #0f121a;
  --bg-soft:   #161a26;
  --border:    rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --fg:        #f5f6fa;
  --fg-soft:   rgba(245, 246, 250, 0.62);
  --fg-mute:   rgba(245, 246, 250, 0.40);
  --accent:    #5fa8ff;          /* cool electric blue */
  --accent-2:  #b8d4ff;
  --player:    #f8fafc;
  --enemy:     #ef4444;
  --warn:      #f59e0b;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; width: 100%; background: var(--bg-deep); color: var(--fg);
  font-family: "Inter", "Noto Sans SC", "PingFang SC", system-ui, sans-serif;
  font-weight: 400; overflow: hidden; user-select: none;
  -webkit-tap-highlight-color: transparent; }
#app { position: relative; width: 100%; height: 100%; overflow: hidden; }

.screen { position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 56px; padding: 32px; }
.hidden { display: none !important; }

kbd { display: inline-flex; align-items: center; justify-content: center;
  min-width: 28px; height: 26px; padding: 0 8px;
  font-family: "JetBrains Mono", "SF Mono", ui-monospace, monospace; font-size: 11px;
  color: var(--fg); background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-strong); border-radius: 6px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.06) inset, 0 1px 2px rgba(0,0,0,0.4);
  letter-spacing: 0.05em; }

/* ---------- Brand / title block ---------- */
.brand { text-align: center; display: flex; flex-direction: column; gap: 12px;
  align-items: center; }
.brand-tag { font-size: 11px; letter-spacing: 0.55em; color: var(--accent);
  font-family: "JetBrains Mono", ui-monospace, monospace; }
.title-loading, .title { font-size: clamp(48px, 7vw, 96px);
  font-weight: 800; letter-spacing: 0.08em; color: var(--fg);
  text-shadow: 0 0 60px rgba(95, 168, 255, 0.18); }
.tagline { font-size: 12px; letter-spacing: 0.45em; color: var(--fg-mute);
  font-family: "JetBrains Mono", ui-monospace, monospace; }

/* ---------- Loading screen ---------- */
#loading { background:
  radial-gradient(ellipse at 50% 30%, rgba(95,168,255,0.10), transparent 55%),
  linear-gradient(180deg, #0b0e16 0%, #07080c 100%); }
.loader { width: min(420px, 78vw); display: flex; flex-direction: column; gap: 10px; }
.progress { height: 2px; background: rgba(255,255,255,0.06); overflow: hidden; }
.progress-bar { height: 100%; width: 0%; background: var(--accent);
  transition: width 0.18s ease; }
.loader-row { display: flex; justify-content: space-between;
  font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 11px;
  letter-spacing: 0.35em; color: var(--fg-mute); }

/* ---------- Title screen ---------- */
#title { background:
  radial-gradient(ellipse at 50% 25%, rgba(95,168,255,0.10), transparent 55%),
  radial-gradient(ellipse at 50% 85%, rgba(239,68,68,0.06), transparent 50%),
  linear-gradient(180deg, #0b0e16 0%, #07080c 100%); }

.primary-btn { display: inline-flex; align-items: center; gap: 14px;
  padding: 14px 32px; font-family: inherit;
  font-size: 15px; font-weight: 600; letter-spacing: 0.18em;
  color: var(--fg); background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-strong); border-radius: 999px; cursor: pointer;
  transition: all 0.18s ease;
  text-transform: uppercase;
  font-feature-settings: "cv11" on; }
.primary-btn .btn-arrow { font-family: "JetBrains Mono", monospace;
  color: var(--accent); transition: transform 0.18s ease; }
.primary-btn:hover { border-color: var(--accent); background: rgba(95,168,255,0.08);
  transform: translateY(-1px); }
.primary-btn:hover .btn-arrow { transform: translateX(3px); }
.primary-btn:active { transform: translateY(0); }

.controls-hint { width: min(640px, 86vw); background: rgba(255,255,255,0.02);
  border: 1px solid var(--border); border-radius: 16px;
  padding: 22px 28px; backdrop-filter: blur(12px); }
.controls-hint h3 { font-size: 11px; letter-spacing: 0.45em; margin-bottom: 18px;
  color: var(--fg-mute); font-family: "JetBrains Mono", monospace; font-weight: 500; }
.key-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 32px;
  font-size: 13px; color: var(--fg-soft); }
.key-grid > div { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.key-grid span { color: var(--fg-soft); margin-left: 4px; }
.key-grid .span2 { grid-column: span 2; }

/* ---------- Arena (gameplay) ---------- */
/* Canvas fills the whole viewport; HUD floats on top. */
#arena { background: #000; padding: 0; gap: 0;
  align-items: stretch; justify-content: stretch; }
#game { position: absolute; inset: 0; width: 100vw; height: 100vh;
  display: block; background: #000; }

.hud { position: absolute; top: 0; left: 0; right: 0; z-index: 5;
  padding: 18px 28px 14px;
  display: grid; grid-template-columns: 1fr 132px 1fr;
  align-items: center; gap: 22px;
  background: linear-gradient(180deg, rgba(7,8,12,0.78) 0%, rgba(7,8,12,0.0) 100%);
  pointer-events: none; }
.hud-side { display: flex; flex-direction: column; gap: 6px; }
.hud-right { align-items: flex-end; }
.fighter-row { display: flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: 0.12em; }
.fighter-tag { font-family: "JetBrains Mono", monospace; font-size: 10px;
  letter-spacing: 0.2em; padding: 2px 6px; border-radius: 4px;
  border: 1px solid var(--border-strong); color: var(--fg-mute); }
.fighter-name { font-weight: 600; }
.hp-bar { width: 100%; height: 6px; background: rgba(255,255,255,0.06);
  border-radius: 1px; overflow: hidden; position: relative;
  border: 1px solid var(--border); }
.hp-bar.reverse .hp-fill { float: right; }
.hp-bar.reverse { transform: scaleX(-1); }
.hp-fill { height: 100%; width: 100%; transition: width 0.18s ease;
  border-radius: 0; }
.hp-fill.player { background: var(--player); }
.hp-fill.enemy { background: var(--enemy); }
.round-info { text-align: center; }
.timer { font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 38px; font-weight: 700; color: var(--fg);
  font-variant-numeric: tabular-nums; line-height: 1; }
.round-label { font-size: 9px; letter-spacing: 0.4em; color: var(--fg-mute);
  margin-top: 4px; font-family: "JetBrains Mono", monospace; }

.combo-row { position: absolute; left: 0; right: 0; bottom: 0; z-index: 5;
  padding: 14px 28px 22px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 11px; letter-spacing: 0.18em;
  color: var(--fg-mute);
  background: linear-gradient(0deg, rgba(7,8,12,0.78) 0%, rgba(7,8,12,0.0) 100%);
  font-family: "JetBrains Mono", monospace;
  pointer-events: none; }
.combo-hint { color: var(--accent-2); min-height: 14px; }
.special-meter span { color: var(--accent); }

.overlay { position: absolute; inset: 0; background: rgba(7, 8, 12, 0.86);
  display: flex; align-items: center; justify-content: center; z-index: 10;
  backdrop-filter: blur(4px); }
.pause-card { padding: 32px 48px; text-align: center;
  border: 1px solid var(--border-strong); border-radius: 12px;
  background: rgba(255,255,255,0.02); }
.pause-card h2 { font-size: 26px; letter-spacing: 0.4em;
  color: var(--fg); font-weight: 700; margin-bottom: 8px; }
.pause-card p { font-size: 12px; color: var(--fg-mute); letter-spacing: 0.12em; }

/* ---------- Result screen ---------- */
#result { background:
  radial-gradient(ellipse at 50% 50%, rgba(95,168,255,0.10), transparent 55%),
  linear-gradient(180deg, #0b0e16 0%, #07080c 100%); }
.result-card { width: min(720px, 88vw);
  background: rgba(255,255,255,0.02); border: 1px solid var(--border);
  border-radius: 20px; padding: 32px 40px;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
  backdrop-filter: blur(12px); }
.result-tag { font-family: "JetBrains Mono", monospace; font-size: 11px;
  letter-spacing: 0.55em; color: var(--accent); }
.result-card h1 { font-size: clamp(56px, 6vw, 88px); font-weight: 800;
  letter-spacing: 0.06em; color: var(--fg); }
.result-image { max-width: min(560px, 80vw); max-height: 46vh;
  border-radius: 10px; border: 1px solid var(--border);
  box-shadow: 0 20px 48px rgba(0,0,0,0.55); }