:root {
  --bg: #05070a;
  --panel: #0d131b;
  --panel-2: #111a24;
  --line: rgba(148, 180, 220, 0.13);
  --text: #e9f0f8;
  --muted: #8b9aac;
  --gold: #ffc857;
  --gold-2: #ff9f1c;
  --cyan: #63e6ff;
  --danger: #ff5d5d;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20px;
  color: var(--text);
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif;
  background:
    radial-gradient(900px 560px at 78% -12%, rgba(255, 140, 66, 0.14), transparent 62%),
    radial-gradient(760px 520px at 4% 112%, rgba(99, 230, 255, 0.09), transparent 60%),
    var(--bg);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(148, 180, 220, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 180, 220, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 45%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 45%, #000 20%, transparent 78%);
}

.app {
  position: relative;
  z-index: 1;
  width: min(900px, 100%);
  margin: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  position: relative;
  width: 46px;
  height: 46px;
  flex: none;
  border-radius: 13px;
  background: linear-gradient(145deg, #1a2431, #0b1016);
  border: 1px solid rgba(255, 200, 87, 0.35);
  box-shadow: 0 8px 24px -10px rgba(255, 180, 60, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 3px;
  padding: 10px;
}

.brand-mark span {
  width: 6px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold), #b97a0a);
  box-shadow: 0 0 10px rgba(255, 200, 87, 0.45);
  animation: bars 1.4s ease-in-out infinite;
}

.brand-mark span:nth-child(1) { height: 14px; animation-delay: 0s; }
.brand-mark span:nth-child(2) { height: 22px; animation-delay: 0.15s; }
.brand-mark span:nth-child(3) { height: 10px; animation-delay: 0.3s; }

@keyframes bars {
  0%, 100% { transform: scaleY(1); opacity: 0.75; }
  50% { transform: scaleY(0.55); opacity: 1; }
}

.brand-text h1 {
  margin: 0;
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 800;
  letter-spacing: 0.05em;
  line-height: 1.15;
  white-space: nowrap;
}

.brand-text h1 em {
  font-style: normal;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.32em;
  color: var(--gold);
  vertical-align: middle;
  margin-left: 8px;
  opacity: 0.9;
}

.brand-text p {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.top-actions { display: flex; gap: 8px; }

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
  color: var(--text);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color 0.18s, transform 0.18s, background 0.18s;
}

.icon-btn:hover {
  border-color: rgba(255, 200, 87, 0.5);
  background: rgba(255, 200, 87, 0.08);
  transform: translateY(-1px);
}

.icon-btn:active { transform: translateY(0) scale(0.96); }

/* ---------- 游戏区域 ---------- */
.game-shell {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
}

.stage {
  position: relative;
  flex: 1 1 auto;
  width: 100%;
  max-width: min(600px, calc(100vh - 250px));
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  overflow: hidden;
  background: #05080c;
  border: 1px solid rgba(148, 180, 220, 0.2);
  box-shadow:
    0 30px 70px -24px rgba(0, 0, 0, 0.95),
    0 0 0 1px rgba(0, 0, 0, 0.6),
    inset 0 0 60px rgba(20, 40, 70, 0.25);
}

.stage::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.55);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent 12%);
}

#game {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

/* ---------- 遮罩层 ---------- */
.overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: radial-gradient(circle at 50% 42%, rgba(12, 19, 28, 0.74), rgba(3, 5, 8, 0.94));
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  opacity: 1;
  transition: opacity 0.28s ease;
}

.overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.overlay-card {
  text-align: center;
  max-width: 340px;
  animation: rise 0.4s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.overlay-kicker {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
  text-shadow: 0 0 18px rgba(255, 200, 87, 0.5);
}

.overlay-card h2 {
  margin: 0 0 12px;
  font-size: clamp(30px, 6vw, 44px);
  line-height: 1.1;
  letter-spacing: 0.06em;
  font-weight: 900;
  background: linear-gradient(180deg, #ffffff 10%, #ffe4a8 60%, #ffb32c 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 4px 18px rgba(255, 170, 40, 0.35));
}

.overlay-card p {
  margin: 0 0 22px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.primary-btn {
  border: 0;
  cursor: pointer;
  padding: 13px 32px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #241703;
  background: linear-gradient(180deg, #ffe08a, var(--gold) 45%, var(--gold-2));
  box-shadow:
    0 10px 26px -8px rgba(255, 160, 30, 0.75),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
  transition: transform 0.16s, box-shadow 0.16s, filter 0.16s;
}

.primary-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.06);
  box-shadow:
    0 16px 32px -10px rgba(255, 160, 30, 0.9),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.primary-btn:active { transform: translateY(0) scale(0.98); }

.overlay-hint {
  margin: 16px 0 0 !important;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: #627287;
}

/* ---------- 侧边面板 ---------- */
.panel {
  flex: none;
  width: 190px;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent 40%),
    linear-gradient(180deg, var(--panel), #0a0f15);
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 24px 50px -26px rgba(0, 0, 0, 0.9);
}

.stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.stat.block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.label {
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  white-space: nowrap;
}

.stat strong {
  font-family: "Cascadia Mono", "Consolas", ui-monospace, monospace;
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}

.enemies-count { color: var(--gold) !important; }

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.icons {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  min-height: 14px;
}

.life-ico {
  width: 14px;
  height: 12px;
  border-radius: 3px;
  background: linear-gradient(180deg, #ffe08a, var(--gold) 55%, #c88712);
  box-shadow: 0 0 10px rgba(255, 200, 87, 0.4);
  position: relative;
}

.life-ico::after {
  content: "";
  position: absolute;
  left: 50%;
  top: -3px;
  width: 3px;
  height: 5px;
  transform: translateX(-50%);
  border-radius: 1px;
  background: #ffab24;
}

.star {
  font-size: 14px;
  line-height: 1;
  color: #2b3644;
  transition: color 0.2s, text-shadow 0.2s;
}

.star.on {
  color: var(--gold);
  text-shadow: 0 0 10px rgba(255, 200, 87, 0.8);
}

.legend {
  margin-top: auto;
  padding-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.legend span { display: flex; align-items: center; gap: 7px; }

.dot {
  width: 7px;
  height: 7px;
  border-radius: 2px;
  flex: none;
}

.dot.basic { background: #9fb3c8; }
.dot.fast { background: #ff9f43; }
.dot.power { background: #ef5b5b; }
.dot.armor { background: #a06ee1; }

/* ---------- 页脚 ---------- */
.help {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  font-size: 11.5px;
  color: var(--muted);
  padding: 0 4px;
}

.help .tip { margin-left: auto; color: #64758a; }

kbd {
  display: inline-block;
  min-width: 20px;
  padding: 2px 6px;
  margin-right: 3px;
  border-radius: 5px;
  border: 1px solid rgba(148, 180, 220, 0.22);
  border-bottom-width: 2px;
  background: rgba(255, 255, 255, 0.04);
  color: #c7d3e2;
  font-family: inherit;
  font-size: 10.5px;
  text-align: center;
}

/* ---------- 触屏操作 ---------- */
.touch {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 4px 10px 0;
  touch-action: none;
}

.dpad {
  display: grid;
  grid-template-columns: repeat(3, 54px);
  grid-template-rows: repeat(2, 54px);
  gap: 6px;
}

.dpad button {
  border-radius: 14px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
  color: var(--text);
  font-size: 16px;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.dpad button[data-dir="up"] { grid-column: 2; grid-row: 1; }
.dpad button[data-dir="left"] { grid-column: 1; grid-row: 2; }
.dpad button[data-dir="down"] { grid-column: 2; grid-row: 2; }
.dpad button[data-dir="right"] { grid-column: 3; grid-row: 2; }

.dpad button:active,
.dpad button.pressed {
  background: rgba(255, 200, 87, 0.18);
  border-color: rgba(255, 200, 87, 0.6);
}

.fire {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  border: 1px solid rgba(255, 200, 87, 0.45);
  background:
    radial-gradient(circle at 50% 38%, rgba(255, 224, 138, 0.95), var(--gold) 45%, var(--gold-2) 100%);
  color: #241703;
  font-family: inherit;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.12em;
  box-shadow: 0 12px 30px -10px rgba(255, 160, 30, 0.85);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.fire:active,
.fire.pressed { transform: scale(0.95); filter: brightness(0.92); }

button:focus-visible {
  outline: 2px solid rgba(99, 230, 255, 0.7);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (pointer: coarse) {
  .touch { display: flex; }
  .help { display: none; }
}

@media (max-width: 760px) {
  body { padding: 12px; align-items: flex-start; }
  .app { gap: 12px; }
  .brand-text p { display: none; }
  .brand-mark { width: 40px; height: 40px; }
  .game-shell { flex-direction: column; align-items: stretch; gap: 12px; }
  .stage { width: 100%; max-width: 100%; }
  .panel {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 20px;
    padding: 12px 14px;
  }
  .panel .divider, .panel .legend { display: none; }
  .stat { flex: 1 1 auto; justify-content: flex-start; gap: 10px; }
  .stat.block { flex: 0 1 auto; }
  .stat strong { font-size: 16px; }
  .help { font-size: 10.5px; gap: 6px 12px; }
  .help .tip { display: none; }
}

@media (max-width: 560px) {
  .brand { gap: 10px; }
  .brand-text h1 em { display: none; }
  .top-actions { gap: 6px; }
  .icon-btn { width: 38px; height: 38px; border-radius: 11px; }
}