:root {
  --bg: #070b14;
  --panel: rgba(16, 24, 38, 0.88);
  --cyan: #3dfff2;
  --cyan-dim: rgba(61, 255, 242, 0.35);
  --pink: #ff3d8a;
  --orange: #ff5a36;
  --gold: #ffd56a;
  --text: #e8f1ff;
  --muted: #8ba0c4;
  --cut: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
  --cut-sm: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: Bahnschrift, "Segoe UI", "Microsoft YaHei", sans-serif;
  overflow: hidden;
  user-select: none;
}
button, input { font-family: inherit; }

#layout {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  background:
    radial-gradient(900px 500px at 50% 40%, rgba(61, 255, 242, 0.05), transparent 60%),
    var(--bg);
}

.side {
  display: none;
  width: 200px;
  color: var(--muted);
}
#layout.wide .side { display: block; }
.side h2 {
  margin: 6px 0 8px;
  color: var(--text);
  letter-spacing: 0.28em;
  font-weight: 600;
}
.side-kicker, .kicker {
  color: var(--cyan);
  letter-spacing: 0.22em;
  font-size: 12px;
}
.side-note { line-height: 1.55; font-size: 14px; }
.helps { padding-left: 18px; line-height: 1.7; font-size: 14px; }

#frame {
  position: relative;
  flex: none;
}
#stage {
  width: 540px;
  height: 960px;
  position: absolute;
  left: 0;
  top: 0;
  overflow: hidden;
  background: #070b14;
  touch-action: none;
  box-shadow:
    0 0 0 1px rgba(61, 255, 242, 0.38),
    0 20px 80px rgba(0, 0, 0, 0.45);
  transform-origin: top left;
}
#stage.danger {
  box-shadow:
    inset 0 0 40px rgba(255, 90, 54, 0.28),
    0 0 0 1px rgba(255, 90, 54, 0.7);
}
#cv {
  width: 540px;
  height: 960px;
  display: block;
  touch-action: none;
}
#stage::after {
  content: "";
  pointer-events: none;
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.025),
    rgba(255, 255, 255, 0.025) 1px,
    transparent 1px,
    transparent 4px
  );
  opacity: 0.35;
}

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 28px 26px 36px;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.18), rgba(7, 11, 20, 0.72) 42%, rgba(7, 11, 20, 0.4));
}
.screen.hidden, .hidden { display: none !important; }

#screen-menu {
  justify-content: flex-start;
  padding-top: 64px;
}
.titles { text-align: center; margin-bottom: 18px; }
h1 {
  margin: 4px 0;
  font-size: 68px;
  letter-spacing: 0.34em;
  font-weight: 650;
  text-indent: 0.34em;
  text-shadow: 0 0 24px rgba(61, 255, 242, 0.45);
}
h2 { margin: 6px 0 10px; letter-spacing: 0.18em; font-weight: 600; }
h3 { margin: 14px 0 6px; color: var(--cyan); letter-spacing: 0.14em; font-size: 14px; }
.lead { margin: 0; color: var(--muted); letter-spacing: 0.18em; }
.hint { color: var(--muted); font-size: 13px; line-height: 1.5; }

.panel {
  background: var(--panel);
  border: 1px solid var(--cyan-dim);
  padding: 18px 16px 16px;
  clip-path: var(--cut);
}
.menu-panel, .panel { display: flex; flex-direction: column; gap: 10px; }

button {
  color: var(--text);
  background: rgba(61, 255, 242, 0.06);
  border: 1px solid rgba(61, 255, 242, 0.42);
  letter-spacing: 0.16em;
  padding: 12px 10px;
  cursor: pointer;
  clip-path: var(--cut-sm);
}
button:hover { background: rgba(61, 255, 242, 0.18); }
button:active { transform: translateY(1px); }
button:disabled { opacity: 0.4; cursor: default; }
button.primary {
  background: linear-gradient(180deg, rgba(61, 255, 242, 0.28), rgba(61, 255, 242, 0.08));
  border-color: rgba(61, 255, 242, 0.8);
}
button.ghost { background: transparent; color: var(--muted); }

.mode-card {
  text-align: left;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  letter-spacing: 0.04em;
}
.mode-card strong { letter-spacing: 0.2em; font-size: 20px; }
.mode-card span, .mode-card em { color: var(--muted); font-style: normal; font-size: 13px; letter-spacing: 0.06em; }

.hangar-nav {
  display: grid;
  grid-template-columns: 52px 1fr 52px;
  align-items: center;
  gap: 8px;
}
.hangar-nav h2 { text-align: center; margin: 0; }
.hangar-nav button { letter-spacing: 0; }
.lock { text-align: center; color: var(--orange); margin: 4px 0 0; letter-spacing: 0.2em; }
#ship-blurb, #ship-skill { margin: 0; line-height: 1.55; }
#ship-skill { color: var(--cyan); }

ol { margin: 0; padding-left: 22px; color: var(--text); }
ol li { margin: 4px 0; }
ol .empty { list-style: none; margin-left: -22px; color: var(--muted); }

#hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}
#hud button { pointer-events: auto; }

.hud-top {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  display: grid;
  grid-template-columns: 74px 1fr 96px;
  gap: 8px;
  align-items: start;
}
#btn-pause {
  padding: 6px 0;
  letter-spacing: 0.12em;
  font-size: 13px;
}
.hud-mid { text-align: center; }
#chapter-label {
  letter-spacing: 0.12em;
  font-size: 14px;
  color: var(--text);
  text-shadow: 0 2px 8px #000;
}
.scorebox { text-align: right; }
#score {
  color: var(--gold);
  font-size: 20px;
  letter-spacing: 0.06em;
  text-shadow: 0 2px 8px #000;
}
#combo { color: var(--cyan); font-size: 12px; min-height: 16px; letter-spacing: 0.08em; }

.hp-row {
  position: absolute;
  top: 48px;
  left: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hp {
  flex: 1;
  height: 8px;
  background: #172233;
  border: 1px solid rgba(61, 255, 242, 0.45);
}
.hp > span {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #1ad4c8, #d8fff9);
}
#shields, #lives { font-size: 12px; letter-spacing: 0.08em; color: var(--cyan); }

#bossbox { margin-top: 2px; }
#bossname {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: #ffd2c8;
}
.segs {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 4px;
  margin-top: 4px;
}
.segs span {
  display: block;
  height: 7px;
  background: #2a1210;
  border: 1px solid rgba(255, 90, 54, 0.45);
  position: relative;
  overflow: hidden;
}
.segs span i {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #ff5a36, #ffd56a);
}

#banner {
  position: absolute;
  top: 38%;
  left: 20px;
  right: 20px;
  text-align: center;
  font-size: 28px;
  letter-spacing: 0.24em;
  color: #fff;
  text-shadow: 0 0 16px rgba(61, 255, 242, 0.8);
  pointer-events: none;
  opacity: 0;
}

#weapon-lv {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 74px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.16em;
}

.hud-bottom {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}
.hud-bottom button {
  height: 52px;
  letter-spacing: 0.12em;
  background: rgba(7, 11, 20, 0.72);
}
#btn-focus.held {
  background: rgba(61, 255, 242, 0.28);
  color: #041816;
}
#btn-skill { position: relative; }
#btn-skill small {
  display: block;
  color: var(--gold);
  letter-spacing: 0.08em;
  font-size: 11px;
}
#btn-skill.ready { box-shadow: 0 0 16px rgba(255, 61, 138, 0.45); border-color: var(--pink); }
#btn-bomb {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
}
#btn-bomb.ready {
  box-shadow: 0 0 16px rgba(255, 213, 106, 0.45);
  border-color: var(--gold);
}
#pulse-bar {
  display: block;
  width: 86%;
  height: 4px;
  background: #172233;
  overflow: hidden;
}
#pulse-fill {
  display: block;
  height: 100%;
  width: 35%;
  background: linear-gradient(90deg, #ffd56a, #fff4c2);
}

.levelup-wrap { text-align: center; }
#cards { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.card {
  text-align: left;
  background: rgba(10, 16, 28, 0.92);
  padding: 12px 14px;
  letter-spacing: 0.04em;
}
.card .tag { font-size: 11px; letter-spacing: 0.16em; }
.card h3 { margin: 2px 0 4px; font-size: 18px; letter-spacing: 0.12em; }
.card p { margin: 0; color: var(--muted); font-size: 14px; letter-spacing: 0.02em; }
.card.common { border-color: rgba(61, 255, 242, 0.7); }
.card.common .tag { color: var(--cyan); }
.card.rare { border-color: rgba(255, 61, 138, 0.75); }
.card.rare .tag { color: var(--pink); }
.card.legend { border-color: rgba(255, 213, 106, 0.85); }
.card.legend .tag { color: var(--gold); }

#result-score {
  font-size: 48px;
  color: var(--gold);
  letter-spacing: 0.06em;
  text-shadow: 0 0 18px rgba(255, 213, 106, 0.35);
}
#result-lines {
  list-style: none;
  padding: 0;
  margin: 8px 0;
  color: var(--muted);
  line-height: 1.6;
}
#result-extra { color: var(--cyan); min-height: 1.2em; }