* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: #070b24;
  color: #eaf1ff;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  user-select: none; -webkit-user-select: none;
}

canvas#game {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  touch-action: none;
  display: block;
}

.screen {
  position: fixed; inset: 0;
  display: none;
  z-index: 10;
  overflow: hidden;
}
.screen.active { display: block; }
.hidden { display: none !important; }

/* ---------- buttons ---------- */
.btn {
  width: 100%;
  padding: 14px 18px;
  border: none; border-radius: 14px;
  font-size: 17px; font-weight: 600;
  cursor: pointer;
  margin: 8px 0;
}
.btn-primary {
  background: linear-gradient(135deg, #2f7bff, #4f5bff);
  color: #fff;
  box-shadow: 0 6px 20px rgba(47,123,255,.35);
}
.btn-primary:active { transform: scale(.97); }
.btn-ghost {
  background: rgba(255,255,255,.08);
  color: #dbe6ff;
  border: 1px solid rgba(255,255,255,.18);
}

/* ---------- splash ---------- */
#screen-splash { align-items: center; justify-content: center; }
#screen-splash.active { display: flex; }
.card {
  width: 88%; max-width: 420px;
  text-align: center;
  padding: 34px 24px;
  background: rgba(10,16,42,.72);
  border: 1px solid rgba(120,160,255,.25);
  border-radius: 24px;
  backdrop-filter: blur(6px);
}
.logo {
  width: 66px; height: 66px; margin: 0 auto 14px;
  background: linear-gradient(180deg, #5b8dff, #2332a8);
  clip-path: polygon(50% 0, 100% 100%, 50% 72%, 0 100%);
  box-shadow: 0 0 30px rgba(80,130,255,.7);
}
.card h1 { font-size: 30px; letter-spacing: 6px; color: #fff; }
.card h2 { font-size: 17px; font-weight: 500; color: #9db8ff; margin: 6px 0 12px; }
.card .sub { font-size: 14px; color: #c3d2ff; margin-bottom: 20px; }
.card .foot { font-size: 11px; color: #6c7ba6; margin-top: 16px; line-height: 1.6; }

/* ---------- config ---------- */
#screen-config { flex-direction: column; }
#screen-config.active { display: flex; }
.head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px calc(10px + env(safe-area-inset-top));
  background: rgba(8,12,34,.9);
  border-bottom: 1px solid rgba(120,160,255,.15);
}
.btn-back {
  background: rgba(255,255,255,.08);
  color: #dbe6ff; border: none;
  padding: 8px 14px; border-radius: 10px;
  font-size: 14px;
}
.head-title { font-size: 18px; font-weight: 700; letter-spacing: 2px; }

.cfg-scroll {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 14px 16px calc(24px + env(safe-area-inset-bottom));
}
.cfg-group { margin-bottom: 18px; }
.cfg-title { font-size: 15px; font-weight: 700; color: #9db8ff; margin-bottom: 10px; }
.cards { display: flex; flex-direction: column; gap: 10px; }
.part-card {
  background: rgba(16,24,54,.85);
  border: 1.5px solid rgba(120,160,255,.18);
  border-radius: 14px;
  padding: 12px 14px;
  cursor: pointer;
  transition: all .15s;
}
.part-card .pc-head { display: flex; align-items: center; gap: 10px; }
.pc-dot {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.35);
  flex: none;
}
.pc-name { font-size: 16px; font-weight: 700; color: #fff; }
.pc-tag {
  font-size: 11px; color: #7fc0ff;
  background: rgba(47,123,255,.18);
  padding: 2px 8px; border-radius: 20px;
}
.pc-desc { font-size: 12.5px; color: #b9c6ea; margin: 8px 2px 0; line-height: 1.5; }
.pc-stats { display: flex; gap: 14px; margin-top: 8px; }
.pc-stat { font-size: 11.5px; color: #8fa3d9; }
.pc-stat b { color: #eaf1ff; }
.part-card.sel {
  border-color: #4f8bff;
  background: rgba(47,123,255,.14);
  box-shadow: 0 0 0 3px rgba(47,123,255,.22), 0 4px 18px rgba(47,123,255,.2);
}
.part-card.sel .pc-dot { background: #4f8bff; border-color: #9ec1ff; }

.cfg-summary {
  background: rgba(14,22,50,.9);
  border: 1px solid rgba(120,160,255,.2);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 8px;
}
.cfg-summary .s-title { font-size: 13px; color: #9db8ff; margin-bottom: 8px; font-weight: 600; }
.s-row { display: flex; justify-content: space-between; font-size: 13px; padding: 3px 0; color: #c9d6ff; }
.s-row b { color: #fff; }

.cfg-footer {
  padding: 12px 16px calc(14px + env(safe-area-inset-bottom));
  background: rgba(8,12,34,.92);
  border-top: 1px solid rgba(120,160,255,.15);
}
.btn-launch { margin: 0; }

/* ---------- game overlay ---------- */
.overlay {
  position: fixed; inset: 0;
  z-index: 30;
  display: flex; align-items: center; justify-content: center;
  background: rgba(4,7,22,.55);
  pointer-events: none;
}
.overlay-box {
  text-align: center;
  padding: 22px 28px;
  border-radius: 18px;
  background: rgba(8,12,34,.9);
  border: 1px solid rgba(120,160,255,.3);
}
.overlay-box h3 { font-size: 22px; color: #fff; margin-bottom: 8px; }
.overlay-box p { font-size: 14px; color: #b9c6ea; }

/* ---------- result ---------- */
#screen-result { flex-direction: column; }
#screen-result.active { display: flex; }
.result-scroll {
  flex: 1; overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: calc(20px + env(safe-area-inset-top)) 16px calc(30px + env(safe-area-inset-bottom));
}
.result-scroll h2 { text-align: center; font-size: 24px; letter-spacing: 2px; }
.res-score {
  text-align: center;
  font-size: 52px; font-weight: 800;
  margin: 10px 0 4px;
  background: linear-gradient(135deg, #ffd166, #ff8a3c);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.res-detail {
  background: rgba(14,22,50,.9);
  border: 1px solid rgba(120,160,255,.2);
  border-radius: 14px;
  padding: 12px 16px;
  margin: 8px 0 14px;
}
.d-row { display: flex; justify-content: space-between; font-size: 14px; padding: 5px 0; color: #c9d6ff; }
.d-row b { color: #fff; }
.d-row.d-offset {
  margin: 4px -8px;
  padding: 9px 8px;
  border-radius: 10px;
  background: rgba(255,209,102,0.12);
  border: 1px solid rgba(255,209,102,0.35);
}
.d-row.d-offset span { color: #ffd166; font-weight: 700; }
.d-row.d-offset b { color: #ffd166; font-size: 16px; }
.d-row.ok { color: #7dffb0; }
.d-row.bad { color: #ff8a8a; }

.res-name { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.res-name label { font-size: 13px; color: #9db8ff; }
.res-name input {
  flex: 1;
  background: rgba(14,22,50,.9);
  border: 1px solid rgba(120,160,255,.3);
  color: #fff;
  border-radius: 10px;
  padding: 9px 12px;
  font-size: 15px;
  outline: none;
}

.video-wrap { border-radius: 16px; overflow: hidden; background:#000; margin-bottom: 12px; }
.video-wrap video { width: 100%; display: block; aspect-ratio: 16/9; background:#000; }
.video-note { font-size: 11px; color: #6c7ba6; text-align: center; padding: 6px; background: rgba(0,0,0,.5); }

.res-btns { display: flex; gap: 10px; margin: 4px 0 10px; }
.res-btns .btn { flex: 1; margin: 0; }

.lb-title { margin: 14px 0 10px; font-size: 16px; color: #9db8ff; }
.lb { background: rgba(14,22,50,.9); border-radius: 14px; overflow: hidden; border: 1px solid rgba(120,160,255,.15); }
.lb-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  font-size: 14px;
  border-bottom: 1px solid rgba(120,160,255,.08);
}
.lb-item:last-child { border-bottom: none; }
.lb-rank { width: 26px; text-align: center; font-weight: 800; color: #8fa3d9; }
.lb-rank.top { color: #ffd166; }
.lb-name { flex: 1; color: #eaf1ff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lb-score { font-weight: 800; color: #fff; }
.lb-meta { font-size: 11px; color: #6c7ba6; width: 110px; text-align: right; }
.lb-empty { padding: 20px; text-align: center; color: #6c7ba6; font-size: 13px; }
.lb-loading { padding: 16px; text-align: center; color: #9db8ff; font-size: 13px; }

/* ---------- howto ---------- */
.howto { align-items: center; justify-content: center; }
.howto.active { display: flex; }
.howto-box {
  width: 90%; max-width: 440px;
  background: rgba(10,16,42,.94);
  border: 1px solid rgba(120,160,255,.25);
  border-radius: 20px;
  padding: 24px;
  overflow-y: auto;
  max-height: 90%;
}
.howto-box h3 { font-size: 20px; margin-bottom: 14px; }
.howto-box p { font-size: 14px; color: #c3d2ff; line-height: 1.7; margin-bottom: 12px; }
.howto-box b { color: #fff; }