/* =========================================================================
 * FPS 灵敏度实验室 — 深色主题
 * ========================================================================= */
:root {
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #222221;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --border: rgba(255, 255, 255, 0.10);
  --blue: #3987e5;
  --orange: #d95926;
  --aqua: #199e70;
  --red: #e66767;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.55;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
}
.app-header h1 { font-size: 17px; font-weight: 650; letter-spacing: 0.2px; }
.app-header h1 span { color: var(--muted); font-weight: 400; font-size: 13px; margin-left: 8px; }
.profile-chip {
  font-size: 13px;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 14px;
}
.profile-chip b { color: var(--ink); }

main { max-width: 1060px; margin: 0 auto; padding: 24px; }

.screen { display: none; }
.screen.active { display: block; }

h2 { font-size: 20px; margin-bottom: 4px; }
.sub { color: var(--muted); font-size: 13px; margin-bottom: 20px; }
h3 { font-size: 15px; margin-bottom: 10px; color: var(--ink); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 16px;
}

/* ---------------- 表单 ---------------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px 18px;
}
.field label {
  display: block;
  font-size: 12.5px;
  color: var(--ink-2);
  margin-bottom: 5px;
}
.field input, .field select {
  width: 100%;
  background: var(--surface-2);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 9px 11px;
  font-size: 14.5px;
  font-family: inherit;
}
.field input:focus, .field select:focus { outline: 2px solid var(--blue); outline-offset: -1px; }
.field .hint { font-size: 11.5px; color: var(--muted); margin-top: 4px; }

.seg-toggle { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-bottom: 14px; }
.seg-toggle button {
  background: transparent; color: var(--ink-2); border: 0;
  padding: 8px 16px; font-size: 13.5px; cursor: pointer; font-family: inherit;
}
.seg-toggle button.on { background: var(--blue); color: #fff; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 10px 22px;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.btn:hover { filter: brightness(1.12); }
.btn.secondary { background: var(--surface-2); color: var(--ink); border: 1px solid var(--border); }
.btn.ghost { background: transparent; color: var(--ink-2); border: 1px solid var(--border); }
.btn.danger { background: var(--red); }
.btn:disabled { opacity: 0.45; cursor: default; }

/* ---------------- 换算预览 ---------------- */
.conv-hero {
  display: flex;
  align-items: baseline;
  gap: 18px;
  flex-wrap: wrap;
  margin: 8px 0 4px;
}
.conv-hero .big { font-size: 42px; font-weight: 700; }
.conv-hero .big small { font-size: 16px; color: var(--muted); font-weight: 400; margin-left: 4px; }
.conv-hero .aux { color: var(--ink-2); font-size: 14px; }

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
table.data th, table.data td {
  text-align: left;
  padding: 7px 10px;
  border-bottom: 1px solid var(--grid);
}
table.data th { color: var(--muted); font-weight: 500; font-size: 12.5px; }
table.data td { color: var(--ink-2); font-variant-numeric: tabular-nums; }
table.data td:first-child { color: var(--ink); }
table.data tr.hl td { color: var(--ink); background: rgba(57, 135, 229, 0.12); }

/* ---------------- 菜单 ---------------- */
.action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
}
.action-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: border-color 0.15s;
}
.action-card:hover { border-color: var(--blue); }
.action-card .icon { font-size: 26px; margin-bottom: 8px; }
.action-card b { display: block; font-size: 16px; margin-bottom: 4px; }
.action-card p { color: var(--muted); font-size: 13px; }

.notice {
  border-left: 3px solid var(--orange);
  background: rgba(217, 89, 38, 0.08);
  padding: 10px 14px;
  border-radius: 0 8px 8px 0;
  font-size: 13px;
  color: var(--ink-2);
  margin-bottom: 16px;
}

/* ---------------- 测试舞台 ---------------- */
.test-screen { position: fixed; inset: 0; z-index: 50; background: #000; }
#test-stage { position: absolute; inset: 0; }
#game-canvas { display: block; cursor: crosshair; }

#hud-top {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  padding: 12px 18px;
  font-size: 13.5px;
  color: var(--ink-2);
  pointer-events: none;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
}
#hud-top b { color: var(--ink); }

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: rgba(10, 10, 12, 0.82);
  text-align: center;
  padding: 24px;
}
.overlay.hidden { display: none; }
.overlay h3 { font-size: 22px; }
.overlay p { color: var(--ink-2); max-width: 460px; font-size: 14px; }
.overlay .row { display: flex; gap: 12px; }

/* ---------------- 结果 ---------------- */
.score-hero {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.score-hero .total {
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
}
.score-hero .total small { font-size: 15px; color: var(--muted); font-weight: 400; }
.subscores { display: flex; gap: 22px; flex-wrap: wrap; }
.subscores div { font-size: 13px; color: var(--muted); }
.subscores b { display: block; font-size: 21px; color: var(--ink); font-weight: 650; }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 12px;
}
.metric-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
}
.metric-card .v { font-size: 22px; font-weight: 650; }
.metric-card .v small { font-size: 12px; color: var(--muted); font-weight: 400; margin-left: 2px; }
.metric-card .l { font-size: 12.5px; color: var(--ink-2); margin-top: 2px; }
.metric-card .en { font-size: 10.5px; color: var(--muted); }

/* ---------------- 水平条 ---------------- */
.hbar-row { display: grid; grid-template-columns: 120px 1fr 76px; gap: 10px; align-items: center; margin-bottom: 9px; }
.hbar-label { font-size: 12.5px; color: var(--ink-2); }
.hbar-track { height: 14px; background: var(--surface-2); border-radius: 4px; overflow: hidden; }
.hbar-fill { height: 100%; border-radius: 4px 4px 4px 4px; }
.hbar-value { font-size: 12.5px; color: var(--ink); text-align: right; font-variant-numeric: tabular-nums; }

.chart-tip {
  position: absolute;
  transform: translate(-50%, -100%);
  background: #262625;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 7px 10px;
  font-size: 12px;
  color: var(--ink-2);
  pointer-events: none;
  white-space: nowrap;
  z-index: 5;
}
.chart-tip b { color: var(--ink); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 760px) { .two-col { grid-template-columns: 1fr; } }

/* ---------------- 自定义权重滑条 ---------------- */
.weight-sliders { max-width: 460px; }
.weight-row {
  display: grid;
  grid-template-columns: 42px 1fr 52px;
  gap: 12px;
  align-items: center;
  margin-bottom: 8px;
  font-size: 13px;
  color: var(--ink-2);
}
.weight-row b { color: var(--ink); text-align: right; font-variant-numeric: tabular-nums; }
.weight-row input[type="range"] { width: 100%; accent-color: var(--blue); }

/* ---------------- 开镜换算折叠卡 ---------------- */
.ads-card summary { cursor: pointer; list-style: none; }
.ads-card summary::-webkit-details-marker { display: none; }
.ads-card summary::before { content: "▸ "; color: var(--muted); }
.ads-card[open] summary::before { content: "▾ "; }

.footer-note { color: var(--muted); font-size: 12px; margin-top: 24px; text-align: center; }
.toolbar { display: flex; gap: 10px; margin: 18px 0; flex-wrap: wrap; }