/* 凹透镜成像特有样式（通用样式见 ../shared/base.css） */

#ray { position: absolute; inset: 0; touch-action: none; }
#ray.grab { cursor: grab; }
#ray.grabbing { cursor: grabbing; }
[hidden] { display: none !important; }

.ok { color: #7ee081; }
.bad { color: #ff7a59; }
.virt { color: #c9a7ff; }

.readout .big { font-size: 18px; }
.readout .tip { font-size: 12px; color: var(--accent); margin-top: 4px; min-height: 18px; }
.readout dd { font-variant-numeric: tabular-nums; }
.readout dt { white-space: nowrap; }

.presets { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 6px; }
.presets button { font: inherit; font-size: 13px; color: var(--text); background: var(--panel-2); border: 1px solid var(--line);
  border-radius: 8px; padding: 7px 0; cursor: pointer; }
.presets button:hover { border-color: var(--accent); }
.presets button.on { border-color: var(--accent); background: rgba(255,201,74,.14); }

.seg.wide { display: flex; width: 100%; }
.seg.wide button { flex: 1; font-size: 12px; padding: 5px 0; }
#panel .row { grid-template-columns: 44px 1fr; margin: 8px 0; }
#panel .row:has(.switch) { grid-template-columns: 64px 1fr 72px; }
.btns { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.checks { margin-top: 8px; }
.checks.one { grid-template-columns: 1fr; }
#quizBar { position: absolute; left: 50%; bottom: 52px; transform: translateX(-50%); z-index: 3; width: min(440px, calc(100% - 24px));
  padding: 8px 12px 10px; border-radius: 12px; background: rgba(17,23,35,.9); border: 1px solid var(--line); }
#quizMsg { margin: 0; font-size: 13px; line-height: 1.6; color: var(--text); }
#quizMsg:empty { display: none; }
#quizMsg b { margin-right: 4px; }
.answer { margin-top: 6px; }
.answer button { flex: 1; padding: 7px 0; font-size: 14px; }
.answer button:disabled { opacity: .55; cursor: default; }
.answer button.on { opacity: 1; border-color: #7ee081; color: #7ee081; }
.answer #nextQ { flex: 1.2; }

.raykey { list-style: none; padding: 0; margin: 10px 0 0; font-size: 12px; color: var(--muted); }
.raykey li { margin: 3px 0; }
.raykey i { display: inline-block; width: 18px; height: 3px; border-radius: 2px; vertical-align: middle; margin-right: 6px; }
.raykey i.dash { background: repeating-linear-gradient(90deg, #c9a7ff 0 4px, transparent 4px 7px); }
.raykey i.dash.grey { background: repeating-linear-gradient(90deg, #8d99ab 0 3px, transparent 3px 8px); }
.raykey b.vf { display: inline-block; width: 8px; height: 8px; border-radius: 50%; border: 1.6px solid #ffc94a; vertical-align: -1px; margin-right: 4px; }