/* Physiverse posts and optics simulations */
.pv-post-wrap { max-width: 1040px; }
.pv-post-head { margin-bottom: 40px; }
.pv-post-tag { display: inline-block; text-decoration: none; }
.pv-post-tag a { color: inherit; text-decoration: none; }
.pv-post-tag a:hover, a.pv-post-tag:hover { color: var(--text); }
.pv-post-tag .pv-sep { opacity: 0.5; margin: 0 4px; }
.pv-archive-sub { max-width: 640px; }
.pv-topics { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.pv-topic {
  font-family: 'DM Mono', monospace; font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  padding: 7px 16px; border: 1px solid var(--border); color: var(--muted); text-decoration: none; transition: all 0.2s;
}
.pv-topic:hover { color: var(--text); border-color: var(--text); }
.pv-topic.is-active { color: #fff; border-color: var(--text); background: var(--text); }
.pv-post-meta {
  font-family: 'DM Mono', monospace; font-size: 11px; letter-spacing: 2px;
  text-transform: uppercase; color: var(--muted);
}

/* Article text */
.pv-prose { font-family: var(--font-body); font-size: 16px; line-height: 1.75; color: var(--text2); }
.pv-prose > *:not(.pv-aberr):not(.pv-gb):not(.pv-zk):not(.pv-bec):not(.pv-mot):not(.pv-fc) { max-width: 760px; }
.pv-prose p { margin: 0 0 1.2em; }
.pv-prose h2 {
  font-family: var(--font-display); font-size: 30px; line-height: 1.15;
  letter-spacing: -0.02em; color: var(--text); margin: 2.2em 0 0.6em;
}
.pv-prose strong { color: var(--text); }
.pv-prose em { color: var(--text2); }
.pv-prose ul { padding-left: 1.2em; margin: 0 0 1.4em; }
.pv-prose li { margin: 0 0 0.6em; }
.pv-prose li::marker { color: var(--accent2); }
.pv-prose a { color: var(--text); text-underline-offset: 3px; }
.pv-table { overflow-x: auto; margin: 0 0 0.8em; }
.pv-table table { border-collapse: collapse; width: 100%; min-width: 640px; font-size: 14px; }
.pv-table th {
  font-family: 'DM Mono', monospace; font-weight: 400; font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--muted); text-align: left; padding: 10px 14px 10px 0; border-bottom: 1px solid var(--text);
}
.pv-table th, .pv-table td { border: 0 !important; }
.pv-table thead th { border-bottom: 1px solid var(--text) !important; }
.pv-table td { vertical-align: top; padding: 12px 14px 12px 0; border-bottom: 1px solid var(--border) !important; }
.pv-table thead { border: 0 !important; }
.pv-table td:first-child { color: var(--text); white-space: nowrap; }
.pv-note { font-size: 14px; color: var(--muted); }

/* Category listing */
.pv-post-list { display: grid; gap: 16px; }
.pv-card {
  display: block; padding: 28px 32px; text-decoration: none; background: #fff;
  border: 1px solid var(--border); transition: border-color 0.2s, background 0.2s;
}
.pv-card:hover { border-color: var(--text); background: var(--bg2); }
.pv-card-title { font-family: var(--font-display); font-size: 26px; line-height: 1.2; color: var(--text); margin: 8px 0 10px; }
.pv-card-desc { color: var(--text2); font-size: 15px; max-width: 720px; margin-bottom: 14px; }
.pv-card-more { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--text); }

/* Lens aberrations simulator */
.pv-aberr { margin: 8px 0 48px; }
.pv-ab-tabs { display: flex; border: 1px solid var(--text); background: #fff; }
.pv-ab-tab {
  flex: 1 1 auto; padding: 14px 16px; border: 0; border-right: 1px solid var(--text); background: transparent;
  font-family: 'DM Mono', monospace; font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--muted); cursor: pointer; white-space: nowrap; transition: color 0.2s, background 0.2s;
}
.pv-ab-tab:last-child { border-right: 0; }
.pv-ab-tab:hover { color: var(--text); background: var(--bg2); }
.pv-ab-tab[aria-selected="true"] { color: #fff; background: var(--text); }
.pv-ab-tab:focus-visible, .pv-ab-btn:focus-visible { outline: 1px solid var(--accent2); outline-offset: 2px; }
.pv-ab-stage { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 3fr); gap: 16px; margin-top: 16px; }
.pv-ab-stage figure { margin: 0; }
.pv-ab-stage canvas { display: block; width: 100%; background: #03060c; border: 0; }
.pv-ab-stage figcaption { font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: 1px; line-height: 1.5; color: var(--muted); margin-top: 8px; }
.pv-ab-controls { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 18px 28px; margin-top: 24px; }
.pv-ab-ctl { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--text); }
.pv-ab-ctl-top { display: flex; justify-content: space-between; gap: 8px; }
.pv-ab-ctl-val { font-family: 'DM Mono', monospace; font-size: 12px; color: var(--muted); white-space: nowrap; }
.pv-ab-ctl input[type="range"] { width: 100%; margin: 0; accent-color: var(--text); }
.pv-ab-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--border); }
.pv-ab-readout { margin: 0 auto 0 0 !important; font-family: 'DM Mono', monospace; font-size: 13px; color: var(--text); }
.pv-ab-btn {
  padding: 11px 22px; font-family: 'DM Mono', monospace; font-size: 11px; font-weight: 500; letter-spacing: 2px; text-transform: uppercase;
  background: var(--text); color: #fff; border: 1px solid var(--text); cursor: pointer; transition: all 0.2s;
}
.pv-ab-btn:hover { background: #262626; }
.pv-ab-btn-ghost { background: #fff; color: var(--text); border-color: var(--text); }
.pv-ab-btn-ghost:hover { background: var(--text); color: #fff; }
.pv-ab-btn[hidden] { display: none; }
.pv-ab-info { margin-top: 28px; padding: 24px 28px; background: var(--bg2); border: 0; border-left: 2px solid var(--accent2); }
.pv-prose .pv-ab-info h3 { font-family: var(--font-display); font-weight: 700; font-size: 20px; letter-spacing: -0.01em; color: var(--text); margin: 0 0 8px; }
.pv-prose .pv-ab-info p { margin: 0 0 10px; font-size: 15px; }
.pv-prose .pv-ab-info p:last-child { margin-bottom: 0; }
.pv-ab-try strong { color: var(--text) !important; }
@media (max-width: 760px) {
  .pv-post-wrap { padding-left: 20px; padding-right: 20px; }
  .pv-ab-stage { grid-template-columns: 1fr; }
  .pv-ab-sensor { max-width: 320px; width: 100%; justify-self: center; }
  .pv-ab-tabs { overflow-x: auto; }
  .pv-ab-tab { flex: 0 0 auto; }
  .pv-ab-info { padding: 18px; }
  .pv-card { padding: 22px; }
  .pv-prose h2 { font-size: 26px; }
}

/* Gaussian beam explorer */
.pv-gb { margin: 8px 0 48px; }
.pv-gb-stage { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 3fr); gap: 16px; }
.pv-gb-stage figure { margin: 0; }
.pv-gb-stage canvas { display: block; width: 100%; background: #03060c; }
.pv-gb-side canvas { cursor: ew-resize; }
.pv-gb-profile { margin-top: 6px; }
.pv-gb-stage figcaption { font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: 1px; line-height: 1.5; color: var(--muted); margin-top: 8px; }
.pv-ab-ctl[hidden], .pv-gb-group[hidden] { display: none; }
.pv-gb-preset select {
  width: 100%; font: inherit; font-size: 14px; padding: 7px 10px; border: 1px solid #D4D4D4; border-radius: 0;
  background: #fff; color: var(--text);
}
.pv-gb-toggle { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 600; color: var(--text); cursor: pointer; align-self: end; padding-bottom: 2px; }
.pv-gb-toggle input { width: 18px; height: 18px; accent-color: var(--text); margin: 0; }
.pv-gb-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px 32px; margin-top: 28px; }
.pv-gb-group { border-top: 1px solid var(--text); padding-top: 12px; }
.pv-prose .pv-gb-group h4 { font-family: 'DM Mono', monospace; font-weight: 400; font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); margin: 0 0 6px; }
.pv-gb-row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 14px; line-height: 1.35; }
.pv-gb-name { color: var(--text2); }
.pv-gb-name small { display: block; font-size: 12px; color: var(--muted); }
.pv-gb-row b { font-family: 'DM Mono', monospace; font-weight: 500; color: var(--text); white-space: nowrap; text-align: right; }
@media (max-width: 760px) {
  .pv-gb-stage { grid-template-columns: 1fr; }
  .pv-gb-cross { max-width: 340px; width: 100%; justify-self: center; }
}

/* Zernike explorer */
.pv-zk { margin: 8px 0 48px; }
.pv-zk .pv-ab-controls { margin-top: 0; margin-bottom: 20px; }
.pv-zk-stage { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.pv-zk-stage figure { margin: 0; }
.pv-zk-stage canvas { display: block; width: 100%; background: #03060c; }
.pv-zk-stage figcaption { font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: 1px; line-height: 1.5; color: var(--muted); margin-top: 8px; }
.pv-zk-lower { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 28px; margin-top: 28px; align-items: start; }
.pv-prose .pv-zk-h { font-family: 'DM Mono', monospace; font-weight: 400; font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); margin: 0 0 12px; }
.pv-zk-pyr { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.pv-zk-row { position: relative; display: flex; justify-content: center; gap: 6px; width: 100%; padding-left: 34px; box-sizing: border-box; }
.pv-zk-n { position: absolute; left: 0; top: 18px; font-family: 'DM Mono', monospace; font-size: 10px; color: var(--muted); }
.pv-zk-tile {
  display: flex; flex-direction: column; align-items: center; gap: 2px; width: 58px; padding: 5px 0 4px;
  background: #fff; border: 1px solid var(--border); cursor: pointer; transition: border-color 0.2s, background 0.2s;
}
.pv-zk-tile canvas { display: block; width: 44px; height: 44px; border-radius: 50%; }
.pv-zk-tile:hover { border-color: var(--text); }
.pv-zk-tile[aria-pressed="true"] { border-color: var(--text); background: var(--text); }
.pv-zk-tile[aria-pressed="true"] .pv-zk-j, .pv-zk-tile[aria-pressed="true"] .pv-zk-v { color: #fff; }
.pv-zk-tile:focus-visible, .pv-zk-use:focus-visible { outline: 1px solid var(--accent2); outline-offset: 2px; }
.pv-zk-j { font-family: 'DM Mono', monospace; font-size: 11px; color: var(--text); line-height: 1.2; }
.pv-zk-v { font-family: 'DM Mono', monospace; font-size: 10px; color: var(--accent2); line-height: 1.2; min-height: 12px; }
.pv-prose .pv-zk-axis { font-size: 12px; line-height: 1.5; color: var(--muted); max-width: 340px; margin: 12px auto 0; text-align: center; }
.pv-zk-info { margin-top: 0; }
.pv-prose .pv-zk-meta { font-family: 'DM Mono', monospace; font-size: 12px !important; color: var(--muted); margin-bottom: 16px !important; }
.pv-zk-ctl { margin-bottom: 14px; }
.pv-zk-btns { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.pv-zk-btns .pv-ab-btn { padding: 8px 14px; }
.pv-ab-btn:disabled { opacity: 0.35; cursor: default; }
.pv-ab-btn-ghost:disabled:hover { background: #fff; color: var(--text); }
.pv-ab-btn:not(.pv-ab-btn-ghost):disabled:hover { background: var(--text); }
.pv-zk-use { width: 100%; background: none; border: 0; border-bottom: 1px solid var(--border); font: inherit; text-align: left; cursor: pointer; }
.pv-zk-use:hover .pv-gb-name { color: var(--text); }
.pv-prose .pv-zk-empty { font-size: 14px; color: var(--muted); margin: 8px 0 0; }
@media (max-width: 900px) {
  .pv-zk-lower { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .pv-zk-stage { grid-template-columns: 1fr 1fr; gap: 10px; }
  .pv-zk-spot { grid-column: 1 / -1; max-width: 360px; width: 100%; justify-self: center; }
  .pv-zk-tile { width: 54px; }
  .pv-zk-tile canvas { width: 40px; height: 40px; }
  .pv-zk-n { display: none; }
  .pv-zk-row { padding-left: 0; }
}

/* MOT simulator (reuses the BEC stage layout) */
.pv-mot { margin: 8px 0 48px; }
.pv-mot .pv-ab-controls { margin-top: 0; margin-bottom: 20px; }
/* live numbers: fixed value column so the rows never re-wrap as the values change */
.pv-mot .pv-gb-name { flex: 1 1 auto; min-width: 0; }
.pv-mot .pv-gb-row b { flex: 0 0 15ch; font-variant-numeric: tabular-nums; overflow: hidden; text-overflow: ellipsis; }
.pv-mot .pv-ab-readout { flex: 1 0 100%; min-height: 2.8em; }
@media (max-width: 760px) { .pv-mot .pv-ab-readout { min-height: 4.6em; } }

/* BEC explorer */
.pv-bec { margin: 8px 0 48px; }
.pv-bec .pv-ab-controls { margin-top: 0; margin-bottom: 20px; }
.pv-bec-stage { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 3fr); gap: 16px; align-items: start; }
.pv-bec-stage figure { margin: 0; }
.pv-bec-stage canvas { display: block; width: 100%; background: #03060c; }
.pv-bec-side { display: flex; flex-direction: column; gap: 10px; }
.pv-bec-stage figcaption { font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: 1px; line-height: 1.5; color: var(--muted); margin-top: 6px; }
@media (max-width: 760px) {
  .pv-bec-stage { grid-template-columns: 1fr; }
}
.pv-prose .pv-eq { font-family: 'DM Mono', monospace; font-size: 16px; color: var(--text); background: var(--bg2); padding: 16px 20px; overflow-x: auto; white-space: nowrap; }

/* Fiber coupling game (reuses the MOT number layout) */
.pv-fc { margin: 8px 0 48px; }
.pv-fc-knobs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 32px; margin: 20px 0 4px; }
.pv-fc-mount { border-top: 1px solid var(--text); padding-top: 10px; display: flex; flex-direction: column; gap: 12px; }
.pv-prose .pv-fc-mount h4 { font-family: 'DM Mono', monospace; font-weight: 400; font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); margin: 0; }
.pv-fc-knob { display: grid; grid-template-columns: 36px minmax(0, 1fr) 36px; gap: 8px; align-items: center; }
.pv-fc-knob input[type="range"] { width: 100%; margin: 0; accent-color: var(--text); }
.pv-fc-nudge { width: 36px; height: 32px; padding: 0; border: 1px solid var(--text); background: #fff; color: var(--text); font: 500 16px/1 'DM Mono', monospace; cursor: pointer; touch-action: manipulation; }
.pv-fc-nudge:hover { background: var(--text); color: #fff; }
.pv-fc-nudge:focus-visible { outline: 1px solid var(--accent2); outline-offset: 2px; }
.pv-fc-knob-top { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 8px; font-size: 13px; color: var(--text); }
.pv-fc-opts { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 18px 28px; margin-bottom: 20px; }
.pv-fc .pv-fc-layout { margin: 28px 0 0; }
.pv-fc figure { margin: 0; }
.pv-fc canvas { display: block; width: 100%; background: #03060c; }
.pv-fc figcaption { font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: 1px; line-height: 1.5; color: var(--muted); margin-top: 6px; }
.pv-fc-stage { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; align-items: start; }
.pv-fc-meter { background: #03060c; color: #e8edf8; padding: 16px 18px; display: flex; flex-direction: column; gap: 10px; }
.pv-fc-meter-lbl { font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: rgba(232,237,248,0.6); }
.pv-fc-meter-val { font-family: 'DM Mono', monospace; font-size: 44px; line-height: 1; font-variant-numeric: tabular-nums; color: #fff; white-space: nowrap; }
.pv-fc-bar { height: 10px; background: rgba(232,237,248,0.12); position: relative; overflow: hidden; }
.pv-fc-bar span { position: absolute; left: 0; top: 0; bottom: 0; background: #3fd6b8; transition: width 0.15s; }
.pv-fc-bar i { position: absolute; top: -2px; bottom: -2px; width: 2px; background: #ffb070; }
.pv-fc-meter-subs { display: flex; flex-wrap: wrap; gap: 4px 20px; }
.pv-fc-meter-sub { font-family: 'DM Mono', monospace; font-size: 12px; color: rgba(232,237,248,0.75); font-variant-numeric: tabular-nums; }
.pv-fc .pv-gb-name { flex: 1 1 auto; min-width: 0; }
.pv-fc .pv-gb-row b { flex: 0 0 15ch; font-variant-numeric: tabular-nums; overflow: hidden; text-overflow: ellipsis; }
.pv-fc .pv-ab-readout { flex: 1 0 100%; min-height: 3em; font-family: var(--font-body) !important; font-size: 15px !important; line-height: 1.45; }
@media (max-width: 900px) { .pv-fc-stage { grid-template-columns: 1fr 1fr; } .pv-fc-meter { grid-column: 1 / -1; } }
@media (max-width: 760px) {
  .pv-fc-knobs { grid-template-columns: 1fr; }
  .pv-fc-stage { gap: 10px; }
  .pv-fc-meter { padding: 12px 14px; gap: 8px; }
  .pv-fc-meter-val { font-size: 34px; }
  .pv-fc-knob-top { font-size: 12px; }
  .pv-fc-mount { gap: 8px; }
}