/* reed-solomon.html — tabs + Reed–Solomon-specific figures (packets, finite-field
clock, polynomial plots, parameter tables). Shared chrome (glossary popovers,
footnotes, .eq equations, MathML, refs) lives in styles.css. */
/* ── tabs (article / rough notes) ── */
.post-tabs {
display: flex;
gap: 0.35rem;
margin: 0 0 1.75rem;
padding: 0.25rem;
border: 1px solid var(--line);
border-radius: 10px;
background: var(--card-bg);
-webkit-backdrop-filter: blur(8px);
backdrop-filter: blur(8px);
}
.post-tabs__btn {
flex: 1;
padding: 0.55rem 0.85rem;
border: none;
border-radius: 7px;
background: transparent;
color: var(--muted);
font-family: var(--mono);
font-size: 12px;
cursor: pointer;
transition: background 0.15s, color 0.15s;
}
.post-tabs__btn[aria-selected="true"] {
background: color-mix(in srgb, var(--ink) 8%, var(--card-bg));
color: var(--ink);
box-shadow: 0 1px 0 var(--line);
}
.post-tabs__btn:focus-visible {
outline: 2px solid var(--accent);
outline-offset: 2px;
}
/* panel visibility, driven by (set pre-paint), like hamming */
.post-tab-panel { display: none; }
.post-tab-panel[hidden] { display: none; }
html[data-post-tab="article"] .post-tab-panel[data-panel="article"],
html[data-post-tab="notes"] .post-tab-panel[data-panel="notes"],
html[data-post-tab="cpp"] .post-tab-panel[data-panel="cpp"] { display: block; }
html:not([data-post-tab]) .post-tab-panel[data-panel="article"] { display: block; }
/* ── rough notes: gallery + lightbox ── */
.notes-tab__intro {
margin: 0 0 1.5rem;
text-align: center;
color: var(--soft);
}
.notes-map {
--notes-card: min(16rem, calc(50% - 1.5rem));
position: relative;
display: grid;
grid-template-columns: 1fr 1fr;
grid-auto-rows: auto;
column-gap: 3rem;
row-gap: 3.25rem;
max-width: 46rem;
margin: 0 auto 2rem;
padding: 2.25rem 2.25rem 2.5rem;
border: 1px solid var(--line);
border-radius: var(--radius);
background:
radial-gradient(ellipse 120% 80% at 50% 0%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 55%),
color-mix(in srgb, var(--card-bg) 45%, transparent);
}
.notes-map__paths {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
overflow: visible;
pointer-events: none;
color: color-mix(in srgb, var(--muted) 60%, transparent);
}
/* card placement (grid-row / grid-column) is set per-card by notes-map.js so the
map works for any number of pages; CSS only handles look + the narrow fallback. */
.notes-map__card {
position: relative;
z-index: 1;
display: flex;
flex-direction: column;
gap: 0.65rem;
width: 100%;
max-width: var(--notes-card);
margin: 0;
padding: 0.7rem;
border: 1px solid var(--line);
border-radius: var(--radius);
background: var(--card-bg);
backdrop-filter: blur(2px);
-webkit-backdrop-filter: blur(2px);
cursor: pointer;
text-align: left;
font: inherit;
color: var(--ink);
justify-self: center;
transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}
.notes-map__card:hover {
transform: translateY(-2px);
border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
background: color-mix(in srgb, var(--card-bg) 100%, var(--accent) 6%);
}
.notes-map__card:focus-visible {
outline: 2px solid var(--accent);
outline-offset: 3px;
}
.notes-map__num {
position: absolute;
top: -0.45rem;
left: 0.55rem;
z-index: 1;
min-width: 1.5rem;
padding: 0.1rem 0.4rem;
border-radius: var(--radius);
background: var(--bg);
border: 1px solid color-mix(in srgb, var(--accent) 32%, var(--line));
font-family: var(--mono);
font-size: 11px;
font-weight: 500;
color: var(--ink);
line-height: 1.35;
text-align: center;
}
.notes-map__frame {
display: flex;
align-items: center;
justify-content: center;
aspect-ratio: 3 / 4;
overflow: hidden;
border-radius: 8px;
border: 1px solid color-mix(in srgb, var(--line) 60%, transparent);
background: #faf7f0;
}
[data-theme="dark"] .notes-map__frame { background: #eceae4; }
.notes-map__frame img {
display: block;
width: 100%;
height: 100%;
object-fit: contain;
object-position: center top;
}
.notes-map__caption {
font-family: var(--mono);
font-size: 11px;
line-height: 1.5;
color: var(--soft);
display: -webkit-box;
-webkit-line-clamp: 2;
-webkit-box-orient: vertical;
overflow: hidden;
}
/* ── notes fullscreen lightbox ── */
.notes-lightbox {
position: fixed;
inset: 0;
z-index: 60;
display: none;
align-items: center;
justify-content: center;
padding: 1rem;
opacity: 0;
visibility: hidden;
transition: opacity 0.22s ease, visibility 0s linear 0.22s;
}
.notes-lightbox.is-open {
display: flex;
opacity: 1;
visibility: visible;
transition: opacity 0.22s ease, visibility 0s;
}
.notes-lightbox__backdrop {
position: absolute;
inset: 0;
border: none;
background: rgba(12, 14, 22, 0.72);
backdrop-filter: blur(6px);
-webkit-backdrop-filter: blur(6px);
cursor: pointer;
}
[data-theme="dark"] .notes-lightbox__backdrop { background: rgba(0, 0, 0, 0.82); }
.notes-lightbox__shell {
position: relative;
z-index: 1;
display: flex;
flex-direction: column;
width: min(920px, 100%);
max-height: min(96vh, 96dvh);
border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
border-radius: 14px;
background: color-mix(in srgb, var(--panel) 96%, transparent);
box-shadow: 0 28px 80px rgba(0, 0, 0, 0.45);
overflow: hidden;
transform: translateY(12px) scale(0.98);
transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}
.notes-lightbox.is-open .notes-lightbox__shell { transform: none; }
.notes-lightbox__head {
display: flex;
align-items: flex-start;
justify-content: space-between;
gap: 1rem;
padding: 0.85rem 1rem 0.75rem;
border-bottom: 1px solid var(--line);
}
.notes-lightbox__meta {
display: flex;
flex-direction: column;
gap: 0.25rem;
min-width: 0;
}
.notes-lightbox__num {
font-family: var(--mono);
font-size: 11px;
font-weight: 500;
color: var(--accent);
letter-spacing: 0.04em;
}
.notes-lightbox__caption {
font-family: var(--mono);
font-size: 12px;
line-height: 1.45;
color: var(--soft);
}
.notes-lightbox__close {
flex-shrink: 0;
width: 2rem;
height: 2rem;
border: 1px solid var(--line);
border-radius: 8px;
background: transparent;
color: var(--muted);
font-size: 1.25rem;
line-height: 1;
cursor: pointer;
transition: color 0.15s, border-color 0.15s;
}
.notes-lightbox__close:hover {
color: var(--ink);
border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
}
.notes-lightbox__fig {
flex: 1;
min-height: 0;
margin: 0;
padding: 0.75rem 1rem;
display: flex;
align-items: center;
justify-content: center;
overflow: auto;
background: color-mix(in srgb, var(--bg) 50%, transparent);
}
.notes-lightbox__fig img {
display: block;
max-width: 100%;
max-height: min(72vh, 72dvh);
width: auto;
height: auto;
border-radius: 6px;
box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.notes-lightbox__nav {
display: flex;
align-items: center;
justify-content: space-between;
gap: 0.75rem;
padding: 0.65rem 1rem 0.85rem;
border-top: 1px solid var(--line);
}
.notes-lightbox__nav-btn {
padding: 0.4rem 0.7rem;
border: 1px solid var(--line);
border-radius: 7px;
background: transparent;
font-family: var(--mono);
font-size: 11px;
color: var(--soft);
cursor: pointer;
transition: border-color 0.15s, color 0.15s;
}
.notes-lightbox__nav-btn:hover:not(:disabled) {
color: var(--ink);
border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}
.notes-lightbox__nav-btn:disabled {
opacity: 0.35;
cursor: default;
}
.notes-lightbox__counter {
font-family: var(--mono);
font-size: 11px;
color: var(--muted);
}
body.notes-lightbox-open { overflow: hidden; }
@media (max-width: 640px) {
.notes-map {
grid-template-columns: 1fr;
grid-template-rows: none;
grid-auto-rows: auto;
row-gap: 0;
max-width: 18rem;
padding: 1.5rem 1.25rem 1.75rem;
}
.notes-map__card {
grid-row: auto !important;
grid-column: 1 !important;
justify-self: center !important;
margin: 0 0 2rem !important;
max-width: 16rem;
backdrop-filter: none;
-webkit-backdrop-filter: none;
}
.notes-lightbox { padding: 0; }
.notes-lightbox__shell {
width: 100%;
max-height: 100vh;
max-height: 100dvh;
border-radius: 0;
border: none;
}
.notes-lightbox__fig img { max-height: min(68vh, 68dvh); }
}
@media (prefers-reduced-motion: reduce) {
.notes-map__card,
.notes-map__frame img,
.notes-lightbox,
.notes-lightbox__shell {
transition: none;
}
}
/* ── callout note ── */
.rs-note {
position: relative;
margin: 1.75rem 0;
padding: 1rem 1.1rem 1.05rem;
border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--line));
border-left: 3px solid var(--accent);
border-radius: 10px;
background: color-mix(in srgb, var(--accent) 6%, var(--card-bg));
}
.rs-note__tag {
display: inline-block;
margin-bottom: 0.55rem;
padding: 0.12rem 0.45rem;
border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
border-radius: 5px;
background: var(--card-bg);
font-family: var(--mono);
font-size: 10px;
font-weight: 500;
letter-spacing: 0.08em;
text-transform: uppercase;
color: var(--accent);
}
.rs-note__body {
margin: 0;
font-family: var(--mono);
font-size: 13px;
line-height: 1.6;
color: var(--soft);
}
.rs-note__body strong { color: var(--ink); font-weight: 600; }
/* warm “lightbulb moment” variant — same quiet recipe as the base note,
just with a yellow accent instead of the site accent. No glow, no fills:
it should sit in the page like every other card. */
.rs-note--idea {
--idea-accent: #a07d1c; /* muted brass for light theme */
border-color: color-mix(in srgb, var(--idea-accent) 28%, var(--line));
border-left-color: var(--idea-accent);
background: color-mix(in srgb, var(--idea-accent) 6%, var(--card-bg));
}
[data-theme="dark"] .rs-note--idea {
--idea-accent: #f9e2af; /* catppuccin yellow */
}
.rs-note--idea .rs-note__tag {
border-color: color-mix(in srgb, var(--idea-accent) 35%, var(--line));
color: var(--idea-accent);
}
.rs-note__bulb {
margin-right: 0.25rem;
font-size: 1.05em;
line-height: 1;
vertical-align: -0.05em;
}
/* ── packet strip ── */
.rs-packets {
display: flex;
flex-wrap: wrap;
gap: 0.55rem;
justify-content: center;
margin: 0.4rem 0;
}
.rs-packet {
display: flex;
flex-direction: column;
align-items: center;
min-width: 3.1rem;
padding: 0.5rem 0.4rem;
border: 1px solid var(--line);
border-radius: 8px;
background: var(--card-bg);
font-family: var(--mono);
}
.rs-packet__label {
font-size: 10px;
color: var(--muted);
letter-spacing: 0.03em;
}
.rs-packet__val {
font-size: 1.25rem;
font-weight: 600;
color: var(--ink);
line-height: 1.4;
}
.rs-packet--redundant {
border-color: color-mix(in srgb, var(--moss) 60%, var(--line));
background: color-mix(in srgb, var(--moss) 12%, var(--card-bg));
}
.rs-packet--redundant .rs-packet__val { color: var(--moss); }
.rs-packet--lost {
border-style: dashed;
border-color: color-mix(in srgb, var(--rosy) 65%, var(--line));
background: color-mix(in srgb, var(--rosy) 9%, var(--card-bg));
opacity: 0.85;
}
.rs-packet--lost .rs-packet__val {
color: var(--rosy);
text-decoration: line-through;
text-decoration-thickness: 2px;
}
.rs-packets__legend {
display: flex;
flex-wrap: wrap;
gap: 1rem;
justify-content: center;
margin-top: 0.9rem;
font-family: var(--mono);
font-size: 11px;
color: var(--muted);
}
.rs-packets__legend span { display: inline-flex; align-items: center; gap: 0.35rem; }
.rs-dot {
width: 0.7rem;
height: 0.7rem;
border-radius: 3px;
border: 1px solid var(--line);
display: inline-block;
}
.rs-dot--data { background: var(--card-bg); }
.rs-dot--redundant { background: color-mix(in srgb, var(--moss) 45%, var(--card-bg)); border-color: var(--moss); }
.rs-dot--lost { background: color-mix(in srgb, var(--rosy) 40%, var(--card-bg)); border-color: var(--rosy); border-style: dashed; }
/* ── tables ── */
.rs-table-wrap { overflow-x: auto; margin: 1.5rem 0; }
.rs-table {
width: 100%;
border-collapse: collapse;
font-family: var(--mono);
font-size: 12.5px;
}
.rs-table caption {
margin-bottom: 0.6rem;
font-size: 12px;
color: var(--muted);
text-align: left;
}
.rs-table th,
.rs-table td {
padding: 0.45rem 0.8rem;
border: 1px solid var(--line);
text-align: center;
white-space: nowrap;
}
.rs-table th {
color: var(--accent);
font-weight: 600;
background: color-mix(in srgb, var(--accent) 7%, var(--card-bg));
}
.rs-table td { color: var(--soft); }
.rs-table td strong { color: var(--ink); }
.rs-table tbody tr:nth-child(even) td { background: color-mix(in srgb, var(--ink) 3%, transparent); }
.rs-table .rs-table__row-head { color: var(--muted); text-align: left; }
/* ── SVG figures (plots + finite-field clock) ── */
.rs-svg { width: 100%; height: auto; display: block; }
.rs-figure {
margin: 1.75rem 0;
padding: 1.1rem;
border: 1px solid var(--line);
border-radius: 12px;
background: var(--card-bg);
}
/* hero figure: full-bleed like the Hamming post's hero (no card chrome) so the
opening plot reads at the same size, spanning the full content column. */
.rs-figure--hero {
margin: 0.5rem 0 0.5rem;
padding: 0;
border: none;
border-radius: 0;
background: none;
}
.rs-figure--hero img,
.rs-figure--hero video {
display: block;
width: 100%;
height: auto;
aspect-ratio: 16 / 9;
object-fit: cover;
border-radius: var(--radius);
border: 1px solid var(--line);
image-rendering: auto;
}
.rs-figure--split {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 1rem;
}
.rs-figure__title {
margin: 0 0 0.5rem;
font-family: var(--mono);
font-size: 11px;
letter-spacing: 0.04em;
text-transform: uppercase;
color: var(--muted);
text-align: center;
}
/* panel number under each half of a split figure, echoed in the caption */
.rs-figure__panelnum {
margin: 0.3rem 0 0;
font-family: var(--mono);
font-size: 11px;
color: var(--muted);
text-align: center;
}
/* plot primitives (styled via class on SVG elements) */
.rs-plot__frame { fill: none; stroke: var(--line); stroke-width: 1; }
.rs-plot__grid { stroke: color-mix(in srgb, var(--line) 60%, transparent); stroke-width: 1; }
.rs-plot__axis { stroke: var(--muted); stroke-width: 1.4; }
.rs-plot__curve { fill: none; stroke: var(--accent); stroke-width: 2.4; stroke-linecap: round; }
.rs-plot__curve--ghost { stroke: color-mix(in srgb, var(--accent) 35%, transparent); stroke-dasharray: 4 4; }
.rs-plot__dot { fill: var(--accent); stroke: var(--card-bg); stroke-width: 2; }
.rs-plot__dot--redundant { fill: var(--torus-2); }
.rs-plot__dot--lost { fill: none; stroke: var(--rosy); stroke-width: 2.4; stroke-dasharray: 3 3; }
.rs-plot__label { fill: var(--muted); font-family: var(--mono); font-size: 11px; }
.rs-plot__label--ink { fill: var(--ink); }
.rs-svg--clock { max-width: 240px; margin: 0 auto; }
.rs-figure--split > figcaption { grid-column: 1 / -1; }
/* finite-field clock */
.rs-clock__ring { fill: none; stroke: var(--line); stroke-width: 1.5; }
.rs-clock__num--on { fill: var(--card-bg); font-weight: 600; }
.rs-clock__tick { fill: var(--card-bg); stroke: var(--line); stroke-width: 1.4; }
.rs-clock__num { fill: var(--soft); font-family: var(--mono); font-size: 13px; text-anchor: middle; dominant-baseline: central; }
.rs-clock__arc { fill: none; stroke: var(--accent); stroke-width: 2.2; stroke-linecap: round; }
.rs-clock__from { stroke: var(--moss); fill: var(--moss); }
.rs-clock__to { stroke: var(--accent); fill: var(--accent); }
.rs-clock__cap { fill: var(--card-bg); }
.rs-clock__caption { fill: var(--muted); font-family: var(--mono); font-size: 11px; text-anchor: middle; }
@media (max-width: 600px) {
.rs-figure--split { grid-template-columns: 1fr; }
}
/* Em text */
.em__text {
color: var(--torus-1);
}
.note_span {
color: var(--moss);
}
/* ── Lagrange interpolation playground ── */
.lag-lab {
margin: 2rem 0;
border: 1px solid var(--line);
border-radius: 14px;
background: var(--card-bg);
overflow: hidden;
}
.lag-lab__head { padding: 1rem 1.1rem 0.5rem; }
.lag-lab__head h3 { margin: 0; font-family: var(--mono); font-size: 0.95rem; color: var(--ink); }
.lag-lab__head p { margin: 0.3rem 0 0; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.lag-lab__body {
display: grid;
grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
gap: 1rem;
padding: 0.8rem 1.1rem 1.1rem;
}
.lag-lab__plot-wrap { min-width: 0; }
.lag-plot { width: 100%; height: auto; display: block; touch-action: pan-y; user-select: none; }
.lag-plot__grid { stroke: color-mix(in srgb, var(--line) 55%, transparent); stroke-width: 1; }
.lag-plot__axis { stroke: var(--muted); stroke-width: 1.3; }
.lag-plot__tick { fill: var(--muted); font-family: var(--mono); font-size: 10px; }
.lag-plot__curve { fill: none; stroke: var(--accent); stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.lag-plot__term { fill: none; stroke-width: 1.8; opacity: 0.5; stroke-linecap: round; }
.lag-plot__term.is-sel { opacity: 1; stroke-width: 2.4; }
.lag-plot__pt { fill: var(--accent); stroke: var(--card-bg); stroke-width: 2.5; cursor: grab; touch-action: none; }
.lag-plot__pt:hover { stroke: var(--ink); }
.lag-plot__pt.is-sel { stroke: var(--ink); stroke-width: 3; }
.lag-plot__pt:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.lag-lab__controls { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.7rem; }
.lag-btn {
padding: 0.4rem 0.7rem;
border: 1px solid var(--line);
border-radius: 7px;
background: var(--card-bg);
color: var(--soft);
font-family: var(--mono);
font-size: 11.5px;
cursor: pointer;
transition: border-color 0.15s, color 0.15s;
}
.lag-btn:hover { border-color: var(--accent); color: var(--ink); }
.lag-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.lag-btn[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--card-bg)); }
.lag-lab__side { min-width: 0; font-family: var(--mono); }
.lag-lab__points { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.9rem; }
.lag-chip {
padding: 0.25rem 0.5rem;
border: 1px solid var(--line);
border-radius: 6px;
background: var(--card-bg);
color: var(--soft);
font-family: var(--mono);
font-size: 12px;
cursor: pointer;
}
.lag-chip.is-sel { border-color: var(--ink); color: var(--ink); }
.lag-lab__formula {
padding: 0.7rem 0.8rem;
border: 1px solid var(--line);
border-radius: 8px;
background: color-mix(in srgb, var(--ink) 3%, transparent);
font-size: 12px;
line-height: 1.9;
color: var(--soft);
}
.lag-mono { color: var(--ink); }
.lag-deg { display: block; margin-top: 0.4rem; font-size: 11px; color: var(--muted); }
.lag-lab__detail { margin-top: 0.9rem; }
.lag-detail__head { font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--accent); margin-bottom: 0.5rem; }
.lag-frac { display: flex; align-items: center; gap: 0.4rem; font-size: 13px; color: var(--soft); flex-wrap: wrap; }
.lag-frac__stack { display: inline-flex; flex-direction: column; align-items: center; text-align: center; }
.lag-frac__num { color: var(--ink); padding: 0 0.3rem; }
.lag-frac__bar { width: 100%; height: 1px; background: var(--soft); margin: 2px 0; }
.lag-frac__den { color: var(--ink); padding: 0 0.3rem; }
.lag-detail__note { margin: 0.7rem 0 0; font-size: 12px; line-height: 1.6; color: var(--soft); }
.lag-detail__note strong { color: var(--ink); }
/* term palette (works on both themes) */
.lag-term-0 { stroke: #5b8def; } .lag-term-fill-0 { fill: #5b8def; } .lag-term-chip-0 { border-color: #5b8def; color: #5b8def; }
.lag-term-1 { stroke: #3fae87; } .lag-term-fill-1 { fill: #3fae87; } .lag-term-chip-1 { border-color: #3fae87; color: #3fae87; }
.lag-term-2 { stroke: #d57f9e; } .lag-term-fill-2 { fill: #d57f9e; } .lag-term-chip-2 { border-color: #d57f9e; color: #d57f9e; }
.lag-term-3 { stroke: #d39a52; } .lag-term-fill-3 { fill: #d39a52; } .lag-term-chip-3 { border-color: #d39a52; color: #d39a52; }
.lag-term-4 { stroke: #9784ef; } .lag-term-fill-4 { fill: #9784ef; } .lag-term-chip-4 { border-color: #9784ef; color: #9784ef; }
.lag-term-5 { stroke: #46aebb; } .lag-term-fill-5 { fill: #46aebb; } .lag-term-chip-5 { border-color: #46aebb; color: #46aebb; }
.lag-term-6 { stroke: #c277cf; } .lag-term-fill-6 { fill: #c277cf; } .lag-term-chip-6 { border-color: #c277cf; color: #c277cf; }
.lag-term-7 { stroke: #c0824e; } .lag-term-fill-7 { fill: #c0824e; } .lag-term-chip-7 { border-color: #c0824e; color: #c0824e; }
.lag-term-8 { stroke: #6f97cf; } .lag-term-fill-8 { fill: #6f97cf; } .lag-term-chip-8 { border-color: #6f97cf; color: #6f97cf; }
@media (max-width: 640px) {
.lag-lab__body { grid-template-columns: 1fr; }
}
/* ── Reed–Solomon pipeline playground ── */
.rs-lab {
margin: 2rem 0;
border: 1px solid var(--line);
border-radius: 14px;
background: var(--card-bg);
overflow: hidden;
}
.rs-lab__head { padding: 1rem 1.1rem 0.4rem; }
.rs-lab__head h3 { margin: 0; font-family: var(--mono); font-size: 0.95rem; color: var(--ink); }
.rs-lab__head p { margin: 0.3rem 0 0; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.rs-lab__stage {
padding: 0.85rem 1.1rem;
border-top: 1px solid var(--line);
}
.rs-lab__step {
display: inline-block;
margin-bottom: 0.7rem;
font-family: var(--mono);
font-size: 10.5px;
letter-spacing: 0.05em;
text-transform: uppercase;
color: var(--accent);
}
.rs-lab__data { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.rs-data-cell {
width: 3rem; height: 3rem;
border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
border-radius: 9px;
background: color-mix(in srgb, var(--accent) 8%, var(--card-bg));
color: var(--ink);
font-family: var(--mono); font-size: 1.4rem; font-weight: 600;
cursor: pointer;
transition: border-color 0.15s, background 0.15s;
}
.rs-data-cell:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 16%, var(--card-bg)); }
.rs-data-hint { margin: 0.5rem 0 0; font-family: var(--mono); font-size: 11px; color: var(--muted); }
.rs-lab__krow { margin-top: 0.8rem; font-family: var(--mono); font-size: 12px; color: var(--soft); }
.rs-k-btn {
margin-left: 0.3rem;
width: 1.8rem; height: 1.8rem;
border: 1px solid var(--line); border-radius: 6px;
background: var(--card-bg); color: var(--soft);
font-family: var(--mono); font-size: 12px; cursor: pointer;
}
.rs-k-btn.is-on { border-color: var(--accent); color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, var(--card-bg)); }
.rs-lab__poly {
margin-bottom: 0.9rem; padding: 0.6rem 0.8rem;
border: 1px solid var(--line); border-radius: 8px;
background: color-mix(in srgb, var(--ink) 3%, transparent);
font-family: var(--mono); font-size: 13px; color: var(--soft);
overflow-x: auto;
}
.rs-lab__poly .lag-mono { color: var(--ink); }
.rs-lab__packets { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.rs-packet--btn { cursor: pointer; transition: transform 0.1s, border-color 0.15s; }
.rs-packet--btn:hover { transform: translateY(-2px); }
.rs-packet--btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.rs-lab__result {
font-family: var(--mono); font-size: 12.5px; line-height: 1.6;
padding: 0.7rem 0.85rem; border-radius: 8px;
border: 1px solid var(--line); color: var(--soft);
}
.rs-lab__result strong { color: var(--ink); }
.rs-lab__result--ok { border-color: color-mix(in srgb, var(--moss) 55%, var(--line)); background: color-mix(in srgb, var(--moss) 9%, var(--card-bg)); }
.rs-lab__result--ok strong { color: var(--moss); }
.rs-lab__result--fail { border-color: color-mix(in srgb, var(--rosy) 55%, var(--line)); background: color-mix(in srgb, var(--rosy) 9%, var(--card-bg)); }
.rs-lab__result--fail strong { color: var(--rosy); }
.rs-lab__controls { padding: 0.85rem 1.1rem; border-top: 1px solid var(--line); }
/* keep the GF(7) reference plot compact, not full-width */
.rs-lab [data-rs-plot] { display: flex; justify-content: center; margin-top: 0.6rem; }
.rs-lab [data-rs-plot] .rs-svg { max-width: 280px; }
/* ── C++ playground (cpp tab + reed-solomon-cpp.html) ── */
.cpp-play { margin: 1.5rem 0 2rem; }
.cpp-modes {
display: flex;
flex-wrap: wrap;
gap: 0.4rem;
margin-bottom: 1.1rem;
}
.cpp-mode-btn {
padding: 0.5rem 0.85rem;
border: 1px solid var(--line);
border-radius: 8px;
background: color-mix(in srgb, var(--card-bg) 45%, transparent);
color: var(--muted);
font-family: var(--mono);
font-size: 12px;
cursor: pointer;
transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.cpp-mode-btn:hover { color: var(--ink); }
.cpp-mode-btn.is-active {
color: var(--ink);
border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
background: color-mix(in srgb, var(--accent) 10%, transparent);
}
.cpp-play__layout {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 1.25rem;
align-items: start;
}
.cpp-play__panel {
min-width: 0;
padding: 1rem 1.05rem;
border: 1px solid var(--line);
border-radius: var(--radius);
background: color-mix(in srgb, var(--card-bg) 45%, transparent);
}
.cpp-play__panel h3 {
margin: 0 0 0.65rem;
font-family: var(--mono);
font-size: 0.9rem;
font-weight: 500;
color: var(--ink);
}
.cpp-play__hint { margin: 0 0 0.5rem; font-size: 13px; color: var(--muted); }
.cpp-play__hint--tight { margin: 0 0 0.4rem; font-size: 12px; }
.cpp-play__hint--stdout { margin: 0.75rem 0 0.35rem; font-size: 12px; }
.cpp-fields {
display: flex;
flex-wrap: wrap;
gap: 0.9rem;
margin-bottom: 0.85rem;
font-family: var(--mono);
font-size: 12px;
color: var(--muted);
}
.cpp-fields label { display: inline-flex; align-items: center; gap: 0.4rem; }
.cpp-fields input {
padding: 0.3rem 0.45rem;
border: 1px solid var(--line);
border-radius: 5px;
background: var(--card-bg);
color: var(--ink);
font-family: var(--mono);
font-size: 12px;
}
.cpp-fields input[type="text"] { width: 7rem; }
.cpp-fields input[type="number"] { width: 3.2rem; }
.cpp-play__actions {
display: flex;
flex-wrap: wrap;
gap: 0.4rem;
margin-bottom: 0.85rem;
}
.cpp-btn {
padding: 0.45rem 0.7rem;
border: 1px solid var(--line);
border-radius: 6px;
background: var(--panel);
color: var(--soft);
font-family: var(--mono);
font-size: 11px;
cursor: pointer;
transition: border-color 0.12s, color 0.12s;
}
.cpp-btn:hover { color: var(--ink); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.cpp-btn--primary { border-color: color-mix(in srgb, var(--accent) 40%, transparent); color: var(--ink); }
/* basic mode has no transmit/decode — hide the prod-only controls */
.cpp-play[data-mode="basic"] [data-prod-only] { display: none; }
.cpp-bytes {
display: flex;
flex-wrap: wrap;
gap: 5px;
min-height: 3rem;
margin-bottom: 0.25rem;
}
.cpp-byte {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
gap: 1px;
min-width: 2.6rem;
padding: 0.3rem 0.35rem;
border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--line));
border-radius: 6px;
background: color-mix(in srgb, var(--accent) 8%, transparent);
color: var(--ink);
font-family: var(--mono);
cursor: pointer;
transition: border-color 0.12s, background 0.12s, transform 0.1s;
}
.cpp-byte:hover:not(:disabled) { transform: translateY(-1px); }
.cpp-byte:disabled { cursor: default; }
.cpp-byte--parity {
border-color: var(--line);
background: color-mix(in srgb, var(--card-bg) 60%, transparent);
color: var(--soft);
}
.cpp-byte--err {
border-color: var(--rosy);
background: color-mix(in srgb, var(--rosy) 16%, transparent);
color: var(--ink);
}
.cpp-byte__tag { font-size: 9px; color: var(--muted); letter-spacing: 0.03em; }
.cpp-byte--err .cpp-byte__tag { color: var(--rosy); }
.cpp-byte__val { font-size: 14px; }
.cpp-play__terminal {
margin: 0;
padding: 0.75rem 0.85rem;
min-height: 11rem;
max-height: 20rem;
overflow: auto;
border: 1px solid var(--line);
border-radius: 8px;
background: color-mix(in srgb, var(--bg) 75%, transparent);
font-family: var(--mono);
font-size: 11px;
line-height: 1.55;
color: var(--soft);
white-space: pre-wrap;
}
.cpp-play__source-wrap { position: relative; }
.cpp-play__source {
margin: 0;
max-height: 30rem;
overflow: auto;
font-size: 11px;
}
.cpp-play__source[hidden] { display: none; }
.cpp-open-link {
display: inline-flex;
align-items: center;
gap: 0.35rem;
margin: 0 0 1rem;
padding: 0.5rem 0.75rem;
border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
border-radius: 8px;
background: color-mix(in srgb, var(--accent) 8%, transparent);
font-family: var(--mono);
font-size: 12px;
color: var(--ink);
text-decoration: none;
}
.cpp-open-link:hover { border-color: color-mix(in srgb, var(--accent) 55%, transparent); }
@media (max-width: 720px) {
.cpp-play__layout { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
.cpp-byte, .cpp-mode-btn, .cpp-btn { transition: none; }
}