/* Luviner "instrument" design system: left-aligned, ruled, numbered like a
   datasheet. Every rule is scoped under .lab, so pages opt in by wrapping
   their content in it; the homepage adds home-lab.css on top. */

.lab {
    --ink: #09090b;
    --rule: rgba(255, 255, 255, 0.09);
    --rule-strong: rgba(255, 255, 255, 0.18);
    --signal: #ef4444;
    --mono: 'JetBrains Mono', ui-monospace, monospace;
    --display: 'Space Grotesk', system-ui, sans-serif;
    --wrap: 1180px;
    font-family: 'Inter', system-ui, sans-serif;
    overflow-x: clip;
}

.lab-mono { font-family: var(--mono); font-size: 0.82em; letter-spacing: 0; }
.lab-num { font-family: var(--mono); color: var(--signal); font-size: 0.78rem; font-weight: 500; }

/* ---------- Hero ---------- */
.lab-hero {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 6rem 1.5rem 6rem;
    position: relative;
}
.lab-hero::before {
    /* graph paper, fading out */
    content: "";
    position: absolute;
    inset: 0 -50vw;
    background-image:
        linear-gradient(var(--rule) 1px, transparent 1px),
        linear-gradient(90deg, var(--rule) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 60% 70% at 70% 45%, #000 20%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 60% 70% at 70% 45%, #000 20%, transparent 75%);
    opacity: 0.55;
    pointer-events: none;
    z-index: -1;
}
.lab-kicker {
    font-family: var(--mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-secondary);
    margin: 0 0 1.75rem;
    padding-left: 1.1rem;
    border-left: 2px solid var(--signal);
}
.lab-hero h1 {
    text-wrap: balance;
    font-family: var(--display);
    font-weight: 600;
    font-size: clamp(2.5rem, 4.8vw, 4.1rem);
    line-height: 0.98;
    letter-spacing: -0.035em;
    margin: 0 0 1.75rem;
    color: var(--text);
}
.lab-hero h1 em {
    font-style: normal;
    color: var(--signal);
    display: block;
}
.lab-lede {
    font-size: 1.2rem;
    line-height: 1.55;
    color: var(--text-secondary);
    max-width: 30rem;
    margin: 0 0 2.25rem;
}
.lab-cta { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.lab-note { margin: 0.9rem 0 0; font-size: 0.8rem; color: var(--text-tertiary); }

.lab-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.9rem 1.4rem;
    font-family: var(--display);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    border-radius: 2px;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.lab-btn-fill { background: var(--signal); color: #fff; border: 1px solid var(--signal); }
.lab-btn-fill:hover { background: #dc2626; }
.lab-btn-line { color: var(--text); border: 1px solid var(--rule-strong); }
.lab-btn-line:hover { border-color: var(--text); }
.lab-btn-ink { background: var(--ink); color: #fff; border: 1px solid var(--ink); }
.lab-btn-ink:hover { background: #27272a; }

.lab-dot {
    display: inline-block;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--scene);
    margin-right: 0.5rem;
    vertical-align: 1px;
    animation: lab-blink 1.6s steps(2, start) infinite;
}
@keyframes lab-blink { to { visibility: hidden; } }

/* ---------- Sections ---------- */
.lab-section {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 6rem 1.5rem;
    border-top: 1px solid var(--rule);
}
.lab-head {
    display: flex;
    gap: 0.9rem;
    align-items: baseline;
    font-family: var(--mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-tertiary);
    margin-bottom: 1.25rem;
}
.lab-title {
    font-family: var(--display);
    font-weight: 600;
    font-size: clamp(2rem, 3.6vw, 3rem);
    letter-spacing: -0.03em;
    line-height: 1.05;
    margin: 0 0 3rem;
    max-width: 18ch;
    color: var(--text);
}
.lab-sub { color: var(--text-secondary); font-size: 1.05rem; margin: -2rem 0 2.5rem; max-width: 36rem; }
.lab-link {
    display: inline-block;
    margin-top: 2.5rem;
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px solid var(--signal);
    padding-bottom: 2px;
}
.lab-link:hover { color: var(--signal); }

/* Products index */
.lab-index { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule-strong); }
.lab-index li { border-bottom: 1px solid var(--rule-strong); }
.lab-index a {
    display: grid;
    grid-template-columns: 3.5rem minmax(9rem, 1.1fr) 1fr 1.6fr 2rem;
    gap: 1.5rem;
    align-items: baseline;
    padding: 2rem 0.5rem;
    color: var(--text);
    text-decoration: none;
    position: relative;
    transition: background 0.2s, padding 0.2s;
}
.lab-index a::before {
    content: "";
    position: absolute;
    left: 0; top: -1px; bottom: -1px;
    width: 0;
    background: var(--c);
    transition: width 0.2s;
}
.lab-index a:hover { background: rgba(255, 255, 255, 0.025); padding-left: 1.25rem; }
.lab-index a:hover::before { width: 3px; }
.lab-index-n { font-family: var(--mono); font-size: 0.85rem; color: var(--c); }
.lab-index-name { font-family: var(--display); font-weight: 600; font-size: clamp(1.9rem, 3.4vw, 2.8rem); letter-spacing: -0.03em; line-height: 1; }
.lab-index-use { font-family: var(--mono); font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--c); }
.lab-index-desc { color: var(--text-secondary); font-size: 0.98rem; line-height: 1.5; }
.lab-index-go { font-size: 1.3rem; color: var(--text-tertiary); transition: transform 0.2s, color 0.2s; justify-self: end; }
.lab-index a:hover .lab-index-go { transform: translateX(4px); color: var(--c); }

/* Engine facts */
.lab-facts { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--rule-strong); }
.lab-facts > div { padding: 1.75rem 1.5rem 0.5rem 0; }
.lab-facts > div + div { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
.lab-facts h3 { font-family: var(--display); font-size: 1.35rem; font-weight: 600; letter-spacing: -0.02em; margin: 1.25rem 0 0.6rem; }
.lab-facts p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.55; margin: 0; }

/* References */
.lab-refs { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule-strong); }
.lab-refs li {
    display: grid;
    grid-template-columns: 3.5rem 1fr;
    gap: 1rem;
    padding: 1.6rem 0;
    border-bottom: 1px solid var(--rule);
    font-size: 1.02rem;
    line-height: 1.6;
    color: var(--text-secondary);
}
.lab-ref-n { font-family: var(--mono); color: var(--signal); }
.lab-refs a { color: var(--text); font-weight: 500; text-decoration: none; border-bottom: 1px solid var(--rule-strong); }
.lab-refs a:hover { border-bottom-color: var(--signal); }
.lab-refs .lab-mono { color: var(--text-tertiary); }

/* Use cases */
.lab-cases { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--rule-strong); }
.lab-cases a { padding: 1.75rem 1.5rem 1.5rem 0; color: var(--text); text-decoration: none; }
.lab-cases a + a { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
.lab-cases h3 { font-family: var(--display); font-size: 1.15rem; font-weight: 600; margin: 0 0 0.5rem; display: flex; justify-content: space-between; gap: 0.5rem; }
.lab-cases h3 span { color: var(--text-tertiary); transition: color 0.2s, transform 0.2s; }
.lab-cases a:hover h3 span { color: var(--signal); transform: translateX(3px); }
.lab-cases p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.5; margin: 0; }

/* FAQ */
.lab-split { display: grid; grid-template-columns: 1fr 1.5fr; gap: 4rem; align-items: start; }
.lab-split .lab-title { margin-bottom: 0; }
.lab-faq { border-top: 1px solid var(--rule-strong); }
.lab-faq details { border-bottom: 1px solid var(--rule); }
.lab-faq summary {
    list-style: none;
    cursor: pointer;
    padding: 1.3rem 2rem 1.3rem 0;
    font-family: var(--display);
    font-weight: 500;
    font-size: 1.08rem;
    position: relative;
}
.lab-faq summary::-webkit-details-marker { display: none; }
.lab-faq summary::after {
    content: "+";
    position: absolute;
    right: 0.25rem;
    font-family: var(--mono);
    color: var(--signal);
    transition: transform 0.2s;
}
.lab-faq details[open] summary::after { transform: rotate(45deg); }
.lab-faq p { margin: -0.4rem 0 1.4rem; color: var(--text-secondary); line-height: 1.6; max-width: 40rem; }

/* Founding partners band */
.lab-band {
    max-width: var(--wrap);
    margin: 2rem auto 0;
    padding: 0 1.5rem;
}
.lab-band > * { box-sizing: border-box; }
.lab-band {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 0;
}
.lab-band-main,
.lab-band-side { background: var(--signal); color: var(--ink); padding: 3.5rem 3rem; }
.lab-band-main { display: flex; flex-direction: column; justify-content: space-between; gap: 2rem; }
.lab-band-side { border-left: 1px solid rgba(9, 9, 11, 0.2); display: flex; flex-direction: column; gap: 2rem; }
.lab-band-label {
    font-family: var(--mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 500;
    margin: 0;
}
.lab-band h2 {
    font-family: var(--display);
    font-weight: 600;
    font-size: clamp(1.9rem, 3.3vw, 2.8rem);
    letter-spacing: -0.03em;
    line-height: 1.05;
    margin: 0;
    max-width: 20ch;
    text-wrap: balance;
}
.lab-band dl { margin: 0; display: grid; grid-template-columns: auto 1fr; }
.lab-band dt,
.lab-band dd { padding: 0.9rem 0; border-top: 1px solid rgba(9, 9, 11, 0.2); margin: 0; }
.lab-band dt {
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding-right: 1.5rem;
    padding-top: 1.05rem;
}
.lab-band dd { font-size: 1rem; line-height: 1.45; font-weight: 500; }
.lab-band .lab-btn { align-self: flex-start; }

/* Blog list */
.lab-posts { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule-strong); }
.lab-posts li { border-bottom: 1px solid var(--rule); }
.lab-posts a { display: grid; grid-template-columns: 7rem 1fr 2rem; gap: 1.5rem; align-items: baseline; padding: 1.2rem 0; color: var(--text); text-decoration: none; }
.lab-posts a span:nth-child(2) { font-size: 1.05rem; font-weight: 500; }
.lab-posts .lab-mono { color: var(--text-tertiary); }
.lab-posts a span:last-child { color: var(--text-tertiary); justify-self: end; transition: color 0.2s, transform 0.2s; }
.lab-posts a:hover span:last-child { color: var(--signal); transform: translateX(3px); }

/* Closing */
.lab-close { display: grid; grid-template-columns: 1.2fr 1fr; gap: 4rem; align-items: start; }
.lab-close .lab-title { margin-bottom: 1rem; }
.lab-close .lab-sub { margin: 0 0 2rem; }
.lab-close .lab-btn + .lab-btn { margin-left: 0.6rem; }
.lab-news { border: 1px solid var(--rule-strong); padding: 2rem; }
.lab-news h3 { font-family: var(--display); font-size: 1.3rem; font-weight: 600; margin: 0 0 0.4rem; }
.lab-news > p { color: var(--text-secondary); font-size: 0.95rem; margin: 0 0 1.25rem; }
.lab-news form { display: flex; border: 1px solid var(--rule-strong); }
.lab-news input[type=email] { flex: 1; min-width: 0; background: transparent; border: 0; padding: 0.85rem 1rem; color: var(--text); font: inherit; outline: none; }
.lab-news button { background: var(--text); color: var(--ink); border: 0; padding: 0 1.25rem; font-family: var(--display); font-weight: 600; cursor: pointer; }
.lab-news button:hover { background: var(--signal); color: #fff; }
.lab-fine { font-size: 0.75rem; color: var(--text-tertiary); margin: 0.75rem 0 0; }
.lab-ok { color: #4ade80; }
.lab-err { color: var(--signal); font-size: 0.85rem; margin: 0.5rem 0 0; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
    .lab-hero { padding-top: 4rem; }
    .lab-index a { grid-template-columns: 2.5rem 1fr 1.5rem; gap: 0.4rem 1rem; }
    .lab-index-name { grid-column: 2; }
    .lab-index-go { grid-column: 3; grid-row: 1; }
    .lab-index-use, .lab-index-desc { grid-column: 2 / 4; }
    .lab-facts, .lab-cases { grid-template-columns: 1fr 1fr; }
    .lab-facts > div:nth-child(3), .lab-cases a:nth-child(3) { border-left: 0; padding-left: 0; }
    .lab-facts > div:nth-child(n+3), .lab-cases a:nth-child(n+3) { border-top: 1px solid var(--rule); }
    .lab-split, .lab-close { grid-template-columns: 1fr; gap: 2.5rem; }
    .lab-band { grid-template-columns: 1fr; }
    .lab-band-side { border-left: 0; border-top: 1px solid rgba(9, 9, 11, 0.2); }
    .lab-band-main, .lab-band-side { padding: 2.5rem 1.75rem; }
}
@media (max-width: 560px) {
    .lab-section { padding: 4.5rem 1rem; }
    .lab-hero { padding: 3rem 1rem 4rem; }
    .lab-facts, .lab-cases { grid-template-columns: 1fr; }
    .lab-facts > div, .lab-cases a { border-left: 0 !important; padding-left: 0 !important; border-top: 1px solid var(--rule); }
    .lab-facts > div:first-child, .lab-cases a:first-child { border-top: 0; }
    .lab-posts a { grid-template-columns: 1fr 1.5rem; gap: 0.2rem 1rem; }
    .lab-posts .lab-mono { grid-column: 1 / 3; }
    .lab-close .lab-btn + .lab-btn { margin: 0.6rem 0 0; }
}
@media (prefers-reduced-motion: reduce) {
    .lab-dot { animation: none; }
}

/* ---------- Inner-page components ---------- */

/* Page hero: same voice as the homepage, no instrument beside it */
.lab-hero h1 em.inline { display: inline; }
.lab-hero-side { display: grid; grid-template-columns: 1.2fr 1fr; gap: 4rem; align-items: center; }

/* Big numbers in ruled columns */
.lab-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); border-top: 1px solid var(--rule-strong); border-bottom: 1px solid var(--rule-strong); }
.lab-stats > div { padding: 1.75rem 1.5rem 1.5rem 0; }
.lab-stats > div + div { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
.lab-stat-v { font-family: var(--display); font-weight: 600; font-size: clamp(2rem, 3.4vw, 2.8rem); letter-spacing: -0.03em; line-height: 1; color: var(--text); }
.lab-stat-v small { font-size: 0.5em; color: var(--text-secondary); margin-left: 0.15em; }
.lab-stat-l { font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-tertiary); margin-top: 0.75rem; }

/* Numbered steps */
.lab-steps { list-style: none; margin: 0; padding: 0; counter-reset: step; border-top: 1px solid var(--rule-strong); }
.lab-steps > li { counter-increment: step; display: grid; grid-template-columns: 3.5rem 1fr; gap: 1rem; padding: 1.5rem 0; border-bottom: 1px solid var(--rule); }
.lab-steps > li::before { content: counter(step, decimal-leading-zero); font-family: var(--mono); font-size: 0.85rem; color: var(--signal); padding-top: 0.2rem; }
.lab-steps h3 { font-family: var(--display); font-size: 1.15rem; font-weight: 600; margin: 0 0 0.35rem; }
.lab-steps p { color: var(--text-secondary); margin: 0; line-height: 1.55; }

/* Price plans in ruled columns */
.lab-plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); border-top: 1px solid var(--rule-strong); border-bottom: 1px solid var(--rule-strong); }
.lab-plan { padding: 2rem 1.5rem 2rem 0; display: flex; flex-direction: column; gap: 1.25rem; }
.lab-plan + .lab-plan { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
.lab-plan.is-featured { background: rgba(239, 68, 68, 0.05); box-shadow: inset 0 3px 0 var(--signal); padding-left: 1.5rem; }
.lab-plan-name { font-family: var(--mono); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-secondary); }
.lab-plan-price { font-family: var(--display); font-weight: 600; font-size: 2.6rem; letter-spacing: -0.03em; line-height: 1; }
.lab-plan-price small { font-size: 0.9rem; font-weight: 500; color: var(--text-tertiary); letter-spacing: 0; margin-left: 0.25rem; }
.lab-plan-for { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.5; margin: 0; }
.lab-plan ul { list-style: none; margin: 0; padding: 0; font-size: 0.92rem; }
.lab-plan li { padding: 0.45rem 0; border-top: 1px solid var(--rule); color: var(--text); }
.lab-plan li::before { content: "+"; font-family: var(--mono); color: var(--signal); margin-right: 0.6rem; }
.lab-plan .lab-btn { margin-top: auto; align-self: flex-start; }

/* Comparison / spec table */
.lab-table-wrap { overflow-x: auto; border-top: 1px solid var(--rule-strong); }
.lab-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.lab-table th, .lab-table td { text-align: left; padding: 0.9rem 1rem 0.9rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
.lab-table th { font-family: var(--mono); font-size: 0.72rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-tertiary); }
.lab-table td { color: var(--text-secondary); }
.lab-table td:first-child { color: var(--text); font-weight: 500; }

/* Code */
.lab-code { background: #050506; border: 1px solid var(--rule-strong); padding: 1.1rem 1.25rem; font-family: var(--mono); font-size: 0.85rem; line-height: 1.6; color: var(--text); overflow-x: auto; margin: 0 0 1.5rem; white-space: pre; }
.lab-code .c { color: var(--text-tertiary); }

/* Running text, for the few places that need paragraphs */
.lab-prose { max-width: 42rem; color: var(--text-secondary); font-size: 1.02rem; line-height: 1.7; }
.lab-prose p { margin: 0 0 1.1rem; }
.lab-prose strong { color: var(--text); font-weight: 600; }
.lab-prose a { color: var(--text); border-bottom: 1px solid var(--signal); text-decoration: none; }
.lab-prose h3 { font-family: var(--display); color: var(--text); font-size: 1.25rem; margin: 2rem 0 0.6rem; }

/* Forms */
.lab-form { display: grid; gap: 1.1rem; max-width: 40rem; }
.lab-form label { display: grid; gap: 0.4rem; font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-tertiary); }
.lab-form input, .lab-form textarea, .lab-form select { background: transparent; border: 1px solid var(--rule-strong); border-radius: 2px; padding: 0.8rem 0.9rem; color: var(--text); font: 400 1rem 'Inter', system-ui, sans-serif; text-transform: none; letter-spacing: 0; }
.lab-form input:focus, .lab-form textarea:focus, .lab-form select:focus { outline: none; border-color: var(--text); }
.lab-form button { justify-self: start; }

/* Colour per product, for --c driven components */
.lab .c-ward { --c: #f59e0b; }
.lab .c-lynx { --c: #34d399; }
.lab .c-edge { --c: #ef4444; }
.lab-tag { display: inline-block; font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--c, var(--signal)); }

@media (max-width: 960px) {
    .lab-hero-side { grid-template-columns: 1fr; gap: 3rem; }
    .lab-plan + .lab-plan, .lab-stats > div + div { border-left: 0; padding-left: 0; border-top: 1px solid var(--rule); }
    .lab-plan.is-featured { padding-left: 1.25rem; }
}

/* Grid children may hold wide code blocks: let them shrink instead of
   widening the page. */
.lab-hero-side > *, .lab-steps > li > div, .lab-split > *, .lab-close > * { min-width: 0; }

/* Switcher between sibling pages (pricing): partials/pricing-switch */
.lab-switch { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 3rem; border-top: 1px solid var(--rule-strong); border-bottom: 1px solid var(--rule-strong); }
.lab-switch > * { padding: 1rem 1rem 1rem 0; font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-tertiary); text-decoration: none; position: relative; }
.lab-switch > * + * { padding-left: 1rem; border-left: 1px solid var(--rule); }
.lab-switch b { display: block; font-family: var(--display); font-size: 1.15rem; font-weight: 600; text-transform: none; letter-spacing: -0.01em; color: var(--text-secondary); margin-bottom: 0.25rem; }
.lab-switch a:hover b, .lab-switch .is-on b { color: var(--text); }
.lab-switch .is-on::before { content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 3px; background: var(--c, var(--signal)); }
@media (max-width: 560px) {
    .lab-switch { grid-template-columns: 1fr 1fr; }
    .lab-switch > :nth-child(3) { border-left: 0; padding-left: 0; }
    .lab-switch > :nth-child(n+3) { border-top: 1px solid var(--rule); }
}