/* ==========================================================================
   Instant Read Visibility
   Dark navy reading surface, electric blue and orange accents. The palette is
   the product: the thermometer ramp runs cold blue to hot orange, and the same
   five tokens colour the gauge, the reading tiles, the badge and the published
   readings so a temperature looks the same everywhere it appears.
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    padding-top: var(--header-height);
    font-family: var(--font-body);
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    /* Low-light reading support: two soft radial fades in the brand colours
       take the edge off a flat dark field and keep long text comfortable. */
    background-image:
        radial-gradient(900px 620px at 12% -6%, rgba(0, 212, 255, 0.10), transparent 62%),
        radial-gradient(760px 520px at 92% 4%, rgba(245, 158, 11, 0.075), transparent 60%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }

a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-strong); text-decoration: underline; }

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: 3px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 200;
    padding: 0.7rem 1.1rem;
    background: var(--color-panel);
    color: var(--color-text);
    border-radius: 0 0 var(--radius-small) 0;
}
.skip-link:focus { left: 0; }

/* Headings: light weight, and an explicit size every time. A weight of 200
   with an inherited size renders as thin grey mush, so no heading here is
   allowed to fall back to a browser default. */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--color-text);
    margin: 0 0 0.6em;
}
h1 { font-size: clamp(2rem, 4.4vw, 3rem); font-weight: 250; }
h2 { font-size: clamp(1.5rem, 3vw, 2.05rem); font-weight: 250; }
h3 { font-size: clamp(1.2rem, 2.1vw, 1.45rem); font-weight: 400; }
h4 { font-size: 1.1rem; font-weight: 600; }
h5, h6 { font-size: 0.98rem; font-weight: 600; }

p { margin: 0 0 1.15em; }
.text-muted { color: var(--color-text-muted); }

code, pre, textarea.snippet {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.9em;
}

/* --- Buttons: the one exempt shape. Rectangles with a small radius. ------- */
.btn, .cta-btn {
    display: inline-block;
    padding: 0.78rem 1.5rem;
    border: 1px solid transparent;
    border-radius: var(--radius-small);
    font-family: var(--font-display);
    font-size: 0.97rem;
    font-weight: 600;
    line-height: 1.2;
    text-align: center;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.15s;
}
.btn--primary, .cta-btn {
    background: var(--color-highlight);
    color: #14100a;
    border-color: var(--color-highlight);
}
.btn--primary:hover, .cta-btn:hover {
    background: #ffb02e;
    border-color: #ffb02e;
    color: #14100a;
    text-decoration: none;
    transform: translateY(-1px);
}
.btn--ghost {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border-strong);
}
.btn--ghost:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    text-decoration: none;
}
.btn[disabled] { opacity: 0.55; cursor: progress; transform: none; }

/* --- Eyebrow: bare uppercase text with a rule. No pill, no background. ---- */
.section-eyebrow, .reading-card__eyebrow, .hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    margin: 0 0 0.9rem;
    font-family: var(--font-display);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent-cyan);
}
.section-eyebrow::before, .reading-card__eyebrow::before, .hero__eyebrow::before {
    content: "";
    width: 1.9rem;
    height: 1px;
    background: currentColor;
}

/* --- Header ------------------------------------------------------------- */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    height: var(--header-height);
    background: rgba(6, 13, 26, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
    max-width: var(--content-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.site-brand { display: flex; flex-direction: column; justify-content: center; }
.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text);
    text-decoration: none;
}
.site-logo:hover { text-decoration: none; }
.site-logo__mark {
    width: 8px;
    height: 22px;
    border-radius: 4px;
    background: linear-gradient(to top, var(--temp-freezing), var(--temp-cold) 24%, var(--temp-warming) 50%, var(--temp-warm) 74%, var(--temp-hot));
    flex: 0 0 auto;
}
/* An explicit gap, never a trailing space: inline-flex blockifies its span
   children and a blockified inline box trims its own trailing whitespace. */
.site-logo__wordmark {
    display: inline-flex;
    align-items: baseline;
    gap: 0.28em;
    font-family: var(--font-display);
    font-size: 1.16rem;
    font-weight: 500;
    letter-spacing: -0.02em;
}
.site-logo__accent { color: var(--color-highlight); }
.site-logo__tagline {
    font-size: 0.7rem;
    font-style: italic;
    color: rgba(232, 238, 245, 0.62);
    margin-left: 1rem;
    line-height: 1.2;
}

/* --- Nav: plain text links only. Colour change on hover, nothing else. ---- */
.site-nav { margin-left: auto; }
.site-nav__list {
    display: flex;
    align-items: center;
    gap: 1.45rem;
    margin: 0;
    padding: 0;
    list-style: none;
}
.site-nav__item { position: relative; }
.site-nav__list a {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.93rem;
    font-weight: 500;
    color: var(--color-text-muted);
    padding: 0.4rem 0;
}
.site-nav__list a:hover,
.site-nav__list a.is-active { color: var(--color-accent); text-decoration: none; }

.nav-chevron {
    width: 0; height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    opacity: 0.8;
}

/* Click and focus driven, never bare hover: a hover-only panel drops the
   instant the pointer crosses the gap between trigger and panel. */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: -0.9rem;
    min-width: 230px;
    margin: 0;
    padding: 0.5rem 0;
    list-style: none;
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-card);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(4px);
    transition: opacity 0.15s, visibility 0.15s, transform 0.15s;
}
.site-nav__item--has-dropdown.is-open > .nav-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}
.nav-dropdown a { display: block; padding: 0.5rem 1.1rem; font-size: 0.9rem; }

.nav-hamburger {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-left: auto;
    padding: 0.35rem 0.5rem;
    background: none;
    border: 0;
    color: var(--color-text);
    cursor: pointer;
}
.nav-hamburger span:not(.nav-hamburger__label) {
    width: 24px; height: 2px; background: currentColor;
}
.nav-hamburger__label {
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.14em;
}

/* --- Layout ------------------------------------------------------------- */
.page-wrapper {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 2.4rem 1.5rem 4.5rem;
}
/* Full-bleed pages (the homepage) render their own .hero and .band sections,
   each with its own max-width inner. The wrapper gets out of the way entirely
   rather than boxing them. */
.page-wrapper--full { max-width: none; padding: 0; }
.page-wrapper--full > .content-layout { grid-template-columns: minmax(0, 1fr); gap: 0; }

.content-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 3rem;
    align-items: start;
}
.content-layout--single { grid-template-columns: minmax(0, 1fr); }

.breadcrumbs { margin: 0 0 1.6rem; }
.breadcrumbs__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0; padding: 0;
    list-style: none;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}
.breadcrumbs__item + .breadcrumbs__item::before { content: "/"; margin-right: 0.5rem; opacity: 0.5; }
.breadcrumbs__item.is-current span { color: var(--color-text); }

.prose { max-width: 74ch; }
.prose h2 { margin-top: 2.4rem; }
.prose h3 { margin-top: 1.9rem; }
.prose ul, .prose ol { padding-left: 1.3rem; margin: 0 0 1.2rem; }
.prose li { margin-bottom: 0.5rem; }
.prose blockquote {
    margin: 1.6rem 0;
    padding: 0.2rem 0 0.2rem 1.2rem;
    border-left: 2px solid var(--color-highlight);
    color: var(--color-text-muted);
    font-style: italic;
}
.prose table { width: 100%; border-collapse: collapse; margin: 1.6rem 0; font-size: 0.95rem; }
.prose th, .prose td { padding: 0.65rem 0.8rem; border-bottom: 1px solid var(--color-border); text-align: left; }
.prose th { color: var(--color-text); font-weight: 600; background: var(--color-panel-soft); }

/* --- Hero --------------------------------------------------------------- */
.hero {
    padding: 3.6rem 1.5rem 2.6rem;
    border-bottom: 1px solid var(--color-border);
    background:
        radial-gradient(760px 420px at 20% 0%, rgba(0, 212, 255, 0.13), transparent 60%),
        radial-gradient(640px 400px at 86% 16%, rgba(245, 158, 11, 0.11), transparent 62%);
}
.hero__inner { max-width: var(--content-width); margin: 0 auto; }
/* Hero heading hierarchy: the stable keyword-bearing eyebrow is the H1, the
   changeable marketing headline underneath it is the H2. Deliberate. */
h1.hero__eyebrow { margin-bottom: 1rem; }
.hero__headline {
    max-width: 19ch;
    margin: 0 0 1rem;
    font-size: clamp(2.3rem, 5.4vw, 3.9rem);
    font-weight: 200;
}
.hero__headline strong { font-weight: 400; color: var(--color-highlight); }
.hero__lede {
    max-width: 62ch;
    margin: 0 0 2.2rem;
    font-size: 1.16rem;
    color: var(--color-text-muted);
}

/* --- The thermometer widget --------------------------------------------- */
.thermometer { max-width: 760px; }
.thermometer__label {
    display: block;
    margin-bottom: 0.7rem;
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 400;
}
.thermometer__field { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.thermometer__input {
    flex: 1 1 260px;
    min-width: 0;
    padding: 0.85rem 1rem;
    font-family: var(--font-body);
    font-size: 1.02rem;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-small);
}
.thermometer__input::placeholder { color: #61748d; }
.thermometer__input:focus { border-color: var(--color-accent); outline: none; box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.18); }
.thermometer__submit { flex: 0 0 auto; }
.thermometer__note { margin: 0.85rem 0 0; font-size: 0.85rem; color: var(--color-text-muted); }

.thermometer__error {
    margin: 1rem 0 0;
    padding: 0.75rem 1rem;
    font-size: 0.93rem;
    color: #ffd7cc;
    background: rgba(255, 90, 31, 0.12);
    border: 1px solid rgba(255, 90, 31, 0.4);
    border-radius: var(--radius-small);
}

.thermometer__working {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 1.4rem;
    font-size: 0.93rem;
    color: var(--color-accent-cyan);
}
.thermometer__pulse {
    width: 9px; height: 9px;
    border-radius: 50%;
    background: var(--color-accent);
    animation: ir-pulse 1.1s ease-in-out infinite;
}
@keyframes ir-pulse { 0%, 100% { opacity: 0.25; transform: scale(0.8); } 50% { opacity: 1; transform: scale(1.25); } }
@media (prefers-reduced-motion: reduce) { .thermometer__pulse { animation: none; opacity: 1; } }

/* --- The result card ---------------------------------------------------- */
.reading-card {
    margin-top: 2.2rem;
    padding: 1.9rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-card);
}
.reading-card__url {
    margin: 0 0 0.6rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    word-break: break-all;
}
.reading-card__temp { display: flex; align-items: baseline; gap: 0.2rem; flex-wrap: wrap; }
.reading-card__degrees {
    font-family: var(--font-display);
    font-size: clamp(3.4rem, 9vw, 5rem);
    font-weight: 200;
    line-height: 1;
    letter-spacing: -0.04em;
}
.reading-card__unit {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 2.8rem);
    font-weight: 200;
    line-height: 1;
}
.reading-card__band {
    margin-left: 0.9rem;
    font-family: var(--font-display);
    font-size: 1.28rem;
    font-weight: 600;
}
.reading-card__verdict {
    max-width: 68ch;
    margin: 1.2rem 0 0;
    color: var(--color-text-muted);
}

/* Band colouring, applied from one place so every surface agrees. */
[data-band="freezing"] .reading-card__degrees, [data-band="freezing"] .reading-card__unit,
[data-band="freezing"] .reading-card__band { color: var(--temp-freezing); }
[data-band="cold"] .reading-card__degrees, [data-band="cold"] .reading-card__unit,
[data-band="cold"] .reading-card__band { color: var(--temp-cold); }
[data-band="warming"] .reading-card__degrees, [data-band="warming"] .reading-card__unit,
[data-band="warming"] .reading-card__band { color: var(--temp-warming); }
[data-band="warm"] .reading-card__degrees, [data-band="warm"] .reading-card__unit,
[data-band="warm"] .reading-card__band { color: var(--temp-warm); }
[data-band="hot"] .reading-card__degrees, [data-band="hot"] .reading-card__unit,
[data-band="hot"] .reading-card__band { color: var(--temp-hot); }

/* --- The gauge ---------------------------------------------------------- */
.gauge { position: relative; margin: 1.6rem 0 0.4rem; padding-bottom: 1.6rem; }
.gauge__track {
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(to right,
        var(--temp-freezing) 0%,
        var(--temp-cold) 26%,
        var(--temp-warming) 52%,
        var(--temp-warm) 74%,
        var(--temp-hot) 100%);
    opacity: 0.85;
}
.gauge__marker {
    position: absolute;
    top: -6px;
    width: 4px;
    height: 20px;
    margin-left: -2px;
    border-radius: 2px;
    background: var(--color-text);
    box-shadow: 0 0 0 3px rgba(6, 13, 26, 0.85);
    transition: left 0.05s linear;
}
.gauge__scale {
    display: flex;
    justify-content: space-between;
    margin: 0.7rem 0 0;
    padding: 0;
    list-style: none;
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}
.gauge__step[data-band="freezing"] { color: var(--temp-freezing); }
.gauge__step[data-band="cold"] { color: var(--temp-cold); }
.gauge__step[data-band="warming"] { color: var(--temp-warming); }
.gauge__step[data-band="warm"] { color: var(--temp-warm); }
.gauge__step[data-band="hot"] { color: var(--temp-hot); }

/* --- Four reading tiles -------------------------------------------------- */
.reading-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1rem;
    margin: 2.1rem 0 0;
}
.reading-tile {
    padding: 1.05rem 1.1rem 1.15rem;
    background: var(--color-panel-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
}
.reading-tile__head { display: flex; align-items: baseline; justify-content: space-between; gap: 0.6rem; }
.reading-tile__label { font-family: var(--font-display); font-size: 0.93rem; font-weight: 600; }
.reading-tile__temp { font-family: var(--font-display); font-size: 1.5rem; font-weight: 300; }
.reading-tile__bar { height: 4px; margin: 0.7rem 0 0.75rem; border-radius: 2px; background: rgba(255,255,255,0.07); }
.reading-tile__bar span { display: block; height: 100%; border-radius: 2px; background: var(--color-accent); }
.reading-tile__question { margin: 0; font-size: 0.83rem; line-height: 1.55; color: var(--color-text-muted); }

.reading-tile[data-band="freezing"] .reading-tile__temp { color: var(--temp-freezing); }
.reading-tile[data-band="freezing"] .reading-tile__bar span { background: var(--temp-freezing); }
.reading-tile[data-band="cold"] .reading-tile__temp { color: var(--temp-cold); }
.reading-tile[data-band="cold"] .reading-tile__bar span { background: var(--temp-cold); }
.reading-tile[data-band="warming"] .reading-tile__temp { color: var(--temp-warming); }
.reading-tile[data-band="warming"] .reading-tile__bar span { background: var(--temp-warming); }
.reading-tile[data-band="warm"] .reading-tile__temp { color: var(--temp-warm); }
.reading-tile[data-band="warm"] .reading-tile__bar span { background: var(--temp-warm); }
.reading-tile[data-band="hot"] .reading-tile__temp { color: var(--temp-hot); }
.reading-tile[data-band="hot"] .reading-tile__bar span { background: var(--temp-hot); }

/* --- Strengths and problems --------------------------------------------- */
.reading-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 1.6rem 2.4rem;
    margin-top: 2.2rem;
}
.reading-column__heading {
    margin: 0 0 0.9rem;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}
.reading-column__heading--good { color: var(--color-accent-cyan); }
.reading-column__heading--bad { color: var(--temp-warm); }

.reading-list { margin: 0; padding: 0; list-style: none; }
.reading-list__item {
    padding: 0.8rem 0 0.9rem 0.95rem;
    border-top: 1px solid var(--color-border);
    border-left: 2px solid transparent;
}
.reading-list__item:last-child { border-bottom: 1px solid var(--color-border); }
.reading-list__item--good { border-left-color: var(--color-accent-cyan); }
.reading-list__item--bad { border-left-color: var(--temp-warm); }
.reading-list__label { display: block; font-weight: 600; font-size: 0.96rem; }
.reading-list__reading {
    display: block;
    margin: 0.15rem 0 0.35rem;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}
.reading-list__detail { display: block; font-size: 0.89rem; line-height: 1.55; color: var(--color-text-muted); }
.reading-list__empty { padding: 0.8rem 0; color: var(--color-text-muted); font-size: 0.92rem; }

.reading-card__foot { margin-top: 2.2rem; padding-top: 1.5rem; border-top: 1px solid var(--color-border); }
.reading-card__withheld { max-width: 68ch; margin: 0 0 1.3rem; font-size: 0.95rem; color: var(--color-text); }
.reading-card__actions { display: flex; flex-wrap: wrap; gap: 0.7rem; }
.reading-card__meta { margin: 1.2rem 0 0; font-size: 0.78rem; color: var(--color-text-muted); }

/* --- Generic section furniture ------------------------------------------ */
.band { padding: 3.4rem 1.5rem; border-top: 1px solid var(--color-border); }
.band--panel { background: var(--color-surface); }
.band__inner { max-width: var(--content-width); margin: 0 auto; }
.band__lede { max-width: 66ch; color: var(--color-text-muted); font-size: 1.05rem; }

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 1.2rem;
    margin-top: 2rem;
}
.card {
    display: block;
    padding: 1.4rem;
    background: var(--color-panel-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    color: inherit;
}
a.card:hover {
    border-color: var(--color-accent);
    text-decoration: none;
    box-shadow: var(--shadow-card-hover);
}
.card h3 { margin-bottom: 0.5rem; }
.card p { margin: 0; color: var(--color-text-muted); font-size: 0.94rem; }

.step-list { margin: 2rem 0 0; padding: 0; list-style: none; counter-reset: step; }
.step-list li {
    position: relative;
    padding: 0 0 1.4rem 3.3rem;
    counter-increment: step;
}
.step-list li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 2.2rem;
    height: 2.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    /* A rounded rectangle, never a circle. */
    border-radius: var(--radius-small);
    background: var(--color-panel);
    border: 1px solid var(--color-border-strong);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-accent);
}
.step-list strong { display: block; font-size: 1.05rem; font-weight: 600; margin-bottom: 0.2rem; }
.step-list p { margin: 0; color: var(--color-text-muted); }

/* --- Ladder (free / diagnostic / treatment) ------------------------------ */
.ladder { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.2rem; margin-top: 2rem; }
.ladder__step {
    display: flex;
    flex-direction: column;
    padding: 1.6rem;
    background: var(--color-panel-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
}
.ladder__step--featured { border-color: var(--color-highlight); background: var(--color-panel); }
.ladder__tier {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: var(--color-accent-cyan);
    margin-bottom: 0.6rem;
}
.ladder__price { font-family: var(--font-display); font-size: 1.7rem; font-weight: 300; margin-bottom: 0.4rem; }
.ladder__step ul { margin: 0.9rem 0 1.4rem; padding-left: 1.15rem; color: var(--color-text-muted); font-size: 0.93rem; }
.ladder__step li { margin-bottom: 0.45rem; }
.ladder__step .btn { margin-top: auto; }

/* --- Signal registry table ---------------------------------------------- */
.registry { margin-top: 2.2rem; }
.registry__group { margin-bottom: 2.6rem; }
.registry__group-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.registry__weight { font-size: 0.8rem; color: var(--color-text-muted); letter-spacing: 0.06em; }
.registry__question { max-width: 70ch; color: var(--color-text-muted); margin: 0 0 1.2rem; }
.registry__table { width: 100%; border-collapse: collapse; font-size: 0.94rem; }
.registry__table th, .registry__table td { padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--color-border); text-align: left; vertical-align: top; }
.registry__table th { font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-muted); font-weight: 600; }
.registry__table td:last-child, .registry__table th:last-child { text-align: right; white-space: nowrap; }

/* --- Temperature scale page --------------------------------------------- */
.scale-list { margin: 2.2rem 0 0; padding: 0; list-style: none; }
.scale-row {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 1.6rem;
    padding: 1.4rem 0;
    border-top: 1px solid var(--color-border);
}
.scale-row:last-child { border-bottom: 1px solid var(--color-border); }
.scale-row__range { font-family: var(--font-display); font-size: 1.45rem; font-weight: 300; }
.scale-row__label { display: block; font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 700; margin-top: 0.3rem; }
.scale-row[data-band="freezing"] .scale-row__range, .scale-row[data-band="freezing"] .scale-row__label { color: var(--temp-freezing); }
.scale-row[data-band="cold"] .scale-row__range, .scale-row[data-band="cold"] .scale-row__label { color: var(--temp-cold); }
.scale-row[data-band="warming"] .scale-row__range, .scale-row[data-band="warming"] .scale-row__label { color: var(--temp-warming); }
.scale-row[data-band="warm"] .scale-row__range, .scale-row[data-band="warm"] .scale-row__label { color: var(--temp-warm); }
.scale-row[data-band="hot"] .scale-row__range, .scale-row[data-band="hot"] .scale-row__label { color: var(--temp-hot); }
.scale-row__short { font-size: 1.05rem; font-weight: 600; margin: 0 0 0.5rem; }
.scale-row__blurb { margin: 0; color: var(--color-text-muted); max-width: 70ch; }

/* --- Compare ------------------------------------------------------------ */
.compare-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 0.8rem; align-items: end; }
.compare-form label { display: block; font-size: 0.83rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: 0.4rem; }
.compare-form input { width: 100%; padding: 0.8rem 1rem; font-size: 1rem; color: var(--color-text); background: var(--color-surface); border: 1px solid var(--color-border-strong); border-radius: var(--radius-small); }
.compare-form input:focus { border-color: var(--color-accent); outline: none; }
.compare-output { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.2rem; margin-top: 2rem; }
.compare-column { padding: 1.5rem; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-medium); }
.compare-column__host { margin: 0 0 0.4rem; font-size: 0.85rem; color: var(--color-text-muted); word-break: break-all; }
.compare-column__temp { margin: 0; font-family: var(--font-display); font-size: 3.2rem; font-weight: 200; line-height: 1; }
.compare-column__band { margin: 0.3rem 0 1rem; font-weight: 600; }
.compare-column[data-band="freezing"] .compare-column__temp, .compare-column[data-band="freezing"] .compare-column__band { color: var(--temp-freezing); }
.compare-column[data-band="cold"] .compare-column__temp, .compare-column[data-band="cold"] .compare-column__band { color: var(--temp-cold); }
.compare-column[data-band="warming"] .compare-column__temp, .compare-column[data-band="warming"] .compare-column__band { color: var(--temp-warming); }
.compare-column[data-band="warm"] .compare-column__temp, .compare-column[data-band="warm"] .compare-column__band { color: var(--temp-warm); }
.compare-column[data-band="hot"] .compare-column__temp, .compare-column[data-band="hot"] .compare-column__band { color: var(--temp-hot); }
.compare-column__rows { margin: 0; padding: 0; list-style: none; font-size: 0.9rem; }
.compare-column__rows li { display: flex; justify-content: space-between; gap: 1rem; padding: 0.45rem 0; border-top: 1px solid var(--color-border); }
.compare-verdict { margin-top: 1.6rem; font-size: 1.05rem; max-width: 70ch; }

/* --- Published readings (the dataset) ------------------------------------ */
.reading-index__grid, .directory-root__grid, .directory-listing-grid, .case-study-index__grid, .proof-index__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.2rem;
    margin-top: 2rem;
}
.reading-band-card, .directory-category-card, .directory-listing-card, .case-study-card, .proof-card {
    display: block;
    padding: 1.4rem;
    background: var(--color-panel-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    color: inherit;
}
.reading-band-card:hover, .directory-category-card:hover, .directory-listing-card:hover {
    border-color: var(--color-accent);
    text-decoration: none;
    box-shadow: var(--shadow-card-hover);
}
.reading-band-card h2, .directory-category-card h2 { font-size: 1.25rem; margin-bottom: 0.4rem; }
.reading-band-card p, .directory-category-card p, .directory-listing-card p { color: var(--color-text-muted); font-size: 0.93rem; margin: 0; }

.reading-row {
    display: grid;
    grid-template-columns: 74px minmax(0, 1fr) auto;
    gap: 1.2rem;
    align-items: center;
    padding: 1rem 0;
    border-top: 1px solid var(--color-border);
}
.reading-row:last-child { border-bottom: 1px solid var(--color-border); }
.reading-row__temp { font-family: var(--font-display); font-size: 1.85rem; font-weight: 300; line-height: 1; }
.reading-row[data-band="freezing"] .reading-row__temp { color: var(--temp-freezing); }
.reading-row[data-band="cold"] .reading-row__temp { color: var(--temp-cold); }
.reading-row[data-band="warming"] .reading-row__temp { color: var(--temp-warming); }
.reading-row[data-band="warm"] .reading-row__temp { color: var(--temp-warm); }
.reading-row[data-band="hot"] .reading-row__temp { color: var(--temp-hot); }
.reading-row__title { font-weight: 600; }
.reading-row__excerpt { display: block; font-size: 0.88rem; color: var(--color-text-muted); margin-top: 0.15rem; }
.reading-row__band { font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-muted); }

.reading-detail__readings { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1rem; margin: 2rem 0; }
.reading-detail__fields { margin: 1.8rem 0; }
.reading-detail__fields dt { font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-muted); }
.reading-detail__fields dd { margin: 0.2rem 0 1rem; word-break: break-word; }

/* --- Badge page --------------------------------------------------------- */
.badge-builder { margin-top: 2rem; }
.badge-preview { padding: 1.6rem; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-medium); }
textarea.snippet {
    width: 100%;
    min-height: 92px;
    margin-top: 1rem;
    padding: 0.9rem 1rem;
    color: var(--color-text);
    background: var(--color-panel-soft);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-small);
    resize: vertical;
}

/* --- Forms -------------------------------------------------------------- */
.form-grid { display: grid; gap: 1.1rem; max-width: 640px; margin-top: 2rem; }
.form-row label { display: block; margin-bottom: 0.4rem; font-size: 0.83rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-muted); }
.form-row input[type="text"], .form-row input[type="email"], .form-row textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-small);
}
.form-row textarea { min-height: 130px; resize: vertical; }
.form-row input:focus, .form-row textarea:focus { border-color: var(--color-accent); outline: none; }
.form-consent { display: flex; gap: 0.7rem; align-items: flex-start; font-size: 0.9rem; color: var(--color-text-muted); }
.form-consent input { margin-top: 0.3rem; }
.form-honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin: 0; padding: 0.85rem 1rem; border-radius: var(--radius-small); font-size: 0.94rem; }
.form-status--ok { color: #c9fff0; background: rgba(94, 234, 212, 0.12); border: 1px solid rgba(94, 234, 212, 0.4); }
.form-status--error { color: #ffd7cc; background: rgba(255, 90, 31, 0.12); border: 1px solid rgba(255, 90, 31, 0.4); }
.form-context { margin: 0 0 1rem; padding: 0.8rem 1rem; font-size: 0.92rem; background: var(--color-panel); border-left: 2px solid var(--color-highlight); border-radius: 0 var(--radius-small) var(--radius-small) 0; }

/* --- Glossary / FAQ ------------------------------------------------------ */
.glossary-index__letter-group { margin-bottom: 2.4rem; }
.glossary-index__letter-group h2 { font-size: 1.05rem; font-weight: 700; letter-spacing: 0.12em; color: var(--color-accent-cyan); }
.glossary-index__list { margin: 0; padding: 0; list-style: none; }
.glossary-index__list li { padding: 0.9rem 0; border-top: 1px solid var(--color-border); }
.glossary-index__list a { font-weight: 600; font-size: 1.04rem; }
.glossary-index__short-def { margin: 0.25rem 0 0; color: var(--color-text-muted); font-size: 0.93rem; }
.glossary-term__short-def { font-size: 1.14rem; color: var(--color-text); }
.glossary-term__aka { font-size: 0.88rem; color: var(--color-text-muted); }
.glossary-term__nuance { padding: 1.1rem 1.3rem; background: var(--color-panel-soft); border-left: 2px solid var(--color-accent); border-radius: 0 var(--radius-small) var(--radius-small) 0; }
.glossary-term__related ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem; }

.faq-index__group { margin-bottom: 2.4rem; }
.faq-index__list { margin: 0; padding: 0; list-style: none; }
.faq-index__list li { padding: 0.9rem 0; border-top: 1px solid var(--color-border); }
.faq-item__answer { max-width: 74ch; }

/* --- Sidebar ------------------------------------------------------------ */
.content-sidebar { position: sticky; top: calc(var(--header-height) + 1.5rem); }
.content-sidebar > * + * { margin-top: 1.4rem; }
.sidebar-block {
    padding: 1.2rem 1.3rem;
    background: var(--color-panel-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
}
.sidebar-block--cta { background: var(--color-panel); border-color: var(--color-border-strong); }
.sidebar-block__body { font-size: 0.92rem; color: var(--color-text-muted); }
.sidebar-block__body p:last-child { margin-bottom: 0; }
.sidebar-block .cta-btn { display: block; margin-top: 0.9rem; }
.sidebar-block__title { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--color-accent-cyan); margin-bottom: 0.7rem; }
.sidebar-block__links { list-style: none; margin: 0; padding: 0; }
.sidebar-block__links li { padding: 0.4rem 0; font-size: 0.93rem; }

/* --- Error page --------------------------------------------------------- */
.error-page { max-width: 62ch; padding: 2rem 0; }
.error-suggestions { margin-top: 1.6rem; }
.error-suggestions__label { font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-muted); }

/* --- Footer ------------------------------------------------------------- */
.site-footer {
    border-top: 1px solid var(--color-border);
    background: var(--color-surface-strong);
}
.site-footer__inner { max-width: var(--content-width); margin: 0 auto; padding: 3rem 1.5rem 2rem; }
.site-footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.4rem; }
.site-footer__brand-name { font-family: var(--font-display); font-size: 1.1rem; font-weight: 500; }
.site-footer__tagline { font-style: italic; color: rgba(232, 238, 245, 0.72); margin: 0.3rem 0 0.8rem; font-size: 0.93rem; }
.site-footer__note { color: var(--color-text-muted); font-size: 0.86rem; margin: 0; max-width: 34ch; }
.site-footer__col-heading { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--color-accent-cyan); margin-bottom: 0.9rem; }
.site-footer__links { list-style: none; margin: 0; padding: 0; }
.site-footer__links li { padding: 0.28rem 0; font-size: 0.9rem; }
.site-footer__links a { color: var(--color-text-muted); }
.site-footer__links a:hover { color: var(--color-accent); }
.site-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem 2rem;
    justify-content: space-between;
    margin-top: 2.4rem;
    padding-top: 1.4rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.81rem;
    color: var(--color-text-muted);
}

/* --- Responsive --------------------------------------------------------- */
@media (max-width: 1024px) {
    .content-layout { grid-template-columns: minmax(0, 1fr); gap: 2.4rem; }
    .site-footer__top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-hamburger { display: flex; }
    .site-logo__tagline { display: none; }

    /* Fixed overlay panel below the header bar, not an in-header expansion. */
    .site-nav {
        position: fixed;
        top: var(--header-height);
        left: 0; right: 0;
        bottom: 0;
        margin: 0;
        padding: 1.4rem 1.5rem 3rem;
        background: var(--color-bg);
        border-top: 1px solid var(--color-border);
        overflow-y: auto;
        transform: translateX(-100%);
        visibility: hidden;
        transition: transform 0.2s ease, visibility 0.2s;
    }
    .site-nav.is-open { transform: translateX(0); visibility: visible; }
    body.is-nav-open { overflow: hidden; }
    .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
    .site-nav__list > li > a { font-size: 1.2rem; padding: 0.85rem 0; border-bottom: 1px solid var(--color-border); }

    /* A dropdown's parent link just navigates on mobile, so the children show
       inline underneath it rather than behind a second tap target. */
    .nav-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: none;
        min-width: 0;
        background: none;
        border: 0;
        box-shadow: none;
        padding: 0.3rem 0 0.7rem 1rem;
    }
    .nav-dropdown a { font-size: 1rem; padding: 0.5rem 0; color: var(--color-text-muted); }

    .reading-row { grid-template-columns: 60px minmax(0, 1fr); }
    .reading-row__band { grid-column: 2; }
    .scale-row { grid-template-columns: minmax(0, 1fr); gap: 0.6rem; }

    /* Footer: one column, and roughly double the desktop text size. A footer
       that is legible at desktop scale is too small to read or tap at phone
       width. */
    .site-footer__top { grid-template-columns: 1fr; gap: 2rem; }
    .site-footer__brand-name { font-size: 1.6rem; }
    .site-footer__tagline { font-size: 1.15rem; }
    .site-footer__note { font-size: 1.05rem; max-width: none; }
    .site-footer__col-heading { font-size: 1.05rem; }
    .site-footer__links li { font-size: 1.15rem; padding: 0.5rem 0; }
    .site-footer__bottom { font-size: 1rem; }
}

@media (max-width: 520px) {
    .thermometer__field { flex-direction: column; align-items: stretch; }
    .thermometer__submit { width: 100%; }
    .reading-card { padding: 1.3rem; }
    .reading-card__band { margin-left: 0; display: block; width: 100%; }
}