/*
 * JEM Instrumentation and Controls Ltd
 * Lightweight, responsive styling with no external dependencies.
 */

:root {
    --colour-ink: #111827;
    --colour-ink-soft: #374151;
    --colour-muted: #6b7280;
    --colour-line: #dbe2ea;
    --colour-bg: #ffffff;
    --colour-bg-soft: #f4f7fb;
    --colour-bg-dark: #08111f;
    --colour-bg-dark-2: #0f1f33;
    --colour-accent: #1f7a8c;
    --colour-accent-strong: #14596a;
    --colour-accent-soft: #dff3f6;
    --colour-warning-soft: #fff7dd;
    --shadow-soft: 0 18px 55px rgba(8, 17, 31, 0.12);
    --shadow-card: 0 12px 30px rgba(8, 17, 31, 0.08);
    --radius-sm: 0.75rem;
    --radius-md: 1.15rem;
    --radius-lg: 1.75rem;
    --container: 1180px;
    --header-height: 78px;
    --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behaviour: smooth;
}

body {
    margin: 0;
    font-family: var(--font-main);
    colour: var(--colour-ink);
    color: var(--colour-ink);
    background: var(--colour-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a {
    color: inherit;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
}

a:hover {
    color: var(--colour-accent-strong);
}

img,
svg {
    display: block;
    max-width: 100%;
}

button,
input,
textarea,
select {
    font: inherit;
}

:focus-visible {
    outline: 3px solid var(--colour-accent);
    outline-offset: 4px;
}

.skip-link {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 100;
    padding: 0.7rem 1rem;
    border-radius: 999px;
    background: var(--colour-bg);
    color: var(--colour-ink);
    transform: translateY(-160%);
    transition: transform 0.2s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.container {
    width: min(100% - 2rem, var(--container));
    margin-inline: auto;
}

.narrow {
    width: min(100% - 2rem, 850px);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid rgba(219, 226, 234, 0.85);
    backdrop-filter: blur(16px);
}

.header-inner {
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.brand:hover {
    color: var(--colour-ink);
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 3.1rem;
    height: 3.1rem;
    border-radius: 1rem;
    background: linear-gradient(135deg, var(--colour-accent), var(--colour-bg-dark-2));
    color: #fff;
    font-weight: 800;
    letter-spacing: 0.06em;
    box-shadow: var(--shadow-card);
}

.brand-text {
    display: grid;
    gap: 0.05rem;
}

.brand-text strong {
    font-size: 1.15rem;
    line-height: 1.1;
}

.brand-text span {
    font-size: 0.82rem;
    color: var(--colour-muted);
}

.primary-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.primary-nav a,
.mobile-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 2.5rem;
    padding: 0.55rem 0.8rem;
    border-radius: 999px;
    color: var(--colour-ink-soft);
    font-weight: 650;
    text-decoration: none;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"],
.mobile-nav a:hover,
.mobile-nav a[aria-current="page"] {
    background: var(--colour-accent-soft);
    color: var(--colour-accent-strong);
}

.nav-toggle {
    display: none;
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid var(--colour-line);
    border-radius: 999px;
    background: var(--colour-bg);
    cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
    display: block;
    width: 1.1rem;
    height: 2px;
    margin: 4px auto;
    background: var(--colour-ink);
}

.mobile-nav {
    border-top: 1px solid var(--colour-line);
    background: var(--colour-bg);
}

.mobile-nav-inner {
    display: grid;
    gap: 0.15rem;
    padding-block: 0.75rem 1rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.section {
    padding-block: clamp(4rem, 8vw, 7rem);
}

.section-muted {
    background: var(--colour-bg-soft);
}

.section-dark,
.site-footer {
    background:
        radial-gradient(circle at top left, rgba(31, 122, 140, 0.45), transparent 33rem),
        linear-gradient(135deg, var(--colour-bg-dark), var(--colour-bg-dark-2));
    color: #fff;
}

.hero {
    padding-block: clamp(5.5rem, 10vw, 8rem) clamp(4.75rem, 8vw, 7rem);
    overflow: hidden;
}

.hero-grid,
.split-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr);
    gap: clamp(2rem, 5vw, 5rem);
    align-items: center;
}

.align-start {
    align-items: start;
}

.eyebrow {
    margin: 0 0 0.85rem;
    color: var(--colour-accent);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.section-dark .eyebrow,
.hero .eyebrow,
.site-footer .eyebrow {
    color: #8be1ef;
}

h1,
h2,
h3 {
    margin: 0;
    line-height: 1.08;
    letter-spacing: -0.035em;
}

h1 {
    max-width: 13ch;
    font-size: clamp(3rem, 8vw, 6.8rem);
}

h2 {
    max-width: 17ch;
    font-size: clamp(2rem, 4vw, 3.45rem);
}

h3 {
    font-size: clamp(1.2rem, 2vw, 1.55rem);
}

p {
    margin-block: 0 1rem;
}

.lead,
.hero-subheading,
.section-heading > p,
.prose p {
    font-size: clamp(1.05rem, 1.5vw, 1.22rem);
}

.hero-subheading {
    max-width: 650px;
    margin-top: 1.3rem;
    color: rgba(255, 255, 255, 0.82);
}

.hero-actions,
.cta-band-actions,
.section-action {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    align-items: center;
    margin-top: 1.8rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    padding: 0.8rem 1.15rem;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 800;
    text-decoration: none;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.button:hover {
    transform: translateY(-1px);
}

.button-primary {
    background: var(--colour-accent);
    color: #fff;
    box-shadow: 0 12px 24px rgba(31, 122, 140, 0.3);
}

.button-primary:hover {
    background: var(--colour-accent-strong);
    color: #fff;
}

.button-ghost {
    border-color: rgba(255, 255, 255, 0.28);
    color: #fff;
}

.button-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.button-secondary {
    background: var(--colour-bg);
    border-color: var(--colour-line);
    color: var(--colour-ink);
}

.button-secondary:hover {
    background: var(--colour-accent-soft);
    color: var(--colour-accent-strong);
}

.hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    padding: 0;
    margin: 1.8rem 0 0;
    list-style: none;
}

.hero-points li {
    padding: 0.45rem 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.06);
}

.hero-panel {
    display: grid;
    gap: 1rem;
}

.panel-card-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.panel-card {
    min-height: 14rem;
    padding: 1.35rem;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(18px);
}

.panel-card-large {
    min-height: 19rem;
}

.panel-label {
    display: block;
    margin-bottom: 1rem;
    color: #8be1ef;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.panel-card strong {
    display: block;
    margin-bottom: 0.75rem;
    font-size: clamp(1.5rem, 3vw, 2.35rem);
    line-height: 1.05;
}

.panel-card p {
    color: rgba(255, 255, 255, 0.78);
}

.trust-strip {
    background: var(--colour-bg-soft);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    padding-block: 1.4rem;
}

.trust-item {
    padding: 1rem 1.1rem;
    border: 1px solid var(--colour-line);
    border-radius: var(--radius-md);
    background: var(--colour-bg);
}

.trust-item strong,
.trust-item span {
    display: block;
}

.trust-item strong {
    margin-bottom: 0.25rem;
}

.trust-item span {
    color: var(--colour-muted);
    font-size: 0.94rem;
}

.section-heading {
    max-width: 760px;
    margin-bottom: clamp(2rem, 5vw, 3.3rem);
}

.section-heading h2 {
    max-width: 21ch;
}

.section-heading-wide {
    max-width: 860px;
}

.section-heading-wide h2 {
    max-width: 24ch;
}

.prose {
    max-width: 720px;
}

.section-heading h2 + p,
.compact-heading h2 + p {
    margin-top: 1rem;
    color: var(--colour-ink-soft);
}

.section-dark .section-heading h2 + p,
.section-dark .compact-heading h2 + p {
    color: rgba(255, 255, 255, 0.78);
}

.compact-heading {
    max-width: 900px;
}

.cards-grid {
    display: grid;
    gap: 1.25rem;
}

.cards-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.sector-card,
.notice-card,
.feature-list article,
.related-card {
    border: 1px solid var(--colour-line);
    border-radius: var(--radius-lg);
    background: var(--colour-bg);
    box-shadow: var(--shadow-card);
}

.card,
.sector-card,
.notice-card,
.feature-list article {
    padding: 1.45rem;
}

.service-card {
    display: grid;
    align-content: start;
    gap: 1rem;
    min-height: 100%;
}

.service-card p,
.sector-card p,
.feature-list p,
.notice-card p {
    color: var(--colour-ink-soft);
}

.service-card h3,
.sector-card h3,
.feature-list h3 {
    letter-spacing: -0.02em;
}

.card-icon {
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 0.85rem;
    background:
        linear-gradient(135deg, var(--colour-accent), transparent),
        var(--colour-accent-soft);
}

.tick-list {
    padding: 0;
    margin: 0;
    list-style: none;
}

.tick-list li {
    position: relative;
    padding-left: 1.35rem;
}

.tick-list li::before {
    content: "";
    position: absolute;
    top: 0.7em;
    left: 0;
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 999px;
    background: var(--colour-accent);
}

.compact-list {
    display: grid;
    gap: 0.25rem;
    color: var(--colour-muted);
    font-size: 0.94rem;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    width: fit-content;
    margin-top: 0.25rem;
    color: var(--colour-accent-strong);
    font-weight: 800;
    text-decoration: none;
}

.text-link:hover {
    text-decoration: underline;
}

.feature-list {
    display: grid;
    gap: 1rem;
}

.feature-list article {
    box-shadow: none;
}

.feature-list h3 {
    margin-bottom: 0.6rem;
}

.logo-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    padding: 0;
    margin: 2rem 0 0;
    list-style: none;
}

.logo-list li {
    padding: 0.75rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.84);
    font-weight: 750;
}

.sector-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1rem;
}

.sector-card {
    min-height: 13rem;
    box-shadow: none;
}

.cta-band {
    padding-block: clamp(3rem, 6vw, 4.6rem);
    background: var(--colour-accent-soft);
}

.cta-band-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.cta-band h2 {
    max-width: 18ch;
}

.cta-band p {
    max-width: 700px;
    margin-top: 0.8rem;
    color: var(--colour-ink-soft);
}

.breadcrumbs {
    border-bottom: 1px solid var(--colour-line);
    background: var(--colour-bg-soft);
}

.breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    padding: 0.75rem 0;
    margin: 0;
    list-style: none;
    color: var(--colour-muted);
    font-size: 0.9rem;
}

.breadcrumbs li + li::before {
    content: "/";
    margin-right: 0.45rem;
    color: var(--colour-muted);
}

.page-hero-simple {
    background: var(--colour-bg-soft);
}

.page-hero-simple h1 {
    max-width: 16ch;
    font-size: clamp(2.6rem, 5vw, 5rem);
}

.notice-card {
    margin-top: 2rem;
    background: var(--colour-warning-soft);
    box-shadow: none;
}

.notice-card code {
    padding: 0.15rem 0.35rem;
    border-radius: 0.35rem;
    background: rgba(255, 255, 255, 0.7);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.related-card {
    display: flex;
    align-items: center;
    min-height: 5.5rem;
    padding: 1.15rem;
    font-weight: 800;
    text-decoration: none;
}

.related-card:hover {
    background: var(--colour-accent-soft);
}

.faq-list {
    display: grid;
    gap: 0.8rem;
    margin-top: 2rem;
}

.faq-list details {
    border: 1px solid var(--colour-line);
    border-radius: var(--radius-md);
    background: var(--colour-bg);
}

.faq-list summary {
    cursor: pointer;
    padding: 1rem 1.15rem;
    font-weight: 800;
}

.faq-list p {
    padding: 0 1.15rem 1.15rem;
    color: var(--colour-ink-soft);
}

.site-footer {
    padding-block: clamp(3rem, 6vw, 5rem) 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 0.8fr 1fr;
    gap: 2rem;
}

.brand-footer {
    margin-bottom: 1rem;
}

.site-footer p,
.site-footer li,
.site-footer a,
.site-footer .brand-text span {
    color: rgba(255, 255, 255, 0.76);
}

.site-footer h2 {
    margin-bottom: 1rem;
    font-size: 1rem;
    letter-spacing: 0;
}

.footer-list {
    display: grid;
    gap: 0.55rem;
    padding: 0;
    margin: 0;
    list-style: none;
}

.footer-list a {
    text-decoration: none;
}

.footer-list a:hover {
    color: #fff;
    text-decoration: underline;
}

.footer-note {
    max-width: 34rem;
    font-size: 0.9rem;
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 1.5rem;
    margin-top: 2.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin: 0;
}

@media (max-width: 1100px) {
    .cards-grid-3,
    .sector-grid,
    .related-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .primary-nav {
        display: none;
    }

    .nav-toggle {
        display: block;
    }

    .hero-grid,
    .split-grid,
    .cta-band-inner {
        grid-template-columns: 1fr;
    }

    .cta-band-inner {
        display: grid;
    }

    h1 {
        max-width: 11ch;
    }
}

@media (max-width: 680px) {
    :root {
        --header-height: 68px;
    }

    .container {
        width: min(100% - 1.25rem, var(--container));
    }

    .brand-mark {
        width: 2.7rem;
        height: 2.7rem;
        border-radius: 0.85rem;
    }

    .brand-text span {
        display: none;
    }

    .hero,
    .section {
        padding-block: 3.5rem;
    }

    .cards-grid-3,
    .sector-grid,
    .related-grid,
    .panel-card-row,
    .trust-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .hero-actions,
    .cta-band-actions,
    .section-action {
        align-items: stretch;
        flex-direction: column;
    }

    .button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behaviour: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

.cards-grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr 0.9fr;
    gap: 1.25rem;
    align-items: stretch;
}

.contact-card {
    display: grid;
    align-content: start;
    gap: 0.75rem;
    min-height: 100%;
}

.contact-card h2 {
    max-width: none;
    font-size: clamp(1.6rem, 2.8vw, 2.4rem);
}

.contact-link {
    color: var(--colour-accent-strong);
    font-size: clamp(1.55rem, 3vw, 2.25rem);
    font-weight: 850;
    text-decoration: none;
}

.contact-link:hover {
    text-decoration: underline;
}

.related-grid-compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (max-width: 1100px) {
    .cards-grid-4,
    .contact-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 680px) {
    .cards-grid-4,
    .contact-grid,
    .related-grid-compact {
        grid-template-columns: 1fr;
    }
}