@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Serif:wght@500;600;700&display=swap');

:root {
    --c-bg: #ffffff;
    --c-text: #0f172a;
    --c-muted: #334155;
    --c-primary: #2b3242;
    --c-accent: #006594;
    --c-line: #a7bfdf;
    --c-error: #cc3030;
    --c-transparent: transparent;
    --radius: 14px;
    --container: 1160px;
    --shadow-nav: 0 12px 28px rgba(10, 29, 52, 0.1);
    --shadow-card: 0 10px 24px rgba(15, 23, 42, 0.1);
    --shadow-process: 0 10px 22px rgba(15, 23, 42, 0.1);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: 'IBM Plex Sans', 'Segoe UI', sans-serif;
    color: var(--c-text);
    line-height: 1.65;
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -100px;
    z-index: 120;
    padding: 0.6rem 0.8rem;
    border-radius: 8px;
    border: 1px solid var(--c-line);
    background: var(--c-bg);
    color: var(--c-text);
    font-weight: 700;
}

.skip-link:focus {
    top: 1rem;
}

a {
    color: inherit;
    text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--c-accent);
    outline-offset: 2px;
}

.container {
    width: min(var(--container), calc(100% - 2.4rem));
    margin: 0 auto;
}

.section {
    padding: 3.1rem 0;
    content-visibility: auto;
    contain-intrinsic-size: 600px;
}

.section-muted {
    background: transparent;
    border-top-color: transparent;
    border-bottom-color: transparent;
}

main .page-section:not(.hero) {
    background: var(--c-bg);
    color: var(--c-text);
    border-top: 1px solid var(--c-line);
}

main .page-section:not(.hero):nth-of-type(even) {
    background: var(--c-text);
    color: var(--c-bg);
}

main .page-section:not(.hero) > .container > .section-head .eyebrow,
main .page-section:not(.hero) > .container > .section-head h2,
main .page-section:not(.hero) > .container > p {
    color: inherit;
}

.eyebrow {
    margin: 0 0 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 1rem;
    font-weight: 700;
    color: var(--c-primary);
}

h1,
h2,
h3,
.site-header {
    font-family: 'IBM Plex Serif', 'Newsreader', serif;
}

h1,
h2,
h3 {
    line-height: 1.2;
    margin-top: 0;
    letter-spacing: -0.01em;
}

h1 {
    font-size: clamp(2rem, 1.3rem + 2.6vw, 3.1rem);
    margin-bottom: 1.1rem;
}

h2 {
    font-size: clamp(1.5rem, 1.15rem + 1.1vw, 2rem);
    margin-bottom: 0.9rem;
}

h3 {
    font-size: 1.16rem;
    margin-bottom: 0.6rem;
    border-bottom: 1px solid var(--c-line);
}

p {
    margin-top: 0;
    color: var(--c-muted);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    border-bottom: 1px solid var(--c-line);
    backdrop-filter: blur(8px);
    background: var(--c-text);
}

.logo-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 78px;
}

.brand-logo {
    width: 100%;
    max-width: 320px;
    height: auto;
    display: block;
}

.nav-pane {
    position: fixed;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 35;
    display: grid;
    gap: 0.4rem;
    padding: 0.55rem;
    border: 1px solid var(--c-line);
    border-radius: 12px;
    background: var(--c-bg);
    box-shadow: var(--shadow-nav);
}

.nav-pane a {
    font-size: 0.8rem;
    padding: 0.4rem 0.55rem;
    border-radius: 8px;
    color: var(--c-primary);
    font-weight: 700;
}

.nav-pane a:hover,
.nav-pane a.active {
    background: var(--c-primary);
    color: var(--c-bg);
}

.page-section[id] {
    scroll-margin-top: 96px;
}

.hero {
    position: relative;
    overflow: hidden;
    padding: 3.4rem 0 3rem;
    min-height: 72vh;
    display: flex;
    align-items: center;
    isolation: isolate;
    background-color: var(--c-text);
    background-image:
        linear-gradient(135deg, rgba(15, 23, 42, 0.82) 55%, rgba(0, 101, 148, 0.72) 100%),
        url("../assets/images/hero-aviation-engineering.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-geo-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.9;
    pointer-events: none;
}

.hero-layout {
    display: grid;
    grid-template-columns: 1fr;
    justify-items: center;
}

.hero-copy {
    position: relative;
    z-index: 2;
    max-width: 860px;
    padding: 1.2rem 0;
}

.hero-copy .eyebrow,
.hero-copy h1,
.hero-copy p {
    color: var(--c-bg);
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.6rem;
    justify-content: flex-end;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.9rem;
    padding: 0 1.2rem;
    border-radius: 9px;
    border: 1px solid transparent;
    background: var(--c-text);
    color: var(--c-bg);
    font-size: 0.93rem;
    font-weight: 700;
    transition: transform 0.2s ease, background 0.2s ease;
}

.btn:hover {
    background: var(--c-bg);
    transform: translateY(-1px);
    color: var(--c-text);
    border-color: var(--c-text);
}


.btn-secondary {
    background: var(--c-transparent);
    border-color: var(--c-primary);
    color: var(--c-primary);
}

.hero-copy .btn-secondary {
    border-color: var(--c-bg);
    color: var(--c-bg);
}

.hero-copy .btn-secondary:hover {
    background: var(--c-bg);
    color: var(--c-primary);
}

.section-head {
    margin-bottom: 1.4rem;
}


.cards {
    display: grid;
    gap: 1rem;
}

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

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

.card {
    padding: 1.35rem;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    background: var(--c-bg);
    overflow: hidden;
}

.card h2,
.service-card-link h2 {
    color: var(--c-text);
}

.card > h3,
.service-card-link > h3 {
    color: var(--c-text);
    margin: -1.35rem -1.35rem 0.9rem;
    padding: 0.8rem 1.1rem;
}

.card > p,
.card > ul,
.service-card-link > p {
    color: var(--c-muted);
    padding-inline: 0.05rem;
}

.service-card-link {
    display: block;
    height: 100%;
    color: inherit;
}

.service-card-link:hover h3 {
    text-decoration: underline;
}

.card-list {
    margin: 0;
    list-style-position: inside;
    padding-left: 0.05rem;
    padding-right: 0.05rem;
}

.card-list li {
    color: var(--c-muted);
    padding-left: 0.35rem;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.9rem;
    margin-top: 1rem;
}

.process-step {
    padding: 1.2rem;
    border: 1px solid var(--c-line);
    border-top: 4px solid var(--c-accent);
    border-radius: var(--radius);
    box-shadow: var(--shadow-process);
    background: var(--c-bg);
}

.delivery-formats-card > h3 {

    background: var(--c-text);
    color: var(--c-bg);
}



.contact-highlight {
    background: inherit;
}

.contact-highlight .container {
    width: min(812px, calc(100% - 2.4rem));
}

.contact-highlight .card {
    border-color: var(--c-line);
    background: var(--c-bg);
}

.contact-form {
    display: grid;
    gap: 0.7rem;
}

.form-group {
    display: grid;
    gap: 0.2rem;
}

.form-group label {
    font-weight: 650;
    color: var(--c-primary);
    font-size: 0.92rem;
}

.form-group input:not([type="checkbox"]),
.form-group select,
.form-group textarea {
    width: 100%;
    border: 1px solid var(--c-line);
    border-radius: 9px;
    background: var(--c-bg);
    color: var(--c-text);
    padding: 0.74rem 0.78rem;
    font: inherit;
}

.form-group input:not([type="checkbox"]):focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: 2px solid var(--c-accent);
    border-color: var(--c-accent);
}

.consent-group {
    gap: 0;
}

.checkbox-field {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.75rem;
    align-items: start;
    font-weight: 500;
    color: var(--c-text);
    line-height: 1.55;
}

.checkbox-field input[type="checkbox"] {
    width: 1.05rem;
    height: 1.05rem;
    margin-top: 0.2rem;
    accent-color: var(--c-accent);
}

.checkbox-field input[type="checkbox"]:focus {
    outline-offset: 2px;
}

.field-error {
    border-color: var(--c-error) !important;
    background: #fff1f1 !important;
}

.form-group input.field-error::placeholder,
.form-group textarea.field-error::placeholder {
    color: #b26a6a;
}

.form-status {
    min-height: 0;
    margin: 0;
    font-size: 0.9rem;
    color: var(--c-muted);
}

.form-status-error {
    color: var(--c-error);
}

.contact-form-shell[hidden] {
    display: none;
}

.submission-success-message {
    display: grid;
    gap: 1rem;
    margin-top: 0.5rem;
    padding: 1.35rem;
    border: 1px solid rgba(14, 165, 233, 0.26);
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(14, 165, 233, 0.08), rgba(255, 255, 255, 0.96));
    color: var(--c-text);
}

.submission-success-message[hidden] {
    display: none;
}

.submission-success-message h3,
.submission-success-message p {
    margin: 0;
}

.submission-success-message h3 {
    color: var(--c-text);
}

.success-message-block {
    display: grid;
    gap: 0.35rem;
    padding: 1rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(15, 23, 42, 0.08);
}

.success-message-label {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--c-muted);
}

.noscript-note {
    margin: 0;
    padding: 1rem;
    text-align: center;
    color: var(--c-bg);
    background: var(--c-error);
}

.site-footer {
    background: var(--c-text);
    color: var(--c-bg);
    border-top: 1px solid var(--c-line);
}

.copyright {
    margin: 0;
    border-top: 1px solid var(--c-line);
    padding: 0.9rem 1rem 1.2rem;
    text-align: center;
    font-size: 0.86rem;
    color: var(--c-bg);
}

.reveal,
.reveal-visible {
    opacity: 1;
    transform: none;
    transition: none;
}

@media (max-width: 1040px) {
    .nav-pane {
        display: none;
    }
}

@media (max-width: 980px) {
    .cards-3,
    .cards-2 {
        grid-template-columns: 1fr;
    }

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

    .logo-wrap {
        min-height: 72px;
    }

    .section {
        padding: 2.3rem 0;
    }

    .hero {
        min-height: 62vh;
        padding: 2.5rem 0 2.2rem;
    }

    .hero-copy {
        padding: 0.8rem 0;
    }

    .contact-highlight .container {
        width: calc(100% - 2.4rem);
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    * {
        animation: none !important;
        transition: none !important;
    }
}