/**
 * CADMasters Engineering Corporate UI
 * Premium international B2B presentation layer (AECOM / WSP / Jacobs tier)
 * Loaded globally — all CMS pages inherit automatically.
 */

/* ── Design tokens (Theme Manager bridge) ── */
:root {
    --cm-blue: var(--theme-primary, #0B3D91);
    --cm-blue-dark: var(--theme-secondary, #0057B8);
    --cm-accent: var(--theme-accent, #00AEEF);
    --cm-charcoal: var(--theme-dark, #0F172A);
    --cm-white: #ffffff;
    --cm-surface: var(--theme-light, #F8FAFC);
    --cm-steel-900: var(--theme-dark, #0F172A);
    --cm-steel-800: #1e293b;
    --cm-steel-700: #334155;
    --cm-steel-600: #475569;
    --cm-steel-500: #64748b;
    --cm-steel-400: #94a3b8;
    --cm-steel-300: #cbd5e1;
    --cm-steel-200: #e2e8f0;
    --cm-steel-100: #f1f5f9;
    --cm-steel-50: var(--theme-light, #F8FAFC);
    --cm-font-ui: var(--theme-body-font, 'Inter', system-ui, sans-serif);
    --cm-font-display: var(--theme-heading-font, 'Manrope', system-ui, sans-serif);
    --cm-shadow: 0 4px 24px rgba(11, 61, 145, 0.06);
    --cm-shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
    --cm-shadow-card: 0 1px 3px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.06);
    --cm-radius: 0.375rem;
    --cm-radius-lg: 0.75rem;
    --cm-radius-xl: 1rem;
    --cm-section-py: clamp(4rem, 8vw, 6rem);
    --cm-container: var(--container-width, var(--theme-container-width, 1280px));
    --cm-transition: 0.28s cubic-bezier(0.22, 1, 0.36, 1);
    --cm-grid-pattern: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 40V0h1v40H0zm39 0V0h1v40h-1zM0 0h40v1H0V0z' fill='%230B3D91' fill-opacity='0.04'/%3E%3C/svg%3E");
}

/* ── Base typography ── */
.cm-engineering-ui body,
body.cm-engineering-ui {
    font-family: var(--font-body, var(--cm-font-ui));
    color: var(--cm-steel-700);
    background: var(--cm-surface);
    font-size: var(--font-size-body, var(--theme-body-size, 1rem));
    line-height: var(--line-height-body, var(--theme-line-height, 1.6));
    -webkit-font-smoothing: antialiased;
}

.cm-engineering-ui h1,
.cm-engineering-ui h2,
.cm-engineering-ui h3,
.cm-engineering-ui h4,
.cm-engineering-ui h5,
.cm-engineering-ui h6,
.cm-engineering-ui .display-brand {
    font-family: var(--font-heading, var(--cm-font-display));
    color: var(--cm-charcoal);
    font-weight: var(--font-weight-heading, 700);
    letter-spacing: var(--letter-spacing-normal, normal);
}

.cm-engineering-ui .container {
    max-width: var(--cm-container);
}

/* ── Blueprint / engineering backgrounds ── */
.cm-engineering-ui .section-block {
    padding: var(--cm-section-py) 0;
    position: relative;
}

.cm-engineering-ui .section-block.alt-bg {
    background: var(--cm-white);
}

.cm-engineering-ui .section-block--pattern::before,
.cm-engineering-ui .section-block.alt-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: var(--cm-grid-pattern);
    opacity: 0.65;
    pointer-events: none;
    z-index: 0;
}

.cm-engineering-ui .section-block > .container {
    position: relative;
    z-index: 1;
}

/* ── Page loader ── */
.cm-page-loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cm-charcoal);
    transition: opacity 0.45s ease, visibility 0.45s ease;
}

.cm-page-loader.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.cm-page-loader__mark {
    width: 3rem;
    height: 3rem;
    border: 2px solid rgba(0, 174, 239, 0.25);
    border-top-color: var(--cm-accent);
    border-radius: 50%;
    animation: cmSpin 0.85s linear infinite;
    margin: 0 auto 1rem;
}

.cm-page-loader__text {
    color: #fff;
    font-family: var(--cm-font-display);
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-size: 0.75rem;
    margin: 0;
}

@keyframes cmSpin {
    to { transform: rotate(360deg); }
}

/* ── Header: transparent → solid on scroll ── */
.cm-engineering-ui .site-nav:not(.site-header--premium) {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--cm-steel-200);
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
    transition: background var(--cm-transition), padding var(--cm-transition), box-shadow var(--cm-transition), border-color var(--cm-transition);
}

.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero:not(.header-scrolled):not(.site-nav--scrolled) {
    background: transparent;
    backdrop-filter: blur(0);
    border-bottom: 1px solid transparent;
    box-shadow: none;
}

.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--scrolled,
.cm-engineering-ui .site-nav:not(.site-header--premium).header-scrolled,
.cm-engineering-ui .site-nav:not(.site-header--premium):not(.site-nav--over-hero) {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(14px);
    border-bottom-color: var(--cm-steel-200);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero:not(.header-scrolled):not(.site-nav--scrolled) .nav-link,
.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero:not(.header-scrolled):not(.site-nav--scrolled) .navbar-brand,
.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero:not(.header-scrolled):not(.site-nav--scrolled) .site-header__portal-link {
    color: #fff !important;
}

.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero:not(.header-scrolled):not(.site-nav--scrolled) .site-header__cta.btn-cta {
    background: var(--cm-blue);
    color: #fff !important;
}

.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero:not(.header-scrolled):not(.site-nav--scrolled) .navbar-toggler {
    filter: invert(1);
}

.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero.site-nav--scrolled .nav-link,
.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero.site-nav--scrolled .navbar-brand,
.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero.header-scrolled .nav-link,
.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero.header-scrolled .navbar-brand {
    color: var(--cm-steel-700) !important;
}

.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero.site-nav--scrolled .navbar-toggler,
.cm-engineering-ui .site-nav:not(.site-header--premium).site-nav--over-hero.header-scrolled .navbar-toggler {
    filter: none;
}

.cm-engineering-ui .site-nav .navbar-brand {
    font-family: var(--cm-font-display);
    font-weight: 800;
}

.cm-engineering-ui .site-nav .nav-link.active::after {
    background: var(--cm-accent);
}

.cm-engineering-ui .site-nav .dropdown-menu {
    border: none;
    box-shadow: var(--cm-shadow-lg);
    padding: 0.75rem;
    min-width: 15rem;
}

/* Mobile slide menu */
@media (max-width: 991.98px) {
    .cm-engineering-ui.cm-nav-open .site-nav .navbar-collapse {
        background: var(--cm-white);
        margin-top: 0.75rem;
        padding: 1rem;
        border-radius: var(--cm-radius-lg);
        box-shadow: var(--cm-shadow-lg);
    }
}

/* ── Buttons ── */
.cm-engineering-ui .btn-cta {
    background: var(--cm-blue);
    font-weight: 600;
    letter-spacing: 0.01em;
    border-radius: var(--cm-radius);
    transition: transform var(--cm-transition), background var(--cm-transition), box-shadow var(--cm-transition);
    box-shadow: 0 4px 14px rgba(11, 61, 145, 0.25);
}

.cm-engineering-ui .btn-cta:hover {
    background: var(--cm-blue-dark);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 20px rgba(11, 61, 145, 0.3);
    color: #fff !important;
}

.cm-engineering-ui .btn-outline-steel,
.cm-engineering-ui .btn-login {
    font-weight: 600;
    transition: transform var(--cm-transition), border-color var(--cm-transition), color var(--cm-transition);
}

.cm-engineering-ui .btn-outline-steel:hover,
.cm-engineering-ui .btn-login:hover {
    transform: translateY(-1px);
}

.cm-engineering-ui .hero-section--split {
    background: linear-gradient(135deg, var(--cm-charcoal) 0%, #0a2d6b 100%);
}

.cm-engineering-ui .hero-visual .cm-media--hero,
.cm-engineering-ui .hero-visual .media-presenter {
    height: 100%;
    min-height: 0;
}

.cm-engineering-ui .hero-visual .cm-media--hero .cm-media__img {
    width: 100%;
    height: 100%;
    min-height: 0;
    max-height: 100%;
    object-fit: cover;
}

/* ── Hero ── */
.cm-engineering-ui .hero-section {
    height: var(--hero-height, 500px);
    min-height: var(--hero-height, 500px);
    max-height: var(--hero-height, 500px);
    background: var(--cm-charcoal);
    display: flex;
    align-items: center;
    --hero-heading-color: var(--theme-text-primary, #ffffff);
    --hero-body-color: var(--theme-text-secondary, rgba(255, 255, 255, 0.85));
}

.cm-engineering-ui .hero-section.hero-dark {
    --hero-heading-color: #ffffff;
    --hero-body-color: rgba(255, 255, 255, 0.85);
}

.cm-engineering-ui .hero-section.hero-light {
    --hero-heading-color: #111827;
    --hero-body-color: #374151;
}

.cm-engineering-ui .hero-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--cm-grid-pattern);
    opacity: 0.35;
    pointer-events: none;
    z-index: 0;
}

.cm-engineering-ui .hero-section.has-bg-image::before {
    background: linear-gradient(105deg, rgba(15, 23, 42, 0.92) 0%, rgba(11, 61, 145, 0.55) 55%, rgba(15, 23, 42, 0.35) 100%);
}

.cm-engineering-ui .hero-section.hero-has-overlay::before {
    background: var(--hero-overlay-color);
    opacity: var(--hero-overlay-opacity, 1);
}

.cm-engineering-ui .hero-section.hero-has-overlay.has-bg-image::before {
    background: var(--hero-overlay-color);
}

.cm-engineering-ui .hero-content h1 {
    font-size: var(--hero-title-size, var(--hero-heading-size, var(--hero-heading-size-base, clamp(2.25rem, 5vw, 3.5rem))));
    font-weight: var(--hero-heading-weight, 700);
    line-height: var(--hero-heading-line-height, 1.15);
    max-width: 16ch;
    color: var(--hero-heading-color);
}

.cm-engineering-ui .hero-content .lead {
    color: var(--hero-body-color);
}

.cm-engineering-ui .hero-accent {
    background: var(--cm-accent);
    height: 4px;
    width: 3.5rem;
}

.cm-engineering-ui .hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.cm-engineering-ui .hero-stats__item strong {
    display: block;
    font-family: var(--cm-font-display);
    font-size: 1.75rem;
    color: var(--hero-heading-color, #fff);
}

.cm-engineering-ui .hero-stats__item span {
    font-size: 0.8125rem;
    color: var(--hero-body-color, rgba(255, 255, 255, 0.75));
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ── Section headers ── */
.cm-engineering-ui .section-header__label {
    color: var(--cm-accent);
    font-weight: 700;
    letter-spacing: 0.14em;
}

.cm-engineering-ui .section-header__title {
    font-size: clamp(1.85rem, 3.5vw, 2.65rem);
    font-weight: 800;
}

.cm-engineering-ui .section-header__description {
    font-size: 1.0625rem;
    color: var(--cm-steel-600);
    max-width: 42rem;
}

/* ── Premium cards ── */
.cm-engineering-ui .cm-card {
    background: var(--cm-white);
    border: 1px solid var(--cm-steel-200);
    border-radius: var(--cm-radius-xl);
    box-shadow: var(--cm-shadow-card);
    overflow: hidden;
    transition: transform var(--cm-transition), box-shadow var(--cm-transition), border-color var(--cm-transition);
}

.cm-engineering-ui .cm-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--cm-shadow-lg);
    border-color: rgba(0, 174, 239, 0.25);
}

.cm-engineering-ui .cm-card .card-img-top,
.cm-engineering-ui .cm-card .cm-media--cover .cm-media__img {
    height: 240px;
}

.cm-engineering-ui .cm-card--project .card-img-top,
.cm-engineering-ui .cm-card--project .cm-media--cover .cm-media__img {
    height: 260px;
}

.cm-engineering-ui .cm-card:hover .cm-media__img {
    transform: scale(1.06);
}

.cm-engineering-ui .cm-card .card-title {
    font-family: var(--cm-font-display);
    font-weight: 700;
    font-size: 1.125rem;
}

.cm-engineering-ui .cm-card .card-link {
    font-weight: 600;
    color: var(--cm-blue);
}

.cm-engineering-ui .cm-card .card-link i {
    transition: transform var(--cm-transition);
}

.cm-engineering-ui .cm-card:hover .card-link i {
    transform: translateX(5px);
}

/* Skeleton loading */
.cm-skeleton {
    background: linear-gradient(90deg, var(--cm-steel-100) 25%, var(--cm-steel-200) 50%, var(--cm-steel-100) 75%);
    background-size: 200% 100%;
    animation: cmShimmer 1.4s ease infinite;
    border-radius: var(--cm-radius);
}

@keyframes cmShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Statistics / counters ── */
.cm-engineering-ui .cm-stat-card {
    background: var(--cm-white);
    border: 1px solid var(--cm-steel-200);
    border-radius: var(--cm-radius-xl);
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--cm-shadow-card);
    transition: transform var(--cm-transition), box-shadow var(--cm-transition);
}

.cm-engineering-ui .cm-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--cm-shadow-lg);
}

.cm-engineering-ui .cm-stat-card__icon {
    width: 3rem;
    height: 3rem;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 174, 239, 0.1);
    color: var(--cm-blue);
    border-radius: var(--cm-radius);
    font-size: 1.25rem;
}

.cm-engineering-ui .cm-stat-card__value {
    font-family: var(--cm-font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--cm-charcoal);
    line-height: 1;
}

.cm-engineering-ui .cm-stat-card__label {
    font-weight: 600;
    color: var(--cm-steel-700);
    margin-top: 0.5rem;
}

.cm-engineering-ui .cm-stat-card__description {
    font-size: 0.875rem;
    color: var(--cm-steel-500);
    margin: 0.5rem 0 0;
}

/* ── Testimonials ── */
.cm-engineering-ui .testimonial-card {
    border-left: 4px solid var(--cm-accent);
    border-radius: var(--cm-radius-xl);
    box-shadow: var(--cm-shadow-card);
    padding: 2.25rem;
}

.cm-engineering-ui .carousel-control-prev-icon,
.cm-engineering-ui .carousel-control-next-icon {
    filter: invert(27%) sepia(89%) saturate(1500%) hue-rotate(196deg);
}

/* ── CTA band ── */
.cm-engineering-ui .cta-band {
    background: var(--cm-charcoal);
    padding: clamp(3.5rem, 7vw, 5rem) 0;
    position: relative;
    overflow: hidden;
}

.cm-engineering-ui .cta-band::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--cm-grid-pattern);
    opacity: 0.2;
}

.cm-engineering-ui .cta-band .container {
    position: relative;
    z-index: 1;
}

.cm-engineering-ui .cta-band h2 {
    font-size: clamp(1.75rem, 3vw, 2.35rem);
    font-weight: 800;
}

/* ── Team cards ── */
.cm-engineering-ui .team-card {
    background: var(--cm-white);
    border-radius: var(--cm-radius-xl);
    padding: 1.5rem;
    box-shadow: var(--cm-shadow-card);
    border: 1px solid var(--cm-steel-200);
    transition: transform var(--cm-transition), box-shadow var(--cm-transition);
}

.cm-engineering-ui .team-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--cm-shadow-lg);
}

.cm-engineering-ui .team-card .cm-media__img {
    border-radius: var(--cm-radius-lg);
}

/* ── Page header ── */
.cm-engineering-ui .page-header {
    background: var(--cm-charcoal);
    padding: clamp(3rem, 8vw, 5rem) 0 clamp(2.5rem, 5vw, 3.5rem);
    position: relative;
}

.cm-engineering-ui .page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--cm-grid-pattern);
    opacity: 0.25;
}

/* ── Forms ── */
.cm-engineering-ui .form-control:focus,
.cm-engineering-ui .form-select:focus {
    border-color: var(--cm-blue);
    box-shadow: 0 0 0 3px rgba(0, 174, 239, 0.2);
}

/* ── Footer ── */
.cm-engineering-ui .site-footer {
    background: var(--cm-charcoal);
    padding: clamp(3rem, 6vw, 4.5rem) 0 2rem;
    border-top: 3px solid var(--cm-accent);
}

.cm-engineering-ui .site-footer h5 {
    font-family: var(--cm-font-display);
    font-weight: 700;
    font-size: 0.8125rem;
    letter-spacing: 0.1em;
    color: #fff;
    margin-bottom: 1.25rem;
}

.cm-engineering-ui .site-footer a:hover {
    color: var(--cm-accent);
}

.cm-engineering-ui .footer-social-link:hover {
    background: var(--cm-accent);
    color: var(--cm-charcoal);
}

/* ── Projects masonry feel ── */
.cm-engineering-ui .projects-masonry .cm-card--project {
    height: 100%;
}

/* ── Back to top ── */
.cm-engineering-ui .cm-back-to-top {
    background: var(--cm-blue);
}

.cm-engineering-ui .cm-back-to-top:hover {
    background: var(--cm-accent);
}

/* ── Accessibility: focus states ── */
.cm-engineering-ui a:focus-visible,
.cm-engineering-ui button:focus-visible {
    outline: 2px solid var(--cm-accent);
    outline-offset: 2px;
}

/* ── Responsive breakpoints ── */
@media (max-width: 1440px) {
    :root { --cm-container: min(var(--theme-container-width, 1280px), 92vw); }
}

@media (max-width: 768px) {
    .cm-engineering-ui .hero-section {
        height: var(--hero-height-mobile, var(--hero-height, 500px));
        min-height: var(--hero-height-mobile, var(--hero-height, 500px));
        max-height: var(--hero-height-mobile, var(--hero-height, 500px));
    }
    .cm-engineering-ui .cm-card .card-img-top { height: 200px; }
}

@media (max-width: 375px) {
    .cm-engineering-ui .hero-actions { flex-direction: column; }
    .cm-engineering-ui .hero-actions .hero-btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    .cm-page-loader__mark { animation: none; }
    .cm-engineering-ui .cm-card:hover { transform: none; }
    .cm-engineering-ui .btn-cta:hover { transform: none; }
    [data-aos] { opacity: 1 !important; transform: none !important; }
}