/* ==========================================================================
   Layout — containers, sections, grids, header, navigation, footer
   Mobile-first: base rules target small screens, media queries add
   layout for larger ones. Breakpoints: 30em (480px), 37.5em (600px),
   48em (768px), 64em (1024px), 75em (1200px), 90em (1440px).
   ========================================================================== */

/* --------------------------------------------------------------------------
   Container
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: calc(var(--container-width) + var(--gutter) * 2);
    padding-inline: var(--gutter);
    margin-inline: auto;
}

.container--narrow {
    max-width: calc(var(--container-narrow) + var(--gutter) * 2);
}

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */
.section {
    padding-block: var(--section-space);
}

.section--alt {
    background-color: var(--color-surface-alt);
}

.section--flush-top {
    padding-top: 0;
}

/* Blueprint grid background (works on light and dark sections) */
.bg-grid {
    background-image:
        linear-gradient(rgb(255 255 255 / 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgb(255 255 255 / 0.045) 1px, transparent 1px);
    background-size: 32px 32px;
}

.bg-grid--light {
    background-image:
        linear-gradient(rgb(20 32 43 / 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgb(20 32 43 / 0.05) 1px, transparent 1px);
}

/* --------------------------------------------------------------------------
   Section heading block
   -------------------------------------------------------------------------- */
.section-head {
    max-width: 46rem;
    margin-bottom: clamp(2.25rem, 1.6rem + 2.4vw, 3.75rem);
}

.section-head__title {
    margin-top: var(--space-md);
}

.section-head__lead {
    margin-top: var(--space-md);
    font-size: var(--text-lg);
    color: var(--color-muted);
}

.section-head--center {
    margin-inline: auto;
    text-align: center;
}

.section-head--split {
    display: grid;
    gap: var(--space-lg);
    max-width: none;
}

.section-head--split .section-head__lead {
    margin-top: 0;
}

@media (min-width: 64em) {
    .section-head--split {
        grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
        gap: var(--space-3xl);
        align-items: end;
    }
}

/* Eyebrow label with a "dimension line": 01 |——| OUR SERVICES */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    line-height: 1.4;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--color-accent-text);
}

.eyebrow__index {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-variant-numeric: tabular-nums;
    color: var(--color-heading);
}

.eyebrow__index::after {
    content: "";
    width: 2.25rem;
    height: 9px;
    background: linear-gradient(currentColor, currentColor) center / 100% 1px no-repeat;
    border-inline: 1px solid currentColor;
    opacity: 0.55;
}

/* --------------------------------------------------------------------------
   Grids
   -------------------------------------------------------------------------- */
.grid {
    display: grid;
    gap: var(--space-lg);
}

@media (min-width: 37.5em) {
    .grid--3,
    .grid--4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 48em) {
    .grid--2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 64em) {
    .grid--3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 75em) {
    .grid--4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* Two-column media + text layout */
.split {
    display: grid;
    gap: clamp(2.5rem, 1.5rem + 4vw, 5.5rem);
    align-items: center;
}

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

@media (min-width: 64em) {
    .split {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* Main content + sidebar */
.with-sidebar {
    display: grid;
    gap: var(--space-3xl);
}

@media (min-width: 64em) {
    .with-sidebar {
        grid-template-columns: minmax(0, 1fr) 21rem;
        gap: clamp(3rem, 2rem + 3vw, 5rem);
        align-items: start;
    }

    /* Optional: keep a short sidebar in view while scrolling */
    .with-sidebar--sticky .with-sidebar__aside {
        position: sticky;
        top: calc(var(--header-height) + 2rem);
    }
}

/* --------------------------------------------------------------------------
   Top bar (desktop only)
   -------------------------------------------------------------------------- */
.topbar {
    display: none;
    font-size: var(--text-sm);
}

.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    min-height: 2.75rem;
}

.topbar__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xl);
}

.topbar__item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-muted);
}

.topbar__link {
    display: inline-block;
    padding-block: 0.25rem;
    color: var(--color-text);
    text-decoration: none;
}

.topbar__link:hover {
    color: var(--color-accent);
}

@media (min-width: 75em) {
    .topbar {
        display: block;
    }
}

/* --------------------------------------------------------------------------
   Site header
   Note: avoid transform, filter or backdrop-filter on the header —
   they would break the fixed-position mobile navigation panel.
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--duration-base) ease, border-color var(--duration-base) ease;
}

.site-header.is-scrolled {
    border-bottom-color: transparent;
    box-shadow: var(--shadow-md);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    min-height: var(--header-height);
}

.site-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Header button (.btn): hidden on small phones, where the menu contains it */
.site-header .site-header__cta {
    display: none;
}

@media (min-width: 40em) {
    .site-header .site-header__cta {
        display: inline-flex;
    }
}

/* --------------------------------------------------------------------------
   Logo (mark image + live text, easy to rename)
   -------------------------------------------------------------------------- */
.logo {
    display: inline-flex;
    flex-shrink: 0;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-heading);
    text-decoration: none;
}

.logo:hover {
    color: var(--color-heading);
}

.logo__mark {
    width: 2.5rem;
    height: 2.5rem;
}

.logo__text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo__name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: var(--weight-heavy);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.logo__tagline {
    margin-top: 0.35rem;
    font-size: 0.6875rem;
    font-weight: var(--weight-semibold);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   Primary navigation — mobile panel first, inline bar from 1200px
   -------------------------------------------------------------------------- */
.site-nav {
    position: fixed;
    inset: var(--header-height) 0 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    padding: var(--space-md) var(--gutter) var(--space-2xl);
    overflow-y: auto;
    overscroll-behavior: contain;
    background-color: var(--color-background);
    border-top: 1px solid var(--color-border);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-0.75rem);
    transition:
        opacity var(--duration-base) var(--ease-out),
        transform var(--duration-base) var(--ease-out),
        visibility 0s linear var(--duration-base);
}

.site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: none;
    transition-delay: 0s;
}

.site-nav__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 3.5rem;
    padding-block: var(--space-sm);
    font-family: var(--font-heading);
    font-size: 1.375rem;
    font-weight: var(--weight-bold);
    letter-spacing: var(--tracking-tight);
    color: var(--color-heading);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border);
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
    color: var(--color-accent-text);
}

.site-nav__extra {
    display: grid;
    gap: var(--space-lg);
}

.site-nav__contact {
    display: grid;
    gap: var(--space-sm);
    font-size: var(--text-sm);
}

.site-nav__contact a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    min-height: 2.75rem;
    color: var(--color-text);
    text-decoration: none;
}

/* Prevent page scrolling behind the open mobile menu */
.nav-open {
    overflow: hidden;
}

/* Hamburger toggle */
.nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    color: var(--color-heading);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.nav-toggle__icon,
.nav-toggle__icon::before,
.nav-toggle__icon::after {
    display: block;
    width: 1.25rem;
    height: 2px;
    background-color: currentColor;
    border-radius: 2px;
    transition: transform var(--duration-base) var(--ease-out), background-color var(--duration-fast) ease;
}

.nav-toggle__icon {
    position: relative;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
    content: "";
    position: absolute;
    left: 0;
}

.nav-toggle__icon::before {
    transform: translateY(-6px);
}

.nav-toggle__icon::after {
    transform: translateY(6px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon {
    background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before {
    transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after {
    transform: rotate(-45deg);
}

@media (min-width: 75em) {
    .site-nav {
        position: static;
        flex-direction: row;
        align-items: center;
        padding: 0;
        margin-left: auto;
        overflow: visible;
        background: none;
        border: 0;
        visibility: visible;
        opacity: 1;
        transform: none;
        transition: none;
    }

    .site-nav__list {
        display: flex;
        gap: var(--space-2xs);
    }

    .site-nav__link {
        position: relative;
        min-height: 2.75rem;
        padding: var(--space-xs) var(--space-sm);
        font-family: var(--font-body);
        font-size: 0.9375rem;
        font-weight: var(--weight-medium);
        letter-spacing: 0;
        border: 0;
    }

    .site-nav__link::after {
        content: "";
        position: absolute;
        right: var(--space-sm);
        bottom: 0.35rem;
        left: var(--space-sm);
        height: 2px;
        background-color: var(--color-accent);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform var(--duration-base) var(--ease-out);
    }

    .site-nav__link:hover::after,
    .site-nav__link[aria-current="page"]::after {
        transform: scaleX(1);
    }

    .site-nav__link[aria-current="page"] {
        color: var(--color-heading);
    }

    .site-nav__extra,
    .nav-toggle {
        display: none;
    }
}

/* --------------------------------------------------------------------------
   Inner page hero + breadcrumb
   -------------------------------------------------------------------------- */
.page-hero {
    position: relative;
    padding-block: clamp(3.5rem, 2.4rem + 4.5vw, 6.5rem);
    overflow: hidden;
}

.page-hero::after {
    content: "";
    position: absolute;
    right: -1rem;
    bottom: 0;
    width: min(75vw, 560px);
    aspect-ratio: 560 / 360;
    background: url("../images/hero/page-hero-lines.svg") no-repeat right bottom / contain;
    opacity: 0.18;
    pointer-events: none;
}

.page-hero__inner {
    position: relative;
    z-index: 1;
    max-width: 52rem;
}

.page-hero__title {
    margin-top: var(--space-lg);
}

.page-hero__lead {
    max-width: 42rem;
    margin-top: var(--space-md);
    font-size: var(--text-lg);
    color: var(--color-muted);
}

.page-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-xl);
    margin-top: var(--space-xl);
    font-size: var(--text-sm);
    color: var(--color-muted);
}

.page-hero__meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

@media (min-width: 64em) {
    .page-hero::after {
        right: 2rem;
        opacity: 0.4;
    }
}

.breadcrumb__list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs) var(--space-sm);
    font-size: var(--text-sm);
    color: var(--color-muted);
}

.breadcrumb__item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Separator chevron drawn with borders (not read by screen readers) */
.breadcrumb__item + .breadcrumb__item::before {
    content: "";
    width: 0.4rem;
    height: 0.4rem;
    border-top: 1.5px solid currentColor;
    border-right: 1.5px solid currentColor;
    opacity: 0.7;
    transform: rotate(45deg);
}

.breadcrumb__link {
    display: inline-block;
    padding-block: 0.15rem;
    color: var(--color-text);
    text-decoration: none;
}

.breadcrumb__link:hover {
    color: var(--color-accent-text);
    text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Site footer
   -------------------------------------------------------------------------- */
.site-footer {
    position: relative;
    padding-top: clamp(3.5rem, 2.5rem + 4vw, 6rem);
    overflow: hidden;
}

.site-footer__top {
    display: grid;
    gap: var(--space-2xl);
}

.site-footer__about {
    max-width: 22rem;
    margin-top: var(--space-lg);
    color: var(--color-muted);
}

.site-footer__title {
    margin-bottom: var(--space-lg);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--color-accent-text);
}

.site-footer__links {
    display: grid;
    gap: var(--space-2xs);
}

.site-footer__links a,
.site-footer__contact a {
    display: inline-block;
    padding-block: 0.3rem;
    color: var(--color-text);
    text-decoration: none;
}

.site-footer__links a:hover,
.site-footer__contact a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

.site-footer__contact {
    display: grid;
    gap: var(--space-md);
    color: var(--color-muted);
}

.site-footer__contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.site-footer__contact-item .icon {
    margin-top: 0.3rem;
}

.site-footer__wordmark {
    margin-top: clamp(3rem, 2rem + 4vw, 5rem);
    font-family: var(--font-heading);
    font-size: clamp(3.5rem, 15vw, 13.5rem);
    font-weight: var(--weight-heavy);
    line-height: 0.8;
    letter-spacing: -0.02em;
    text-align: center;
    text-transform: uppercase;
    white-space: nowrap;
    color: transparent;
    -webkit-text-stroke: 1px rgb(255 255 255 / 0.14);
    user-select: none;
}

.site-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm) var(--space-xl);
    padding-block: var(--space-lg);
    margin-top: var(--space-xl);
    font-size: var(--text-sm);
    color: var(--color-muted);
    border-top: 1px solid var(--color-border);
}

.site-footer__legal {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs) var(--space-lg);
}

.site-footer__legal a {
    display: inline-block;
    padding-block: 0.25rem;
    color: var(--color-muted);
}

.site-footer__legal a:hover {
    color: var(--color-accent);
}

@media (min-width: 48em) {
    .site-footer__top {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 64em) {
    .site-footer__top {
        grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr) minmax(0, 1fr) minmax(0, 1.2fr);
        gap: var(--space-xl);
    }
}