/* =====================================================================
   RDC STUDIO AFRICA  -  Public theme
   Editorial / architectural look layered over Bootstrap 5.
   Brand accent: deep architectural red (Red Design Collective).
   ===================================================================== */

:root {
    --ink:        #14110f;   /* warm near-black */
    --ink-soft:   #2b2723;
    --muted:      #8a8378;   /* warm grey */
    --line:       #e6e1d8;   /* hairline */
    --paper:      #ffffff;
    --paper-warm: #f6f3ee;   /* off-white sections */
    --paper-deep: #efeae1;
    --accent:     #a41e22;   /* RDC red */
    --accent-dk:  #831417;
    --accent-rgb: 164,30,34; /* accent as r,g,b for translucent tints */
    --radius:     2px;
    --maxw:       1180px;
    --ease:       cubic-bezier(.22,.61,.36,1);
    --shadow-sm:  0 4px 20px rgba(20,17,15,.06);
    --shadow-md:  0 18px 50px rgba(20,17,15,.12);
    --serif:      "Cormorant Garamond", Georgia, "Times New Roman", serif;
    --sans:       "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--sans);
    color: var(--ink);
    background: var(--paper);
    font-size: 1rem;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.container { max-width: var(--maxw); }

h1,h2,h3,h4 { font-family: var(--serif); font-weight: 600; color: var(--ink); letter-spacing: .2px; }

a { color: var(--accent); text-decoration: none; transition: color .25s var(--ease); }
a:hover { color: var(--accent-dk); }

img { max-width: 100%; }

/* ---------- Shared bits ---------- */
.eyebrow {
    display: inline-block;
    font-family: var(--sans);
    font-size: .72rem;
    letter-spacing: .28em;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 1rem;
    position: relative;
    padding-left: 2.6rem;
}
.eyebrow::before {
    content: "";
    position: absolute; left: 0; top: 50%;
    width: 2rem; height: 1px; background: var(--accent);
}
.eyebrow-light { color: #f1c0c2; }
.eyebrow-light::before { background: #f1c0c2; }

.section { padding: clamp(4rem, 9vw, 7.5rem) 0; }
.section-muted { background: var(--paper-warm); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto clamp(2.5rem,5vw,4rem); }
.section-title { font-size: clamp(1.9rem, 4.2vw, 3rem); line-height: 1.12; margin: 0; }
.section-head .eyebrow { padding-left: 0; }
.section-head .eyebrow::before { display: none; }

.lead-text { font-size: 1.18rem; color: var(--ink-soft); line-height: 1.75; }
.body-text { color: var(--ink-soft); }
.body-text p { margin-bottom: 1.1rem; }

.link-arrow { font-family: var(--sans); font-weight: 600; font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; }
.link-arrow i { transition: transform .25s var(--ease); }
.link-arrow:hover i { transform: translateX(5px); }

/* ---------- Buttons ---------- */
.btn { font-family: var(--sans); font-weight: 600; letter-spacing: .04em; border-radius: var(--radius); padding: .7rem 1.5rem; transition: all .28s var(--ease); }
.btn-lg { padding: .9rem 2rem; }
.btn-accent { background: var(--accent); border: 1px solid var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dk); border-color: var(--accent-dk); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 26px rgba(var(--accent-rgb),.32); }
.btn-outline-dark { border: 1px solid var(--ink); color: var(--ink); background: transparent; }
.btn-outline-dark:hover { background: var(--ink); color: #fff; transform: translateY(-2px); }

/* ---------- Navbar ---------- */
.site-nav { transition: background .35s var(--ease), box-shadow .35s var(--ease), padding .35s var(--ease); padding: 1.1rem 0; z-index: 1040; }
.navbar-brand { display: flex; align-items: center; gap: .6rem; }
.brand-mark {
    font-family: var(--serif); font-weight: 700; font-size: 1.5rem; line-height: 1;
    color: #fff; background: var(--accent);
    width: 2.4rem; height: 2.4rem; display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--radius); letter-spacing: .5px;
}
.brand-word { font-family: var(--sans); font-weight: 600; letter-spacing: .18em; text-transform: uppercase; font-size: .82rem; color: var(--ink); }
.brand-logo { height: 40px; width: auto; max-width: 230px; display: block; object-fit: contain; transition: height .25s var(--ease); }
.site-nav.scrolled .brand-logo, .nav-solid .brand-logo { height: 36px; }
.footer-brand .brand-logo-footer { height: 46px; max-width: 230px; }

.site-nav .nav-link {
    font-family: var(--sans); font-weight: 500; font-size: .82rem; letter-spacing: .12em; text-transform: uppercase;
    color: var(--ink-soft); margin: 0 .15rem; padding: .4rem .75rem; position: relative;
}
.site-nav .nav-link::after {
    content: ""; position: absolute; left: .75rem; right: .75rem; bottom: .15rem; height: 1px;
    background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.site-nav .nav-link:hover, .site-nav .nav-link.active { color: var(--accent); }
.site-nav .nav-link.active::after { transform: scaleX(1); }

/* Transparent over a full hero (home), turns solid on scroll */
.nav-overlay { background: transparent; box-shadow: none; }
.nav-overlay .brand-word { color: #fff; }
.nav-overlay .nav-link { color: rgba(255,255,255,.86); }
.nav-overlay .nav-link:hover, .nav-overlay .nav-link.active { color: #fff; }
.nav-overlay .nav-link.active::after { background: #fff; }
.nav-overlay .navbar-toggler { border-color: rgba(255,255,255,.4); }
.nav-overlay .navbar-toggler-icon { filter: invert(1) brightness(2); }

.site-nav.scrolled, .nav-solid { background: rgba(255,255,255,.97); box-shadow: 0 1px 0 var(--line), 0 10px 30px rgba(20,17,15,.06); backdrop-filter: saturate(140%) blur(6px); padding: .7rem 0; }
.site-nav.scrolled .brand-word, .nav-solid .brand-word { color: var(--ink); }
.site-nav.scrolled .nav-link, .nav-solid .nav-link { color: var(--ink-soft); }
.site-nav.scrolled .nav-link:hover, .site-nav.scrolled .nav-link.active,
.nav-solid .nav-link:hover, .nav-solid .nav-link.active { color: var(--accent); }
.site-nav.scrolled .nav-link.active::after, .nav-solid .nav-link.active::after { background: var(--accent); }
.site-nav.scrolled .navbar-toggler-icon, .nav-solid .navbar-toggler-icon { filter: none; }

/* keep mobile menu legible when expanded over the hero */
@media (max-width: 991.98px) {
    .nav-overlay .navbar-collapse { background: rgba(20,17,15,.96); margin-top: .8rem; padding: 1rem 1.2rem; border-radius: var(--radius); }
    .nav-solid .navbar-collapse, .site-nav.scrolled .navbar-collapse { background: #fff; margin-top: .6rem; padding: .8rem 1rem; border: 1px solid var(--line); border-radius: var(--radius); }
}

/* Inner pages need top space because the navbar is fixed */
body.has-solid-nav { padding-top: 0; }

/* ---------- Hero carousel ---------- */
.hero { position: relative; }
.hero .carousel, .hero .carousel-inner, .hero .carousel-item { height: 100vh; min-height: 600px; }
.hero-slide { position: absolute; inset: 0; background-size: cover; background-position: center; transform: scale(1.06); animation: kenburns 9s ease-out forwards; }
.carousel-item.active .hero-slide { animation: kenburns 9s ease-out forwards; }
@keyframes kenburns { from { transform: scale(1.12); } to { transform: scale(1); } }
.hero-slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(20,17,15,.55) 0%, rgba(20,17,15,.35) 45%, rgba(20,17,15,.72) 100%); }

.hero-caption { position: absolute; inset: 0; display: flex; align-items: center; z-index: 2; }
.hero-caption .container { color: #fff; }
.hero-title { color: #fff; font-size: clamp(2.4rem, 6vw, 5rem); line-height: 1.05; max-width: 16ch; margin: 0 0 1.2rem; text-shadow: 0 2px 30px rgba(0,0,0,.3); }
.hero-sub { font-family: var(--sans); font-size: clamp(1rem, 2vw, 1.25rem); color: rgba(255,255,255,.9); max-width: 60ch; margin-bottom: 1.6rem; font-weight: 300; }

.hero .carousel-indicators { margin-bottom: 2.5rem; z-index: 3; }
.hero .carousel-indicators [data-bs-target] { width: 36px; height: 3px; border: 0; border-radius: 0; background: rgba(255,255,255,.45); opacity: 1; }
.hero .carousel-indicators .active { background: var(--accent); }
.hero .carousel-control-prev, .hero .carousel-control-next { width: 6%; opacity: .55; z-index: 3; }
.hero .carousel-control-prev:hover, .hero .carousel-control-next:hover { opacity: 1; }

.hero-scroll { position: absolute; bottom: 1.4rem; left: 50%; transform: translateX(-50%); color: #fff; font-size: 1.4rem; z-index: 3; animation: bob 2s infinite; opacity: .85; }
.hero-scroll:hover { color: #fff; }
@keyframes bob { 0%,100% { transform: translate(-50%,0); } 50% { transform: translate(-50%,8px); } }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { position: relative; background-size: cover; background-position: center; padding: clamp(8rem,16vw,11rem) 0 clamp(3rem,6vw,4.5rem); color: #fff; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(20,17,15,.62), rgba(20,17,15,.78)); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero-title { color: #fff; font-size: clamp(2.2rem, 5vw, 3.6rem); line-height: 1.08; margin: 0; max-width: 20ch; }
.page-hero-meta { color: rgba(255,255,255,.85); font-family: var(--sans); letter-spacing: .12em; text-transform: uppercase; font-size: .82rem; margin-top: .8rem; }
.page-hero-tall { padding: clamp(9rem,18vw,13rem) 0 clamp(3.5rem,7vw,5rem); }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs { background: var(--paper-warm); border-bottom: 1px solid var(--line); font-family: var(--sans); font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); padding: .85rem 0; }
.breadcrumbs a { color: var(--ink-soft); }
.breadcrumbs span { margin: 0 .5rem; color: var(--line); }

/* ---------- Stats ---------- */
.stats-band { background: var(--ink); color: #fff; }
.stats-band .stat-value { font-family: var(--serif); font-size: clamp(2.6rem,6vw,4.2rem); font-weight: 600; line-height: 1; color: #fff; }
.stats-band .stat-label { font-family: var(--sans); font-size: .78rem; letter-spacing: .16em; text-transform: uppercase; color: rgba(255,255,255,.62); margin-top: .7rem; }

/* ---------- Service cards ---------- */
.service-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 2.2rem 1.9rem; transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease); }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.service-icon { display: inline-flex; align-items: center; justify-content: center; width: 3.2rem; height: 3.2rem; border-radius: var(--radius); background: var(--paper-deep); color: var(--accent); font-size: 1.45rem; margin-bottom: 1.2rem; }
.service-card:hover .service-icon { background: var(--accent); color: #fff; }
.service-title { font-size: 1.4rem; margin-bottom: .6rem; }
.service-text { color: var(--muted); font-size: .96rem; margin: 0; }

.service-row { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 2.2rem; display: flex; gap: 1.4rem; }
.service-row-num { font-family: var(--serif); font-size: 2.4rem; color: var(--line); line-height: 1; font-weight: 600; }
.service-row-img { height: 150px; background-size: cover; background-position: center; border-radius: var(--radius); margin-bottom: 1.2rem; }

/* ---------- Value cards (about) ---------- */
.value-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 2.4rem; }
.value-icon { display: inline-flex; width: 3rem; height: 3rem; align-items: center; justify-content: center; background: var(--accent); color: #fff; border-radius: var(--radius); font-size: 1.3rem; margin-bottom: 1.1rem; }
.value-title { font-size: 1.5rem; margin-bottom: .7rem; }

/* ---------- Project cards ---------- */
.project-card { display: block; background: var(--paper); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); transition: transform .35s var(--ease), box-shadow .35s var(--ease); height: 100%; }
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.project-img { position: relative; height: 270px; background-size: cover; background-position: center; transition: transform .6s var(--ease); }
.project-card:hover .project-img { transform: scale(1.05); }
.project-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(20,17,15,.35)); opacity: 0; transition: opacity .35s var(--ease); }
.project-card:hover .project-img::after { opacity: 1; }
.project-tag { position: absolute; top: 1rem; left: 1rem; background: rgba(255,255,255,.92); color: var(--ink); font-family: var(--sans); font-size: .68rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; padding: .35rem .7rem; border-radius: var(--radius); }
.project-body { padding: 1.4rem 1.5rem 1.6rem; }
.project-name { font-size: 1.35rem; margin-bottom: .25rem; color: var(--ink); }
.project-meta { font-family: var(--sans); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

/* ---------- Filter bar ---------- */
.filter-bar { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem; margin-bottom: 3rem; }
.filter-btn { font-family: var(--sans); font-size: .76rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; background: transparent; border: 1px solid var(--line); color: var(--ink-soft); padding: .55rem 1.2rem; border-radius: 999px; cursor: pointer; transition: all .25s var(--ease); }
.filter-btn:hover { border-color: var(--ink); }
.filter-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.project-item { transition: opacity .3s var(--ease); }

/* ---------- Fact card / gallery (project detail) ---------- */
.fact-card { background: var(--paper-warm); border: 1px solid var(--line); border-radius: var(--radius); padding: 2rem; position: sticky; top: 100px; }
.fact-head { font-size: 1.25rem; margin-bottom: 1.2rem; }
.fact-list dt { font-family: var(--sans); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-top: 1rem; }
.fact-list dd { font-family: var(--serif); font-size: 1.15rem; margin: .1rem 0 0; color: var(--ink); }

.gallery-item { display: block; overflow: hidden; border-radius: var(--radius); }
.gallery-item img { width: 100%; height: 240px; object-fit: cover; transition: transform .5s var(--ease); }
.gallery-item:hover img { transform: scale(1.06); }

/* ---------- Lightbox ---------- */
.lightbox { position: fixed; inset: 0; background: rgba(15,13,11,.94); display: none; align-items: center; justify-content: center; z-index: 2000; padding: 2rem; }
.lightbox.open { display: flex; }
.lightbox img { max-width: 92%; max-height: 82vh; border-radius: var(--radius); box-shadow: 0 30px 80px rgba(0,0,0,.6); }
.lightbox-caption { position: absolute; bottom: 1.4rem; left: 0; right: 0; text-align: center; color: #fff; font-family: var(--sans); font-size: .9rem; }
.lightbox-close { position: absolute; top: 1rem; right: 1.4rem; background: none; border: 0; color: #fff; font-size: 2.4rem; line-height: 1; cursor: pointer; }

/* ---------- Blog cards ---------- */
.post-card { display: block; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .35s var(--ease), box-shadow .35s var(--ease); }
.post-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.post-img { height: 210px; background-size: cover; background-position: center; }
.post-body { padding: 1.5rem 1.6rem 1.7rem; }
.post-date { font-family: var(--sans); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.post-title { font-size: 1.4rem; margin: .5rem 0 .5rem; color: var(--ink); }
.post-excerpt { color: var(--muted); font-size: .95rem; margin-bottom: 1rem; }
.article-body { font-size: 1.1rem; color: var(--ink-soft); }
.article-body p { margin-bottom: 1.2rem; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--accent); color: #fff; padding: clamp(4rem,8vw,6rem) 0; position: relative; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; inset: 0; background:
    repeating-linear-gradient(135deg, rgba(255,255,255,.05) 0 2px, transparent 2px 26px); }
.cta-band .container { position: relative; z-index: 2; }
.cta-title { color: #fff; font-size: clamp(1.9rem,4.5vw,3rem); margin-bottom: .8rem; }
.cta-text { color: rgba(255,255,255,.88); font-family: var(--sans); max-width: 60ch; margin: 0 auto; font-weight: 300; }
.cta-band .btn-accent { background: #fff; color: var(--accent); border-color: #fff; }
.cta-band .btn-accent:hover { background: var(--ink); color: #fff; border-color: var(--ink); box-shadow: none; }

/* ---------- Contact ---------- */
.contact-info-list { list-style: none; padding: 0; margin: 1.8rem 0; }
.contact-info-list li { display: flex; gap: 1rem; padding: .9rem 0; border-bottom: 1px solid var(--line); font-family: var(--sans); }
.contact-info-list i { color: var(--accent); font-size: 1.2rem; margin-top: .2rem; }
.contact-info-list strong { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.contact-locations { margin-top: 1.6rem; font-family: var(--sans); }
.contact-locations strong { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: .4rem; }

.form-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.6rem,4vw,2.6rem); box-shadow: var(--shadow-sm); }
.form-label { font-family: var(--sans); font-size: .76rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); font-weight: 600; margin-bottom: .35rem; }
.form-control { border: 1px solid var(--line); border-radius: var(--radius); padding: .7rem .9rem; font-family: var(--sans); }
.form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 .2rem rgba(var(--accent-rgb),.12); }
.map-link { font-family: var(--sans); font-weight: 600; letter-spacing: .06em; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.72); padding: clamp(3.5rem,7vw,5rem) 0 1.6rem; font-family: var(--sans); }
.footer-brand { display: inline-flex; align-items: center; gap: .6rem; }
.footer-brand .brand-word { color: #fff; }
.footer-blurb { color: rgba(255,255,255,.6); font-size: .95rem; max-width: 42ch; }
.footer-head { font-family: var(--sans); font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: #fff; margin-bottom: 1.1rem; font-weight: 600; }
.footer-links, .footer-contact { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: .55rem; }
.footer-links a { color: rgba(255,255,255,.66); font-size: .92rem; }
.footer-links a:hover { color: #fff; }
.footer-contact li { display: flex; gap: .6rem; margin-bottom: .7rem; font-size: .9rem; color: rgba(255,255,255,.66); }
.footer-contact i { color: var(--accent); margin-top: .15rem; }
.footer-contact a { color: rgba(255,255,255,.66); }
.footer-contact a:hover { color: #fff; }
.footer-locations { font-size: .92rem; color: rgba(255,255,255,.66); }
.footer-countries { font-size: .76rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.45); }
.footer-social { display: flex; gap: .7rem; margin-top: 1.2rem; }
.footer-social a { width: 2.3rem; height: 2.3rem; display: inline-flex; align-items: center; justify-content: center; border: 1px solid rgba(255,255,255,.2); border-radius: var(--radius); color: rgba(255,255,255,.75); }
.footer-social a:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .6rem; margin-top: 3rem; padding-top: 1.4rem; border-top: 1px solid rgba(255,255,255,.12); font-size: .82rem; color: rgba(255,255,255,.5); }
.footer-admin-link { color: rgba(255,255,255,.5); }
.footer-admin-link:hover { color: #fff; }

/* ---------- Back to top ---------- */
.back-to-top { position: fixed; right: 1.4rem; bottom: 1.4rem; width: 2.8rem; height: 2.8rem; background: var(--accent); color: #fff; border-radius: var(--radius); display: inline-flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transform: translateY(12px); transition: all .3s var(--ease); z-index: 1030; }
.back-to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top:hover { background: var(--accent-dk); color: #fff; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    *, .hero-slide, .reveal { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
    html { scroll-behavior: auto; }
}