/* =====================================================================
   CSD Engineers — Projects (archive + single)
   Brand: navy #0B2A4A + gold #E0A012. Section wrappers are transparent so
   the site-wide blueprint background (body) shows through the white areas,
   matching the other pages. Only cards/hero/CTA carry solid backgrounds.
   ===================================================================== */
:root{
  --ps-navy:#0B2A4A; --ps-navy-900:#071D34; --ps-gold:#E0A012; --ps-gold-d:#C1860C;
  --ps-ink:#0F1B2D; --ps-body:#33424F; --ps-muted:#5A6B7E; --ps-line:#E3E8EF;
  --ps-cloud:#F4F6F9; --ps-container:1200px; --ps-container-lg:1360px;
}
.ps-archive, .ps-single{ color:var(--ps-body); }
.ps-wrap{ max-width:var(--ps-container); margin:0 auto; padding:0 24px; }
.ps-archive *,.ps-single *{ box-sizing:border-box; }
.ps-archive a,.ps-single a{ text-decoration:none; }

/* Section wrappers transparent → blueprint shows through */
.ps-section{ padding:70px 0; }
.ps-sec-head{ text-align:center; max-width:640px; margin:0 auto 40px; }
.ps-eyebrow{ display:inline-block; font-weight:800; letter-spacing:.16em; text-transform:uppercase;
  font-size:.72rem; color:var(--ps-gold-d); background:rgba(224,160,18,.10);
  border:1px solid rgba(224,160,18,.32); padding:7px 15px; border-radius:999px; margin-bottom:14px; }
.ps-sec-head h2{ font-size:clamp(1.7rem,1.2rem + 1.8vw,2.4rem); font-weight:900; color:var(--ps-ink); margin:0 0 10px; letter-spacing:-.01em; }
.ps-sec-head p{ color:var(--ps-muted); margin:0; }

/* Buttons */
.ps-btn{ display:inline-flex; align-items:center; gap:8px; height:50px; padding:0 26px; border-radius:12px;
  font-weight:800; font-size:1rem; border:1.5px solid transparent; cursor:pointer; transition:.2s; }
.ps-btn-gold{ background:var(--ps-gold); color:var(--ps-navy); }
.ps-btn-gold:hover{ background:var(--ps-gold-d); color:var(--ps-navy); }
.ps-btn-navy{ background:var(--ps-navy); color:#fff; }
.ps-btn-navy:hover{ background:var(--ps-navy-900); color:#fff; }
.ps-btn-ghost{ background:transparent; color:#fff; border-color:rgba(255,255,255,.6); }
.ps-btn-ghost:hover{ background:rgba(255,255,255,.12); color:#fff; }

/* ===================== HERO ===================== */
.ps-hero{ position:relative; color:#fff; min-height:500px; display:flex; align-items:center; overflow:hidden;
  background:linear-gradient(90deg,rgba(5,15,30,.94) 0%,rgba(7,20,40,.86) 45%,rgba(7,20,40,.55) 100%), var(--ps-hero-img,linear-gradient(120deg,#0B2A4A,#071D34));
  background-size:cover; background-position:center; }
.ps-hero::after{ content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(820px 460px at 85% 0%,rgba(224,160,18,.20),transparent 60%); }
.ps-hero .ps-wrap{ position:relative; z-index:2; padding-top:66px; padding-bottom:56px; }
.ps-crumb{ font-size:.85rem; color:rgba(234,241,249,.8); margin-bottom:20px; }
.ps-crumb a{ color:rgba(234,241,249,.8); }
.ps-crumb a:hover{ color:var(--ps-gold); }
.ps-hero .ps-eyebrow{ color:var(--ps-gold); background:rgba(224,160,18,.14); border-color:rgba(224,160,18,.45); }
.ps-hero h1{ color:#fff; font-size:clamp(2.2rem,1.4rem + 3vw,3.5rem); font-weight:900; line-height:1.12; max-width:17ch; margin:0 0 16px; letter-spacing:-.015em; }
.ps-hero h1 .hl{ color:var(--ps-gold); }
.ps-hero p.lead{ font-size:1.15rem; color:rgba(234,241,249,.92); max-width:60ch; margin:0 0 28px; }
.ps-hero-cta{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:42px; }
.ps-stats{ display:flex; flex-wrap:wrap; gap:40px; }
.ps-stat .n{ font-size:2.3rem; font-weight:900; color:#fff; line-height:1; }
.ps-stat .n span{ color:var(--ps-gold); }
.ps-stat .l{ font-size:.88rem; color:rgba(234,241,249,.75); margin-top:6px; }

/* ===================== FEATURED SPOTLIGHT ===================== */
.ps-spot{ display:grid; grid-template-columns:1.25fr 1fr; background:#fff; border-radius:20px; overflow:hidden;
  box-shadow:0 24px 60px rgba(11,42,74,.12); border:1px solid var(--ps-line); }
.ps-spot .img{ position:relative; min-height:420px; background-size:cover; background-position:center; }
.ps-spot .tag{ position:absolute; top:20px; left:20px; background:var(--ps-gold); color:var(--ps-navy);
  font-weight:800; font-size:.7rem; letter-spacing:.1em; text-transform:uppercase; padding:7px 14px; border-radius:999px; }
.ps-spot .body{ padding:44px; }
.ps-spot .cat{ color:var(--ps-gold-d); font-weight:800; font-size:.78rem; letter-spacing:.1em; text-transform:uppercase; }
.ps-spot h3{ font-size:1.8rem; font-weight:900; color:var(--ps-ink); margin:10px 0 14px; }
.ps-spot p{ color:var(--ps-body); margin:0 0 22px; }
.ps-spot .facts{ display:grid; grid-template-columns:1fr 1fr; gap:16px 24px; margin-bottom:26px; }
.ps-spot .facts div{ border-left:3px solid var(--ps-gold); padding-left:12px; }
.ps-spot .facts .k{ font-size:.72rem; text-transform:uppercase; letter-spacing:.08em; color:var(--ps-muted); }
.ps-spot .facts .v{ font-weight:800; color:var(--ps-ink); font-size:1.02rem; }

/* ===================== TOOLBAR / FILTER CHIPS ===================== */
.ps-toolbar{ display:flex; align-items:center; justify-content:space-between; gap:18px; flex-wrap:wrap; margin-bottom:34px; }
.ps-chips{ display:flex; gap:10px; flex-wrap:wrap; }
.ps-chip{ padding:10px 20px; border-radius:999px; border:1.5px solid var(--ps-line); background:#fff;
  color:var(--ps-body); font-weight:700; font-size:.92rem; cursor:pointer; transition:.18s; }
.ps-chip:hover{ border-color:var(--ps-gold); color:var(--ps-gold-d); }
.ps-chip.active{ background:var(--ps-navy); color:#fff; border-color:var(--ps-navy); }
.ps-tools{ display:flex; gap:10px; flex-wrap:wrap; }
.ps-tools input, .ps-tools select{ height:44px; border:1.5px solid var(--ps-line); border-radius:10px;
  padding:0 14px; font-size:.92rem; color:var(--ps-body); background:#fff; }
.ps-tools input{ width:210px; max-width:52vw; }
.ps-tools button{ height:44px; }

/* ===================== GRID CARDS ===================== */
.ps-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.ps-card{ background:#fff; border-radius:16px; overflow:hidden; border:1px solid var(--ps-line);
  box-shadow:0 6px 20px rgba(11,42,74,.06); display:flex; flex-direction:column; transition:transform .25s, box-shadow .25s; }
.ps-card:hover{ transform:translateY(-6px); box-shadow:0 20px 44px rgba(11,42,74,.16); }
.ps-card .thumb{ position:relative; display:block; aspect-ratio:4/3; overflow:hidden; }
.ps-card .thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .45s ease; }
.ps-card:hover .thumb img{ transform:scale(1.07); }
.ps-card .thumb::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,transparent 55%,rgba(11,42,74,.55) 100%); }
.ps-card .badge{ position:absolute; top:14px; left:14px; z-index:2; font-weight:800; font-size:.68rem;
  letter-spacing:.08em; text-transform:uppercase; padding:6px 12px; border-radius:999px; color:#fff; background:var(--ps-navy); }
.ps-card .badge.commercial{ background:var(--ps-gold); color:var(--ps-navy); }
.ps-card .badge.industrial{ background:var(--ps-navy); }
.ps-card .badge.residential{ background:#0E8F6E; }
.ps-card .content{ padding:20px; display:flex; flex-direction:column; gap:11px; flex:1; }
.ps-card h3.title{ font-size:1.18rem; font-weight:800; color:var(--ps-ink); margin:0; line-height:1.25; }
.ps-card h3.title a{ color:inherit; }
.ps-card h3.title a:hover{ color:var(--ps-gold-d); }
.ps-card .metarow{ display:flex; flex-wrap:wrap; gap:8px; }
.ps-card .mchip{ font-size:.76rem; color:var(--ps-muted); background:var(--ps-cloud); border:1px solid var(--ps-line);
  padding:4px 10px; border-radius:8px; font-weight:600; }
.ps-card .svc{ display:flex; gap:6px; flex-wrap:wrap; }
.ps-card .svc span{ font-size:.66rem; font-weight:800; letter-spacing:.06em; text-transform:uppercase;
  color:var(--ps-gold-d); border:1px solid rgba(224,160,18,.4); padding:3px 8px; border-radius:6px; }
.ps-card .foot{ margin-top:auto; display:flex; align-items:center; justify-content:space-between;
  border-top:1px solid var(--ps-line); padding-top:13px; }
.ps-card .foot a{ color:var(--ps-navy); font-weight:800; font-size:.9rem; }
.ps-card .foot a:hover{ color:var(--ps-gold-d); }
.ps-card .foot .arr{ color:var(--ps-gold); font-weight:900; }

/* Empty state */
.ps-empty{ text-align:center; padding:70px 20px; border:2px dashed var(--ps-line); border-radius:18px; background:rgba(255,255,255,.6); }
.ps-empty h3{ color:var(--ps-ink); font-size:1.4rem; margin:0 0 8px; }
.ps-empty p{ color:var(--ps-muted); margin:0 0 18px; }

/* Pagination */
.ps-pagination{ display:flex; justify-content:center; gap:8px; margin-top:44px; flex-wrap:wrap; }
.ps-pagination a, .ps-pagination span{ min-width:44px; height:44px; display:inline-flex; align-items:center; justify-content:center;
  padding:0 14px; border-radius:10px; border:1.5px solid var(--ps-line); background:#fff; color:var(--ps-body); font-weight:700; }
.ps-pagination a:hover{ border-color:var(--ps-gold); color:var(--ps-gold-d); }
.ps-pagination .current{ background:var(--ps-navy); color:#fff; border-color:var(--ps-navy); }

/* ===================== CTA BAND ===================== */
.ps-ctaband{ position:relative; overflow:hidden; color:#fff; text-align:center; padding:66px 0;
  background:linear-gradient(120deg,var(--ps-navy) 0%,var(--ps-navy-900) 100%); }
.ps-ctaband::after{ content:""; position:absolute; inset:0; background:radial-gradient(700px 400px at 80% 0%,rgba(224,160,18,.18),transparent 60%); }
.ps-ctaband .ps-wrap{ position:relative; z-index:2; }
.ps-ctaband h2{ color:#fff; font-size:2rem; font-weight:900; margin:0 0 12px; }
.ps-ctaband p{ color:rgba(234,241,249,.85); max-width:52ch; margin:0 auto 24px; }
.ps-ctaband .row{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ===================== SINGLE PROJECT ===================== */
.ps-single{ padding-bottom:0; }
/* Full-bleed slider. Any letterbox area shows the blueprint SVG (like other pages), never flat colour. */
.ps-slider-wrap{ background:#071D34 url("../../assets/images/csd-blueprint-light.svg") repeat; background-size:900px 900px; }
.ps-slider{ position:relative; max-width:none; margin:0; width:100%; }
.ps-slider .swiper-slide{ position:relative; width:100%; }
.ps-slider .swiper-slide img{ width:100%; height:clamp(360px,58vh,640px); object-fit:cover; object-position:center; display:block; }
.ps-slider .slide-caption{ position:absolute; left:0; right:0; bottom:0; padding:40px 6% 34px; color:#fff;
  background:linear-gradient(180deg,transparent,rgba(7,20,40,.85)); }
.ps-slider .slide-caption .proj-name{ font-size:clamp(1.6rem,1rem + 2vw,2.6rem); font-weight:900; margin:0 0 6px; color:#fff; }
.ps-slider .slide-caption .img-cap{ color:var(--ps-gold); font-weight:700; margin:0 0 4px; }
.ps-slider .slide-caption .img-desc{ color:rgba(234,241,249,.85); margin:0; max-width:60ch; }
.ps-slider .badge{ position:absolute; top:20px; left:20px; z-index:3; font-weight:800; font-size:.7rem;
  letter-spacing:.08em; text-transform:uppercase; padding:7px 14px; border-radius:999px; color:#fff; background:var(--ps-navy); }
.ps-slider .badge.commercial{ background:var(--ps-gold); color:var(--ps-navy); }
.ps-slider .badge.residential{ background:#0E8F6E; }
.ps-slider .swiper-button-next, .ps-slider .swiper-button-prev{ color:#fff; }
.ps-slider .swiper-pagination-bullet-active{ background:var(--ps-gold); }

.ps-single .title-meta{ max-width:var(--ps-container-lg); margin:0 auto; padding:44px 40px 6px; }
.ps-single .title-meta h1{ font-size:clamp(1.8rem,1.2rem + 2vw,2.7rem); font-weight:900; color:var(--ps-ink); margin:0 0 12px; letter-spacing:-.01em; }
.ps-single .meta-inline{ display:flex; flex-wrap:wrap; gap:10px; }
.ps-single .meta-inline span{ font-size:.85rem; color:var(--ps-muted); background:var(--ps-cloud); border:1px solid var(--ps-line); padding:6px 12px; border-radius:8px; font-weight:600; }

.ps-single .content-area{ max-width:var(--ps-container-lg); margin:0 auto; padding:34px 40px 60px;
  display:grid; grid-template-columns:1fr 360px; gap:48px; align-items:start; }
.ps-single .entry{ background:#fff; border:1px solid var(--ps-line); border-radius:16px; padding:34px; box-shadow:0 6px 20px rgba(11,42,74,.05); }
.ps-single .entry h2,.ps-single .entry h3{ color:var(--ps-ink); }
.ps-single .entry a{ color:var(--ps-gold-d); font-weight:700; }

/* Case-study blocks (only render when filled) */
.ps-case{ margin-top:22px; display:grid; gap:16px; }
.ps-case .cs{ background:#fff; border:1px solid var(--ps-line); border-left:4px solid var(--ps-gold);
  border-radius:12px; padding:22px 24px; box-shadow:0 6px 20px rgba(11,42,74,.05); }
.ps-case .cs h3{ display:flex; align-items:center; gap:10px; font-size:1.1rem; font-weight:800; color:var(--ps-navy); margin:0 0 8px; }
.ps-case .cs h3 .ic{ width:30px; height:30px; border-radius:8px; background:rgba(224,160,18,.14); color:var(--ps-gold-d);
  display:inline-flex; align-items:center; justify-content:center; font-size:1rem; }
.ps-case .cs p{ margin:0; color:var(--ps-body); }

/* Testimonial */
.ps-quote{ margin-top:22px; background:linear-gradient(120deg,var(--ps-navy),var(--ps-navy-900)); color:#fff;
  border-radius:16px; padding:32px 34px; position:relative; }
.ps-quote:before{ content:"“"; position:absolute; top:2px; left:22px; font-size:5rem; color:rgba(224,160,18,.5); line-height:1; }
.ps-quote p{ font-size:1.15rem; font-style:italic; margin:14px 0 12px; color:#eef4fb; }
.ps-quote .who{ color:var(--ps-gold); font-weight:800; }

/* Key facts */
.ps-single .key-facts{ background:#fff; border:1px solid var(--ps-line); border-radius:16px; padding:26px; box-shadow:0 6px 20px rgba(11,42,74,.05); position:sticky; top:96px; }
.ps-single .key-facts h3{ font-size:1.05rem; font-weight:800; color:var(--ps-ink); margin:0 0 14px;
  padding-bottom:12px; border-bottom:2px solid var(--ps-gold); }
.ps-single .key-facts ul{ list-style:none; margin:0; padding:0; display:grid; gap:12px; }
.ps-single .key-facts li{ font-size:.95rem; color:var(--ps-body); }
.ps-single .key-facts li strong{ display:block; font-size:.72rem; text-transform:uppercase; letter-spacing:.07em; color:var(--ps-muted); margin-bottom:2px; font-weight:800; }
.ps-single .key-facts .kf-cta{ margin-top:18px; }
.ps-single .key-facts .ps-btn{ width:100%; justify-content:center; height:46px; }

/* Related */
.ps-single .related{ max-width:var(--ps-container-lg); margin:0 auto; padding:10px 40px 70px; }
.ps-single .related h3{ font-size:1.5rem; font-weight:900; color:var(--ps-ink); margin:0 0 22px; }

/* ===================== RESPONSIVE ===================== */
@media (max-width:960px){
  .ps-grid{ grid-template-columns:repeat(2,1fr); }
  .ps-spot{ grid-template-columns:1fr; }
  .ps-spot .img{ min-height:280px; }
  .ps-single .content-area{ grid-template-columns:1fr; }
  .ps-single .key-facts{ position:static; }
  .ps-stats{ gap:26px; }
}
@media (max-width:600px){
  .ps-grid{ grid-template-columns:1fr; }
  .ps-toolbar{ flex-direction:column; align-items:stretch; }
  .ps-tools input{ width:100%; max-width:none; flex:1; }
  .ps-stat .n{ font-size:1.9rem; }
  .ps-spot .body{ padding:28px; }
}