/* ============================================================
   PALADIO — section & component styles
   ============================================================ */

/* ---------- NAV ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .4s, border-color .4s, backdrop-filter .4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(244, 243, 239, 0.72);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom-color: var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 600; letter-spacing: -0.02em; font-size: 19px; }
.brand .mark { width: 26px; height: 26px; flex: none; }
.brand-wm { height: 21px; width: auto; display: block; color: var(--ink); flex: none; }
.foot-brand .brand-wm { height: 23px; color: #fff; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a { font-size: 15px; color: var(--ink-700); transition: color .2s; letter-spacing: -0.01em; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-cta .btn { padding: 9px 17px; font-size: 14px; }
@media (max-width: 920px) { .nav-links { display: none; } }

/* ---------- HERO ---------- */
.hero { padding-top: 150px; padding-bottom: clamp(60px, 9vh, 120px); position: relative; overflow: hidden; }
.hero-grid-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 78%);
          mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 78%);
}
.hero-inner { position: relative; z-index: 2; }
.hero h1 { max-width: 16ch; margin-top: 26px; font-size: calc(clamp(2.9rem, 8vw, 7.5rem) * var(--hero-scale, 1)); }
/* tweak hooks */
body.compact { --section-y: clamp(56px, 8vh, 110px); }
body.spacious { --section-y: clamp(104px, 15vh, 210px); }
body.no-grid .hero-grid-bg, body.no-grid .final-grid-bg { display: none; }
.hero .lead { margin-top: 26px; max-width: 46ch; }
.hero .cta-row { margin-top: 34px; }
.hero-foot {
  margin-top: 30px; display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12.5px; color: var(--ink-500); letter-spacing: 0.02em;
}
.hero-foot b { color: var(--ink); font-weight: 500; }

/* Hero flow diagram */
.flow {
  position: relative; z-index: 2;
  margin-top: clamp(48px, 7vh, 90px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, var(--surface), rgba(255,255,255,.5));
  box-shadow: 0 1px 0 rgba(255,255,255,.8) inset, 0 30px 80px -50px rgba(12,13,14,.4);
  overflow: hidden;
}
.flow-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 22px; border-bottom: 1px solid var(--line-soft);
  font-family: var(--mono); font-size: 12px; color: var(--ink-500); letter-spacing: .04em;
}
.flow-dots { display: flex; gap: 6px; }
.flow-dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); display:block; }
.flow-stage { position: relative; padding: clamp(24px, 4vw, 48px); }
.flow-stage svg { width: 100%; height: auto; display: block; overflow: visible; }

.layer-legend { display: flex; gap: 0; margin-top: 0; border-top: 1px solid var(--line-soft); }
.layer-legend .lg {
  flex: 1; padding: 18px 22px; border-right: 1px solid var(--line-soft);
  display: flex; flex-direction: column; gap: 4px;
}
.layer-legend .lg:last-child { border-right: none; }
.layer-legend .lg .lt { font-family: var(--mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; display:flex; align-items:center; gap:8px; }
.layer-legend .lg .lt i { width: 8px; height: 8px; border-radius: 2px; display:block; }
.layer-legend .lg .ld { font-size: 14.5px; color: var(--ink-500); letter-spacing: -0.01em; }
.layer-legend .lg .lv { font-weight: 600; font-size: 18px; letter-spacing: -0.02em; }
@media (max-width: 720px) {
  .layer-legend { flex-wrap: wrap; }
  .layer-legend .lg { flex: 1 1 50%; border-bottom: 1px solid var(--line-soft); }
  .layer-legend .lg:nth-child(2) { border-right: none; }
}

/* logos / client wall */
.trust-strip { margin-top: clamp(48px,7vh,80px); }
.trust-strip .tlabel { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-400); text-align:center; }
.client-wall {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
@media (max-width: 940px) { .client-wall { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .client-wall { grid-template-columns: repeat(2, 1fr); } }
.client-card {
  display: flex; align-items: center; justify-content: center;
  height: 92px; padding: 18px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: border-color .3s, transform .3s, box-shadow .3s;
}
.client-card:hover { border-color: var(--line-strong); transform: translateY(-3px); box-shadow: 0 18px 40px -30px rgba(23,20,14,.5); }
.client-card img {
  max-height: 40px; max-width: 100%; width: auto; object-fit: contain;
  filter: grayscale(1); opacity: .72;
  transition: filter .3s, opacity .3s;
}
.client-card:hover img { filter: grayscale(0); opacity: 1; }
.client-card .wm-text {
  font-weight: 700; font-size: clamp(15px, 1.5vw, 18px); letter-spacing: -0.02em;
  color: var(--ink-700); text-align: center; line-height: 1.05;
  filter: grayscale(1); opacity: .8; transition: opacity .3s, color .3s;
}
.client-card:hover .wm-text { opacity: 1; color: var(--ink); }
.client-foot { margin-top: 20px; text-align:center; font-family: var(--mono); font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-400); }
.nav-login { white-space: nowrap; }
.nav-cta { flex: none; }

/* ---------- Section header kit ---------- */
.sec-head { max-width: 60ch; }
.sec-head .eyebrow { margin-bottom: 22px; }
.sec-head h2 { margin-bottom: 22px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 80px); align-items: center; }
.two-col.flip > .col-viz { order: -1; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; gap: 40px; } .two-col.flip > .col-viz { order: 0; } }

.cap-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.cap-list .chip { background: transparent; }
.dark .cap-list .chip { background: rgba(255,255,255,.03); }

.viz-card {
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: 0 30px 80px -56px rgba(12,13,14,.45);
  overflow: hidden;
}
.dark .viz-card { background: var(--dark-2); border-color: var(--dark-line); box-shadow: none; }
.viz-card .vc-head {
  display:flex; align-items:center; justify-content:space-between; gap:14px;
  padding: 14px 20px; border-bottom: 1px solid var(--line-soft);
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .05em; color: var(--ink-500); text-transform: uppercase;
}
.viz-card .vc-head span { white-space:nowrap; }
.dark .viz-card .vc-head { border-color: var(--dark-line-soft); color: var(--dark-ink-500); }
.viz-card .vc-body { padding: clamp(18px, 3vw, 30px); }
.viz-card svg { width: 100%; height: auto; overflow: visible; }

/* ---------- Section 2 — fragmented ---------- */
.frag { background: var(--paper-2); }
.frag-stage { position: relative; margin-top: 56px; border:1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); overflow:hidden; }
.frag-stage svg { width:100%; height:auto; display:block; }
.frag-msgs { display:grid; grid-template-columns: repeat(4,1fr); gap:0; border-top:1px solid var(--line); }
.frag-msgs .fm { padding: 26px clamp(18px,2.4vw,30px); border-right:1px solid var(--line-soft); }
.frag-msgs .fm:last-child { border-right:none; }
.frag-msgs .fm .n { font-family:var(--mono); font-size:12px; color:var(--ink-400); }
.frag-msgs .fm .t { font-size: clamp(17px,1.5vw,20px); font-weight:600; letter-spacing:-0.02em; margin-top:8px; }
@media (max-width:760px){ .frag-msgs{grid-template-columns:repeat(2,1fr)} .frag-msgs .fm:nth-child(2){border-right:none} .frag-msgs .fm{border-bottom:1px solid var(--line-soft)} }

/* ---------- Introducing (dark centerpiece) ---------- */
.intro-dark { text-align:center; }
.intro-dark .display { margin: 26px auto 0; max-width: 18ch; }
.intro-dark .lead { margin: 26px auto 0; max-width: 50ch; }
.layer-cards { display:grid; grid-template-columns: repeat(4,1fr); gap:16px; margin-top: clamp(48px,7vh,84px); text-align:left; }
@media (max-width:900px){ .layer-cards{grid-template-columns:repeat(2,1fr)} }
@media (max-width:520px){ .layer-cards{grid-template-columns:1fr} }
.lcard {
  border:1px solid var(--dark-line); border-radius: var(--radius); padding: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.01));
  position:relative; overflow:hidden; min-height: 230px; display:flex; flex-direction:column;
  transition: border-color .3s, transform .3s;
}
.lcard:hover { border-color: rgba(255,255,255,.28); transform: translateY(-3px); }
.lcard .lnum { font-family:var(--mono); font-size:12px; color:var(--dark-ink-500); }
.lcard .lname { font-family:var(--mono); font-size:13px; letter-spacing:.12em; margin-top:auto; display:flex; align-items:center; gap:9px; }
.lcard .lname i { width:8px;height:8px;border-radius:2px; }
.lcard .lverb { font-size: clamp(1.5rem,2vw,2rem); font-weight:600; letter-spacing:-0.03em; margin-top:8px; }
.lcard .ldesc { font-size:14.5px; color:var(--dark-ink-300); margin-top:10px; line-height:1.4; }
.lcard .lglow { position:absolute; top:-40px; right:-40px; width:140px; height:140px; border-radius:50%; filter:blur(46px); opacity:.4; }

/* ---------- Layer sections ---------- */
.layer-sec { position:relative; border-top:1px solid var(--line); }
.layer-mark { display:flex; align-items:center; gap:12px; font-family:var(--mono); font-size:13px; letter-spacing:.14em; text-transform:uppercase; }
.layer-mark .sq { width:11px;height:11px;border-radius:3px; }
.layer-mark .ix { color:var(--ink-400); }
.layer-sec h2 { margin: 20px 0 0; }
.layer-sec .verb { font-size: clamp(3rem,6vw,5.2rem); letter-spacing:-0.045em; line-height:0.95; }
.layer-sec .lead { margin-top: 22px; }
.outcome-tag {
  margin-top: 28px; display:inline-flex; align-items:center; gap:12px; padding:12px 18px;
  border:1px solid var(--line); border-radius:12px; background:var(--surface); font-size:15px;
}
.outcome-tag b { font-weight:600; }
.outcome-tag .oa { font-family:var(--mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-400); }