/* ============================================================
   POWERHOUSE CONSULTING — Boardroom system
   Every token here is documented in BRAND.md. Change both.
   ============================================================ */
:root {
  /* Color */
  --navy:        #16213E;   /* primary ink, dark fields */
  --navy-deep:   #0E1730;   /* hero field, footer */
  --gold:        #9A7B2E;   /* burnished accent */
  --gold-bright: #C39A3E;   /* links / hover on dark */
  --ivory:       #F7F4EC;   /* page background, warm */
  --paper:       #FFFFFF;   /* cards */
  --ink:         #1A2238;   /* body text on light */
  --muted:       #5B6473;   /* secondary text */
  --line:        #DED7C6;   /* hairline rules on ivory */
  --line-dark:   #2A3556;   /* hairline rules on navy */
  --leak:        #B23A3A;   /* the one warning red: revenue leaving */

  /* Type */
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  /* Scale */
  --step--1: clamp(0.82rem, 0.78rem + 0.2vw, 0.92rem);
  --step-0:  clamp(1rem, 0.96rem + 0.25vw, 1.13rem);
  --step-1:  clamp(1.2rem, 1.1rem + 0.5vw, 1.45rem);
  --step-2:  clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --step-3:  clamp(2rem, 1.6rem + 2vw, 3rem);
  --step-4:  clamp(2.6rem, 1.9rem + 3.4vw, 4.4rem);

  --maxw: 1120px;
  --gutter: clamp(1.2rem, 5vw, 4rem);
  --radius: 3px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--ink);
  background: var(--ivory);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { font-weight: 800; line-height: 1.08; letter-spacing: -0.02em; margin: 0; color: var(--navy); }
h1 { font-size: var(--step-4); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); letter-spacing: -0.01em; }
p { margin: 0 0 1rem; }
a { color: var(--navy); text-decoration: none; }
strong { font-weight: 700; }

.num { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }

.eyebrow {
  font-family: var(--mono); font-size: var(--step--1); font-weight: 500;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold);
  margin: 0 0 0.9rem;
}
.eyebrow.on-dark { color: var(--gold-bright); }

.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.lede { font-size: var(--step-1); color: var(--muted); max-width: 60ch; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-family: var(--sans); font-weight: 600; font-size: var(--step-0);
  padding: 0.85em 1.5em; border-radius: var(--radius);
  border: 1.5px solid transparent; cursor: pointer;
  transition: transform .15s ease, background .15s ease, color .15s ease, border-color .15s ease;
}
.btn:focus-visible { outline: 3px solid var(--gold-bright); outline-offset: 3px; }
.btn--gold { background: var(--gold); color: #fff; }
.btn--gold:hover { background: #876a26; transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn--ghost:hover { background: var(--navy); color: #fff; }
.btn--ghost-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn--ghost-light:hover { background: #fff; color: var(--navy); border-color:#fff; }
.btn .arrow { transition: transform .15s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 30;
  background: rgba(247,244,236,.86); backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 0.9rem; }
.brandmark { display: flex; align-items: baseline; gap: 0.55rem; font-weight: 800; color: var(--navy); letter-spacing: -0.01em; }
.brandmark .pc { font-family: var(--mono); font-weight: 600; color: var(--gold); font-size: 0.78em; letter-spacing: 0.04em; }
.nav__links { display: flex; align-items: center; gap: 1.6rem; }
.nav__links a { font-size: var(--step--1); font-weight: 500; color: var(--muted); }
.nav__links a:hover { color: var(--navy); }
.nav__toggle { display: none; background: none; border: 0; cursor: pointer; padding: .4rem; }
.nav__toggle span { display: block; width: 24px; height: 2px; background: var(--navy); margin: 5px 0; }

/* ---------- hero ---------- */
.hero { background: var(--navy-deep); color: #EDEFF5; position: relative; overflow: hidden; }
.hero .wrap { position: relative; z-index: 2; }
.hero__grid { display: grid; gap: clamp(2rem,5vw,3.5rem); padding-block: clamp(3.5rem,9vw,6rem); }
.hero h1 { color: #fff; max-width: 18ch; }
.hero h1 .mk { color: var(--gold-bright); }
.hero__sub { font-size: var(--step-1); color: #B9C0D4; max-width: 52ch; margin-top: 1.3rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2rem; }

/* the seam signature */
.seam {
  margin-top: clamp(2.5rem,6vw,3.5rem);
  border-top: 1px solid var(--line-dark);
  padding-top: 1.6rem;
}
.seam__rail {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem;
}
.seam__side { font-family: var(--mono); font-size: var(--step--1); letter-spacing: 0.18em; text-transform: uppercase; color: #9AA3BE; }
.seam__side.r { text-align: right; }
.seam__gap { position: relative; display: flex; flex-direction: column; align-items: center; }
.seam__line { width: 2px; height: 56px; background: linear-gradient(var(--gold-bright), rgba(195,154,62,0)); box-shadow: 0 0 14px 2px rgba(195,154,62,.4); }
.seam__tag { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--leak); margin-top: 0.5rem; white-space: nowrap; }
.seam__bar { height: 2px; background: linear-gradient(90deg, #38456b, var(--gold-bright) 50%, #38456b); margin-top: -29px; }

/* proof figure */
.proof { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.7rem 1.4rem; margin-top: 2.2rem; }
.proof__fig { font-family: var(--mono); font-size: clamp(2.4rem,7vw,3.6rem); font-weight: 600; color: var(--gold-bright); line-height: 1; letter-spacing: -0.03em; }
.proof__lbl { color: #B9C0D4; max-width: 34ch; font-size: var(--step--1); }

/* ---------- generic light sections ---------- */
.kicker-row { display: flex; align-items: end; justify-content: space-between; gap: 2rem; flex-wrap: wrap; margin-bottom: 2.4rem; }
.kicker-row h2 { max-width: 18ch; }

/* C3 dimensions */
.dims { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.dim { background: var(--paper); padding: 1.6rem 1.5rem; }
.dim__n { font-family: var(--mono); font-size: var(--step--1); color: var(--gold); font-weight: 600; letter-spacing: 0.04em; }
.dim h3 { margin: 0.5rem 0 0.6rem; font-size: var(--step-0); text-transform: uppercase; letter-spacing: 0.02em; }
.dim p { color: var(--muted); font-size: var(--step--1); margin: 0; }
.glass-note { margin-top: 1.6rem; font-size: var(--step--1); color: var(--muted); border-left: 2px solid var(--gold); padding-left: 1rem; max-width: 60ch; }

/* evidence */
.evidence { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 1.2rem; }
.ev { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; }
.ev__fig { font-family: var(--mono); font-weight: 600; font-size: var(--step-2); color: var(--navy); letter-spacing: -0.02em; }
.ev p { margin: 0.4rem 0 0; color: var(--muted); font-size: var(--step--1); }

/* CTA band */
.band { background: var(--navy); color: #fff; border-top: 3px solid var(--gold); }
.band .wrap { padding-block: clamp(3rem,7vw,4.5rem); }
.band h2 { color: #fff; max-width: 20ch; }
.band p { color: #C3C9DB; max-width: 56ch; }
.band .hero__cta { margin-top: 1.8rem; }

/* ---------- forms (Kit-ready) ---------- */
.capture { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.5rem,4vw,2.4rem); box-shadow: 0 18px 40px -28px rgba(22,33,62,.4); }
.field { display: block; margin-bottom: 1rem; }
.field label { display: block; font-size: var(--step--1); font-weight: 600; color: var(--navy); margin-bottom: 0.35rem; }
.field input {
  width: 100%; font-family: var(--sans); font-size: var(--step-0); color: var(--ink);
  padding: 0.8em 0.9em; border: 1.5px solid var(--line); border-radius: var(--radius); background: #fff;
}
.field input:focus-visible { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(154,123,46,.18); }
.form-note { font-size: 0.78rem; color: var(--muted); margin-top: 0.8rem; }
.checklist { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.checklist li { position: relative; padding-left: 1.8rem; margin-bottom: 0.7rem; color: var(--ink); }
.checklist li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 0.7rem; height: 0.7rem; border: 2px solid var(--gold); }

/* booking */
.booking { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
.embed-slot { border: 1px dashed var(--line); border-radius: var(--radius); background: var(--paper); padding: 2.5rem; text-align: center; color: var(--muted); }
.embed-slot code { font-family: var(--mono); color: var(--navy); }

/* split layout */
.split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem,5vw,3.5rem); align-items: start; }

/* ---------- footer ---------- */
.foot { background: var(--navy-deep); color: #9AA3BE; border-top: 1px solid var(--line-dark); }
.foot .wrap { padding-block: 2.6rem; display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; align-items: center; }
.foot a { color: #C3C9DB; }
.foot a:hover { color: var(--gold-bright); }
.foot__contact { font-size: var(--step--1); }
.foot__legal { font-size: 0.72rem; color: #6B7493; max-width: 50ch; }

/* ---------- reveal animation (progressive enhancement) ---------- */
/* Content is visible by default. Only hidden when JS is present to reveal it. */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  .nav__links { display: none; }
  .nav__links.open { display: flex; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: flex-start; gap: 0.2rem; background: var(--ivory); border-bottom: 1px solid var(--line); padding: 0.8rem var(--gutter) 1.2rem; }
  .nav__links.open a { padding: 0.5rem 0; font-size: var(--step-0); }
  .nav__toggle { display: block; }
  .split { grid-template-columns: 1fr; }
  .seam__side, .seam__side.r { font-size: 0.7rem; }
}


/* Logo mark in nav */
.nav .brandmark { align-items: center; }
.brandmark img { height: clamp(40px, 5vw, 52px); width: auto; display: block; }


/* About section */
.about { display: grid; grid-template-columns: minmax(0, 280px) 1fr; gap: clamp(1.6rem, 4vw, 3.2rem); align-items: center; }
.about__portrait img { width: 100%; height: auto; display: block; border-radius: var(--radius); border: 1px solid var(--line); }
.about__body h2 { margin-bottom: 1rem; }
.about__body .lede { margin-bottom: 1.1rem; }
@media (max-width: 760px) { .about { grid-template-columns: 1fr; } .about__portrait { max-width: 240px; } }