/* SixFiftyThree Consulting — site styles (v3: continuous dark canvas) */

:root {
  /* brand */
  --charcoal: #36454F;
  --slate:    #708090;
  --cobalt:   #66CCF5;
  --cobalt-d: #2E9FD4;
  --snow:     #F7F7F5;

  /* canvas, derived from charcoal at lower luminance */
  --deep:  #141A1F;
  --deep2: #1C2329;
  --deep3: #252D34;

  /* text on dark */
  --mist:      #B9C4CB;
  --mist-dim:  #7E8A93;
  --ink:       #1E2338;

  --hair:    rgba(247,247,245,.10);
  --hair-up: rgba(247,247,245,.18);

  --maxw: 1180px;
  --gut: clamp(20px, 5vw, 60px);
  --section-y: clamp(72px, 10vw, 130px);

  --serif: "DM Serif Display", Georgia, serif;
  --sans: "DM Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono: "DM Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --dotgrid: radial-gradient(circle at 1px 1px, rgba(247,247,245,.09) 1px, transparent 0);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--mist);
  background: var(--deep);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }

.section { padding-block: var(--section-y); background: var(--deep); position: relative; }
.section--paper { background: var(--deep); }
.section--ink {
  background: linear-gradient(170deg, var(--deep) 0%, var(--deep2) 55%, var(--deep3) 100%);
  position: relative; overflow: hidden;
}
.section--ink::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: var(--dotgrid); background-size: 26px 26px; opacity: .6;
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 18%, #000 82%, transparent);
          mask-image: linear-gradient(180deg, transparent, #000 18%, #000 82%, transparent);
}
.section--ink::after {
  content: ""; position: absolute; left: 50%; top: 0; width: 60%; height: 100%; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(102,204,245,.07), transparent 70%);
  pointer-events: none;
}
.section--ink > .wrap { position: relative; z-index: 1; }

/* divider — a waypoint on the line, echoes the logo mark */
.divider { height: 1px; position: relative; background: linear-gradient(90deg, transparent, var(--hair-up) 35%, var(--hair-up) 65%, transparent); }
.divider::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 6px; height: 6px; border-radius: 50%;
  background: var(--cobalt); transform: translate(-50%, -50%); box-shadow: 0 0 0 4px rgba(102,204,245,.14);
}

/* ---------- typography ---------- */
h1, h2, h3 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.012em; line-height: 1.06; margin: 0; color: var(--snow); }
h1 { font-size: clamp(2.7rem, 6.4vw, 4.7rem); }
h2 { font-size: clamp(2rem, 4.2vw, 3.2rem); }
h3 { font-size: clamp(1.22rem, 2vw, 1.55rem); color: var(--snow); }
p { margin: 0 0 1rem; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist-dim);
  margin: 0 0 1.3rem;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--cobalt); box-shadow: 0 0 0 4px rgba(102,204,245,.14); flex: none; }

.lede { font-size: clamp(1.08rem, 1.5vw, 1.32rem); line-height: 1.6; color: var(--mist); max-width: 60ch; }
.measure { max-width: 64ch; }
strong { color: var(--snow); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--sans); font-weight: 600; font-size: 0.98rem; letter-spacing: 0.01em;
  padding: 0.95rem 1.65rem; border-radius: 2px; text-decoration: none;
  border: 1.5px solid transparent; cursor: pointer;
  transition: transform .18s ease, background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.btn svg { width: 16px; height: 16px; transition: transform .2s ease; }
.btn:hover svg { transform: translateX(3px); }
.btn-primary, .btn-cobalt { background: var(--cobalt); color: var(--ink); }
.btn-primary:hover, .btn-cobalt:hover { background: #84d8f8; transform: translateY(-2px); box-shadow: 0 18px 36px -16px rgba(102,204,245,.45); }
.btn-ghost { background: transparent; color: var(--snow); border-color: var(--hair-up); }
.btn-ghost:hover { border-color: var(--cobalt); transform: translateY(-2px); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(20,26,31,.78);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--hair);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 0.62rem; text-decoration: none; color: var(--snow); }
.brand-mark { width: 32px; height: 32px; flex: none; }
.brand-name { font-family: var(--serif); font-size: 1.36rem; letter-spacing: -0.01em; }

.nav { display: flex; align-items: center; gap: clamp(0.6rem, 2vw, 2rem); }
.nav a:not(.btn) { text-decoration: none; font-weight: 500; font-size: 0.96rem; color: var(--mist); padding: 0.4rem 0; position: relative; }
.nav a:not(.btn)::after { content: ""; position: absolute; left: 0; bottom: -1px; width: 0; height: 2px; background: var(--cobalt); transition: width .22s ease; }
.nav a:not(.btn):hover { color: var(--snow); }
.nav a:not(.btn):hover::after, .nav a[aria-current="page"]::after { width: 100%; }
.nav a[aria-current="page"] { color: var(--snow); }
.nav-book { padding: 0.62rem 1.2rem; }
.nav-toggle, .nav-burger { display: none; }

/* ---------- HERO ---------- */
.hero { background: linear-gradient(160deg, var(--deep) 0%, var(--deep2) 60%, var(--deep3) 100%); position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: var(--dotgrid); background-size: 28px 28px; opacity: .7;
  -webkit-mask-image: radial-gradient(120% 90% at 70% 30%, #000 35%, transparent 75%);
          mask-image: radial-gradient(120% 90% at 70% 30%, #000 35%, transparent 75%);
}
.hero::after {
  content: ""; position: absolute; right: -8%; top: -10%; width: 56%; height: 120%;
  background: radial-gradient(closest-side, rgba(102,204,245,.16), transparent 70%);
  pointer-events: none;
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(32px, 5vw, 76px); align-items: center; padding-block: clamp(64px, 9vw, 120px); }
.status-pill {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: #bfe6f8; border: 1px solid rgba(102,204,245,.32); border-radius: 100px;
  padding: 0.4rem 0.85rem; margin-bottom: 1.6rem;
}
.status-pill .live { width: 8px; height: 8px; border-radius: 50%; background: var(--cobalt); position: relative; }
.status-pill .live::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid var(--cobalt); animation: pulse 2.2s ease-out infinite; }
@keyframes pulse { 0% { transform: scale(.6); opacity: .9; } 100% { transform: scale(1.9); opacity: 0; } }
.hero h1 { margin-bottom: 1.5rem; }
.hero h1 .accent { color: var(--cobalt); }
.hero .lede { max-width: 46ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-top: 2.2rem; }
.hero-graphic { width: 100%; height: auto; filter: drop-shadow(0 10px 30px rgba(0,0,0,.35)); }

.fog .dot { animation: settle 1.1s cubic-bezier(.22,.61,.36,1) both; }
.fog .trend { stroke-dasharray: 500; stroke-dashoffset: 500; animation: draw 1.2s ease .35s forwards; }
.fog .arrow { opacity: 0; animation: fadein .45s ease 1.25s forwards; }
.fog .glow { opacity: 0; animation: fadein .6s ease 1.2s forwards; }
@keyframes settle { from { transform: translate(var(--dx,0), var(--dy,0)); opacity: 0; } to { transform: translate(0,0); opacity: 1; } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fadein { to { opacity: 1; } }

/* ---------- block heads ---------- */
.block-head { max-width: 62ch; margin-bottom: clamp(40px, 5vw, 62px); }
.block-head .lede { margin-top: 1.1rem; }

/* ---------- hairline grids (problems, fact, trust) ---------- */
.problem-grid, .fact-grid, .trust-grid-lines {
  display: grid; gap: 1px; background: var(--hair-up); border: 1px solid var(--hair-up); border-radius: 8px; overflow: hidden;
}
.problem-grid { grid-template-columns: repeat(2, 1fr); }
.fact-grid { grid-template-columns: repeat(2, 1fr); margin-top: 2.4rem; }

.problem { background: var(--deep); padding: clamp(26px, 3vw, 42px); position: relative; transition: background .2s ease; }
.problem::before { content: ""; position: absolute; left: 0; top: 0; width: 0; height: 2px; background: var(--cobalt); transition: width .3s ease; }
.problem:hover { background: var(--deep2); }
.problem:hover::before { width: 100%; }
.problem .pn { font-family: var(--mono); font-size: 0.74rem; color: var(--mist-dim); letter-spacing: 0.12em; margin-bottom: 0.9rem; }
.problem h3 { margin-bottom: 0.6rem; }
.problem p { color: var(--mist); margin: 0; }

.fact { background: var(--deep); padding: 1.5rem; }
.fact .num { font-family: var(--serif); font-size: 1.9rem; color: var(--snow); line-height: 1; margin-bottom: 0.4rem; }
.fact .lbl { color: var(--mist-dim); font-size: 0.9rem; }

/* ---------- services preview ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }
.svc-card {
  background: var(--deep2); border: 1px solid var(--hair); border-radius: 10px;
  padding: clamp(24px, 2.5vw, 32px); text-decoration: none; color: inherit;
  display: flex; flex-direction: column; position: relative; overflow: hidden;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.svc-card::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: linear-gradient(90deg, var(--cobalt), var(--cobalt-d)); transform: scaleX(0); transform-origin: left; transition: transform .25s ease; }
.svc-card:hover { transform: translateY(-5px); border-color: rgba(102,204,245,.4); background: var(--deep3); box-shadow: 0 26px 50px -28px rgba(0,0,0,.6); }
.svc-card:hover::after { transform: scaleX(1); }
.svc-num { font-family: var(--mono); font-size: 0.8rem; color: var(--mist-dim); letter-spacing: 0.12em; margin-bottom: 1.1rem; }
.svc-card h3 { margin-bottom: 0.55rem; }
.svc-card p { color: var(--mist); margin: 0 0 1.1rem; font-size: 0.98rem; flex: 1; }
.svc-card .more { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.06em; color: var(--mist-dim); display: inline-flex; align-items: center; gap: 0.4rem; }
.svc-card:hover .more { color: var(--cobalt); }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(22px, 3vw, 44px); }
.step { position: relative; padding-top: 1.6rem; border-top: 2px solid rgba(102,204,245,.28); }
.step .step-n { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.16em; color: var(--cobalt); margin-bottom: 0.8rem; text-transform: uppercase; }
.step h3 { margin-bottom: 0.55rem; }
.step p { color: var(--mist); margin: 0; }

/* ---------- trust ---------- */
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(22px, 3vw, 48px); }
.trust-item { border-left: 2px solid rgba(102,204,245,.32); padding-left: 1.2rem; }
.trust-item .num { font-family: var(--serif); font-size: clamp(2.3rem, 4.4vw, 3.4rem); color: var(--snow); line-height: 1; margin-bottom: 0.5rem; }
.trust-item .lbl { color: var(--mist-dim); font-size: 0.95rem; }

/* ---------- cta band ---------- */
.cta-band { text-align: center; }
.cta-band h2 { margin-bottom: 1rem; max-width: 22ch; margin-inline: auto; }
.cta-band .lede { margin-inline: auto; margin-bottom: 2rem; }
.cta-actions { display: flex; gap: 0.85rem; justify-content: center; flex-wrap: wrap; }

/* ---------- about teaser ---------- */
.about-teaser { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(32px, 5vw, 70px); align-items: center; }
.about-teaser .signoff { font-family: var(--serif); font-size: clamp(1.3rem,2vw,1.6rem); color: var(--snow); margin: 1.3rem 0 0; line-height: 1.3; }

/* ---------- services detail ---------- */
.svc-detail { border-top: 1px solid var(--hair); padding-block: clamp(44px, 5vw, 70px); }
.svc-detail:first-of-type { border-top: none; padding-top: clamp(8px,2vw,20px); }
.svc-detail-grid { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: clamp(28px, 4vw, 60px); }
.svc-detail h2 { margin-bottom: 0.9rem; }
.svc-detail .tagline { color: var(--mist-dim); font-style: italic; }
.svc-list { list-style: none; padding: 0; margin: 0 0 1.8rem; display: grid; gap: 1.05rem; }
.svc-list li { padding-left: 1.5rem; position: relative; color: var(--mist); }
.svc-list li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 7px; height: 7px; background: var(--cobalt); border-radius: 50%; box-shadow: 0 0 0 4px rgba(102,204,245,.12); }
.svc-meta { display: grid; gap: 1.1rem; border-top: 1px solid var(--hair); padding-top: 1.4rem; }
.svc-meta .row .k { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--mist-dim); display: block; margin-bottom: 0.3rem; }
.svc-meta .row .v { color: var(--mist); }

/* ---------- page intro ---------- */
.page-intro { position: relative; overflow: hidden; }
.page-intro::before { content: ""; position: absolute; inset: 0; background: var(--dotgrid); background-size: 26px 26px; opacity: .7; -webkit-mask-image: radial-gradient(90% 120% at 90% 10%, #000, transparent 70%); mask-image: radial-gradient(90% 120% at 90% 10%, #000, transparent 70%); }
.page-intro > .wrap { position: relative; z-index: 1; }

/* ---------- about page ---------- */
.about-hero-grid { display: grid; grid-template-columns: 1fr 0.72fr; gap: clamp(32px, 5vw, 66px); align-items: start; }
.about-photo { width: 100%; border-radius: 10px; border: 1px solid var(--hair-up); aspect-ratio: 4/5; object-fit: cover; display: block; }
.cred-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.1rem; }
.cred-list li { padding-left: 1.5rem; position: relative; color: var(--mist); }
.cred-list li::before { content: ""; position: absolute; left: 0; top: 0.58em; width: 7px; height: 7px; background: var(--cobalt); border-radius: 50%; box-shadow: 0 0 0 4px rgba(102,204,245,.12); }
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; }
.chip { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.04em; padding: 0.4rem 0.85rem; border: 1px solid var(--hair-up); border-radius: 100px; color: var(--mist); background: var(--deep2); }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(32px, 5vw, 64px); align-items: start; }
.book-card { background: var(--deep2); border: 1px solid var(--hair-up); border-radius: 12px; padding: clamp(30px, 3vw, 44px); box-shadow: 0 36px 70px -40px rgba(0,0,0,.6); position: relative; overflow: hidden; }
.book-card::before { content: ""; position: absolute; left: 0; top: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--cobalt), var(--cobalt-d)); }
.book-card h2 { margin-bottom: 0.8rem; }
.expect { list-style: none; padding: 0; margin: 1.7rem 0 0; display: grid; gap: 0.95rem; }
.expect li { padding-left: 1.8rem; position: relative; color: var(--mist); }
.expect li::before { content: ""; position: absolute; left: 0; top: 0.42em; width: 10px; height: 10px; border: 2px solid var(--cobalt); border-radius: 50%; }
.contact-list { display: grid; gap: 1.5rem; }
.contact-list a { text-decoration: none; }
.contact-row { display: block; padding-bottom: 1.3rem; border-bottom: 1px solid var(--hair); }
.contact-row:last-child { border-bottom: none; }
.contact-row .k { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--mist-dim); margin-bottom: 0.3rem; }
.contact-row .v { font-size: 1.18rem; color: var(--snow); transition: color .2s ease; }
a.contact-row:hover .v { color: var(--cobalt); }

/* ---------- footer ---------- */
.site-footer { background: var(--deep2); color: var(--mist); padding-block: clamp(52px, 6vw, 80px); position: relative; overflow: hidden; border-top: 1px solid var(--hair); }
.site-footer::before { content: ""; position: absolute; inset: 0; background: var(--dotgrid); background-size: 26px 26px; opacity: .4; -webkit-mask-image: linear-gradient(180deg, #000, transparent 60%); mask-image: linear-gradient(180deg, #000, transparent 60%); }
.site-footer > .wrap { position: relative; z-index: 1; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: clamp(28px, 4vw, 60px); margin-bottom: 2.8rem; }
.footer-brand .brand-name { color: var(--snow); }
.footer-tag { margin-top: 1rem; max-width: 36ch; color: var(--mist-dim); }
.footer-col h4 { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--mist-dim); margin: 0 0 1.1rem; font-weight: 500; }
.footer-col a, .footer-col p { display: block; text-decoration: none; color: var(--mist); margin: 0 0 0.65rem; font-size: 0.96rem; transition: color .2s ease; }
.footer-col a:hover { color: var(--cobalt); }
.footer-bottom { border-top: 1px solid var(--hair); padding-top: 1.7rem; display: flex; flex-wrap: wrap; gap: 0.6rem 1.4rem; justify-content: space-between; font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.04em; color: var(--mist-dim); }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s cubic-bezier(.22,.61,.36,1), transform .7s cubic-bezier(.22,.61,.36,1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 920px) {
  .hero-grid, .about-teaser, .svc-detail-grid, .about-hero-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-graphic { max-width: 440px; margin-top: 0.5rem; }
  .svc-grid, .steps, .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .nav {
    position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--deep2); border-bottom: 1px solid var(--hair); padding: 0.5rem var(--gut) 1.3rem;
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease;
  }
  .nav a:not(.btn) { padding: 0.9rem 0; border-bottom: 1px solid var(--hair); }
  .nav a:not(.btn)::after { display: none; }
  .nav-book { margin-top: 1rem; justify-content: center; }
  .nav-toggle:checked ~ .nav { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-burger { display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; width: 42px; height: 42px; cursor: pointer; }
  .nav-burger span, .nav-burger::before, .nav-burger::after { content: ""; display: block; height: 2px; width: 24px; background: var(--snow); transition: transform .2s ease, opacity .2s ease; }
  .nav-toggle:checked ~ .nav-burger::before { transform: translateY(7px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-burger span { opacity: 0; }
  .nav-toggle:checked ~ .nav-burger::after { transform: translateY(-7px) rotate(-45deg); }
}
@media (max-width: 560px) {
  .problem-grid, .svc-grid, .steps, .trust-grid, .fact-grid, .footer-top { grid-template-columns: 1fr; }
  .trust-item { border-left: none; border-top: 2px solid rgba(102,204,245,.32); padding-left: 0; padding-top: 1rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fog .dot, .fog .trend, .fog .arrow, .fog .glow { animation: none !important; opacity: 1 !important; stroke-dashoffset: 0 !important; transform: none !important; }
  .status-pill .live::after { animation: none; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .btn:hover, .svc-card:hover, .problem:hover { transform: none; }
}
:focus-visible { outline: 3px solid var(--cobalt); outline-offset: 3px; border-radius: 2px; }