/* ==========================================================================
   Elk Capital
   Second design pass. The first version used a warm serif on near-black with a
   brass accent, which read as a generic AI-studio look. This one is built on a
   navy-and-white identity with a geometric display face, so it reads as a
   settled, trustworthy production company rather than a design exercise.

   Palette verified for WCAG AA at small-text size on every surface pairing.
   ========================================================================== */

:root {
  /* Surface */
  --white:     #FFFFFF;
  --mist:      #F3F6FB;   /* cool off-white section background */
  --navy:      #0A2740;   /* deep brand navy, dark sections */
  --navy-soft: #123256;   /* raised panels on navy */

  /* Blue */
  --blue:        #1D4ED8;  /* primary action, links on light */
  --blue-deep:   #163CA8;  /* button hover */
  --blue-bright: #5B9BFF;  /* accents and links on navy */
  --blue-wash:   #E7EEFB;  /* faint fill for tags/quiet panels */

  /* Text */
  --ink:          #0C1A2B;
  --muted:        #51607A;
  --on-navy:      #FFFFFF;
  --on-navy-muted:#A7BBD1;

  /* Lines */
  --line:      #DBE3EE;
  --line-navy: rgba(255,255,255,0.14);

  /* Type */
  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body:    "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

  /* Spacing */
  --s-1: 8px;  --s-2: 16px; --s-3: 24px; --s-4: 40px;
  --s-5: 64px; --s-6: 96px; --s-7: 132px;

  --maxw: 1200px;
  --gutter: 24px;
  --radius: 8px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0 0 var(--s-2); text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

a { color: var(--blue); }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 3px;
}

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

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--navy); color: #fff; padding: 12px 20px; z-index: 999;
}
.skip:focus { left: 12px; top: 12px; }

/* ---------- Type utilities ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0 0 var(--s-3);
  font-weight: 500;
}
.eyebrow-navy { color: var(--blue-bright); }

.h-sec { font-size: clamp(1.9rem, 4vw, 3rem); max-width: 22ch; }
.lede {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  color: var(--muted);
  max-width: 60ch;
  line-height: 1.6;
}

.section { padding-block: var(--s-6); }
.section-tight { padding-block: var(--s-5); }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 26px;
  border: 1.5px solid transparent; border-radius: var(--radius);
  font-family: var(--font-body); font-size: 15px; font-weight: 600;
  letter-spacing: 0.01em; text-decoration: none; cursor: pointer;
  transition: background-color 180ms var(--ease), color 180ms var(--ease),
              border-color 180ms var(--ease), transform 120ms var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-deep); }
.btn-on-navy-ghost { background: transparent; color: #fff; border-color: var(--line-navy); }
.btn-on-navy-ghost:hover { border-color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); }

/* ==========================================================================
   NAV
   ========================================================================== */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background-color 260ms var(--ease), border-color 260ms var(--ease);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between; gap: var(--s-3);
  height: 72px;
}
.brand {
  font-family: var(--font-display); font-size: 19px; font-weight: 700;
  letter-spacing: -0.01em; text-decoration: none; color: #fff;
  transition: color 260ms var(--ease); white-space: nowrap;
}
.brand::before {
  content: ""; display: inline-block; width: 10px; height: 10px;
  margin-right: 10px; border-radius: 2px; background: var(--blue-bright);
  transform: rotate(45deg); vertical-align: baseline;
}
.nav-links { display: flex; gap: var(--s-3); list-style: none; margin: 0; padding: 0; }
.nav-links a {
  font-size: 14px; font-weight: 500; text-decoration: none;
  color: var(--on-navy-muted); padding: 8px 2px; transition: color 160ms var(--ease);
}
.nav-links a:hover { color: #fff; }

.nav.is-stuck {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
}
.nav.is-stuck .brand { color: var(--ink); }
.nav.is-stuck .brand::before { background: var(--blue); }
.nav.is-stuck .nav-links a { color: var(--muted); }
.nav.is-stuck .nav-links a:hover { color: var(--ink); }
.nav.is-stuck .btn-on-navy-ghost { color: var(--ink); border-color: var(--line); }
.nav.is-stuck .btn-on-navy-ghost:hover { border-color: var(--ink); }
.nav-cta { flex-shrink: 0; }

/* ==========================================================================
   HERO  —  typographic, no video dependency
   ========================================================================== */
.hero {
  position: relative; background: var(--navy); color: #fff;
  padding-block: 150px var(--s-6); overflow: hidden;
}
/* Quiet geometric field, drawn in CSS so nothing can fail to load. */
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0; opacity: 0.5;
  background:
    radial-gradient(680px 480px at 88% -10%, rgba(91,155,255,0.20), transparent 60%),
    radial-gradient(520px 520px at 8% 110%, rgba(29,78,216,0.22), transparent 60%);
}
.hero-grid {
  content: ""; position: absolute; inset: 0; z-index: 0; opacity: 0.4;
  background-image:
    linear-gradient(var(--line-navy) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-navy) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 90% at 70% 0%, #000 30%, transparent 75%);
          mask-image: radial-gradient(120% 90% at 70% 0%, #000 30%, transparent 75%);
}
.hero-inner { position: relative; z-index: 1; }
.hero h1 {
  font-size: clamp(2.5rem, 6.4vw, 5rem);
  max-width: 17ch; margin-bottom: var(--s-3); color: #fff;
}
.hero .lede { color: rgba(255,255,255,0.82); max-width: 58ch; font-size: clamp(1.1rem,1.6vw,1.28rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--s-2); margin-top: var(--s-4); }

.hero-band {
  position: relative; z-index: 1;
  display: flex; flex-wrap: wrap; gap: var(--s-4);
  margin-top: var(--s-5); padding-top: var(--s-3);
  border-top: 1px solid var(--line-navy);
}
.hero-band div { min-width: 140px; }
.hero-band .n {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem); color: var(--blue-bright); line-height: 1;
  font-variant-numeric: tabular-nums; margin-bottom: 6px;
}
.hero-band .l { font-size: 14px; color: var(--on-navy-muted); }

/* ==========================================================================
   PROOF STRIP
   ========================================================================== */
.proof { background: var(--mist); }
.proof-note { color: var(--muted); max-width: 74ch; font-size: 16px; }

/* ==========================================================================
   PROBLEM
   ========================================================================== */
.problem { background: var(--white); }
.problem-body { max-width: 62ch; margin-top: var(--s-4); font-size: clamp(1.05rem,1.4vw,1.18rem); line-height: 1.7; color: var(--ink); }
.problem-body p + p { margin-top: var(--s-2); }
.problem-kicker {
  margin-top: var(--s-4); padding-left: var(--s-3);
  border-left: 3px solid var(--blue);
  font-family: var(--font-display); font-weight: 500;
  font-size: clamp(1.2rem, 2vw, 1.55rem); line-height: 1.32; color: var(--ink);
}

/* ==========================================================================
   SERVICES
   ========================================================================== */
.services { background: var(--mist); }
.svc-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--s-3);
  margin-top: var(--s-5);
}
.svc {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: var(--s-4); display: flex; flex-direction: column; gap: var(--s-2);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}
.svc:hover { border-color: var(--blue); transform: translateY(-2px); }
.svc-tag {
  align-self: flex-start; font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--blue);
  background: var(--blue-wash); padding: 5px 10px; border-radius: 5px;
}
.svc h3 { font-size: clamp(1.35rem, 2vw, 1.7rem); }
.svc p { color: var(--muted); font-size: 16px; margin: 0; }

/* ==========================================================================
   PROCESS  —  the structural signature
   ========================================================================== */
.process { background: var(--white); }
.phases { margin-top: var(--s-5); }
.phase {
  display: grid; grid-template-columns: 120px 1fr; gap: var(--s-4);
  position: relative; padding-bottom: var(--s-5);
}
.phase-rail { position: relative; }
.phase-rail::before {
  content: ""; position: absolute; left: 6px; top: 22px; bottom: calc(-1 * var(--s-5));
  width: 2px; background: var(--line);
}
.phase:last-of-type .phase-rail::before { display: none; }
.phase-node {
  position: absolute; left: 0; top: 6px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--white); border: 2px solid var(--blue);
}
.phase-num {
  display: block; padding-left: 30px; padding-top: 2px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted);
}
.phase h3 { font-size: clamp(1.4rem, 2.2vw, 1.85rem); margin-bottom: var(--s-2); }
.phase p { color: var(--muted); max-width: 60ch; }
.phase-deliv {
  margin-top: var(--s-2); padding-top: var(--s-2); border-top: 1px solid var(--line);
  font-size: 15px; max-width: 60ch; color: var(--ink);
}
.phase-deliv strong {
  display: block; margin-bottom: 4px; font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--blue); font-weight: 500;
}

.handoff { display: grid; grid-template-columns: 120px 1fr; gap: var(--s-4); position: relative; padding-bottom: var(--s-5); }
.handoff-rail { position: relative; }
.handoff-rail::before {
  content: ""; position: absolute; left: 6px; top: -64px; bottom: calc(-1 * var(--s-5));
  width: 2px; background: var(--line);
}
.handoff-node {
  position: absolute; left: -3px; top: 4px; width: 20px; height: 20px; border-radius: 50%;
  background: var(--blue); box-shadow: 0 0 0 6px rgba(29,78,216,0.14);
}
.handoff-card { background: var(--navy); color: #fff; padding: var(--s-4); border-radius: var(--radius); }
.handoff-card .eyebrow { color: var(--blue-bright); margin-bottom: var(--s-2); }
.handoff-card h3 { color: #fff; font-size: clamp(1.4rem, 2.2vw, 1.85rem); margin-bottom: var(--s-2); }
.handoff-card p { color: rgba(255,255,255,0.82); max-width: 58ch; }

/* ==========================================================================
   TRACK RECORD  (replaces the old fabricated case study)
   ========================================================================== */
.record { background: var(--navy); color: #fff; }
.record .h-sec { color: #fff; }
.record .eyebrow { color: var(--blue-bright); }
.record-lede { color: rgba(255,255,255,0.82); max-width: 60ch; margin-top: var(--s-2); font-size: 1.12rem; }
.record-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--line-navy); border: 1px solid var(--line-navy);
  border-radius: var(--radius); overflow: hidden; margin-top: var(--s-5);
}
.record-cell { background: var(--navy); padding: var(--s-4); }
.record-cell .n {
  font-family: var(--font-display); font-weight: 700; line-height: 1;
  font-size: clamp(2rem, 3.6vw, 3rem); color: var(--blue-bright);
  font-variant-numeric: tabular-nums; margin-bottom: 10px;
}
.record-cell .l { color: var(--on-navy-muted); font-size: 15px; margin: 0; }

/* ==========================================================================
   WHY
   ========================================================================== */
.why { background: var(--mist); }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-5) var(--s-4); margin-top: var(--s-5); }
.why-item h3 { font-size: 1.24rem; margin-bottom: 10px; padding-top: var(--s-2); border-top: 2px solid var(--blue); }
.why-item p { color: var(--muted); font-size: 16px; margin: 0; }

/* ==========================================================================
   INVESTMENT
   ========================================================================== */
.invest { background: var(--white); }
.tiers { margin-top: var(--s-5); border-top: 2px solid var(--ink); }
.tier {
  display: grid; grid-template-columns: 260px 1fr; gap: var(--s-3);
  align-items: baseline; padding: var(--s-3) 0; border-bottom: 1px solid var(--line);
}
.tier h3 { font-size: 1.3rem; }
.tier p { color: var(--muted); font-size: 16px; margin: 0; }
.invest-note { margin-top: var(--s-3); font-size: 15px; color: var(--muted); max-width: 70ch; }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq { background: var(--mist); }
.faq-list { margin-top: var(--s-5); border-top: 1px solid var(--line); max-width: 860px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; background: none; border: 0; text-align: left;
  font-family: var(--font-body); font-size: 1.05rem; font-weight: 600; color: var(--ink);
  padding: var(--s-3) 44px var(--s-3) 0; min-height: 48px; cursor: pointer;
  position: relative; display: block; transition: color 160ms var(--ease);
}
.faq-q:hover { color: var(--blue); }
.faq-q::after {
  content: ""; position: absolute; right: 8px; top: 50%; width: 11px; height: 11px;
  margin-top: -8px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: rotate(45deg); transition: transform 240ms var(--ease);
}
.faq-q[aria-expanded="true"]::after { transform: rotate(-135deg); margin-top: -3px; }
.faq-a { overflow: hidden; max-height: 0; transition: max-height 300ms var(--ease); }
.faq-a-inner { padding: 0 var(--s-5) var(--s-3) 0; color: var(--muted); }

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact { background: var(--navy); color: #fff; }
.contact .h-sec { color: #fff; }
.contact .eyebrow { color: var(--blue-bright); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: var(--s-6); margin-top: var(--s-4); align-items: start; }
.contact-lede { color: rgba(255,255,255,0.82); max-width: 44ch; font-size: 1.1rem; }
.contact-direct { margin-top: var(--s-4); border-top: 1px solid var(--line-navy); padding-top: var(--s-3); }
.contact-direct a {
  font-family: var(--font-mono); font-size: 15px; color: #fff; text-decoration: none;
  border-bottom: 1px solid var(--blue-bright); padding-bottom: 3px;
}
.contact-direct a:hover { color: var(--blue-bright); }

.field { margin-bottom: var(--s-3); }
.field label {
  display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--on-navy-muted); margin-bottom: 8px;
}
.field input, .field select, .field textarea {
  width: 100%; min-height: 48px; background: rgba(255,255,255,0.04);
  border: 1px solid var(--line-navy); color: #fff; font-family: var(--font-body);
  font-size: 16px; padding: 12px 14px; border-radius: 6px;
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease);
}
.field textarea { min-height: 104px; resize: vertical; }
.field select { appearance: none; cursor: pointer; }
.field select option { background: var(--navy-soft); color: #fff; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: rgba(255,255,255,0.32); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue-bright); background: rgba(255,255,255,0.07);
}
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: #FF8A80; }
.err { display: none; color: #FFB4AB; font-size: 13px; margin-top: 6px; }
.field.has-error .err { display: block; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-3); }
.form-note { font-size: 13px; color: var(--on-navy-muted); margin-top: var(--s-2); }

.form-success {
  display: none; border: 1px solid var(--blue-bright); border-radius: var(--radius);
  padding: var(--s-4); background: rgba(91,155,255,0.08);
}
.form-success h3 { color: var(--blue-bright); font-size: 1.5rem; margin-bottom: var(--s-1); }
.form-success p { color: rgba(255,255,255,0.82); margin: 0; }
.is-sent .form-success { display: block; }
.is-sent form { display: none; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.foot { background: var(--navy); color: var(--on-navy-muted); border-top: 1px solid var(--line-navy); padding-block: var(--s-5) var(--s-4); font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--s-4); padding-bottom: var(--s-4); }
.foot-brand { font-family: var(--font-display); font-size: 18px; font-weight: 700; color: #fff; margin-bottom: var(--s-2); }
.foot h4 { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: #fff; font-weight: 500; margin: 0 0 var(--s-2); }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin-bottom: 8px; }
.foot a { text-decoration: none; color: var(--on-navy-muted); transition: color 160ms var(--ease); }
.foot a:hover { color: #fff; }
.foot-bottom { border-top: 1px solid var(--line-navy); padding-top: var(--s-3); display: flex; justify-content: space-between; gap: var(--s-3); flex-wrap: wrap; font-size: 13px; }

/* ==========================================================================
   MOTION
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 560ms var(--ease), transform 560ms var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
  .faq-a { transition: none; }
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .record-grid { grid-template-columns: 1fr; }
  .contact-grid { gap: var(--s-5); }
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  :root { --gutter: 20px; --s-6: 72px; }
  body { font-size: 16px; }
  .svc-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; gap: var(--s-4); }
  .phase, .handoff { grid-template-columns: 1fr; gap: var(--s-2); }
  .phase-rail, .handoff-rail { display: none; }
  .phase-num { padding-left: 0; }
  .tier { grid-template-columns: 1fr; gap: 6px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .hero { padding-block: 124px var(--s-5); }
  .hero-actions .btn { width: 100%; }
  .foot-grid { grid-template-columns: 1fr; }
}