@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Hanken+Grotesk:wght@400;500;600&family=Space+Mono&display=swap');

:root {
  /* palette — Forge & craft */
  --iv-forge: #16130F;        /* base background */
  --iv-forge-raise: #1E1A15;  /* raised surfaces / cards on dark */
  --iv-paper: #EDE6D8;        /* primary text on dark; light-section bg */
  --iv-paper-dim: #B8B1A4;    /* muted text on dark */
  --iv-ember: #C2562B;        /* accent — borders, progress, decorative (non-text) */
  --iv-ember-text: #D9682F;   /* ember for text/buttons — meets WCAG AA on forge (~5.3:1) */
  --iv-ember-bright: #E5763A; /* accent hover */
  --iv-steel: #7E7A70;        /* muted text / borders */
  --iv-line: #34302A;         /* hairline rules on dark */
  --iv-brass: #B08A4F;        /* rare secondary accent */

  /* type */
  --iv-serif: "Fraunces", Georgia, serif;
  --iv-sans: "Hanken Grotesk", system-ui, sans-serif;
  --iv-mono: "Space Mono", ui-monospace, monospace;

  /* fluid type scale */
  --iv-fs-display: clamp(2.8rem, 6vw, 5rem);
  --iv-fs-h1: clamp(2.2rem, 4.5vw, 3.4rem);
  --iv-fs-h2: clamp(1.6rem, 3vw, 2.2rem);
  --iv-fs-h3: 1.25rem;
  --iv-fs-body: 1.0625rem;
  --iv-fs-small: 0.8125rem;

  /* spacing + layout */
  --iv-maxw: 1140px;
  --iv-gut: clamp(1.25rem, 5vw, 4rem);
  --iv-radius: 10px;
  --iv-radius-lg: 16px;
  --iv-section-y: clamp(4rem, 10vw, 8rem);
  --iv-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--iv-forge);
  color: var(--iv-paper);
  font-family: var(--iv-sans);
  font-size: var(--iv-fs-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--iv-serif); font-weight: 500; line-height: 1.05; margin: 0; }
a { color: var(--iv-ember-text); text-decoration: none; }
a:hover { color: var(--iv-ember-bright); }
img { max-width: 100%; display: block; }
.iv-wrap { max-width: var(--iv-maxw); margin-inline: auto; padding-inline: var(--iv-gut); }
.iv-section { padding-block: var(--iv-section-y); }
.iv-eyebrow {
  font-family: var(--iv-mono); font-size: var(--iv-fs-small);
  letter-spacing: 0.15em; color: var(--iv-ember-text); text-transform: lowercase;
  display: inline-block; margin-bottom: 1rem;
}
:focus-visible { outline: 2px solid var(--iv-ember); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* buttons */
.iv-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--iv-sans); font-weight: 500; font-size: 1rem;
  padding: 0.85rem 1.6rem; border-radius: var(--iv-radius);
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.2s var(--iv-ease), background 0.2s var(--iv-ease);
}
.iv-btn--primary { background: var(--iv-ember-text); color: var(--iv-forge); }
.iv-btn--primary:hover { background: var(--iv-ember-bright); color: var(--iv-forge); transform: translateY(-2px); }
.iv-btn--ghost { background: transparent; color: var(--iv-paper); border-color: var(--iv-line); }
.iv-btn--ghost:hover { color: var(--iv-paper); border-color: var(--iv-steel); transform: translateY(-2px); }

/* nav */
.iv-nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--iv-forge) 88%, transparent); backdrop-filter: blur(8px); transition: padding 0.25s var(--iv-ease), background 0.25s var(--iv-ease); }
.iv-nav__inner { display: flex; align-items: center; justify-content: space-between; padding-block: 1.4rem; }
.iv-nav.is-condensed .iv-nav__inner { padding-block: 0.8rem; }
.iv-nav.is-condensed { border-bottom: 1px solid var(--iv-line); }
.iv-nav__brand { font-family: var(--iv-serif); font-size: 1.4rem; font-weight: 600; color: var(--iv-paper); letter-spacing: 0.02em; }
.iv-nav__links { display: flex; align-items: center; gap: 2rem; }
.iv-nav__links a:not(.iv-btn) { color: var(--iv-paper); font-size: 0.95rem; }
.iv-nav__links a:not(.iv-btn):hover { color: var(--iv-ember-text); }
.iv-nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.iv-nav__toggle span { width: 24px; height: 2px; background: var(--iv-paper); transition: 0.25s var(--iv-ease); }
@media (max-width: 760px) {
  .iv-nav__toggle { display: flex; }
  .iv-nav__links { position: fixed; inset: 0 0 0 auto; width: min(80vw, 320px); flex-direction: column; align-items: flex-start; justify-content: center; gap: 1.75rem; padding: 2rem; background: var(--iv-forge-raise); transform: translateX(100%); transition: transform 0.3s var(--iv-ease); }
  .iv-nav__links.is-open { transform: translateX(0); }
}

/* footer + reveal */
.iv-footer { border-top: 1px solid var(--iv-line); padding-block: 3rem 2rem; }
.iv-footer__inner { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: space-between; }
.iv-footer__brand { font-family: var(--iv-serif); font-size: 1.4rem; font-weight: 600; margin: 0; }
.iv-footer__tag { color: var(--iv-paper-dim); margin: 0.4rem 0 0; max-width: 32ch; }
.iv-footer__links { display: flex; flex-wrap: wrap; gap: 1.25rem; align-items: center; }
.iv-footer__links a { color: var(--iv-paper); font-size: 0.95rem; }
.iv-footer__base { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2.5rem; color: var(--iv-steel); font-size: var(--iv-fs-small); }
[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--iv-ease), transform 0.7s var(--iv-ease); }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* hero */
.iv-hero { padding-top: clamp(3rem, 8vw, 6rem); }
.iv-hero__title { font-size: var(--iv-fs-display); letter-spacing: -0.02em; max-width: 16ch; }
.iv-hero__lede { font-size: 1.25rem; color: var(--iv-paper-dim); max-width: 52ch; margin: 1.75rem 0 2.5rem; }
.iv-hero__cta { display: flex; flex-wrap: wrap; gap: 1rem; }

/* pillars + cards */
.iv-pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.iv-card { background: var(--iv-forge-raise); border: 1px solid var(--iv-line); border-radius: var(--iv-radius-lg); padding: 2rem; transition: transform 0.25s var(--iv-ease), border-color 0.25s var(--iv-ease); }
.iv-card:hover { transform: translateY(-4px); border-color: var(--iv-ember); }
.iv-card h3 { font-size: var(--iv-fs-h3); margin-bottom: 0.75rem; }
.iv-card p { color: var(--iv-paper-dim); margin: 0; }

/* selected work */
.iv-work { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }
.iv-tile { display: block; color: var(--iv-paper); }
.iv-tile__thumb { aspect-ratio: 16/10; border-radius: var(--iv-radius); background: var(--iv-forge-raise); border: 1px solid var(--iv-line); margin-bottom: 1rem; position: relative; overflow: hidden; transition: border-color 0.25s var(--iv-ease); }
.iv-tile__thumb::after { content: attr(data-label); position: absolute; inset: auto auto 0.75rem 1rem; font-family: var(--iv-mono); font-size: var(--iv-fs-small); color: var(--iv-steel); }
.iv-tile:hover .iv-tile__thumb { border-color: var(--iv-ember); }
.iv-tile h3 { font-size: var(--iv-fs-h3); margin-bottom: 0.4rem; }
.iv-tile p { color: var(--iv-paper-dim); margin: 0; font-size: 0.95rem; }

/* process steps */
.iv-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 2rem; }
.iv-step { border-top: 1px solid var(--iv-line); padding-top: 1.25rem; }
.iv-step__n { font-family: var(--iv-mono); color: var(--iv-ember-text); font-size: 1.1rem; display: block; margin-bottom: 0.75rem; }
.iv-step h3 { font-size: var(--iv-fs-h3); margin-bottom: 0.5rem; }
.iv-step p { color: var(--iv-paper-dim); margin: 0; }

/* cta band */
.iv-cta-band { background: var(--iv-paper); color: var(--iv-forge); border-radius: var(--iv-radius-lg); margin-block: var(--iv-section-y); }
.iv-cta-band__inner { padding-block: clamp(3rem, 7vw, 5rem); text-align: center; }
.iv-cta-band h2 { color: var(--iv-forge); font-size: var(--iv-fs-h1); }
.iv-cta-band p { color: #4a443c; max-width: 44ch; margin: 1rem auto 2rem; }

/* qualifier form */
.iv-form-wrap { max-width: 680px; }
.iv-form-intro { color: var(--iv-paper-dim); margin: 0.75rem 0 2rem; }
.iv-progress { height: 4px; background: var(--iv-line); border-radius: 2px; overflow: hidden; margin-bottom: 2.5rem; }
.iv-progress__bar { display: block; height: 100%; background: var(--iv-ember); transition: width 0.35s var(--iv-ease); }
.iv-hp { position: absolute; left: -9999px; width: 1px; height: 1px; }
.iv-step-panel { border: 0; padding: 0; margin: 0; display: none; }
.iv-step-panel.is-active { display: block; }
.iv-step-panel legend { font-family: var(--iv-serif); font-size: var(--iv-fs-h2); margin-bottom: 1.5rem; padding: 0; }
.iv-choices { display: grid; gap: 0.75rem; }
.iv-choices label { display: flex; align-items: center; gap: 0.75rem; background: var(--iv-forge-raise); border: 1px solid var(--iv-line); border-radius: var(--iv-radius); padding: 1rem 1.25rem; cursor: pointer; transition: border-color 0.2s var(--iv-ease); }
.iv-choices label:hover { border-color: var(--iv-steel); }
.iv-choices label:has(input:checked) { border-color: var(--iv-ember); }
.iv-choices input { accent-color: var(--iv-ember); width: 18px; height: 18px; flex: none; }
.iv-field { display: block; margin-bottom: 1.25rem; }
.iv-field span { display: block; font-size: 0.9rem; color: var(--iv-paper-dim); margin-bottom: 0.4rem; }
.iv-field input, .iv-field textarea { width: 100%; background: var(--iv-forge-raise); border: 1px solid var(--iv-line); border-radius: var(--iv-radius); color: var(--iv-paper); padding: 0.85rem 1rem; font: inherit; }
.iv-field input:focus, .iv-field textarea:focus { outline: 2px solid var(--iv-ember); outline-offset: 1px; border-color: transparent; }
.iv-qual__nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2rem; }
.iv-qual__error { color: var(--iv-ember-bright); margin-top: 1rem; }
.iv-qual__done { text-align: center; padding-block: 3rem; }