/* Hypocenter Initiative — V4
 * Combined tokens + base + components.
 * One file, single request. See v4/04-design-system.md for tokens spec.
 */

/* ---------- Tokens ---------- */
:root {
  /* Palette */
  --near-black:   #0F0E0D;
  --warm-black:   #1A1917;
  --ink:          #12100F;
  --charcoal:     #2E2C29;
  --ash:          #6D6A64;
  --stone:        #AAA398;
  --parchment:    #D8D1C5;
  --bone:         #EEEAE2;
  --earth-red:    #702F27;
  --earth-red-hover: #8A3D33;

  /* Fonts */
  --font-display: "Fraunces", "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono:    "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  /* Scale */
  --text-monument: clamp(56px, 12vw, 168px);
  --text-hero:     clamp(44px, 7vw, 88px);
  --text-display:  clamp(32px, 4.5vw, 56px);
  --text-h2:       clamp(24px, 2.6vw, 34px);
  --text-h3:       clamp(19px, 1.6vw, 22px);
  --text-body:     18px;
  --text-long:     20px;
  --text-meta:     12px;
  --text-caption:  13px;

  /* Line heights */
  --lh-monument: 0.92;
  --lh-display:  1.05;
  --lh-body:     1.55;
  --lh-long:     1.65;
  --lh-meta:     1.4;

  /* Grid */
  --max-w:  1280px;
  --gutter: 96px;
  --spine:  240px;
  --measure: 62ch;

  /* Motion */
  --tx-fast: 120ms;
  --ease:    cubic-bezier(0.2, 0, 0.2, 1);
}

@media (max-width: 1199px) {
  :root { --gutter: 56px; --spine: 200px; }
}
@media (max-width: 899px) {
  :root { --gutter: 32px; --spine: 0px; }
}
@media (max-width: 479px) {
  :root { --gutter: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--near-black);
  color: var(--bone);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--lh-body);
  font-feature-settings: "ss01", "ss03", "kern";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Light-surface variant (used inside .reading-light sections and legal pages) */
.on-light {
  background: var(--parchment);
  color: var(--ink);
}
.on-light a { color: var(--ink); }

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--bone);
  text-decoration: underline;
  text-decoration-color: rgba(238,234,226,0.25);
  text-underline-offset: 3px;
  transition: color var(--tx-fast) var(--ease), text-decoration-color var(--tx-fast) var(--ease);
}
a:hover { color: var(--earth-red-hover); text-decoration-color: var(--earth-red-hover); }
a:focus-visible { outline: 2px solid var(--earth-red); outline-offset: 2px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--bone); color: var(--ink); padding: 12px 16px;
  font-family: var(--font-mono); font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em; text-decoration: none;
  z-index: 100;
}
.skip:focus { left: 12px; top: 12px; }

/* ---------- Header ---------- */
.masthead {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px var(--gutter);
  background: var(--near-black);
  border-bottom: 1px solid rgba(238,234,226,0.06);
  backdrop-filter: blur(6px);
}
.masthead .mark {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--bone);
}
.masthead .mark:hover { color: var(--bone); text-decoration: none; }
.masthead nav {
  display: flex; gap: 32px; align-items: center;
}
.masthead nav a {
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  text-decoration: none;
  color: var(--stone);
  padding: 8px 0;
  transition: color var(--tx-fast) var(--ease);
}
.masthead nav a:hover { color: var(--bone); text-decoration: none; }
.masthead nav a[aria-current="page"] {
  color: var(--bone);
  border-bottom: 2px solid var(--earth-red);
  padding-bottom: 6px;
}

/* Mobile nav — hamburger + drawer */
.nav-toggle { display: none; }
@media (max-width: 719px) {
  .masthead nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: var(--near-black);
    border-bottom: 1px solid rgba(238,234,226,0.06);
    padding: 0 var(--gutter);
    max-height: 0; overflow: hidden;
    transition: max-height 200ms var(--ease);
  }
  .masthead nav a { padding: 20px 0; width: 100%; border-bottom: 1px solid rgba(238,234,226,0.06); }
  .masthead nav a:last-child { border-bottom: 0; }
  .masthead nav a[aria-current="page"] { border-bottom-color: var(--earth-red); }
  .nav-toggle {
    display: block; background: none; border: 0; padding: 8px;
    color: var(--bone); font-family: var(--font-mono); font-size: var(--text-meta);
    text-transform: uppercase; letter-spacing: 0.14em; cursor: pointer;
  }
  .masthead.nav-open nav { max-height: 400px; }
}

/* ---------- Layout primitives ---------- */
.wrap { max-width: var(--max-w); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.wrap-narrow { max-width: 900px; margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

/* Spine layout (long-form pages) */
.spine {
  max-width: var(--max-w); margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: var(--spine) 1fr;
  gap: 56px;
}
.spine .margin { color: var(--stone); }
.spine .body { max-width: var(--measure); }
@media (max-width: 899px) {
  .spine { grid-template-columns: 1fr; gap: 24px; }
  .spine .margin { order: -1; }
}

/* ---------- Typography components ---------- */
.datum {
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  line-height: var(--lh-meta);
  color: var(--stone);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin: 0;
}
.on-light .datum { color: var(--ash); }

.h-monument {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-monument);
  line-height: var(--lh-monument);
  letter-spacing: -0.02em;
  margin: 0;
}
.h-hero {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-hero);
  line-height: var(--lh-display);
  letter-spacing: -0.015em;
  margin: 0;
}
.h-display {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-display);
  line-height: var(--lh-display);
  letter-spacing: -0.01em;
  margin: 0;
}
.h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-h2);
  line-height: 1.15;
  margin: 0;
}
.h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-h3);
  line-height: 1.2;
  margin: 0;
}
.reading {
  max-width: var(--measure);
  font-size: var(--text-long);
  line-height: var(--lh-long);
  color: var(--bone);
}
.on-light .reading { color: var(--charcoal); }
.reading p { margin: 0 0 1.2em; }
.reading p:last-child { margin-bottom: 0; }

/* ---------- Sections ---------- */
section { padding: 96px 0; }
@media (max-width: 899px) { section { padding: 56px 0; } }

.section-open .eyebrow { margin-bottom: 24px; }
.section-open .headline { margin-bottom: 48px; }

/* Section separator (line + point) */
.sep {
  display: block; margin: 0 auto;
  width: 100%; max-width: 240px;
}

/* ---------- CTAs ---------- */
.cta-row {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 32px; margin-top: 40px;
}
.cta-primary, .cta-secondary {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em;
  text-decoration: none; padding: 4px 0;
  transition: gap var(--tx-fast) var(--ease), color var(--tx-fast) var(--ease);
}
.cta-primary {
  color: var(--earth-red-hover);
  border-bottom: 1px solid var(--earth-red);
  padding-bottom: 8px;
}
.cta-primary:hover { gap: 16px; color: var(--earth-red-hover); text-decoration: none; }
.cta-secondary { color: var(--bone); }
.cta-secondary:hover { color: var(--bone); text-decoration: none; gap: 16px; }
.on-light .cta-primary { color: var(--earth-red); border-bottom-color: var(--earth-red); }
.on-light .cta-secondary { color: var(--ink); }

/* Button (form submit) */
.btn {
  display: inline-block; cursor: pointer;
  font-family: var(--font-mono); font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em;
  padding: 18px 32px;
  background: var(--earth-red); color: var(--bone);
  border: 0; text-decoration: none;
  transition: background var(--tx-fast) var(--ease);
}
.btn:hover { background: var(--earth-red-hover); color: var(--bone); text-decoration: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn:focus-visible { outline: 2px solid var(--bone); outline-offset: 2px; }

/* ---------- Home hero ---------- */
.hero {
  min-height: 88vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 120px var(--gutter) 96px;
  max-width: var(--max-w); margin: 0 auto;
  position: relative;
}
.hero .eyebrow { margin-bottom: 40px; }
.hero .monument { margin-bottom: 48px; max-width: 12ch; }
.hero .support { max-width: 58ch; color: var(--stone); font-size: var(--text-long); line-height: var(--lh-long); }
.hero .cta-row { margin-top: 56px; }

/* Reference panel (small mono list) */
.ref {
  font-family: var(--font-mono); font-size: var(--text-meta);
  line-height: 1.8; color: var(--stone);
  list-style: none; padding: 0; margin: 0;
}
.ref li { padding: 8px 0; border-bottom: 1px solid rgba(238,234,226,0.08); }
.ref li:last-child { border-bottom: 0; }

/* Fit panels */
.fit {
  display: grid; grid-template-columns: 1fr 1fr; gap: 96px;
  max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter);
}
.fit ul { list-style: none; padding: 0; margin: 24px 0 0; }
.fit li {
  font-size: var(--text-long); line-height: 1.5;
  padding: 16px 0; border-top: 1px solid rgba(238,234,226,0.08);
  color: var(--bone);
}
.on-light .fit li { border-color: rgba(18,16,15,0.15); color: var(--charcoal); }
@media (max-width: 899px) {
  .fit { grid-template-columns: 1fr; gap: 48px; }
}

/* Six-dimensions editorial grid */
.dimensions {
  max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter);
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 48px 32px;
}
.dimension {
  grid-column: span 3;
  padding: 32px 0;
  border-top: 1px solid rgba(238,234,226,0.12);
}
.dimension:nth-child(1) { grid-column: 1 / span 4; }
.dimension:nth-child(2) { grid-column: 5 / span 2; }
.dimension:nth-child(3) { grid-column: 1 / span 2; }
.dimension:nth-child(4) { grid-column: 3 / span 4; }
.dimension:nth-child(5) { grid-column: 1 / span 3; }
.dimension:nth-child(6) { grid-column: 4 / span 3; }
.dimension .roman {
  font-family: var(--font-mono); font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--earth-red-hover);
  display: block; margin-bottom: 16px;
}
.dimension h3 {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(24px, 2.4vw, 32px); line-height: 1.1;
  margin: 0 0 16px;
}
.dimension p {
  font-size: 17px; line-height: 1.55; color: var(--stone); margin: 0;
}
@media (max-width: 899px) {
  .dimensions { grid-template-columns: 1fr; gap: 0; }
  .dimension { grid-column: 1 !important; }
}

/* Method beats */
.beats {
  max-width: 900px; margin: 0 auto; padding: 0 var(--gutter);
  display: grid; grid-template-columns: 1fr; gap: 0;
}
.beat {
  display: grid; grid-template-columns: 220px 1fr; gap: 24px;
  padding: 28px 0; border-top: 1px solid rgba(238,234,226,0.12);
}
.beat:last-child { border-bottom: 1px solid rgba(238,234,226,0.12); }
.beat .label {
  font-family: var(--font-mono); font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--stone);
}
.beat .text { font-size: var(--text-body); line-height: 1.55; color: var(--bone); }
@media (max-width: 599px) {
  .beat { grid-template-columns: 1fr; gap: 4px; }
}

/* Credo block */
.credo {
  background: var(--warm-black);
  padding: 160px var(--gutter);
  text-align: center;
  border-top: 1px solid rgba(238,234,226,0.06);
}
.credo p {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(28px, 4vw, 48px); line-height: 1.2;
  margin: 0 0 8px; color: var(--bone);
  letter-spacing: -0.01em;
}
.credo p:last-child { margin-bottom: 0; }

/* Long-form philosophy — command openers */
.command {
  padding: 96px 0 32px;
  border-top: 1px solid rgba(238,234,226,0.12);
}
.command:first-of-type { border-top: 0; padding-top: 40px; }
.command .roman-big {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(72px, 12vw, 144px); line-height: 0.9;
  color: var(--earth-red-hover);
  letter-spacing: -0.02em;
  margin: 0 0 32px;
  display: block;
}
.command .title {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(32px, 4vw, 48px); line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 48px;
  text-transform: uppercase;
}

/* Footer */
.footer {
  background: var(--warm-black);
  padding: 96px var(--gutter) 48px;
  border-top: 1px solid rgba(238,234,226,0.06);
  color: var(--stone);
}
.footer .grid {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 56px;
}
.footer .brand {
  font-family: var(--font-display); font-weight: 500;
  font-size: 20px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--bone); margin-bottom: 12px;
}
.footer h4 {
  font-family: var(--font-mono); font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--stone);
  margin: 0 0 16px; font-weight: 400;
}
.footer p, .footer a {
  display: block; font-size: 14px; line-height: 1.9;
  color: var(--stone); text-decoration: none; margin: 0;
}
.footer a:hover { color: var(--bone); }
.footer .bottom {
  max-width: var(--max-w); margin: 72px auto 0;
  padding-top: 32px; border-top: 1px solid rgba(238,234,226,0.06);
  font-family: var(--font-mono); font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ash);
}
@media (max-width: 899px) {
  .footer .grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 599px) {
  .footer .grid { grid-template-columns: 1fr; }
}

/* Form */
.form { max-width: 720px; margin: 0 auto; padding: 0 var(--gutter); }
.form-header { max-width: 720px; margin: 0 auto; padding: 0 var(--gutter); }
.form fieldset { border: 0; padding: 0; margin: 0 0 56px; }
.form legend {
  font-family: var(--font-mono); font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--earth-red-hover);
  padding: 0; margin-bottom: 32px;
}
.form .field { margin-bottom: 32px; }
.form label {
  display: block;
  font-family: var(--font-body); font-size: 15px; font-weight: 500;
  color: var(--bone); margin-bottom: 10px;
}
.form label .req { color: var(--earth-red-hover); margin-left: 4px; }
.form input[type="text"],
.form input[type="email"],
.form select,
.form textarea {
  width: 100%;
  box-sizing: border-box;
  display: block;
  padding: 14px 16px;
  background: rgba(238, 234, 226, 0.04);
  border: 1px solid rgba(238, 234, 226, 0.14);
  color: var(--bone);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  border-radius: 2px;
  transition: border-color var(--tx-fast) var(--ease), background-color var(--tx-fast) var(--ease);
}
.form textarea { min-height: 96px; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus {
  outline: 0;
  border-color: var(--earth-red);
  background: rgba(238, 234, 226, 0.06);
}
.form select {
  appearance: none; -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--stone) 50%),
                    linear-gradient(135deg, var(--stone) 50%, transparent 50%);
  background-position: right 4px top 22px, right 0 top 22px;
  background-size: 4px 4px, 4px 4px;
  background-repeat: no-repeat;
  padding-right: 20px;
}
.form select option { background: var(--warm-black); color: var(--bone); }
.form .check {
  display: grid; grid-template-columns: 24px 1fr; gap: 16px;
  align-items: start; margin-bottom: 20px;
  padding: 4px 0;
}
.form .check input[type="checkbox"] {
  width: 20px; height: 20px; margin-top: 2px;
  accent-color: var(--earth-red);
}
.form .check label {
  font-size: 15px; line-height: 1.5; color: var(--stone); margin: 0;
  font-weight: 400;
}
.form .honey { position: absolute; left: -9999px; }
.form .submit-row {
  display: flex; align-items: center; gap: 32px; margin-top: 48px;
  flex-wrap: wrap;
}
.form .submit-row .caption {
  font-family: var(--font-mono); font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ash);
}
.form .error, .form .success {
  padding: 20px; margin: 24px 0;
  font-family: var(--font-mono); font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em;
}
.form .error {
  background: rgba(112,47,39,0.15); color: var(--earth-red-hover);
  border-left: 2px solid var(--earth-red);
}
.form .success {
  background: rgba(238,234,226,0.06); color: var(--bone);
  border-left: 2px solid var(--bone);
}

/* Legal / long-form on parchment */
.legal-body { background: var(--parchment); color: var(--ink); padding: 96px 0; }
.legal-body h1 { font-family: var(--font-display); font-weight: 400; font-size: var(--text-display); margin: 0 0 48px; }
.legal-body h2 { font-family: var(--font-display); font-weight: 500; font-size: var(--text-h2); margin: 48px 0 24px; }
.legal-body p, .legal-body li { font-size: 17px; line-height: 1.7; max-width: 66ch; color: var(--charcoal); }
.legal-body a { color: var(--earth-red); text-decoration-color: rgba(112,47,39,0.3); }
.legal-body a:hover { color: var(--earth-red-hover); text-decoration-color: var(--earth-red-hover); }
/* Meta labels on parchment need ink to pass WCAG AA body-text contrast */
.legal-body .datum { color: var(--charcoal); }

/* Full-width photo blocks */
.photo-full {
  display: block; width: 100%;
  aspect-ratio: 21 / 9;
  background-size: cover; background-position: center;
  background-color: var(--warm-black);
}
.photo-full.tall { aspect-ratio: 3 / 2; }
.photo-caption {
  max-width: var(--max-w); margin: 24px auto 0;
  padding: 0 var(--gutter);
  font-family: var(--font-mono); font-size: var(--text-meta);
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ash);
}

/* Utility */
.hidden { display: none !important; }
.mono { font-family: var(--font-mono); }
.center { text-align: center; }
.stack > * + * { margin-top: 24px; }
.stack-lg > * + * { margin-top: 48px; }