/* Areteon Ventures — design system
   Palette and voice per the AV brand pack. Dark theme locked throughout;
   no light-mode section flips. System font stacks only (zero third-party
   requests, zero font-loading layout shift). */

:root {
  --ink: #0A0B08;
  --ink-deep: #060705;
  --cream: #EFEAE0;
  --maroon: #6B1F24;
  --maroon-bright: #7E2530;
  --gold: #B4903E;
  --sand: #D9BE84;
  --taupe: #948F81;

  --font-display: "Iowan Old Style", "Palatino Linotype", "Palatino", Georgia, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --space-7: 9rem;

  --radius: 3px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --max-w: 72rem;
}

* { box-sizing: border-box; }

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  opacity: 0;
  animation: page-fade-in 500ms var(--ease-out) forwards;
}
@keyframes page-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

a {
  color: var(--sand);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: var(--gold); }

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 2px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--cream);
  line-height: 1.15;
  text-wrap: balance;
  margin: 0;
}

p { text-wrap: pretty; }

.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -3rem;
  background: var(--gold);
  color: var(--ink);
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  font-weight: 600;
  z-index: 100;
  transition: top 150ms var(--ease-out);
}
.skip-link:focus { top: var(--space-2); }

/* ---- Header ---- */
.site-header {
  position: absolute;
  inset-inline: 0;
  top: 0;
  z-index: 20;
  padding: var(--space-3) 0;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.brand {
  display: flex;
  align-items: center;
  color: var(--cream);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 2.1rem;
  letter-spacing: 0.01em;
}
.brand:hover { color: var(--cream); }
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.site-nav a {
  color: var(--cream);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}
.site-nav a:hover { color: var(--gold); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 150ms var(--ease-out), background-color 150ms var(--ease-out), border-color 150ms var(--ease-out);
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--maroon);
  color: var(--cream);
}
.btn-primary:hover { background: var(--maroon-bright); color: var(--cream); }
.btn-ghost {
  background: transparent;
  border-color: color-mix(in srgb, var(--cream) 35%, transparent);
  color: var(--cream);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  background: transparent;
}
/* Fixed to the viewport (not .hero) so the mountain stays put as the whole
   page scrolls over it; sections below layer progressively darker tints on
   top so the same image reads as dusk settling in, rather than a hard cut
   to flat black. */
.hero-media {
  position: fixed;
  inset: 0;
  z-index: -1;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 70%;
  animation: ambient-zoom 60s ease-in-out infinite alternate;
}
@keyframes ambient-zoom {
  from { transform: scale(1); }
  to { transform: scale(1.08); }
}
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgba(6, 7, 5, 0.82) 0%, rgba(6, 7, 5, 0.3) 38%, rgba(6, 7, 5, 0.04) 60%, rgba(6, 7, 5, 0.22) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-block: var(--space-6) var(--space-6);
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  letter-spacing: -0.01em;
  max-width: 18ch;
}
.hero .lede {
  margin-top: var(--space-2);
  max-width: 46ch;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--sand);
}
.hero-actions {
  margin-top: var(--space-4);
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* ---- Sections ---- */
/* Each section below the hero tints the fixed mountain a little darker than
   the last, so the image keeps reading through the whole page and the site
   feels like one continuous scene rather than photo-then-flat-black. */
section { position: relative; }
.section {
  padding-block: var(--space-6);
}
#mission {
  background: color-mix(in srgb, var(--ink) 72%, transparent);
}
.section-maroon {
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--ink) 82%, transparent) 0%,
    color-mix(in srgb, var(--maroon) 92%, transparent) 50%,
    color-mix(in srgb, var(--ink) 90%, transparent) 100%);
}
#ventures {
  background: color-mix(in srgb, var(--ink) 92%, transparent);
}
#contact {
  background: color-mix(in srgb, var(--ink) 98%, transparent);
}

.section-head {
  max-width: 42rem;
  margin-bottom: var(--space-5);
}
.section-head::before {
  content: "";
  display: block;
  width: 2.5rem;
  height: 2px;
  background: var(--gold);
  margin-bottom: var(--space-2);
}
.section-head h2 {
  font-size: clamp(1.9rem, 3.2vw, 2.75rem);
}
.section-maroon h2 {
  color: var(--gold);
}
.section-head .kicker {
  display: block;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--sand);
  margin-bottom: var(--space-1);
}

/* Mission pull-quote — centered as the page's calm, deliberate midpoint */
#mission .container > [data-reveal] {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.mission-quote {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.35;
  color: var(--cream);
  max-width: 34ch;
  margin-inline: auto;
}
.mission-quote em {
  color: var(--gold);
  font-style: normal;
}
.mission-sub {
  margin-top: var(--space-4);
  margin-inline: auto;
  max-width: 56ch;
  color: var(--sand);
  font-size: 1.05rem;
}

/* Tests list — deliberately not a 3-card grid */
.tests-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid color-mix(in srgb, var(--cream) 18%, transparent);
}
.tests-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  gap: var(--space-3) var(--space-5);
  padding-block: var(--space-4);
  padding-inline-start: var(--space-2);
  margin-inline-start: calc(var(--space-2) * -1);
  border-bottom: 1px solid color-mix(in srgb, var(--cream) 18%, transparent);
  align-items: baseline;
}
@media (hover: hover) and (pointer: fine) {
  .tests-item {
    transition: background-color 200ms var(--ease-out), transform 200ms var(--ease-out);
  }
  .tests-item:hover {
    background-color: color-mix(in srgb, var(--gold) 10%, transparent);
    transform: translateX(0.5rem);
  }
}
.tests-item h3 {
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
}
.tests-item p {
  color: var(--sand);
  max-width: 52ch;
  margin: 0;
}
.tests-item:nth-child(2) { padding-inline-start: var(--space-5); }
.tests-item:nth-child(3) { padding-inline-start: var(--space-7); }

/* Ventures / portfolio */
.ventures-empty {
  border: 1px solid color-mix(in srgb, var(--gold) 45%, transparent);
  border-radius: var(--radius);
  padding: var(--space-4);
  max-width: 42rem;
}
.ventures-empty p { margin: 0; color: var(--sand); }
.ventures-empty p + p { margin-top: var(--space-2); }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-5);
}
@media (min-width: 60rem) {
  .contact-grid { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1fr); }
}
.field {
  margin-bottom: var(--space-3);
}
.field label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cream);
  margin-bottom: 0.4rem;
  transition: color 150ms var(--ease-out), transform 150ms var(--ease-out);
}
.field:focus-within label {
  color: var(--gold);
  transform: translateY(-2px);
}
.field input,
.field textarea {
  width: 100%;
  background: var(--ink-deep);
  border: 1px solid color-mix(in srgb, var(--cream) 30%, transparent);
  border-radius: var(--radius);
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.8rem 0.9rem;
  transition: border-color 150ms var(--ease-out), box-shadow 200ms var(--ease-out);
}
.field input::placeholder,
.field textarea::placeholder { color: color-mix(in srgb, var(--cream) 55%, transparent); }
.field input:hover,
.field textarea:hover { border-color: color-mix(in srgb, var(--cream) 50%, transparent); }
.field input:focus-visible,
.field textarea:focus-visible {
  border-color: var(--gold);
  outline: 2px solid var(--gold);
  outline-offset: 1px;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--gold) 18%, transparent);
}
.field textarea { min-height: 9rem; resize: vertical; }
.field-error {
  display: none;
  color: #E8A0A0;
  font-size: 0.85rem;
  margin-top: 0.4rem;
}
.field.has-error input,
.field.has-error textarea { border-color: #C4544F; }
.field.has-error .field-error { display: block; }

.consent {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin-block: var(--space-3);
}
.consent input[type="checkbox"] {
  margin-top: 0.25rem;
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--gold);
  flex: none;
}
.consent label { font-size: 0.9rem; color: var(--sand); }
.consent a { color: var(--sand); }

.form-status {
  margin-top: var(--space-2);
  font-size: 0.9rem;
}
.form-status[data-state="success"] { color: var(--sand); }
.form-status[data-state="error"] { color: #E8A0A0; }

.contact-details h3 { font-size: 1.35rem; margin-bottom: var(--space-2); }
.contact-details p { color: var(--sand); max-width: 34ch; }

/* Footer */
.site-footer {
  background: var(--ink);
  border-top: 1px solid color-mix(in srgb, var(--cream) 18%, transparent);
  padding-block: var(--space-4);
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links a {
  color: var(--sand);
  text-decoration: none;
  font-size: 0.9rem;
}
.footer-links a:hover { color: var(--gold); }
.footer-meta {
  color: var(--taupe);
  font-size: 0.85rem;
  max-width: 46rem;
  margin-top: var(--space-3);
}

/* Breadcrumbs (sub-pages) */
.breadcrumbs {
  padding-top: var(--space-3);
  font-size: 0.85rem;
  color: var(--taupe);
}
.breadcrumbs a { color: var(--sand); }
.breadcrumbs ol {
  list-style: none;
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}
.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 0.5rem;
  color: var(--taupe);
}

/* Founders */
.founders-lede {
  margin-top: var(--space-2);
  max-width: 50ch;
  color: var(--sand);
  font-size: 1.05rem;
}
.founders-photo-frame {
  max-width: 52rem;
  overflow: hidden;
  border-radius: var(--radius);
}
.founders-photo {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  display: block;
  filter: grayscale(8%) sepia(6%) contrast(1.04);
  transition: transform 400ms var(--ease-out), filter 400ms var(--ease-out);
}
@media (hover: hover) and (pointer: fine) {
  .founders-photo-frame:hover .founders-photo {
    transform: scale(1.02);
    filter: grayscale(0%) sepia(0%) contrast(1.04);
  }
}
.founders-names {
  max-width: 52rem;
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  justify-content: space-between;
}
.founder-name {
  font-size: 1.5rem;
}
.founder-title {
  margin-top: 0.25rem;
  color: var(--sand);
}

/* Legal / policy pages */
.legal-page { padding-block: var(--space-5) var(--space-6); }
.legal-page h1 { font-size: clamp(2rem, 4vw, 2.75rem); margin-bottom: var(--space-2); }
.legal-page .updated { color: var(--taupe); font-size: 0.9rem; margin-bottom: var(--space-5); }
.legal-page h2 {
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
}
.legal-page p, .legal-page li { color: var(--sand); max-width: 68ch; }
.legal-page ul { padding-left: 1.2rem; }
.legal-page li + li { margin-top: 0.5rem; }
.placeholder-flag {
  display: inline-block;
  border: 1px solid color-mix(in srgb, var(--gold) 55%, transparent);
  color: var(--gold);
  border-radius: var(--radius);
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-left: 0.4rem;
  vertical-align: middle;
}

/* 404 */
.error-page {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--ink) 90%, transparent);
}
.error-page h1 { font-size: clamp(2.5rem, 6vw, 4rem); }
.error-page p { color: var(--sand); max-width: 40ch; margin-top: var(--space-2); }

/* Reveal-on-scroll (progressive enhancement; content visible without JS) */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 500ms var(--ease-out), transform 500ms var(--ease-out);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}
.tests-item:nth-child(1) { transition-delay: 0ms; }
.tests-item:nth-child(2) { transition-delay: 90ms; }
.tests-item:nth-child(3) { transition-delay: 180ms; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}
.no-js [data-reveal] { opacity: 1; transform: none; }

@media (max-width: 40rem) {
  .site-nav a:not(.btn) { display: none; }
  .tests-item { grid-template-columns: 1fr; }
  .tests-item:nth-child(2), .tests-item:nth-child(3) { padding-inline-start: 0; }
}