/*
  Versonoir — single-page venture capital site
  Design system: dark editorial, precise typography, and luminous signal accents.
*/

/* -------------------------------------------------------------------------- */
/* Design tokens                                                              */
/* -------------------------------------------------------------------------- */

:root {
  --color-ink: #111415;
  --color-ink-soft: #1d2325;
  --color-canvas: #f4f3ee;
  --color-paper: #fbfaf7;
  --color-mist: #d8d9d2;
  --color-muted: #626965;
  --color-lime: #80b8f0;
  --color-lime-soft: #80b8f0;
  --color-white: #ffffff;
  --border-dark: rgba(255, 255, 255, 0.18);
  --border-light: rgba(17, 20, 21, 0.16);
  --font-display: "Manrope", Arial, sans-serif;
  --font-mono: "DM Mono", monospace;
  --page-width: 76rem;
  --shadow-card: 0 1.25rem 3.5rem rgba(17, 20, 21, 0.08);
}

/* -------------------------------------------------------------------------- */
/* Reset and shared elements                                                  */
/* -------------------------------------------------------------------------- */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 20rem;
  margin: 0;
  overflow-x: hidden;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p {
  margin: 0;
}

button {
  font: inherit;
}

:focus-visible {
  outline: 0.18rem solid var(--color-lime);
  outline-offset: 0.25rem;
}

.container {
  width: min(100% - 3rem, var(--page-width));
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 200;
  padding: 0.65rem 0.9rem;
  transform: translateY(-200%);
  background: var(--color-lime);
  color: var(--color-ink);
  font-weight: 800;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.eyebrow,
.card-kicker,
.card-number {
  color: currentColor;
  font-family: var(--font-mono);
  font-size: 0.69rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.35;
  text-transform: uppercase;
}

.button,
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  font-weight: 800;
  text-decoration: none;
}

.button {
  min-height: 3.4rem;
  padding: 0.85rem 1.25rem;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}

.button:hover {
  transform: translateY(-0.16rem);
}

.text-link {
  position: relative;
  padding-bottom: 0.2rem;
}

.text-link::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  transform-origin: right;
  transition: transform 180ms ease;
}

.text-link:hover::after {
  transform: scaleX(0);
}

/* -------------------------------------------------------------------------- */
/* Header and navigation                                                      */
/* -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244, 243, 238, 0.88);
  border-bottom: 1px solid var(--border-light);
  backdrop-filter: blur(1rem);
  -webkit-backdrop-filter: blur(1rem);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-inner {
  min-height: 4.7rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 1.45rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 0.85rem;
  font-weight: 400;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list a {
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-decoration: none;
  transition: color 180ms ease;
}

.nav-list a:hover {
  color: var(--color-ink);
}

.nav-list .nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-ink);
}

.menu-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.8rem;
  background: transparent;
  border: 1px solid var(--border-light);
  cursor: pointer;
}

.menu-toggle > span:not(.sr-only) {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--color-ink);
  transition: transform 180ms ease;
}

.menu-toggle > span:not(.sr-only) + span:not(.sr-only) {
  margin-top: 0.35rem;
}

.menu-toggle.is-open > span:nth-child(2) {
  transform: translateY(0.19rem) rotate(45deg);
}

.menu-toggle.is-open > span:nth-child(3) {
  transform: translateY(-0.19rem) rotate(-45deg);
}

/* -------------------------------------------------------------------------- */
/* Hero                                                                        */
/* -------------------------------------------------------------------------- */

.hero {
  position: relative;
  overflow: hidden;
  background: var(--color-ink);
  color: var(--color-paper);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(19rem, 0.94fr);
  min-height: min(47rem, calc(100vh - 4.7rem));
}

.hero-copy {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding-block: 7rem;
}

.hero-copy .eyebrow {
  color: var(--color-lime);
}

.hero h1 {
  max-width: 47rem;
  margin-top: 1.35rem;
  font-size: clamp(3.1rem, 6.1vw, 6.5rem);
  font-weight: 400;
  letter-spacing: -0.075em;
  line-height: 0.99;
}

.hero-intro {
  max-width: 35rem;
  margin-top: 2rem;
  color: #b9bfbc;
  font-size: clamp(1rem, 1.35vw, 1.2rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.65rem;
  margin-top: 2.4rem;
}

.button-primary {
  background: var(--color-lime);
  color: var(--color-ink);
}

.button-primary:hover {
  background: var(--color-lime-soft);
}

.hero .text-link {
  color: var(--color-paper);
}

.hero-art {
  position: relative;
  align-self: stretch;
  min-height: 28rem;
  overflow: hidden;
  border-left: 1px solid var(--border-dark);
}

.core,
.orbit {
  position: absolute;
  top: 50%;
  left: 54%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.core {
  width: clamp(7rem, 11vw, 10.5rem);
  aspect-ratio: 1;
  background: var(--color-lime);
  box-shadow: 0 0 0 1.7rem rgba(217, 255, 69, 0.06), 0 0 8rem rgba(217, 255, 69, 0.18);
}

.orbit {
  border: 1px solid rgba(217, 255, 69, 0.48);
}

.orbit-one {
  width: clamp(20rem, 34vw, 33rem);
  aspect-ratio: 1;
}

.orbit-two {
  width: clamp(30rem, 46vw, 44rem);
  aspect-ratio: 1;
  border-color: rgba(255, 255, 255, 0.21);
}

.hero-art-label {
  position: absolute;
  right: 1.6rem;
  bottom: 1.6rem;
  color: var(--color-lime);
  font-family: var(--font-mono);
  font-size: 0.69rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

/* -------------------------------------------------------------------------- */
/* Site sections                                                              */
/* -------------------------------------------------------------------------- */

.stats-section {
  background: var(--color-lime);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.32rem;
  min-height: 7.8rem;
  padding: 1.65rem 1.4rem;
  border-right: 1px solid rgba(17, 20, 21, 0.18);
}

.stat-item:first-child {
  border-left: 1px solid rgba(17, 20, 21, 0.18);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.04em;
}

.stat-label {
  max-width: 14rem;
  font-size: 0.79rem;
  font-weight: 700;
  line-height: 1.35;
}

.section {
  padding-block: clamp(5rem, 9vw, 8rem);
}

.section-heading {
  display: grid;
  gap: 2rem;
}

.section-heading h2,
.team-copy h2,
.contact-card h2 {
  font-size: clamp(2.25rem, 4.1vw, 4.35rem);
  font-weight: 600;
  letter-spacing: -0.065em;
  line-height: 1.04;
}

.split-heading {
  grid-template-columns: minmax(9rem, 0.7fr) minmax(0, 1.4fr);
  padding-bottom: clamp(3.2rem, 7vw, 6rem);
}

.split-heading > .eyebrow,
.portfolio-heading .eyebrow,
.team-copy .eyebrow {
  color: var(--color-muted);
}

.split-heading p:not(.eyebrow) {
  max-width: 39rem;
  margin-top: 1.5rem;
  color: var(--color-muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-light);
}

.focus-card {
  min-height: 19.5rem;
  padding: 1.75rem 1.6rem 1.6rem;
  border-right: 1px solid var(--border-light);
  transition: background-color 180ms ease;
}

.focus-card:first-child {
  border-left: 1px solid var(--border-light);
}

.focus-card:hover {
  background: var(--color-paper);
}

.card-number {
  color: var(--color-muted);
}

.focus-card h3 {
  max-width: 12rem;
  margin-top: 5.3rem;
  font-size: 1.45rem;
  letter-spacing: -0.045em;
  line-height: 1.12;
}

.focus-card p {
  max-width: 17rem;
  margin-top: 1rem;
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.portfolio-section {
  background: var(--color-ink-soft);
  color: var(--color-paper);
}

.portfolio-heading {
  grid-template-columns: minmax(0, 1.1fr) minmax(15rem, 0.62fr);
  align-items: end;
  margin-bottom: 3.5rem;
}

.portfolio-heading p:not(.eyebrow) {
  max-width: 25rem;
  color: #b9bfbc;
  font-size: 1rem;
  line-height: 1.65;
}

.thesis-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr;
  gap: 1px;
  background: var(--border-dark);
  border: 1px solid var(--border-dark);
}

.thesis-card {
  display: flex;
  min-height: 21rem;
  flex-direction: column;
  padding: 1.55rem;
  background: var(--color-ink-soft);
  transition: background-color 180ms ease;
}

.thesis-card:hover {
  background: #272e30;
}

.thesis-card-large {
  background: var(--color-lime);
  color: var(--color-ink);
}

.thesis-card-large:hover {
  background: var(--color-lime-soft);
}

.thesis-icon {
  font-family: Georgia, serif;
  font-size: 2.1rem;
  line-height: 1;
}

.card-kicker {
  margin-top: auto;
  color: #b9bfbc;
}

.thesis-card-large .card-kicker {
  color: var(--color-ink-soft);
}

.thesis-card h3 {
  margin-top: 0.5rem;
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.15;
}

.team-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(15rem, 0.58fr);
  gap: 5rem;
}

.team-copy h2 {
  max-width: 45rem;
  margin-top: 1.3rem;
}

.team-note {
  align-self: end;
}

.team-note p {
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.team-note .text-link {
  margin-top: 1.8rem;
}

.contact-section {
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.contact-card {
  padding: clamp(2.1rem, 6vw, 5.4rem);
  background: var(--color-ink);
  color: var(--color-paper);
}

.contact-card .eyebrow {
  color: var(--color-lime);
}

.contact-card h2 {
  max-width: 47rem;
  margin-top: 1.35rem;
}

.contact-card > p:not(.eyebrow) {
  max-width: 37rem;
  margin-top: 1.45rem;
  color: #b9bfbc;
  font-size: 1.05rem;
  line-height: 1.65;
}

.button-light {
  margin-top: 2.15rem;
  background: var(--color-paper);
  color: var(--color-ink);
}

.button-light:hover {
  background: var(--color-lime);
}

/* -------------------------------------------------------------------------- */
/* Footer                                                                      */
/* -------------------------------------------------------------------------- */

.site-footer {
  padding-block: 1.8rem;
  border-top: 1px solid var(--border-light);
}

.site-footer p,
.back-to-top {
  color: var(--color-muted);
  font-size: 0.72rem;
  font-weight: 700;
  text-decoration: none;
}

.back-to-top:hover {
  color: var(--color-ink);
}

/* -------------------------------------------------------------------------- */
/* Responsive layout                                                          */
/* -------------------------------------------------------------------------- */

@media (max-width: 760px) {
  .container {
    width: min(100% - 2rem, var(--page-width));
  }

  .header-inner {
    min-height: 4.2rem;
  }

  .menu-toggle {
    display: block;
  }

  .primary-nav {
    position: static;
  }

  .nav-list {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    background: var(--color-canvas);
    border-bottom: 0 solid var(--border-light);
    transition: max-height 240ms ease, border-width 240ms ease;
  }

  .nav-list.is-open {
    max-height: 18rem;
    border-bottom-width: 1px;
  }

  .nav-list li {
    border-top: 1px solid var(--border-light);
  }

  .nav-list a,
  .nav-list .nav-cta {
    display: flex;
    min-height: 3.5rem;
    align-items: center;
    justify-content: space-between;
    padding-inline: 1rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-copy {
    padding-block: 5.5rem 4rem;
  }

  .hero-art {
    min-height: 19rem;
    border-top: 1px solid var(--border-dark);
    border-left: 0;
  }

  .core,
  .orbit {
    top: 54%;
    left: 50%;
  }

  .stats-grid,
  .focus-grid,
  .thesis-grid,
  .team-layout,
  .portfolio-heading,
  .split-heading {
    grid-template-columns: 1fr;
  }

  .stat-item,
  .stat-item:first-child,
  .focus-card,
  .focus-card:first-child {
    min-height: auto;
    border-right: 0;
    border-left: 0;
  }

  .stat-item + .stat-item,
  .focus-card + .focus-card {
    border-top: 1px solid var(--border-light);
  }

  .stat-item {
    min-height: 5.8rem;
    padding: 1.15rem 0;
  }

  .focus-card {
    padding: 1.55rem 0 1.7rem;
  }

  .focus-card h3 {
    margin-top: 2.7rem;
  }

  .portfolio-heading,
  .team-layout {
    gap: 1.65rem;
  }

  .thesis-card {
    min-height: 16rem;
  }

  .site-footer,
  .footer-inner {
    gap: 1rem;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}