@font-face {
  font-family: "FAC Space";
  src: url("FAC_Branding/Fonts/Space_Grotesk/SpaceGrotesk-VariableFont_wght.ttf") format("truetype");
  font-display: swap;
}

@font-face {
  font-family: "FAC Mono";
  src: url("FAC_Branding/Fonts/JetBrains_Mono/JetBrainsMono-VariableFont_wght.ttf") format("truetype");
  font-display: swap;
}

@font-face {
  font-family: "FAC Pixel";
  src: url("FAC_Branding/Fonts/Press_Start_2P/PressStart2P-Regular.ttf") format("truetype");
  font-display: swap;
}

:root {
  --ink: #080d1e;
  --ink-2: #11172f;
  --paper: #fffdf0;
  --lime: #baff48;
  --green: #87b52b;
  --red: #ff5a52;
  --sky: #4db7e8;
  --muted: #aeb7c6;
  --line: rgba(255, 253, 240, 0.16);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: "FAC Space", system-ui, sans-serif;
  line-height: 1.55;
}

body.nav-open {
  overflow: hidden;
}

a {
  color: inherit;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px clamp(18px, 4vw, 56px);
  background: linear-gradient(180deg, rgba(8, 13, 30, 0.86), rgba(8, 13, 30, 0));
}

.site-header.is-scrolled,
body.nav-open .site-header {
  background: rgba(8, 13, 30, 0.94);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
  font-family: "FAC Pixel", monospace;
  font-size: 0.78rem;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: var(--muted);
  font-family: "FAC Mono", monospace;
  font-size: 0.78rem;
}

.site-nav a {
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--lime);
}

.nav-toggle {
  display: none;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-height: 86vh;
  padding: 132px clamp(20px, 5vw, 72px) 42px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 13, 30, 0.98) 0%, rgba(8, 13, 30, 0.78) 46%, rgba(8, 13, 30, 0.36) 100%),
    linear-gradient(0deg, rgba(8, 13, 30, 0.92) 0%, rgba(8, 13, 30, 0.08) 34%),
    url("FAC_Branding/fac-kaggle-header-2240x1120.png") right center / cover no-repeat;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  align-self: center;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--lime);
  font-family: "FAC Mono", monospace;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 18px;
  font-family: "FAC Pixel", monospace;
  font-size: clamp(2.15rem, 6vw, 5.3rem);
  line-height: 1.08;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(2rem, 4vw, 4.15rem);
  line-height: 1.05;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.24rem;
}

.hero-subtitle {
  margin-bottom: 12px;
  color: var(--lime);
  font-size: clamp(1.35rem, 3vw, 2.3rem);
  font-weight: 800;
}

.hero-copy {
  max-width: 680px;
  margin-bottom: 28px;
  color: #d9deea;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 2px solid transparent;
  border-radius: 4px;
  font-family: "FAC Mono", monospace;
  font-size: 0.86rem;
  font-weight: 800;
  text-decoration: none;
}

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

.button-secondary {
  border-color: rgba(255, 253, 240, 0.38);
  color: var(--paper);
}

.hero-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  align-self: end;
  width: min(820px, 100%);
  margin-top: 64px;
  background: var(--line);
  border: 1px solid var(--line);
}

.hero-stats div {
  padding: 18px;
  background: rgba(8, 13, 30, 0.72);
}

.hero-stats strong {
  display: block;
  color: var(--paper);
  font-family: "FAC Pixel", monospace;
  font-size: 1.35rem;
}

.hero-stats span {
  color: var(--muted);
  font-family: "FAC Mono", monospace;
  font-size: 0.72rem;
}

.section {
  padding: clamp(64px, 9vw, 116px) clamp(20px, 5vw, 72px);
}

.split {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(280px, 1fr);
  gap: clamp(32px, 8vw, 104px);
  align-items: start;
}

.stack p {
  color: #d6dcea;
  font-size: 1.06rem;
}

.runtime-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding-top: 0;
}

.runtime-card,
.resource-grid article {
  min-height: 250px;
  padding: 28px;
  background: var(--paper);
  color: var(--ink);
  border-radius: 6px;
}

.runtime-card:nth-child(2) {
  background: var(--lime);
}

.runtime-card:nth-child(3) {
  background: var(--sky);
}

.runtime-card img {
  width: 58px;
  height: 58px;
  margin-bottom: 28px;
}

.runtime-card p,
.resource-grid p {
  margin-bottom: 0;
}

.kaggle-band {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(260px, 380px);
  gap: 28px;
  align-items: stretch;
  background: var(--lime);
  color: var(--ink);
}

.kaggle-band .eyebrow {
  color: var(--ink);
}

.kaggle-band p {
  max-width: 780px;
  font-size: 1.08rem;
}

.kaggle-panel {
  padding: 28px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.kaggle-panel span {
  display: block;
  margin-bottom: 12px;
  color: var(--lime);
  font-family: "FAC Mono", monospace;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.kaggle-panel strong {
  display: block;
  margin-bottom: 16px;
  font-family: "FAC Pixel", monospace;
  font-size: 1.42rem;
}

.media-section {
  display: grid;
  grid-template-columns: minmax(280px, 1.15fr) minmax(260px, 0.85fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.video-frame {
  overflow: hidden;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.video-frame video {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.media-section p:not(.section-kicker) {
  color: #d6dcea;
}

.timeline {
  display: grid;
  gap: 12px;
  max-width: 980px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 20px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.timeline time {
  color: var(--lime);
  font-family: "FAC Mono", monospace;
  font-weight: 800;
}

.timeline span {
  color: #d6dcea;
}

.rules {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(280px, 1fr);
  gap: clamp(28px, 7vw, 84px);
  background: var(--paper);
  color: var(--ink);
}

.rules .section-kicker {
  color: var(--green);
}

.rule-list {
  display: grid;
  gap: 12px;
}

.rule-list p {
  margin: 0;
  padding: 16px 18px;
  background: #edf0df;
  border-left: 5px solid var(--lime);
  border-radius: 4px;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.resource-grid article {
  min-height: 210px;
  background: var(--ink-2);
  color: var(--paper);
  border: 1px solid var(--line);
}

.resource-grid p {
  color: var(--muted);
}

.organizers {
  border-top: 1px solid var(--line);
}

.organizers-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(280px, 1fr);
  gap: clamp(28px, 7vw, 84px);
  align-items: start;
  margin-bottom: 34px;
}

.organizers-heading p {
  color: #d6dcea;
  font-size: 1.05rem;
}

.organizer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.organizer-card {
  min-width: 0;
  padding: 16px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.organizer-card > img,
.headshot-placeholder {
  width: 100%;
  aspect-ratio: 1;
  margin-bottom: 16px;
  overflow: hidden;
  background: #050916;
  border-radius: 4px;
}

.organizer-card > img {
  object-fit: cover;
}

.headshot-placeholder {
  display: grid;
  place-items: center;
  border: 1px dashed rgba(186, 255, 72, 0.34);
}

.headshot-placeholder img {
  width: 64%;
  height: 64%;
  object-fit: contain;
}

.organizer-card h3 {
  margin-bottom: 4px;
  font-size: 1rem;
}

.organizer-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-family: "FAC Mono", monospace;
  font-size: 0.72rem;
}

.sponsors {
  padding-top: 0;
}

.sponsor-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(520px, 100%);
  min-height: 140px;
  padding: 34px;
  background: var(--paper);
  border-radius: 6px;
}

.sponsor-panel img {
  width: min(360px, 100%);
  max-height: 72px;
  object-fit: contain;
}

.site-footer {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 32px clamp(20px, 5vw, 72px);
  background: #050916;
  border-top: 1px solid var(--line);
}

.site-footer img {
  width: 62px;
  height: 62px;
}

.site-footer p {
  margin: 4px 0 0;
  color: var(--muted);
}

.site-footer a {
  color: var(--lime);
}

@media (max-width: 920px) {
  .site-nav {
    position: fixed;
    inset: 71px 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 22px;
    background: rgba(8, 13, 30, 0.98);
    border-bottom: 1px solid var(--line);
  }

  body.nav-open .site-nav {
    display: flex;
  }

  .site-nav a {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
    width: 42px;
    height: 42px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: 4px;
  }

  .nav-toggle span {
    width: 18px;
    height: 2px;
    background: var(--paper);
  }

  .nav-toggle span + span {
    margin-top: -12px;
  }

  .hero {
    min-height: 88vh;
  }

  .split,
  .kaggle-band,
  .media-section,
  .rules,
  .organizers-heading {
    grid-template-columns: 1fr;
  }

  .runtime-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .organizer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 14px 18px;
  }

  .brand span {
    max-width: 140px;
  }

  .hero {
    min-height: auto;
    padding-top: 112px;
  }

  .hero-media {
    background:
      linear-gradient(180deg, rgba(8, 13, 30, 0.86) 0%, rgba(8, 13, 30, 0.94) 70%),
      url("FAC_Branding/fac-kaggle-header-compact-2240x1120_alt.png") center top / cover no-repeat;
  }

  h1 {
    font-size: 2.18rem;
  }

  h2 {
    font-size: 2.15rem;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    margin-top: 44px;
  }

  .button {
    width: 100%;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .site-footer {
    align-items: flex-start;
  }

  .organizer-grid {
    grid-template-columns: 1fr;
  }
}