/* Milbird hackathons landing and event previews. Standalone: the deck stylesheet
   locks the viewport for slides; these pages scroll normally. */
:root {
  color-scheme: light;
  --navy: #0b1d3a;
  --deep: #06152a;
  --ink: #192028;
  --copy: #53606c;
  --muted: #7b8791;
  --paper: #ffffff;
  --mist: #f2f4f6;
  --line: #dde2e7;
  --cyan: #00dff5;
  --orange: #ff7138;
  --pale-cyan: #eafcff;
  --pale-orange: #fff0e9;
  --teal: #0a7c8c;
  --rust: #9a3a12;
  --max: 1120px;
  --font-display: 'Montserrat', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--mist);
  color: var(--ink);
  font: 400 17px/1.5 var(--font-body);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--navy);
}

p, ul { margin: 0; }
a { color: inherit; }
[hidden] { display: none !important; }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--orange);
  color: var(--deep);
  font: 800 13px/1 var(--font-display);
  text-decoration: none;
  transform: translateY(-150%);
}
.skip-link:focus { transform: none; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 24px;
  height: 68px;
  padding: 0 clamp(20px, 4vw, 48px);
  background: var(--navy);
  color: #fff;
  box-shadow: 0 8px 30px rgba(6, 21, 42, 0.25);
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.wordmark .mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--cyan), var(--orange));
  color: var(--deep);
  font: 900 19px/1 var(--font-display);
}
.wordmark strong {
  display: block;
  font: 800 17px/1.1 var(--font-display);
  letter-spacing: -0.01em;
}
.wordmark small {
  display: block;
  margin-top: 2px;
  font: 700 10px/1.2 var(--font-display);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.site-nav {
  display: flex;
  gap: 6px;
  margin-left: auto;
}
.site-nav a {
  padding: 8px 12px;
  border-radius: 999px;
  text-decoration: none;
  font: 700 13px/1 var(--font-display);
  color: rgba(255, 255, 255, 0.82);
}
.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  outline: none;
}

.signout {
  font: 600 13px/1 var(--font-body);
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  white-space: nowrap;
}
.signout:hover, .signout:focus-visible { color: #fff; }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(64px, 10vw, 120px) clamp(20px, 4vw, 48px) clamp(56px, 8vw, 96px);
  background:
    radial-gradient(circle at 85% 15%, rgba(0, 223, 245, 0.22), transparent 38%),
    radial-gradient(circle at 10% 90%, rgba(255, 113, 56, 0.2), transparent 40%),
    linear-gradient(135deg, var(--deep), var(--navy) 55%, #102d4e);
  color: #fff;
}
.hero::before {
  content: '';
  position: absolute;
  top: -260px;
  right: -180px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  border: 1px solid rgba(0, 223, 245, 0.25);
  box-shadow: 0 0 0 90px rgba(0, 223, 245, 0.04), 0 0 0 180px rgba(255, 113, 56, 0.03);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
}

.kicker {
  margin-bottom: 14px;
  font: 900 12px/1 var(--font-display);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}
.hero .kicker, .on-dark .kicker { color: var(--cyan); }

.hero h1 {
  max-width: 15ch;
  font-size: clamp(40px, 6vw, 76px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.05em;
  color: #fff;
  text-wrap: balance;
}
.hero h1 em, .section h2 em {
  font-style: normal;
  color: var(--orange);
}
.hero .lede {
  max-width: 60ch;
  margin-top: 24px;
  font-size: clamp(17px, 1.6vw, 21px);
  color: rgba(255, 255, 255, 0.78);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.hero-status {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  margin-top: 36px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(0, 223, 245, 0.35);
  background: rgba(255, 255, 255, 0.08);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}
.hero-status strong {
  font: 900 11px/1 var(--font-display);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 20px;
  border: 2px solid transparent;
  border-radius: 999px;
  font: 800 14px/1 var(--font-display);
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.button.primary {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--deep);
}
.button.primary:hover, .button.primary:focus-visible {
  background: #ff8a5a;
  border-color: #ff8a5a;
  transform: translateY(-1px);
}
.button.ghost {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}
.button.ghost:hover, .button.ghost:focus-visible {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}
.on-light .button.ghost {
  border-color: var(--navy);
  color: var(--navy);
}
.on-light .button.ghost:hover, .on-light .button.ghost:focus-visible {
  background: var(--navy);
  color: #fff;
}
.button:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

/* Sections */
.section { padding: clamp(56px, 8vw, 96px) clamp(20px, 4vw, 48px); }
.section-inner { max-width: var(--max); margin: 0 auto; }
.section h2 {
  max-width: 22ch;
  font-size: clamp(28px, 3.6vw, 46px);
  font-weight: 900;
  letter-spacing: -0.04em;
  text-wrap: balance;
}
.section-lede {
  max-width: 62ch;
  margin-top: 16px;
  font-size: 18px;
  color: var(--copy);
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
}
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards article {
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--cyan);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: 0 12px 30px rgba(6, 21, 42, 0.06);
}
.cards article:nth-child(even) { border-top-color: var(--orange); }
.cards article > span {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  font: 900 11px/1 var(--font-display);
}
.cards h3 {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.cards p {
  margin-top: 10px;
  font-size: 15px;
  color: var(--copy);
}

/* Events */
.section-events {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.events {
  display: grid;
  gap: 18px;
  margin-top: 36px;
}
.event {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 28px;
  padding: 28px;
  border: 1px solid var(--line);
  border-left: 6px solid var(--cyan);
  border-radius: 16px;
  background: var(--mist);
}
.event + .event { border-left-color: var(--orange); }
.event-date time {
  display: block;
  font: 900 clamp(22px, 2.4vw, 28px)/1.1 var(--font-display);
  letter-spacing: -0.03em;
  color: var(--navy);
}
.event-date span {
  display: block;
  margin-top: 8px;
  font: 700 13px/1.35 var(--font-display);
  color: var(--copy);
}
.event-status {
  display: inline-block;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--pale-orange);
  color: var(--rust);
  font: 800 11px/1 var(--font-display);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.event h3 {
  margin-top: 12px;
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 800;
}
.event-body > p:not(.event-status) {
  margin-top: 10px;
  color: var(--copy);
}
.event .button { margin-top: 18px; }

/* Two-up panels */
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.split article {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper);
}
.split article.on-dark {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}
.split article.on-dark h2 { color: #fff; }
.split article.on-dark p { color: rgba(255, 255, 255, 0.78); }
.split h2 { font-size: clamp(22px, 2.6vw, 30px); max-width: none; }
.split p {
  margin-top: 12px;
  font-size: 16px;
  color: var(--copy);
}
.split ul {
  margin-top: 12px;
  padding-left: 18px;
  font-size: 16px;
  color: var(--copy);
}
.split li + li { margin-top: 6px; }

/* Access */
.section-access .section-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 40px;
  align-items: start;
}
.access-steps {
  display: grid;
  gap: 12px;
  padding: 0;
  list-style: none;
  counter-reset: step;
}
.access-steps li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
  font-size: 15px;
  color: var(--ink);
}
.access-steps li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font: 900 12px/24px var(--font-display);
  color: var(--orange);
}
.access-note {
  margin-top: 18px;
  padding: 16px 18px;
  border-left: 4px solid var(--orange);
  border-radius: 10px;
  background: var(--pale-orange);
  font-size: 15px;
  color: var(--ink);
}

/* Footer */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  padding: 28px clamp(20px, 4vw, 48px);
  background: var(--navy);
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
}
.site-footer a { color: #fff; }

@media (max-width: 960px) {
  .cards, .cards.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .site-header { height: 60px; gap: 16px; }
  .site-nav a.anchor { display: none; }
  .event { grid-template-columns: 1fr; gap: 14px; padding: 22px; }
  .cards, .cards.three, .split, .section-access .section-inner { grid-template-columns: 1fr; }
  .section-access .section-inner { gap: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}