/* Swiss Blockchain Hackathon Styles */

:root {
  color-scheme: dark;
  --fg: #f5f7ff;
  --fg-strong: #ffffff;
  --muted: rgba(245, 247, 255, 0.74);
  --accent: #64ffda;
  --accent-soft: rgba(100, 255, 218, 0.14);
  --accent-2: #ff8a65;
  --accent-2-soft: rgba(255, 138, 101, 0.16);
  --card: rgba(10, 20, 45, 0.58);
  --card-border: rgba(100, 255, 218, 0.18);
  --shadow: 0 28px 60px rgba(4, 12, 34, 0.55);
  --section-bg: rgba(1, 9, 32, 0.66);
  --blur: 14px;
  --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --cursor-x: 0.5;
  --cursor-y: 0.35;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  color: var(--fg);
  line-height: 1.6;
  background: radial-gradient(circle at 20% 20%, rgba(100, 255, 218, 0.14), transparent 58%),
    radial-gradient(circle at 80% 0%, rgba(88, 191, 255, 0.18), transparent 60%),
    linear-gradient(135deg, #030720 0%, #050a30 35%, #021020 70%, #070018 100%);
  background-size: 180% 180%, 140% 140%, 100% 100%;
  animation: gradientShift 18s ease-in-out infinite alternate;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(550px circle at calc(var(--cursor-x) * 100%) calc(var(--cursor-y) * 100%), rgba(100, 255, 218, 0.22), transparent 60%),
    radial-gradient(900px circle at 12% 15%, rgba(135, 154, 255, 0.35), transparent 70%),
    radial-gradient(900px circle at 88% 12%, rgba(255, 138, 101, 0.35), transparent 74%);
  mix-blend-mode: screen;
  transition: background-position var(--transition);
  z-index: -1;
}

body::after {
  content: "";
  position: fixed;
  inset: -120px;
  pointer-events: none;
  background-image: radial-gradient(1px 1px at 20px 20px, rgba(255, 255, 255, 0.4) 0, rgba(255, 255, 255, 0) 60%);
  background-size: 120px 120px;
  opacity: 0.22;
  animation: twinkle 9s linear infinite;
  z-index: -2;
}

main,
header,
footer {
  position: relative;
  z-index: 1;
}

a {
  color: var(--accent);
  transition: color var(--transition), text-shadow var(--transition);
}

a:hover,
a:focus-visible {
  color: var(--fg-strong);
  text-shadow: 0 0 12px rgba(100, 255, 218, 0.6);
}

header {
  position: relative;
  min-height: 82vh;
  display: grid;
  place-items: center;
  padding: 4.5rem 2rem 6rem;
  text-align: center;
  overflow: hidden;
}

header::before {
  content: "";
  position: absolute;
  inset: -30% -10%;
  background: conic-gradient(from 120deg at 50% 50%, rgba(100, 255, 218, 0.05), rgba(255, 138, 101, 0.12), rgba(88, 191, 255, 0.08), rgba(100, 255, 218, 0.05));
  filter: blur(80px);
  opacity: 0.9;
  animation: aurora 22s ease-in-out infinite alternate;
  pointer-events: none;
}

header::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
      120deg,
      rgba(100, 255, 218, 0.12) 0,
      rgba(100, 255, 218, 0.12) 2px,
      transparent 2px,
      transparent 14px
    ),
    linear-gradient(180deg, rgba(2, 16, 32, 0.2) 0%, rgba(2, 16, 32, 0.75) 85%);
  mix-blend-mode: screen;
  opacity: 0.55;
  pointer-events: none;
}

.container {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

.hero {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.5rem;
  align-items: center;
  justify-items: center;
}

.hero span.tag {
  font-family: "Space Mono", monospace;
  letter-spacing: 0.18rem;
  text-transform: uppercase;
  font-size: 0.85rem;
  color: var(--muted);
}

.hero h1 {
  font-size: clamp(2.9rem, 6vw, 4.75rem);
  margin: 0;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-shadow: 0 16px 42px rgba(0, 0, 0, 0.45);
}

.hero p.lede {
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  margin: 0;
  color: var(--muted);
  max-width: 700px;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.btn,
.hero-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  padding: 0.9rem 2.8rem;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: transform var(--transition), box-shadow var(--transition),
    background var(--transition), color var(--transition);
}

.btn-primary,
.hero-cta .btn-primary {
  background: linear-gradient(120deg, var(--accent) 0%, #7ffff1 100%);
  color: #021020;
  box-shadow: var(--shadow);
}

.btn-secondary,
.hero-cta .btn-secondary {
  border: 2px solid var(--accent);
  color: var(--fg-strong);
  background: rgba(2, 16, 32, 0.45);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 26px 66px rgba(100, 255, 218, 0.45);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  transform: translateY(-3px);
  background: rgba(6, 20, 48, 0.8);
  box-shadow: 0 16px 36px rgba(100, 255, 218, 0.3);
}

.btn-accent {
  padding: 0.9rem 1.8rem;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent-2) 0%, #ffb199 100%);
  color: #021020;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  box-shadow: 0 18px 35px rgba(255, 138, 101, 0.35);
}

.btn-accent:hover,
.btn-accent:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 26px 60px rgba(255, 138, 101, 0.45);
}

.quote {
  font-family: "Space Mono", monospace;
  font-size: 1.1rem;
  color: var(--accent);
  text-align: center;
  margin: 3rem auto 0;
  opacity: 0.82;
}

.section {
  padding: 5rem 2rem;
}

.section:nth-of-type(even) {
  background: rgba(1, 9, 32, 0.62);
  backdrop-filter: blur(calc(var(--blur) / 1.5));
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid-gap-lg {
  gap: 3rem;
}

.grid-gap-md {
  gap: 1.5rem;
}

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

.align-self-start {
  align-self: flex-start;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 22px;
  padding: 2.4rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(var(--blur));
  transition: transform var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

.card:hover,
.card:focus-within {
  transform: translateY(-6px);
  border-color: rgba(100, 255, 218, 0.4);
  box-shadow: 0 32px 66px rgba(5, 18, 58, 0.45);
}

.card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.35rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.card-form {
  max-width: 420px;
}

.program-item {
  display: grid;
  gap: 0.55rem;
  padding: 1.6rem 1.6rem 1.6rem 1.9rem;
  border-left: 3px solid var(--accent);
  background: rgba(4, 13, 38, 0.78);
  border-radius: 18px;
  box-shadow: 0 24px 50px rgba(3, 12, 32, 0.35);
}

.program-item strong {
  font-size: 1.1rem;
}

ul.requirements {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.1rem;
}

ul.requirements li {
  padding: 1.4rem 1.6rem;
  background: rgba(4, 13, 38, 0.78);
  border-radius: 18px;
  border-left: 4px solid var(--accent-2);
  box-shadow: 0 20px 42px rgba(2, 10, 28, 0.4);
  font-weight: 500;
}

.prize-link {
  display: inline-flex;
  gap: 0.45rem;
  align-items: center;
  margin-top: 0.8rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.prize-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  transition: transform var(--transition);
}

.prize-link:hover svg,
.prize-link:focus-visible svg {
  transform: translateX(4px);
}

.mb-lg {
  margin-bottom: 1.5rem;
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.field-label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(245, 247, 255, 0.8);
}

.input-control {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid rgba(100, 255, 218, 0.18);
  background: rgba(3, 12, 38, 0.85);
  color: var(--fg);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.input-control:focus {
  outline: none;
  border-color: rgba(100, 255, 218, 0.55);
  box-shadow: 0 0 0 4px rgba(100, 255, 218, 0.2);
}

.note {
  color: var(--muted);
}

.section[data-reveal] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.section[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.footer {
  text-align: center;
  padding: 3rem 2rem 4rem;
  background: rgba(0, 0, 0, 0.38);
  font-size: 0.95rem;
  backdrop-filter: blur(calc(var(--blur) / 1.8));
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

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

@media (max-width: 820px) {
  header {
    padding-top: 3.5rem;
    min-height: 68vh;
  }

  .hero h1 {
    font-size: clamp(2.6rem, 10vw, 3.8rem);
  }

  .hero-cta {
    flex-direction: column;
  }

  .card {
    padding: 2rem;
  }

  .section {
    padding: 4rem 1.75rem;
  }
}

@media (max-width: 520px) {
  body {
    --cursor-x: 0.5;
    --cursor-y: 0.4;
  }

  .hero span.tag {
    letter-spacing: 0.12rem;
  }

  .btn,
  .hero-cta a {
    width: 100%;
  }
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%, 60% 50%, 0% 0%;
  }
  50% {
    background-position: 50% 100%, 40% 20%, 50% 50%;
  }
  100% {
    background-position: 100% 50%, 20% 80%, 100% 100%;
  }
}

@keyframes twinkle {
  0% {
    opacity: 0.18;
    transform: translateY(0);
  }
  50% {
    opacity: 0.32;
    transform: translateY(-12px);
  }
  100% {
    opacity: 0.18;
    transform: translateY(0);
  }
}

@keyframes aurora {
  0% {
    transform: rotate(0deg) scale(1);
  }
  100% {
    transform: rotate(360deg) scale(1.05);
  }
}