:root {
  --bg: #F6F2E8;
  --green: #6FAE5A;
  --deep-green: #2F4B35;
  --sky: #78C8D8;
  --gray: #7E8285;
  --brown: #9D6D49;
  --yellow: #E0B84A;
  --orange: #D96F5F;
  --pink: #D293DE;

  --white: #F9F8F5;
  --black: #2D2D2D;
  --attention: #F2B84B;
  --warning: #D94F3D;

  --mint: #79D8B5;
  --future-pink: #F05AA8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--black);
  background:
    radial-gradient(circle at 12% 15%, #ffffff 0 7%, transparent 8%),
    radial-gradient(circle at 85% 18%, #d293de55 0 7%, transparent 8%),
    radial-gradient(circle at 20% 90%, #78c8d855 0 8%, transparent 9%),
    var(--bg);
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 40px;
  background: var(--deep-green);
  color: var(--white);
  border-bottom: 6px solid var(--yellow);
}

.logo {
  font-weight: 900;
  font-size: 22px;
}

nav a {
  margin-left: 20px;
  color: var(--white);
  text-decoration: none;
  font-weight: bold;
}

main {
  width: min(1040px, 92%);
  margin: 0 auto;
  padding: 56px 0;
}

.hero {
  padding: 56px;
  background: var(--white);
  border: 4px solid var(--deep-green);
  border-radius: 32px;
  box-shadow: 12px 12px 0 var(--green);
}

.label {
  display: inline-block;
  margin: 0 0 16px;
  padding: 8px 16px;
  background: var(--mint);
  border-radius: 999px;
  font-weight: bold;
  font-size: 13px;
}

h1 {
  margin: 0;
  font-size: clamp(48px, 9vw, 96px);
  line-height: 0.95;
  color: var(--deep-green);
}

.subtitle {
  font-size: 22px;
  font-weight: bold;
  color: var(--brown);
}

.info-box {
  margin: 32px 0;
  padding: 24px;
  background: #fff7df;
  border: 3px solid var(--yellow);
  border-radius: 24px;
}

.info-box p {
  margin: 8px 0;
}

.button {
  display: inline-block;
  padding: 16px 28px;
  background: var(--orange);
  color: var(--white);
  border-radius: 999px;
  text-decoration: none;
  font-weight: bold;
  box-shadow: 0 6px 0 var(--brown);
}

.page-title {
  margin-bottom: 40px;
}

.page-title h1 {
  color: var(--deep-green);
}

.page-title p {
  font-size: 18px;
}

.event-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.event-card {
  padding: 28px;
  background: var(--white);
  border: 3px solid var(--deep-green);
  border-radius: 28px;
  box-shadow: 8px 8px 0 var(--green);
}

.event-card:nth-child(2n) {
  box-shadow: 8px 8px 0 var(--sky);
}

.event-card:nth-child(3n) {
  box-shadow: 8px 8px 0 var(--pink);
}

.event-card:nth-child(4n) {
  box-shadow: 8px 8px 0 var(--yellow);
}

.event-card h2 {
  margin: 18px 0 12px;
  color: var(--deep-green);
}

.description {
  line-height: 1.8;
}

.event-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}

.tag {
  padding: 6px 12px;
  background: var(--yellow);
  border-radius: 999px;
  font-size: 12px;
  font-weight: bold;
}

.status {
  padding: 6px 12px;
  background: var(--attention);
  border-radius: 999px;
  font-size: 12px;
  font-weight: bold;
}

.status.closed {
  background: var(--warning);
  color: var(--white);
}

@media (max-width: 700px) {
  .site-header {
    display: block;
    padding: 20px;
  }

  nav {
    margin-top: 12px;
  }

  nav a {
    margin-left: 0;
    margin-right: 12px;
  }

  .hero {
    padding: 32px;
  }
}