:root {
  --bg: #f3f6f9;
  --card: #ffffff;
  --text: #18202a;
  --muted: #5c6773;
  --brand: #1f7a8c;
  --brand-2: #bfdbf7;
  --danger: #b80f0a;
  --border: #d9e2ec;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, #f3f6f9 0%, #e7eef7 100%);
}

a {
  color: inherit;
}

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
  padding: 24px 0 48px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.title {
  font-family: 'Space Grotesk', sans-serif;
  margin: 0;
}

.nav {
  display: flex;
  gap: 10px;
}

.nav a {
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 10px;
}

.grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 10px 24px rgba(24, 32, 42, 0.06);
}

.filters {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}

input, select, textarea, button {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 10px;
  font: inherit;
}

button {
  background: var(--brand);
  color: #fff;
  cursor: pointer;
}

button.secondary {
  background: #fff;
  color: var(--text);
}

button.danger {
  background: var(--danger);
}

.event-list {
  display: grid;
  gap: 10px;
  max-height: 670px;
  overflow: auto;
}

.event-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  text-decoration: none;
  display: block;
  background: #fff;
}

.event-item:hover {
  border-color: var(--brand);
}

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

.badge {
  display: inline-flex;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 12px;
  background: var(--brand-2);
}

.section-title {
  margin-top: 0;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }

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