* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.4;
  color: #333;
  background: #f5f5f5;
  padding: 0.75rem;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  background: white;
  border-radius: 6px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  padding: 1rem 1.25rem;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

h1 {
  color: #2c3e50;
  font-size: 1.5rem;
  font-weight: 600;
}

.schedule-info {
  color: #7f8c8d;
  font-size: 0.85rem;
}

.schedule-info strong { 
  color: #2c3e50; 
}

.description {
  background: #e8f4f8;
  padding: 0.75rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  color: #2c3e50;
  line-height: 1.5;
}

.description a {
  color: #3498db;
  text-decoration: underline;
}

.groups {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 2rem;
  color: #7f8c8d;
}

.group-card {
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 0.6rem 0.75rem;
  background: #fafafa;
  display: flex;
  flex-direction: column;
}

.group-card.has-current {
  border-color: #e74c3c;
  background: #fff5f5;
}

.group-card.has-current .group-title {
  color: #e74c3c;
}

.group-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 0.5rem;
}

.intervals {
  font-size: 0.75rem;
  color: #555;
  margin-bottom: 0.5rem;
  line-height: 1.5;
  flex-grow: 1;
}

.interval-item {
  margin-bottom: 0.25rem;
}

.interval-item.past {
  color: #999;
  opacity: 0.6;
}

.interval-item.current {
  font-weight: bold;
  color: #2c3e50;
}

.group-links {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: auto;
}

.group-links .link {
  width: 100%;
}

.link.copy-link {
  background: #27ae60;
  font-size: 0.75rem;
}

.link.copy-link:hover {
  background: #229954;
}

.link.copy-link.copied {
  background: #27ae60;
}

.link.copy-link.copied:hover {
  background: #229954;
}

.link {
  display: inline-block;
  padding: 0.35rem 0.6rem;
  background: #3498db;
  color: white;
  text-decoration: none;
  border-radius: 3px;
  font-size: 0.8rem;
  transition: background 0.15s;
  text-align: center;
}

.link:hover { 
  background: #2980b9; 
}

.link.ics { 
  background: #27ae60; 
}

.link.ics:hover { 
  background: #229954; 
}

footer {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid #ddd;
  text-align: center;
  color: #7f8c8d;
  font-size: 0.8rem;
}

footer a {
  color: #3498db;
  text-decoration: none;
}

footer a:hover { 
  text-decoration: underline; 
}