:root {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-raised: #1e222b;
  --border: #2a2f3a;
  --text: #eef1f6;
  --text-dim: #9aa3b2;
  --accent: #6ea8fe;
  --concerts: #6ea8fe;
  --comedy: #ffb347;
  --theater: #c792ea;
  --other: #6ee7b7;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(15, 17, 21, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px 20px 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.topbar-inner h1 {
  font-size: 22px;
  margin: 0;
  font-weight: 700;
}

.topbar-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.updated-label {
  font-size: 13px;
  color: var(--text-dim);
}

.refresh-btn {
  background: var(--surface-raised);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s ease, transform 0.1s ease;
}

.refresh-btn:hover {
  background: #262b36;
}

.refresh-btn:active {
  transform: scale(0.97);
}

.refresh-btn.spinning .refresh-icon {
  display: inline-block;
  animation: spin 0.8s linear infinite;
}

.refresh-btn:disabled {
  opacity: 0.6;
  cursor: default;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.tabs {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4px 20px 12px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.tab {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.tab:hover {
  color: var(--text);
}

.tab.active {
  background: var(--accent);
  color: #0b1220;
  border-color: var(--accent);
  font-weight: 600;
}

.content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
  min-height: 50vh;
}

.day-group {
  margin-bottom: 28px;
}

.day-heading {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dim);
  margin: 0 0 10px 0;
  padding-inline-start: 2px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.day-heading .day-heading-date {
  font-weight: 400;
  font-size: 13px;
  color: var(--text-dim);
  opacity: 0.75;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.12s ease, border-color 0.12s ease;
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 4px;
  height: 100%;
  background: var(--cat-color, var(--accent));
}

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

.card-time {
  font-size: 13px;
  font-weight: 700;
  color: var(--cat-color, var(--accent));
}

.card-source {
  font-size: 11px;
  color: var(--text-dim);
  background: var(--surface-raised);
  border-radius: 999px;
  padding: 2px 9px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.3;
  margin: 2px 0 0;
}

.card-venue {
  font-size: 13px;
  color: var(--text-dim);
}

.empty-state {
  text-align: center;
  color: var(--text-dim);
  padding: 60px 20px;
  font-size: 15px;
}

.source-errors {
  font-size: 12px;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 16px;
}

.footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
  text-align: center;
  color: var(--text-dim);
  font-size: 12px;
}

@media (max-width: 480px) {
  .topbar-inner h1 {
    font-size: 19px;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
}