:root {
  --bg: #0b1020;
  --panel: rgba(255, 255, 255, 0.06);
  --panel2: rgba(255, 255, 255, 0.09);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --border: rgba(255, 255, 255, 0.12);
  --accent: #7c5cff;
  --danger: #ff4d4d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 20% 0%, rgba(124, 92, 255, 0.25), transparent 60%),
    radial-gradient(900px 500px at 90% 20%, rgba(0, 180, 255, 0.18), transparent 55%),
    var(--bg);
  color: var(--text);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(11, 16, 32, 0.7);
  border-bottom: 1px solid var(--border);
  padding: 14px 16px;
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.brand h1 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0.2px;
}

.subtitle {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 13px;
}

.btn:hover { background: var(--panel2); }

.btn-secondary { background: transparent; }

.btn-danger {
  border-color: rgba(255, 77, 77, 0.35);
}

.btn-danger:hover {
  background: rgba(255, 77, 77, 0.12);
}

.container {
  padding: 16px;
  max-width: 1100px;
  margin: 0 auto;
}

#calendar {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 10px;
}

.help {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.footer {
  padding: 20px 16px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
}

/* FullCalendar tweaks */
.fc {
  --fc-page-bg-color: transparent;
  --fc-neutral-bg-color: rgba(255, 255, 255, 0.06);
  --fc-border-color: rgba(255, 255, 255, 0.12);
  --fc-today-bg-color: rgba(124, 92, 255, 0.18);
  --fc-button-bg-color: rgba(255, 255, 255, 0.06);
  --fc-button-border-color: rgba(255, 255, 255, 0.12);
  --fc-button-hover-bg-color: rgba(255, 255, 255, 0.12);
  --fc-button-text-color: rgba(255, 255, 255, 0.92);
}

.fc .fc-toolbar-title {
  font-size: 16px;
}

.fc a { color: var(--text); }