:root {
  /* Latar belakang cerah dan modern */
  --bg-gradient: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 50%, #ffffff 100%);
  --bg-card: rgba(255, 255, 255, 0.92);
  --text-main: #0f172a;
  --text-muted: #475569;
  --primary-blue: #2563eb;
  --primary-cyan: #0284c7;
  --accent-orange: #ea580c;
  --accent-green: #16a34a;
  --accent-red: #dc2626;
  --accent-purple: #9333ea;
  --border-color: rgba(203, 213, 225, 0.8);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 25px -5px rgba(14, 165, 233, 0.15);
}

[data-bs-theme="dark"] {
  /* Dark mode opsional tetap nyaman di mata */
  --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --bg-card: rgba(30, 41, 59, 0.85);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: rgba(51, 65, 85, 0.6);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
}

body {
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
}

/* Glassmorphism Card Cerah */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.glass-card:hover {
  transform: translateY(-2px);
}

/* Header & Banner */
.brand-header {
  background: linear-gradient(90deg, #0284c7, #2563eb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

/* Timeline Customization */
.timeline {
  position: relative;
  padding-left: 2rem;
  border-left: 3px solid var(--primary-cyan);
}
.timeline-item {
  position: relative;
  margin-bottom: 1.5rem;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.6rem;
  top: 0.25rem;
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 50%;
  background: var(--primary-blue);
  border: 3px solid #ffffff;
}

/* Fix Tinggi & Kontainer FullCalendar */
#full-calendar {
  min-height: 650px;
  width: 100%;
}