:root{--color-primary: #2563eb;--color-secondary: #64748b;--color-header-bg: #1e293b;--color-sidebar-bg: #0f172a;--color-bg: #f5f5f5}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--color-bg)}.loading-spinner{width:40px;height:40px;border:3px solid #e2e8f0;border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.fc .fc-toolbar-title{font-size:17px!important;font-weight:600}.fc .fc-button-primary{background:var(--color-primary)!important;border-color:var(--color-primary)!important}.fc .fc-event{border-radius:4px;font-size:12px}.fc .fc-today-button{background:#f8fafc!important;color:#1e293b!important;border-color:#e2e8f0!important}