Loading overlay CSS

css/style.css

@@ -1211,6 +1211,80 @@ html, body {
 *::-webkit-scrollbar-thumb { background: linear-gradient(180deg, #f59e0b, #dc2626); border-radius: 4px; }
 *::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, #fbbf24, #ef4444); }
 
+/* ----- Loading overlay ----- */
+#loading-overlay {
+  position: fixed;
+  inset: 0;
+  z-index: 9999;
+  background: radial-gradient(ellipse at center, #ffffff 0%, #fff7ed 70%, #fef3c7 100%);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: opacity 0.4s ease;
+}
+.loading-card {
+  background: rgba(255,255,255,0.95);
+  backdrop-filter: blur(10px);
+  border: 1px solid rgba(245,158,11,0.35);
+  border-radius: 20px;
+  padding: 32px 40px;
+  text-align: center;
+  box-shadow: 0 20px 60px rgba(245,158,11,0.18), 0 4px 16px rgba(15,23,42,0.06);
+  max-width: 460px;
+  width: 90%;
+  font-family: 'IBM Plex Sans', 'IBM Plex Sans KR', sans-serif;
+}
+.loading-spinner {
+  width: 56px;
+  height: 56px;
+  margin: 0 auto 18px;
+  border: 4px solid rgba(245,158,11,0.18);
+  border-top-color: #f59e0b;
+  border-right-color: #ef4444;
+  border-radius: 50%;
+  animation: lo-spin 1s linear infinite;
+}
+@keyframes lo-spin { to { transform: rotate(360deg); } }
+.loading-title {
+  font-family: 'IBM Plex Mono', monospace;
+  font-size: 20px;
+  font-weight: 700;
+  background: linear-gradient(135deg, #f59e0b 0%, #ef4444 60%, #db2777 100%);
+  -webkit-background-clip: text;
+  background-clip: text;
+  -webkit-text-fill-color: transparent;
+  margin-bottom: 8px;
+  letter-spacing: 0.5px;
+}
+.loading-status {
+  color: #b45309;
+  font-size: 13px;
+  font-weight: 600;
+  margin-bottom: 14px;
+  font-family: 'IBM Plex Mono', monospace;
+  min-height: 18px;
+}
+.loading-progress {
+  height: 6px;
+  background: rgba(245,158,11,0.15);
+  border-radius: 3px;
+  overflow: hidden;
+  margin-bottom: 14px;
+}
+#loading-bar {
+  height: 100%;
+  width: 0%;
+  background: linear-gradient(90deg, #f59e0b, #ef4444, #db2777);
+  border-radius: 3px;
+  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
+  box-shadow: 0 0 8px rgba(245,158,11,0.5);
+}
+.loading-hint {
+  color: #475569;
+  font-size: 11px;
+  line-height: 1.55;
+}
+
 /* ----- Responsive ----- */
 @media (max-width: 1100px) {
   #mainpanel { width: 260px !important; }