poprawki i optymalizacje kodu

static/css/style.css

@@ -208,4 +208,138 @@ body {
 
 .border-dotted {
     border-style: dotted  !important;
-}
+}
+
+/* Modal własnego zakresu */
+#customRangeModal {
+    display: none;
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background: rgba(0, 0, 0, 0.8);
+    z-index: 1000;
+    justify-content: center;
+    align-items: center;
+}
+
+.modal-content {
+    background: var(--card-bg);
+    padding: 25px;
+    border-radius: 12px;
+    max-width: 420px;
+    width: 90%;
+    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
+    border: 1px solid var(--border-color);
+}
+
+.modal-content h3 {
+    margin-top: 0;
+    color: var(--text-main);
+    margin-bottom: 20px;
+    font-size: 1.25rem;
+    font-weight: 600;
+}
+
+.modal-form-group {
+    margin-bottom: 15px;
+}
+
+.modal-form-group:last-of-type {
+    margin-bottom: 25px;
+}
+
+.modal-label {
+    display: block;
+    color: #8b949e;
+    margin-bottom: 8px;
+    font-size: 0.875rem;
+    font-weight: 500;
+}
+
+.modal-input {
+    width: 100%;
+    padding: 10px;
+    background: var(--bg-dark);
+    border: 1px solid var(--border-color);
+    border-radius: 6px;
+    color: var(--text-main);
+    font-size: 14px;
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
+    box-sizing: border-box;
+}
+
+.modal-input:focus {
+    outline: none;
+    border-color: var(--blue-accent);
+}
+
+.modal-buttons {
+    display: flex;
+    gap: 10px;
+    justify-content: flex-end;
+}
+
+.modal-btn {
+    padding: 8px 20px;
+    border-radius: 6px;
+    cursor: pointer;
+    font-size: 14px;
+    font-weight: 500;
+    transition: all 0.2s;
+    border: none;
+}
+
+.modal-btn-cancel {
+    background: transparent;
+    border: 1px solid var(--border-color);
+    color: var(--text-main);
+}
+
+.modal-btn-cancel:hover {
+    background: rgba(48, 54, 61, 0.5);
+}
+
+.modal-btn-apply {
+    background: #1f6feb;
+    border: 1px solid #1f6feb;
+    color: #ffffff;
+    font-weight: 600;
+}
+
+.modal-btn-apply:hover {
+    background: #1a5acc;
+}
+
+.modal-input::-webkit-calendar-picker-indicator {
+    filter: invert(1);
+    cursor: pointer;
+}
+
+/* Badge zakresu wykresu */
+.chart-range-badge {
+    position: absolute;
+    top: 10px;
+    right: 10px;
+    background: rgba(22, 27, 34, 0.9);
+    border: 1px solid var(--border-color);
+    border-radius: 6px;
+    padding: 4px 10px;
+    font-size: 0.7rem;
+    color: #8b949e;
+    z-index: 10;
+    pointer-events: none;
+    backdrop-filter: blur(4px);
+    font-family: monospace;
+}
+
+@media (max-width: 576px) {
+    .chart-range-badge {
+        font-size: 0.65rem;
+        padding: 3px 8px;
+        top: 8px;
+        right: 8px;
+    }
+}
+