feat: Updated styling into seperate css files

frontend/src/components/ManageAuthProvidersModal.vue

@@ -187,95 +187,7 @@ const createProvider = async () => {
 onMounted(loadProviders);
 </script>
 
-<style scoped>
-.modal-backdrop-custom {
-    position: fixed;
-    inset: 0;
-    background: rgba(15, 23, 42, 0.45);
-    backdrop-filter: blur(2px);
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    z-index: 2000;
-    padding: 1.5rem;
-}
+<style scoped src="../assets/styles/scoped/components/ManageAuthProvidersModal.css"></style>
 
-.modal-panel {
-    width: min(920px, 100%);
-    max-height: min(92vh, 980px);
-    background: #fff;
-    border: 1px solid #dbe3ee;
-    border-radius: 14px;
-    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.2);
-    overflow: hidden;
-    display: flex;
-    flex-direction: column;
-}
 
-.provider-modal-header {
-    display: flex;
-    align-items: flex-start;
-    justify-content: space-between;
-    gap: 1rem;
-    padding: 1rem 1.25rem;
-    border-bottom: 1px solid #e5e7eb;
-    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
-}
 
-.provider-modal-title {
-    margin: 0;
-    font-weight: 600;
-}
-
-.provider-modal-close {
-    flex-shrink: 0;
-}
-
-.provider-modal-body {
-    padding: 1rem 1.25rem 1.25rem;
-    overflow-y: auto;
-    display: flex;
-    flex-direction: column;
-    gap: 1rem;
-}
-
-.provider-section {
-    border: 1px solid #e5e7eb;
-    border-radius: 10px;
-    background: #f8fafc;
-    padding: 0.9rem;
-}
-
-.provider-list {
-    max-height: 220px;
-    overflow: auto;
-}
-
-@media (max-width: 768px) {
-    .modal-backdrop-custom {
-        padding: 0.75rem;
-    }
-
-    .provider-modal-header,
-    .provider-modal-body {
-        padding-left: 0.85rem;
-        padding-right: 0.85rem;
-    }
-}
-
-/* Dark mode overrides */
-:root[data-bs-theme="dark"] .modal-panel {
-    background: #21252e;
-    border-color: #3a3f4b;
-}
-
-:root[data-bs-theme="dark"] .provider-modal-header {
-    background: linear-gradient(180deg, #2a2f3a 0%, #21252e 100%);
-    border-bottom-color: #3a3f4b;
-}
-
-:root[data-bs-theme="dark"] .provider-section {
-    background: #2a2f3a;
-    border-color: #3a3f4b;
-}
-</style>