feat(back-end and front-end): back-office

frontend/src/app/features/admin/pages/admin-login.component.scss

@@ -0,0 +1,64 @@
+.admin-login-page {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  min-height: 70vh;
+  padding: 2rem 1rem;
+}
+
+.admin-login-card {
+  width: 100%;
+  max-width: 420px;
+  background: #fff;
+  border: 1px solid #d6dde8;
+  border-radius: 14px;
+  padding: 1.5rem;
+  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
+}
+
+h1 {
+  margin: 0;
+  font-size: 1.6rem;
+}
+
+p {
+  margin: 0.5rem 0 1.25rem;
+  color: #46546a;
+}
+
+form {
+  display: flex;
+  flex-direction: column;
+  gap: 0.65rem;
+}
+
+label {
+  font-weight: 600;
+}
+
+input {
+  border: 1px solid #c3cedd;
+  border-radius: 10px;
+  padding: 0.75rem;
+  font-size: 1rem;
+}
+
+button {
+  border: 0;
+  border-radius: 10px;
+  background: #0f3f6f;
+  color: #fff;
+  padding: 0.75rem 0.9rem;
+  font-weight: 600;
+  cursor: pointer;
+}
+
+button:disabled {
+  opacity: 0.65;
+  cursor: default;
+}
+
+.error {
+  margin-top: 1rem;
+  color: #b0182a;
+}