feat: some changes and admin

nextjs/src/styles/admin.module.scss

@@ -0,0 +1,141 @@
+.wrap {
+  max-width: 960px;
+  margin: 0 auto;
+  padding: 24px 16px 48px;
+  font-family: system-ui, sans-serif;
+  color: #1a1a1a;
+}
+
+.card {
+  background: #fff;
+  border: 1px solid #e0e0e0;
+  border-radius: 8px;
+  padding: 20px;
+  margin-bottom: 20px;
+}
+
+.title {
+  margin: 0 0 8px;
+  font-size: 1.5rem;
+}
+
+.sub {
+  color: #666;
+  margin: 0 0 16px;
+  font-size: 0.95rem;
+}
+
+.form {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  max-width: 360px;
+}
+
+.label {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  font-size: 0.9rem;
+}
+
+.input {
+  padding: 8px 10px;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  font-size: 1rem;
+}
+
+.textarea {
+  min-height: 100px;
+  font-family: inherit;
+}
+
+.btn {
+  padding: 10px 16px;
+  border: none;
+  border-radius: 4px;
+  background: #2563eb;
+  color: #fff;
+  font-size: 1rem;
+  cursor: pointer;
+  &:hover {
+    background: #1d4ed8;
+  }
+  &:disabled {
+    opacity: 0.6;
+    cursor: not-allowed;
+  }
+}
+
+.btnDanger {
+  background: #dc2626;
+  &:hover {
+    background: #b91c1c;
+  }
+}
+
+.btnGhost {
+  background: #f3f4f6;
+  color: #111;
+  &:hover {
+    background: #e5e7eb;
+  }
+}
+
+.error {
+  color: #b91c1c;
+  font-size: 0.9rem;
+}
+
+.success {
+  color: #15803d;
+  font-size: 0.9rem;
+}
+
+.nav {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 12px;
+  margin-bottom: 24px;
+  padding-bottom: 16px;
+  border-bottom: 1px solid #e5e7eb;
+}
+
+.nav a {
+  color: #2563eb;
+  text-decoration: none;
+  &:hover {
+    text-decoration: underline;
+  }
+}
+
+.table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 0.9rem;
+}
+
+.table th,
+.table td {
+  border: 1px solid #e5e7eb;
+  padding: 8px;
+  text-align: left;
+  vertical-align: top;
+}
+
+.table th {
+  background: #f9fafb;
+}
+
+.rowActions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+
+.hr {
+  border: none;
+  border-top: 1px solid #e5e7eb;
+  margin: 16px 0;
+}