chore: update

frontend-prep/src/components/Navbar.css

@@ -20,6 +20,24 @@
     --transition:    0.22s cubic-bezier(0.4, 0, 0.2, 1);
 }
 
+/* ============================================================
+   Light theme overrides
+   ============================================================ */
+[data-theme="light"] {
+    --bg:           #f4f4f8;
+    --surface:      #ffffff;
+    --surface-2:    #ebebf2;
+    --border:       rgba(0, 0, 0, 0.08);
+    --primary:      #7c3aed;
+    --primary-soft: rgba(124, 58, 237, 0.08);
+    --primary-glow: rgba(124, 58, 237, 0.18);
+    --cyan:         #0891b2;
+    --cyan-soft:    rgba(8, 145, 178, 0.1);
+    --red:          #dc2626;
+    --text:         #18181b;
+    --text-muted:   #52525b;
+}
+
 /* ============================================================
    Body offset
    ============================================================ */
@@ -41,11 +59,11 @@ body {
     align-items: center;
     padding: 0 0.75rem;
     gap: 0.5rem;
-    background: rgba(9, 9, 11, 0.92);
+    background: color-mix(in srgb, var(--bg) 92%, transparent);
     backdrop-filter: blur(20px);
     -webkit-backdrop-filter: blur(20px);
     border-bottom: 1px solid var(--border);
-    box-shadow: 0 1px 24px rgba(0, 0, 0, 0.4);
+    box-shadow: 0 1px 24px rgba(0, 0, 0, 0.15);
 }
 
 .topbar-toggle {
@@ -91,6 +109,33 @@ body {
     gap: 0.25rem;
 }
 
+/* ── Theme toggle button ── */
+.topbar-theme-btn {
+    width: 40px;
+    height: 40px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    background: transparent;
+    border: 1px solid transparent;
+    border-radius: var(--radius);
+    color: var(--text-muted);
+    font-size: 1rem;
+    cursor: pointer;
+    transition: all var(--transition);
+    -webkit-tap-highlight-color: transparent;
+}
+
+.topbar-theme-btn:hover {
+    background: var(--surface-2);
+    border-color: var(--border);
+    color: var(--text);
+}
+
+.topbar-theme-btn:active {
+    transform: scale(0.93);
+}
+
 /* ── Icon button (notif / cart) ── */
 .topbar-icon-btn {
     position: relative;