feat: add ripple effect, update theme styles and layout

src/components/Sidebar.vue

@@ -0,0 +1,69 @@
+<script setup>
+defineProps({
+  isOpen: {
+    type: Boolean,
+    default: true
+  }
+})
+</script>
+
+<template>
+  <aside class="sidebar unselectable" :class="{ 'is-open': isOpen }">
+    <nav class="sidebar-nav">
+      <router-link to="/passwords" class="nav-item" v-ripple>Passwords</router-link>
+    </nav>
+  </aside>
+</template>
+
+<style scoped>
+.sidebar {
+  width: 0;
+  background-color: var(--panel-bg);
+  backdrop-filter: blur(12px);
+  -webkit-backdrop-filter: blur(12px);
+  overflow-x: hidden;
+  transition: width 0.3s ease;
+  border-right: 1px solid var(--panel-border);
+  flex-shrink: 0;
+  height: 100%;
+  box-shadow: var(--panel-shadow);
+}
+
+.sidebar.is-open {
+  width: 250px;
+}
+
+.sidebar-nav {
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  width: 250px; /* Fixed width for content */
+}
+
+.nav-item {
+  display: block;
+  padding: 0.5rem;
+  color: var(--text-secondary);
+  text-decoration: none;
+  transition: background-color 0.2s, color 0.2s;
+  white-space: nowrap;
+  font-weight: bold;
+}
+
+.nav-item:hover {
+  background-color: var(--button-hover-bg);
+  color: var(--text-strong);
+}
+
+.nav-item.router-link-active {
+  color: var(--primary-accent);
+  background-color: var(--toggle-bg);
+  border-right: 2px solid var(--primary-accent);
+}
+
+.divider {
+  height: 1px;
+  background-color: var(--panel-border);
+  margin: 0.5rem 0;
+}
+</style>