* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #eef2f3; display: flex; justify-content: center; padding-top: 50px; min-height: 100vh; }
.container { background: white; padding: 30px; border-radius: 10px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); width: 450px; }
h1 { text-align: center; color: #2c3e50; margin-bottom: 25px; }
.input-area { display: flex; flex-direction: column; gap: 15px; margin-bottom: 30px; }
input { padding: 12px; border: 1px solid #ccc; border-radius: 6px; font-size: 16px; outline: none; }
input:focus { border-color: #3498db; }
button { padding: 12px; background: #3498db; color: white; border: none; border-radius: 6px; font-size: 16px; cursor: pointer; transition: 0.3s; }
button:hover { background: #2980b9; }
.bookmark-item { display: flex; justify-content: space-between; align-items: center; background: #ecf0f1; padding: 15px; border-radius: 6px; margin-bottom: 10px; }
.bookmark-item a { text-decoration: none; color: #2c3e50; font-weight: bold; font-size: 18px; }
.bookmark-item a:hover { color: #3498db; }
.delete-btn { background: #e74c3c; padding: 8px 12px; width: auto; font-size: 14px; }
.delete-btn:hover { background: #c0392b; }