body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container {
    background: #fff;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 600px;
    text-align: center;
}

h1 {
    color: #4a4a4a;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

input[type="text"],
input[type="url"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

input[type="text"]:focus,
input[type="url"]:focus {
    border-color: #007bff;
    outline: none;
}

button {
    background-color: #007bff;
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s, transform 0.2s;
    width: 100%;
}

button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

#bookmarks-list {
    margin-top: 2rem;
    text-align: left;
}

.bookmark-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #fafafa;
    padding: 1rem;
    border: 1px solid #eee;
    border-radius: 8px;
    margin-bottom: 1rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.bookmark-item:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.bookmark-info a {
    text-decoration: none;
    color: #007bff;
    font-weight: bold;
    font-size: 1.1rem;
}

.bookmark-info span {
    display: block;
    color: #666;
    font-size: 0.9rem;
    margin-top: 0.2rem;
}

.actions {
    display: flex;
    gap: 0.5rem;
}

.actions button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.2s;
}

.actions .delete-btn {
    color: #dc3545;
}

.actions .delete-btn:hover {
    color: #c82333;
}