* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #121212;
    color: white;
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.header {
    background-color: #1f1f1f;
    padding: 20px;
    border-bottom: 1px solid #333;
    text-align: center;
}

.logo { font-weight: bold; font-size: 20px; color: #4CAF50; }

.wrapper {
    display: flex;
    flex: 1;
}

.sidebar {
    width: 200px;
    background-color: #1a1a1a;
    padding: 20px;
    border-right: 1px solid #333;
}

.sidebar a {
    display: block;
    color: #bbb;
    text-decoration: none;
    margin-bottom: 15px;
}

.sidebar a:hover { color: #4CAF50; }

.content {
    flex: 1;
    display: flex;
    justify-content: center;
    padding-top: 40px;
}

.card {
    background-color: #222;
    padding: 30px;
    border-radius: 12px;
    width: 400px;
    height: fit-content;
    text-align: center;
}

.bar-out {
    background-color: #444;
    height: 10px;
    border-radius: 5px;
    margin: 10px 0;
}

#bar-in {
    background-color: #4CAF50;
    height: 100%;
    width: 0%;
}

.input-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

input {
    flex: 1;
    padding: 10px;
    background: #333;
    border: 1px solid #444;
    color: white;
}

button#addBtn {
    background: #4CAF50;
    border: none;
    color: white;
    padding: 10px 15px;
    cursor: pointer;
}

ul { list-style: none; padding: 0; text-align: left; }

li {
    background: #2a2a2a;
    padding: 10px;
    margin-bottom: 5px;
    display: flex;
    justify-content: space-between;
    cursor: pointer;
}

.completed span { text-decoration: line-through; color: #666; }

.del-btn {
    background: none;
    border: none;
    color: #ff4d4d;
    font-weight: bold;
    cursor: pointer;
}

#empty { margin: 20px 0; }

.footer {
    background-color: #1f1f1f;
    text-align: center;
    padding: 15px;
    border-top: 1px solid #333;
}