body {
    font-family: sans-serif;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: right;
}

.main {
    text-align: center;
    margin-top: 50px;
}

.timer-container {
    font-size: 72px;
    margin-bottom: 20px;
}

.timer-controls button {
    font-size: 18px;
    padding: 10px 20px;
    margin: 0 10px;
    cursor: pointer;
}

.presence-container {
    margin-bottom: 20px;
}

.quote-container {
    margin-bottom: 50px;
}

.footer {
    text-align: center;
}

.todo-container {
    margin-top: 20px;
}

#todo-list {
    list-style: none;
    padding: 0;
}

#todo-list li {
    margin-bottom: 10px;
}

.todo-input {
    margin-top: 10px;
}

/* Day Theme */
body.day-mode {
    background-color: #f5f5f5;
    color: #333;
}

/* Night Theme */
body.night-mode {
    background-color: #222;
    color: #f5f5f5;
}