body {
    font-family: 'Montserrat', sans-serif;
    background-color: #f0f2f5;
    color: #333;
}

.container {
    max-width: 800px;
    margin-top: 50px;
}

.card {
    background-color: #fff;
    border: none;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-weight: bold;
    color: #333;
}

#clock {
    font-size: 1.2rem;
    font-weight: bold;
}

h1 {
    font-weight: bold;
}

.form-control {
    background-color: #f0f2f5;
    border: none;
    color: #333;
}

.form-control::placeholder {
    color: #999;
}

.btn-primary {
    background-color: #007bff;
    border: none;
}

.btn-primary:hover {
    background-color: #0056b3;
}

.list-group-item {
    background-color: #fff;
    border: none;
    color: #333;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.list-group-item .btn-group {
    display: none;
}

.list-group-item:hover .btn-group {
    display: block;
}

.completed {
    text-decoration: line-through;
    color: #999;
}

.progress-bar {
    background-color: #007bff;
}

.reminder-time {
    font-size: 0.8rem;
    color: #999;
    margin-left: 10px;
}

#note-input {
    min-height: 100px;
}

body.dark-mode {
    background-color: #121212;
    color: #fff;
}

.dark-mode .card {
    background-color: #1e1e1e;
    color: #fff;
}

.dark-mode .card-title {
    color: #fff;
}

.dark-mode .form-control {
    background-color: #2d2d2d;
    color: #fff;
}

.dark-mode .form-control::placeholder {
    color: #aaa;
}

.dark-mode .list-group-item {
    background-color: #1e1e1e;
    color: #fff;
}

.dark-mode .completed {
    color: #aaa;
}

.dark-mode .reminder-time {
    color: #aaa;
}