body {
    font-family: Arial;
    margin: 0;
    text-align: center;

    background: linear-gradient(-45deg, #4facfe, #00f2fe, #43e97b);
    background-size: 400% 400%;
    animation: bg 10s infinite;
}

@keyframes bg {
    0% {background-position:0%}
    50% {background-position:100%}
    100% {background-position:0%}
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.85); /* darker */
    color: white;
    padding: 15px;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

/* Menu items */
.navbar ul {
    display: flex;
    gap: 20px;
    list-style: none;
}

/* Links */
.navbar a {
    color: #ffffff;   /* pure white */
    font-weight: bold;
    text-decoration: none;
    padding: 5px 10px;
    border-radius: 5px;
    transition: 0.3s;
}

/* Hover */
.navbar a:hover {
    background: #00f2fe;
    color: black;
}
.card {
    background:rgba(255,255,255,0.2);
    backdrop-filter:blur(10px);
    width:350px;
    margin:30px auto;
    padding:20px;
    border-radius:15px;
}

input, button {
    padding:10px;
    margin:5px;
    border-radius:5px;
    border:none;
}

button {
    background:#4facfe;
    color:white;
}

li {
    display:flex;
    justify-content:space-between;
    background:#eee;
    margin:5px;
    padding:10px;
}

#progressFill {
    height:10px;
    background:green;
    width:0%;
}

.progress-bar {
    background:#ccc;
    height:10px;
}

#toast {
    position:fixed;
    bottom:20px;
    right:20px;
    background:#4facfe;
    color:white;
    padding:10px;
    opacity:0;
}

#toast.show {
    opacity:1;
}

/* Dark */
.dark {
    background:#121212;
    color:white;
}
.dark .navbar {
    background: rgba(0,0,0,0.95);
}

.dark .navbar a {
    color: #ffffff;
}
.input-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
#progressChart {
    max-width: 250px;
    margin: 20px auto;
}
.card {
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-8px);
}