* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
}

body {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: white;
}

.container {
    width: 420px;
    padding: 30px;
    border-radius: 20px;
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(15px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
    text-align: center;
}

h1 {
    margin: 15px 0;
}

input, select {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border-radius: 10px;
    border: none;
}

button {
    width: 100%;
    padding: 10px;
    border-radius: 10px;
    border: none;
    margin-top: 10px;
    background: linear-gradient(135deg, #ff7a18, #ff4d00);
    color: white;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255,90,0,0.5);
}

.filters button {
    width: 32%;
    margin-top: 10px;
    font-size: 12px;
}

ul {
    list-style: none;
    margin-top: 15px;
    text-align: left;
}

ul li {
    padding: 8px;
    margin-bottom: 6px;
    border-radius: 8px;
    background: rgba(255,255,255,0.1);
    cursor: pointer;
}

.completed {
    text-decoration: line-through;
    opacity: 0.6;
}

.progress-card {
    margin-top: 20px;
    padding: 15px;
    border-radius: 15px;
    background: rgba(255,255,255,0.08);
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: rgba(255,255,255,0.2);
    border-radius: 20px;
    overflow: hidden;
    margin: 10px 0;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(135deg, #00c6ff, #0072ff);
    transition: width 0.4s ease;
    border-radius: 20px;
}
/* Popup Background */
.popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    justify-content: center;
    align-items: center;
}

/* Popup Box */
.popup-content {
    background: white;
    color: black;
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    width: 300px;
    animation: popScale 0.3s ease;
}

/* Animation */
@keyframes popScale {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.quote {
    font-style: italic;
    color: #555;
    margin: 10px 0;
}

.empty {
    color: gray;
    margin-top: 10px;
}

.progress-fill {
    height: 100%;
    width: 0%;
    transition: width 0.5s ease-in-out; /* Smooth animation */
}