body {
    font-family: 'Poppins', sans-serif;
    text-align: center;
    background: url('https://www.simplilearn.com/ice9/free_resources_article_thumb/RNN_Tutorial.jpg') no-repeat center center/cover;
    margin: 0;
    padding: 20px;
    color: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

h1 {
    font-size: 4rem;
    margin-bottom: 20px;
    text-shadow: 3px 3px 15px rgba(0, 0, 0, 0.3);
    font-weight: bold;
}

.container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: auto;
}

.quadrant {
    padding: 40px;
    min-height: 280px;
    border-radius: 25px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(20px);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.quadrant:hover {
    transform: scale(1.07);
    box-shadow: 0 20px 35px rgba(0, 0, 0, 0.5);
}


#important-urgent {
    background: linear-gradient(135deg, rgba(255, 102, 102, 0.5), rgba(255, 51, 51, 0.3));
}

#important-not-urgent {
    background: linear-gradient(135deg, rgba(255, 165, 0, 0.5), rgba(255, 140, 0, 0.3));
}

#not-important-urgent {
    background: linear-gradient(135deg, rgba(0, 191, 255, 0.5), rgba(0, 128, 255, 0.3));
}

#not-important-not-urgent {
    background: linear-gradient(135deg, rgba(144, 238, 144, 0.5), rgba(34, 139, 34, 0.3));
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #fff;
}

.task-list {
    list-style: none;
    padding: 0;
    max-height: 300px;
    overflow-y: auto;
}

.task-list li {
    background: #ffffff;
    color: #333;
    padding: 14px;
    margin: 6px 0;
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.15);
}

.task-input {
    width: 75%;
    padding: 14px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: box-shadow 0.3s;
}

.task-input:focus {
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.add-task {
    padding: 14px 20px;
    background: #ff5722;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: bold;
    transition: background 0.3s, transform 0.2s;
}

.add-task:hover {
    background: #e64a19;
    transform: scale(1.05);
}

.delete-task {
    background: #d32f2f;
    color: white;
    border: none;
    padding: 8px 16px;
    cursor: pointer;
    border-radius: 6px;
    font-size: 1rem;
    transition: background 0.3s, transform 0.2s;
}

.delete-task:hover {
    background: #b71c1c;
    transform: scale(1.05);
}