body {
    font-family: Arial, sans-serif;
    background: linear-gradient(to right, #e3f2fd, #ffffff);
    margin: 0;
    padding: 0;
    text-align: center;
}

header {
    background: #007BFF;
    color: white;
    padding: 20px;
}

.form-container {
    margin: 20px auto;
    width: 80%;
    max-width: 500px;
}

input, textarea {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border-radius: 8px;
    border: 1px solid #ccc;
}

button {
    padding: 10px 15px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    background: #007BFF;
    color: white;
    margin: 5px;
}

button:hover {
    opacity: 0.85;
}

.filters {
    margin: 15px;
}

#problemsContainer {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.card {
    width: 260px;
    background: white;
    margin: 10px;
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 5px 12px rgba(0,0,0,0.1);
    text-align: left;
    transition: transform 0.2s;
}

.card:hover {
    transform: scale(1.03);
}

.pending {
    border-left: 6px solid red;
}

.solved {
    border-left: 6px solid green;
}

.status {
    font-weight: bold;
}

.timestamp {
    font-size: 12px;
    color: gray;
}

.card button {
    width: 100%;
    margin-top: 5px;
}