.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px;
    font-family: system-ui, Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
}

    .container h2 {
        text-align: center;
    }

.contribute-card {
    width: 75vw;
    max-width: 800px;
    border: 1px solid #ddd;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    padding: 16px;
    margin: 16px 0;
}

.row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

label {
    font-weight: 600;
    display: block;
    margin-bottom: 6px;
}

input, textarea, select {
    width: 80%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

.help {
    color: #555;
    font-size: 0.9rem;
    margin-top: 4px;
}

.errors {
    background: #fff1f1;
    border: 1px solid #ffcccc;
    padding: 10px;
    border-radius: 8px;
}

.btn {
    padding: 12px 16px;
    border-radius: 10px;
    border: 0;
    cursor: pointer;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

    .modal-overlay.active {
        display: flex;
    }

.modal {
    background: #fff;
    color: #000;
    max-width: 700px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    padding: 2rem;
    border-radius: 8px;
    position: relative;
}

    .modal h2 {
        margin-top: 0;
    }

.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    border: none;
    background: none;
    font-size: 1.8rem;
    cursor: pointer;
}