@media(max-width:900px) {
    .content {
        grid-template-columns: 1fr;
    }
}

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

input,
select,
textarea {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 14px;
    box-sizing: border-box;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

.app {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    border: none;
    border-radius: 4px;
    background: linear-gradient(135deg, #0a3d62, #07517d);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: 0.35s;
    box-shadow: 0 6px 18px rgba(78, 78, 78, 0.25);
    margin-left: 8px;
}

.app:hover {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
    background: linear-gradient(135deg, #07517d, #0a3d62);
}

.preview-box {
    margin-top: 10px;
}

canvas {
    width: 100%;
    height: 300px;
    border-radius: 10px;
    border: 1px solid #ddd;
    background: #fafafa;
    object-fit: contain;
}

/* hidden */
.hidden {
    display: none;
}

/* progress */
.progress-bar {
    height: 8px;
    background: #eee;
    border-radius: 6px;
    overflow: hidden;
    margin-top: 10px;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: #0a3d62;
    transition: 0.2s;
}

.status {
    font-size: 13px;
    margin-top: 8px;
    color: #555;
}

.right {
    background: #fafafa;
    padding: 15px;
    border-radius: 10px;
    border: 1px solid #eee;
}