.ulidg-soft-wrapper {
    /* Khai báo biến cục bộ, cách ly hoàn toàn */
    --neo-border: 3px solid #111111;
    --neo-shadow: 5px 5px 0px #111111;
    
    --bg-main: #f8f9fa;
    --bg-card: #ffffff;
    --clr-orange: #f77f00;
    --clr-blue: #4361ee;
    --clr-green: #06d6a0;
    --clr-text: #111111;

    max-width: 900px; 
    margin: 0 auto;
    font-family: system-ui, -apple-system, sans-serif;
    color: var(--clr-text);
    background: var(--bg-main);
    padding: 20px;
    border: var(--neo-border);
    border-radius: 16px;
    box-shadow: 6px 6px 0px #111111;
}

.ulidg-soft-wrapper * { box-sizing: border-box; }

.ulidg-soft-header {
    background: #111; padding: 20px; color: #fff;
    border: var(--neo-border); border-radius: 12px;
    text-align: center; margin-bottom: 25px; box-shadow: var(--neo-shadow);
}
.ulidg-soft-header h2 { margin: 0 0 10px 0; font-size: 1.6rem; font-weight: 900; color: var(--clr-orange); text-transform: uppercase;}
.ulidg-soft-header p { margin: 0; font-weight: 600; font-size: 0.95rem; color: #ddd; }

.ulidg-body { padding: 0; }

/* BỐ CỤC 2 CỘT */
.ulidg-main-layout { display: flex; flex-direction: column; gap: 20px; }
.ulidg-col { flex: 1; min-width: 0; display: flex; flex-direction: column; }
@media (min-width: 768px) { .ulidg-main-layout { flex-direction: row; align-items: stretch; } }

/* CARDS */
.ulidg-card {
    background: var(--bg-card); padding: 20px; border: var(--neo-border); 
    border-radius: 12px; box-shadow: var(--neo-shadow); height: 100%; display: flex; flex-direction: column;
}
.ulidg-output-card { background: #fdfdfd; }
.ulidg-card-title { margin: 0 0 20px 0; font-size: 1.2rem; font-weight: 900; border-bottom: 2px dashed #111; padding-bottom: 10px; }

/* INPUT & RANGE */
.ulidg-group { margin-bottom: 15px; }
.ulidg-flex-between { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.ulidg-label { font-weight: 800; font-size: 1rem; }
.ulidg-num-input {
    width: 80px; padding: 6px 10px; border: 2px solid #111; border-radius: 6px; 
    font-weight: 900; font-size: 1rem; text-align: center; box-shadow: 2px 2px 0px #111; outline: none;
}
.ulidg-num-input:focus { border-color: var(--clr-blue); }

.ulidg-range {
    -webkit-appearance: none; width: 100%; height: 10px; background: #eee; 
    border: 2px solid #111; border-radius: 5px; outline: none; margin-top: 10px;
}
.ulidg-range::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none; width: 22px; height: 22px; 
    background: var(--clr-orange); border: 2px solid #111; border-radius: 50%; 
    cursor: pointer; box-shadow: 2px 2px 0px #111; transition: 0.1s;
}
.ulidg-range::-webkit-slider-thumb:active { transform: scale(0.9); box-shadow: 0px 0px 0px #111; }

.ulidg-divider { border: 0; border-top: 2px dashed #ccc; margin: 20px 0; }

/* INFO BOX */
.ulidg-info-box { background: #eef2ff; border: 2px solid #111; border-radius: 8px; padding: 15px; box-shadow: 3px 3px 0px #111; }
.ulidg-info-box h4 { margin: 0 0 10px 0; font-size: 1rem; font-weight: 900; color: var(--clr-blue); }
.ulidg-info-box ul { margin: 0; padding-left: 20px; font-size: 0.9rem; font-weight: 600; line-height: 1.6; }
.ulidg-info-box li { margin-bottom: 5px; }

/* OUTPUT TEXTAREA */
.ulidg-textarea {
    flex: 1; min-height: 200px; width: 100%; padding: 15px; font-family: monospace; font-size: 1.1rem;
    font-weight: bold; color: #111; background: #fff; border: 3px solid #111; 
    border-radius: 8px; box-shadow: inset 3px 3px 0px rgba(0,0,0,0.1); 
    resize: vertical; word-break: break-all; outline: none; margin-bottom: 20px; white-space: pre-wrap;
}
.ulidg-textarea:focus { border-color: var(--clr-orange); }

/* BUTTONS */
.ulidg-action-buttons { display: flex; gap: 15px; margin-top: auto; }
.ulidg-btn {
    flex: 1; padding: 14px; font-weight: 900; font-size: 1rem; text-transform: uppercase;
    border: 2px solid #111; border-radius: 8px; cursor: pointer; transition: 0.15s;
    box-shadow: 3px 3px 0px #111; display: flex; align-items: center; justify-content: center; gap: 5px; color: #fff;
}
.ulidg-btn:active { transform: translate(3px, 3px); box-shadow: 0px 0px 0px #111; }
.ulidg-btn-orange { background: var(--clr-orange); color: #111; }
.ulidg-btn-blue { background: var(--clr-blue); }