.dn-form {
    background: #ffffff;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 4px rgba(15,25,35,.08);
}

.dn-section-title {
    font-size: 1rem;
    font-weight: 700;
    color: #000000 !important;
    margin: 0 0 .75rem;
}

.dn-label {
    display: block;
    font-size: .9rem;
    font-weight: 600;
    color: #0f1923;
    margin-bottom: .4rem;
}

.dn-input-row {
    display: flex;
    gap: .75rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.dn-input {
    flex: 1;
    min-width: 0;
    padding: .75rem 1rem;
    font-size: 1rem;
    border: 2px solid #d0d8e0;
    border-radius: 10px;
    background: #ffffff;
    color: #0f1923;
    box-sizing: border-box;
    outline: none;
    transition: border-color .15s;
}

.dn-input:focus {
    border-color: #005fa3;
    box-shadow: 0 0 0 3px rgba(0,95,163,.15);
}

.dn-run-btn {
    padding: .75rem 1.2rem;
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    background: #2d3f52;
    color: #ffffff;
    cursor: pointer;
    white-space: nowrap;
    transition: background .15s, transform .1s;
}

.dn-run-btn:hover  { background: #1e2d3d; }
.dn-run-btn:active { transform: scale(.98); }

.dn-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

@media (max-width: 480px) {
    .dn-row { grid-template-columns: 1fr; }
    .dn-input-row { flex-direction: column; }
    .dn-run-btn { width: 100%; }
}

.dn-select {
    width: 100%;
    padding: .65rem .9rem;
    font-size: .95rem;
    border: 2px solid #d0d8e0;
    border-radius: 10px;
    background: #ffffff;
    color: #0f1923;
    box-sizing: border-box;
    outline: none;
    transition: border-color .15s;
}

.dn-select:focus {
    border-color: #005fa3;
    box-shadow: 0 0 0 3px rgba(0,95,163,.15);
}

.dn-error {
    font-size: .875rem;
    color: #c0392b;
    margin-top: .5rem;
    display: none;
}

.dn-results {
    display: none;
    margin-bottom: 1.5rem;
}

.dn-summary-bar {
    margin-bottom: 1rem;
}

.dn-summary-bar h2 {
    margin: 0;
    font-size: 1.05rem;
    color: #fff;
}

.dn-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: .75rem;
}

.dn-card {
    background: #2d3f52;
    border-radius: 12px;
    padding: 1rem 1.1rem;
    border: 1px solid #3a4f63;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.dn-card-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 .2rem;
}

.dn-card-tld {
    font-size: .8rem;
    color: #8fa0b0;
    font-family: monospace;
}

.dn-check-btn {
    padding: .55rem 1rem;
    font-size: .85rem;
    font-weight: 700;
    border-radius: 8px;
    background: #394555;
    color: #90cff0;
    border: 1px solid #4a5c6e;
    text-decoration: none;
    white-space: nowrap;
    transition: background .15s, color .15s;
}

.dn-check-btn:hover { background: #4a5c6e; color: #ffffff; }

.dn-tips {
    margin-bottom: 1.5rem;
    background: #2d3f52;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #3a4f63;
}

.dn-tips-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 1rem 1.1rem;
    font-size: 1rem;
    font-weight: 700;
    color: #ffffff;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background .15s;
}

.dn-tips-head:hover { background: rgba(255,255,255,.05); }

.dn-tips-head svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform .3s ease;
}

.dn-tips-head[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.dn-tips-body {
    display: none;
    padding: 0 1.1rem 1.1rem;
}

.dn-tips-body h3 {
    font-size: .95rem;
    color: #90cff0;
    margin: 1rem 0 .3rem;
}

.dn-tips-body p {
    font-size: .875rem;
    color: #cbd5e1;
    margin: 0 0 .5rem;
    line-height: 1.6;
}

.dn-disclaimer {
    padding: .9rem 1.1rem;
    background: rgba(0,0,0,.2);
    border-radius: 10px;
    font-size: .8rem;
    color: #8fa0b0;
    line-height: 1.5;
}

.dn-disclaimer p { color: #8fa0b0; margin: 0; }