.signal-range-banner {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 24px;
}

.signal-range-banner span {
    background: #eef5ff;
    border: 1px solid #cfe1ff;
    border-radius: 8px;
    color: #0056d8;
    font-size: 0.88rem;
    font-weight: 700;
    padding: 10px 8px;
    text-align: center;
}

.signal-input-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.signal-field {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.signal-field label {
    color: var(--text-main);
    font-size: 0.9rem;
    font-weight: 700;
}

.signal-field small {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.input-with-unit {
    display: flex;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input-with-unit:focus-within {
    border-color: #0066ff;
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.input-with-unit input {
    width: 100%;
    min-width: 0;
    border: 0;
    outline: 0;
    padding: 12px;
    font-size: 1rem;
}

.input-with-unit span {
    min-width: 54px;
    display: grid;
    place-items: center;
    background: #f4f6f9;
    border-left: 1px solid var(--border);
    color: #435160;
    font-size: 0.85rem;
    font-weight: 700;
}

.range-message {
    min-height: 42px;
    margin: 18px 0;
    border-radius: 8px;
    padding: 11px 14px;
    font-size: 0.88rem;
    font-weight: 600;
    visibility: hidden;
}

.range-message.is-valid {
    visibility: visible;
    background: #eaf9f3;
    border: 1px solid #bcebd8;
    color: #087a53;
}

.range-message.is-warning {
    visibility: visible;
    background: #fff6e5;
    border: 1px solid #f4d49b;
    color: #8a5900;
}

.signal-actions {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
}

.signal-actions .btn-tool {
    padding: 10px 5px;
}

.signal-reset {
    width: 100%;
    margin-top: 12px;
    background: #e9ecef;
}

.signal-reference {
    margin-top: 32px;
    padding-top: 26px;
    border-top: 1px solid var(--border);
}

.signal-reference h2 {
    font-size: 1.15rem;
    margin-bottom: 14px;
}

.reference-table-wrap {
    overflow-x: auto;
}

.signal-reference table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.signal-reference th,
.signal-reference td {
    padding: 10px;
    border: 1px solid var(--border);
    text-align: center;
}

.signal-reference th {
    background: #f4f6f9;
    color: #354250;
}

.signal-info-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.signal-info-card h4 {
    margin-bottom: 10px;
}

.signal-info-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
}

.signal-info-card code {
    display: block;
    margin-top: 8px;
    padding: 8px;
    border-radius: 5px;
    background: #f4f6f9;
    color: #25313c;
    font-size: 0.78rem;
}

@media (max-width: 640px) {
    .signal-range-banner,
    .signal-input-grid {
        grid-template-columns: 1fr;
    }

    .signal-range-banner {
        grid-template-columns: repeat(2, 1fr);
    }

    .signal-actions {
        grid-template-columns: repeat(3, 1fr);
    }
}