/* ================================================
   DNS Checker Tool Styles
   ================================================ */

/* ── Form card ────────────────────────────────── */
.dns-form-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    margin: 24px 0 28px;
    box-shadow: var(--shadow-sm);
}

.dns-input-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.dns-domain-input {
    flex: 1;
    min-width: 0;
    padding: 11px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: var(--font-sans);
    color: var(--text);
    background: #fff;
    transition: border-color var(--ease), box-shadow var(--ease);
    outline: none;
    -webkit-appearance: none;
}

.dns-domain-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.dns-type-select {
    flex-shrink: 0;
    width: 96px;
    padding: 11px 10px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: .95rem;
    font-family: var(--font-sans);
    font-weight: 600;
    color: var(--text);
    background: #fff;
    cursor: pointer;
    outline: none;
    transition: border-color var(--ease);
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2364748b' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px;
}

.dns-type-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.dns-check-btn             { flex-shrink: 0; }
.dns-check-btn:disabled    { opacity: .5; cursor: not-allowed; pointer-events: none; }

.dns-form-error {
    color: #ef4444;
    font-size: .875rem;
    margin: 10px 0 0;
    font-weight: 500;
}

/* ── Results container ────────────────────────── */
.dns-results { margin-top: 4px; }

/* ── Results header ───────────────────────────── */
.dns-results-header {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    overflow: hidden;
}

.dns-query-info {
    background: var(--hdr-bg);
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.dns-query-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    color: #e2e8f0;
    font-weight: 600;
}

.dns-type-badge {
    background: var(--accent);
    color: #fff;
    font-size: .7rem;
    font-weight: 700;
    padding: 3px 11px;
    border-radius: 20px;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.dns-query-progress {
    font-size: .875rem;
    color: #64748b;
}

.dns-query-progress strong { color: #e2e8f0; }

/* ── Results body ─────────────────────────────── */
.dns-results-body {
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

/* ── Group ────────────────────────────────────── */
.dns-group { border-bottom: 2px solid var(--border); }
.dns-group:last-child { border-bottom: none; }

.dns-group-header {
    background: #f1f5f9;
    padding: 7px 20px;
    font-size: .7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

/* ── Provider ─────────────────────────────────── */
.dns-provider { background: var(--surface); }

.dns-provider-header {
    padding: 9px 20px 3px;
    font-size: .75rem;
    font-weight: 700;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: .05em;
    border-top: 1px solid #f1f5f9;
}

.dns-provider:first-child .dns-provider-header { border-top: none; }

/* ── Row ──────────────────────────────────────── */
.dns-row {
    display: grid;
    grid-template-columns: 36px 220px 1fr 72px;
    gap: 8px 14px;
    align-items: center;
    padding: 10px 20px;
    border-top: 1px solid #f8fafc;
    transition: background var(--ease);
}

.dns-row:hover { background: #fafbff; }

/* ── Status cell ──────────────────────────────── */
.dns-row-status {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
}

.dns-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(148, 163, 184, .3);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: dns-spin .8s linear infinite;
    display: block;
    flex-shrink: 0;
}

@keyframes dns-spin { to { transform: rotate(360deg); } }

.dns-status-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    line-height: 1;
    flex-shrink: 0;
}

.dns-status-icon.ok       { background: #dcfce7; color: #15803d; }
.dns-status-icon.nxdomain { background: #f1f5f9; color: var(--text-muted); font-size: 14px; }
.dns-status-icon.timeout  { background: #fef3c7; color: #b45309; font-size: 11px; }
.dns-status-icon.error    { background: #fee2e2; color: #dc2626; }

/* ── Server cell ──────────────────────────────── */
.dns-row-server { min-width: 0; }

.dns-row-hostname {
    display: block;
    font-size: .85rem;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dns-row-ip {
    display: block;
    font-size: .775rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    margin-top: 1px;
}

.dns-row-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 5px;
}

.dns-tag {
    font-size: .65rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: .05em;
    white-space: nowrap;
}

.tag-security { background: #dcfce7; color: #15803d; }
.tag-region   { background: #e0f2fe; color: #0369a1; }
.tag-service  { background: #f3e8ff; color: #7e22ce; }
.tag-ipv6     { background: #fef3c7; color: #b45309; }

/* ── Records cell ─────────────────────────────── */
.dns-row-records {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.dns-record {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: .8rem;
    color: var(--text);
    background: #f1f5f9;
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid var(--border);
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.status-ok .dns-record {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: #166534;
}

.dns-no-result {
    font-size: .825rem;
    color: var(--text-muted);
    font-style: italic;
}

.dns-placeholder { color: var(--text-muted); }

/* ── Time cell ────────────────────────────────── */
.dns-row-time {
    text-align: right;
    font-size: .8rem;
    font-family: var(--font-mono);
}

.dns-time            { color: var(--text-muted); }
.status-ok .dns-time { color: #15803d; }
.status-timeout .dns-time { color: #b45309; }

/* ── Intro text ───────────────────────────────── */
.dns-intro {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
    color: var(--text-light);
}

/* ── Copy button ──────────────────────────────── */
.dns-record-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.dns-copy-btn {
    flex-shrink: 0;
    padding: 2px 8px;
    font-size: .7rem;
    font-weight: 600;
    font-family: var(--font-sans);
    color: var(--text-muted);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    white-space: nowrap;
    transition: color var(--ease), background var(--ease), border-color var(--ease);
    line-height: 1.6;
}

.dns-copy-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-glow);
}

.dns-copy-btn.copied {
    color: #15803d;
    border-color: #86efac;
    background: #f0fdf4;
}

/* ── Inconsistency highlight ──────────────────── */
.dns-row.inconsistent {
    border-left: 3px solid #f59e0b;
    background: #fffbeb;
}

.dns-row.inconsistent:hover { background: #fef3c7; }

.dns-row.inconsistent .dns-record {
    background: #fef3c7;
    border-color: #fcd34d;
    color: #92400e;
}

/* ── Warning badge ────────────────────────────── */
.dns-warn-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 10px;
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
    border-radius: 20px;
    font-size: .75rem;
    font-weight: 700;
    white-space: nowrap;
}

/* ── History bar ──────────────────────────────── */
.dns-history-bar {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 10px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.dns-save-btn { flex-shrink: 0; }

.dns-save-btn.saved {
    color: #15803d;
    border-color: #86efac;
    background: #f0fdf4;
    opacity: 1;
    cursor: default;
    pointer-events: none;
}

.dns-compare-label-text {
    font-size: .875rem;
    color: var(--text-muted);
    white-space: nowrap;
    flex-shrink: 0;
}

.dns-compare-select {
    flex: 1;
    min-width: 220px;
    padding: 7px 10px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: .875rem;
    font-family: var(--font-sans);
    color: var(--text);
    background: #fff;
    cursor: pointer;
    outline: none;
    transition: border-color var(--ease);
}

.dns-compare-select:focus { border-color: var(--accent); }

/* ── Compare diff panel ───────────────────────── */
.dns-compare-panel {
    background: #f0f9ff;
    border-bottom: 2px solid #bae6fd;
    padding: 14px 24px 10px;
}

.dns-compare-header {
    font-size: .875rem;
    color: #0369a1;
    font-weight: 600;
    margin-bottom: 10px;
}

.dns-compare-none {
    font-size: .85rem;
    color: #15803d;
    font-style: italic;
    padding: 4px 0 6px;
}

.dns-compare-row {
    display: flex;
    gap: 16px;
    align-items: baseline;
    padding: 7px 0;
    border-top: 1px solid #e0f2fe;
    font-size: .83rem;
}

.dns-compare-server {
    flex-shrink: 0;
    width: 200px;
}

.dns-compare-hostname {
    display: block;
    font-weight: 500;
    color: var(--text);
    font-size: .8rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dns-compare-ip {
    display: block;
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--text-muted);
}

.dns-compare-diff {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
    flex: 1;
    font-family: var(--font-mono);
    font-size: .8rem;
}

.dns-compare-before { color: #b91c1c; }
.dns-compare-after  { color: #15803d; }

.dns-compare-arrow {
    color: var(--text-muted);
    flex-shrink: 0;
}

.dns-diff-label {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: .65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-right: 5px;
    opacity: .6;
}

/* ── Responsive ───────────────────────────────── */
@media (max-width: 700px) {
    .dns-input-row { flex-wrap: wrap; }
    .dns-domain-input { flex: 1 0 100%; order: 0; }
    .dns-type-select  { flex: 1;        order: 1; }
    .dns-check-btn    { flex: 1;        order: 2; }

    .dns-row {
        grid-template-columns: 32px 1fr 64px;
        grid-template-areas:
            "status server time"
            ".      records records";
        gap: 6px 10px;
    }

    .dns-row-status  { grid-area: status; }
    .dns-row-server  { grid-area: server; }
    .dns-row-records { grid-area: records; }
    .dns-row-time    { grid-area: time; }

    .dns-query-info { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 480px) {
    .dns-form-card { padding: 18px 16px; }
    .dns-row { padding: 10px 14px; }
    .dns-group-header,
    .dns-provider-header { padding-left: 14px; padding-right: 14px; }
    .dns-query-info { padding: 14px 16px; }
}