.kiv-diagnostic-tool {
    --diag-ink: #18342b;
    --diag-muted: #647b73;
    --diag-line: #dce8e2;
    --diag-soft: #f5f9f7;
    --diag-green: #13a66a;
    --diag-green-dark: #08784b;
    --diag-amber: #b96b13;
    --diag-red: #b43c45;
    color: var(--diag-ink);
}

.kiv-diagnostic-tool .diag-tabbar {
    align-items: stretch;
    background: #f7faf8;
    border-bottom: 1px solid var(--diag-line);
    display: flex;
    gap: 2px;
    margin: 0 0 24px;
    overflow-x: auto;
    padding: 0 10px;
    scrollbar-width: thin;
}

.kiv-diagnostic-tool .diag-tabbar > li {
    float: none;
    flex: 0 0 auto;
    margin: 0;
}

.kiv-diagnostic-tool .diag-tabbar > li > a {
    border: 0;
    border-radius: 0;
    color: #486058;
    font-size: 14px;
    font-weight: 600;
    margin: 0;
    min-height: 52px;
    padding: 16px 18px 13px;
    position: relative;
    white-space: nowrap;
}

.kiv-diagnostic-tool .diag-tabbar > li > a:hover,
.kiv-diagnostic-tool .diag-tabbar > li > a:focus {
    background: #eef6f2;
    color: var(--diag-green-dark);
    outline: 0;
}

.kiv-diagnostic-tool .diag-tabbar > li.active > a,
.kiv-diagnostic-tool .diag-tabbar > li.active > a:hover,
.kiv-diagnostic-tool .diag-tabbar > li.active > a:focus {
    background: #fff;
    border: 0;
    color: var(--diag-green-dark);
}

.kiv-diagnostic-tool .diag-tabbar > li.active > a::before {
    background: var(--diag-green);
    border-radius: 0 0 3px 3px;
    content: "";
    height: 3px;
    left: 12px;
    position: absolute;
    right: 12px;
    top: 0;
}

.kiv-diagnostic-tool .tool-intro {
    margin-bottom: 16px;
}

.kiv-diagnostic-tool .tool-intro h1 {
    color: #21362f;
    font-size: 25px;
    font-weight: 650;
    letter-spacing: -.02em;
    line-height: 1.25;
    margin: 0 0 8px;
}

.kiv-diagnostic-tool .tool-intro p {
    color: var(--diag-muted);
    font-size: 15px;
    line-height: 1.65;
    margin: 0;
    max-width: 920px;
}

.kiv-diagnostic-tool .local-badge {
    background: #e9f8f0;
    border: 1px solid #bfe9d2;
    border-radius: 999px;
    color: #08784b;
    display: inline-block;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .09em;
    margin-left: 8px;
    padding: 5px 8px 4px;
    vertical-align: middle;
}

.kiv-diagnostic-tool .diag-privacy-rail {
    align-items: center;
    background: #f0f8f4;
    border-left: 3px solid var(--diag-green);
    color: #3c6656;
    display: flex;
    font-size: 13px;
    gap: 9px;
    justify-content: space-between;
    margin: 0 0 18px;
    padding: 10px 13px;
}

.kiv-diagnostic-tool .diag-privacy-rail strong {
    color: #176b49;
}

.kiv-diagnostic-tool .diag-status {
    border: 0;
    border-radius: 3px;
    display: none;
    font-size: 13px;
    margin: 0 0 14px;
    padding: 10px 13px;
}

.kiv-diagnostic-tool .diag-status.is-visible { display: block; }
.kiv-diagnostic-tool .diag-status.is-ok { background: #edf8f2; color: #176b49; }
.kiv-diagnostic-tool .diag-status.is-warn { background: #fff7e8; color: #8c5718; }
.kiv-diagnostic-tool .diag-status.is-error { background: #fff0f1; color: #9e2935; }

.kiv-diagnostic-tool .diag-workspace {
    display: grid;
    gap: 16px;
    grid-template-columns: minmax(0, 1.05fr) minmax(330px, .95fr);
}

.kiv-diagnostic-tool .diag-stack {
    display: grid;
    gap: 16px;
}

.kiv-diagnostic-tool .diag-card {
    background: #fff;
    box-shadow: 0 1px 0 rgba(28, 70, 55, .06), 0 8px 24px rgba(31, 64, 53, .045);
    min-width: 0;
}

.kiv-diagnostic-tool .diag-card-head {
    align-items: center;
    background: #f8faf9;
    border-bottom: 1px solid var(--diag-line);
    display: flex;
    gap: 12px;
    justify-content: space-between;
    min-height: 48px;
    padding: 11px 15px;
}

.kiv-diagnostic-tool .diag-card-head > span:first-child {
    color: #29453b;
    font-size: 14px;
    font-weight: 700;
}

.kiv-diagnostic-tool .diag-card-head small {
    color: #779087;
    font-size: 12px;
    font-weight: 400;
}

.kiv-diagnostic-tool .diag-card-body { padding: 15px; }

.kiv-diagnostic-tool .diag-code,
.kiv-diagnostic-tool .diag-output,
.kiv-diagnostic-tool .diag-text-input {
    background: #fbfdfc;
    border: 1px solid #d3e1da;
    border-radius: 3px;
    box-shadow: none;
    color: #243d34;
    font: 13px/1.55 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    min-height: 310px;
    padding: 13px;
    resize: vertical;
    width: 100%;
}

.kiv-diagnostic-tool .diag-output {
    margin: 0;
    max-height: 520px;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.kiv-diagnostic-tool .diag-code:focus,
.kiv-diagnostic-tool .diag-text-input:focus,
.kiv-diagnostic-tool select:focus,
.kiv-diagnostic-tool input:focus {
    border-color: #62c596;
    box-shadow: 0 0 0 3px rgba(19, 166, 106, .1);
    outline: 0;
}

.kiv-diagnostic-tool .diag-dropzone {
    align-items: center;
    background: #f8fbf9;
    border: 1px dashed #a8c8b9;
    color: #536d63;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 6px;
    justify-content: center;
    min-height: 116px;
    padding: 18px;
    text-align: center;
}

.kiv-diagnostic-tool .diag-dropzone:hover,
.kiv-diagnostic-tool .diag-dropzone.is-dragover {
    background: #eef8f3;
    border-color: var(--diag-green);
}

.kiv-diagnostic-tool .diag-dropzone strong { color: #27664e; font-size: 14px; }
.kiv-diagnostic-tool .diag-dropzone small { color: #7b9289; }
.kiv-diagnostic-tool .diag-dropzone input { height: 1px; opacity: 0; position: absolute; width: 1px; }

.kiv-diagnostic-tool .diag-toolbar {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.kiv-diagnostic-tool .diag-toolbar .btn {
    border-radius: 3px;
    font-size: 13px;
    font-weight: 650;
    min-height: 36px;
    padding: 7px 13px;
}

.kiv-diagnostic-tool .diag-toolbar .btn-primary {
    background: var(--diag-green);
    border-color: var(--diag-green);
}

.kiv-diagnostic-tool .diag-toolbar .btn-primary:hover,
.kiv-diagnostic-tool .diag-toolbar .btn-primary:focus {
    background: #0b8c58;
    border-color: #0b8c58;
}

.kiv-diagnostic-tool .diag-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 12px;
}

.kiv-diagnostic-tool .diag-field {
    color: #4d675d;
    display: grid;
    font-size: 12px;
    font-weight: 650;
    gap: 5px;
    margin: 0;
    min-width: 150px;
}

.kiv-diagnostic-tool .diag-field input,
.kiv-diagnostic-tool .diag-field select {
    background: #fff;
    border: 1px solid #d3e1da;
    border-radius: 3px;
    color: #29453b;
    font-size: 13px;
    font-weight: 400;
    height: 36px;
    padding: 6px 9px;
}

.kiv-diagnostic-tool .diag-check {
    align-items: center;
    color: #526b62;
    display: inline-flex;
    font-size: 13px;
    font-weight: 500;
    gap: 6px;
    margin: 7px 0 0;
}

.kiv-diagnostic-tool .diag-metrics {
    display: grid;
    gap: 8px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-bottom: 12px;
}

.kiv-diagnostic-tool .diag-metric {
    background: var(--diag-soft);
    min-width: 0;
    padding: 10px 11px;
}

.kiv-diagnostic-tool .diag-metric strong {
    color: #155d42;
    display: block;
    font-size: 18px;
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kiv-diagnostic-tool .diag-metric span {
    color: #6d857c;
    display: block;
    font-size: 10px;
    letter-spacing: .05em;
    margin-top: 3px;
    text-transform: uppercase;
}

.kiv-diagnostic-tool .diag-table-wrap { overflow: auto; }
.kiv-diagnostic-tool .diag-table { font-size: 12px; margin: 0; width: 100%; }
.kiv-diagnostic-tool .diag-table th { background: #f5f8f6; color: #3e5c50; font-weight: 700; white-space: nowrap; }
.kiv-diagnostic-tool .diag-table td { color: #52675f; max-width: 320px; word-break: break-word; }

.kiv-diagnostic-tool .diag-findings {
    display: grid;
    gap: 7px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.kiv-diagnostic-tool .diag-finding {
    background: #f6f9f7;
    border-left: 3px solid #96afa3;
    color: #50665e;
    font-size: 12px;
    line-height: 1.45;
    padding: 8px 10px;
}

.kiv-diagnostic-tool .diag-finding.is-ok { border-left-color: var(--diag-green); color: #276b50; }
.kiv-diagnostic-tool .diag-finding.is-warn { background: #fff9ee; border-left-color: #df9a3e; color: #835515; }
.kiv-diagnostic-tool .diag-finding.is-error { background: #fff3f3; border-left-color: #d25a63; color: #983540; }

.kiv-diagnostic-tool .diag-empty {
    color: #879a93;
    font-size: 13px;
    padding: 22px 12px;
    text-align: center;
}

.kiv-diagnostic-tool .diag-preview {
    background: #fff;
    border: 1px solid var(--diag-line);
    min-height: 250px;
    width: 100%;
}

.kiv-diagnostic-tool .diag-kv {
    display: grid;
    gap: 1px;
    grid-template-columns: 150px minmax(0, 1fr);
}

.kiv-diagnostic-tool .diag-kv dt,
.kiv-diagnostic-tool .diag-kv dd {
    background: #f7faf8;
    margin: 0;
    padding: 8px 10px;
    word-break: break-word;
}

.kiv-diagnostic-tool .diag-kv dt { color: #426054; font-size: 12px; }
.kiv-diagnostic-tool .diag-kv dd { color: #667b73; font-size: 12px; }

.kiv-diagnostic-tool .diag-note {
    color: #789087;
    font-size: 11px;
    line-height: 1.5;
    margin: 9px 0 0;
}

.kiv-diagnostic-tool .diag-mode-panels > [data-mode-panel] { display: none; }
.kiv-diagnostic-tool .diag-mode-panels > [data-mode-panel].is-active { display: block; }

@media (max-width: 991px) {
    .kiv-diagnostic-tool .diag-workspace { grid-template-columns: 1fr; }
    .kiv-diagnostic-tool .diag-code,
    .kiv-diagnostic-tool .diag-output,
    .kiv-diagnostic-tool .diag-text-input { min-height: 250px; }
}

@media (max-width: 767px) {
    .kiv-diagnostic-tool .diag-tabbar { margin-left: -15px; margin-right: -15px; padding: 0 6px; }
    .kiv-diagnostic-tool .diag-tabbar > li > a { font-size: 13px; min-height: 46px; padding: 14px 12px 11px; }
    .kiv-diagnostic-tool .tool-intro h1 { font-size: 21px; }
    .kiv-diagnostic-tool .tool-intro p { font-size: 14px; }
    .kiv-diagnostic-tool .local-badge { margin-left: 3px; }
    .kiv-diagnostic-tool .diag-privacy-rail { align-items: flex-start; flex-direction: column; }
    .kiv-diagnostic-tool .diag-card-head { align-items: flex-start; flex-direction: column; gap: 3px; }
    .kiv-diagnostic-tool .diag-card-body { padding: 12px; }
    .kiv-diagnostic-tool .diag-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .kiv-diagnostic-tool .diag-kv { grid-template-columns: 1fr; }
    .kiv-diagnostic-tool .diag-kv dd { margin-bottom: 4px; }
    .kiv-diagnostic-tool .diag-toolbar .btn { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: reduce) {
    .kiv-diagnostic-tool * { scroll-behavior: auto !important; transition: none !important; }
}