:root {
    --qbo-surface: #ffffff;
    --qbo-surface-soft: #f7f9fd;
    --qbo-line: rgba(10, 22, 40, 0.08);
    --qbo-line-strong: rgba(10, 22, 40, 0.12);
    --qbo-muted: #617087;
    --qbo-ink: #0d1c31;
    --qbo-blue: #2d68f6;
    --qbo-teal: #0fbf8c;
    --qbo-amber: #f3a24f;
    --qbo-coral: #e0674a;
    --qbo-rose: #d9496f;
    --qbo-chip: rgba(45, 104, 246, 0.08);
    --qbo-shadow: 0 24px 64px rgba(10, 22, 40, 0.08);
}

.qbo-tool-grid,
.qbo-dataset-grid {
    display: grid;
    gap: 1.25rem;
}

.qbo-tool-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
}

.qbo-dataset-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.qbo-panel,
.qbo-dataset-shell {
    background: var(--qbo-surface);
    border: 1px solid var(--qbo-line);
    border-radius: 24px;
    box-shadow: var(--qbo-shadow);
}

.qbo-panel {
    padding: 1.25rem;
}

.qbo-dataset-shell {
    padding: 1rem;
}

.qbo-panel-title {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.95rem;
}

.qbo-panel-title h3 {
    font-size: 1.1rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.qbo-panel-title span {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--qbo-muted);
}

.qbo-dropzone {
    display: grid;
    gap: 0.45rem;
    padding: 1.25rem;
    border-radius: 22px;
    border: 1.5px dashed rgba(45, 104, 246, 0.24);
    background: linear-gradient(180deg, rgba(45, 104, 246, 0.05) 0%, rgba(248, 249, 252, 0.92) 100%);
    color: var(--qbo-ink);
    cursor: pointer;
}

.qbo-dropzone input {
    display: none;
}

.qbo-dropzone strong {
    font-size: 1rem;
    line-height: 1.35;
}

.qbo-dropzone span {
    color: var(--qbo-muted);
    line-height: 1.65;
    font-size: 0.92rem;
}

.qbo-split {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0.95rem 0;
}

.qbo-split span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 52px;
    padding: 0.28rem 0.75rem;
    border-radius: 999px;
    background: var(--qbo-surface-soft);
    border: 1px solid var(--qbo-line);
    color: var(--qbo-muted);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.qbo-paste-wrap textarea,
.qbo-search-row input,
.qbo-text-input,
.qbo-select,
.qbo-search-row select {
    width: 100%;
    border: 1px solid var(--qbo-line-strong);
    border-radius: 16px;
    background: #fff;
    color: var(--qbo-ink);
    font: inherit;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.qbo-paste-wrap textarea:focus,
.qbo-search-row input:focus,
.qbo-text-input:focus,
.qbo-select:focus,
.qbo-search-row select:focus {
    outline: none;
    border-color: rgba(45, 104, 246, 0.5);
    box-shadow: 0 0 0 4px rgba(45, 104, 246, 0.1);
}

.qbo-paste-wrap textarea {
    min-height: 160px;
    padding: 1rem;
    resize: vertical;
}

.qbo-action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.qbo-action-row-wide {
    margin-top: 1.25rem;
    justify-content: flex-start;
}

.qbo-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0.7rem 1rem;
    border-radius: 14px;
    border: 1px solid transparent;
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
}

.qbo-btn:hover {
    transform: translateY(-1px);
}

.qbo-btn-primary {
    background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%);
    color: #fff;
    box-shadow: 0 14px 30px rgba(45, 104, 246, 0.18);
}

.qbo-btn-secondary {
    background: var(--qbo-surface-soft);
    border-color: var(--qbo-line);
    color: var(--qbo-ink);
}

.qbo-btn-tertiary {
    background: #fff;
    border-color: var(--qbo-line);
    color: var(--qbo-muted);
}

.qbo-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.qbo-status {
    margin-top: 0.9rem;
    padding: 0.85rem 1rem;
    border-radius: 16px;
    font-size: 0.92rem;
    line-height: 1.6;
    border: 1px solid transparent;
}

.qbo-status.muted {
    background: var(--qbo-surface-soft);
    color: var(--qbo-muted);
    border-color: var(--qbo-line);
}

.qbo-status.success {
    background: rgba(15, 191, 140, 0.08);
    color: #0b6b51;
    border-color: rgba(15, 191, 140, 0.16);
}

.qbo-status.error {
    background: rgba(217, 73, 111, 0.08);
    color: #8a2342;
    border-color: rgba(217, 73, 111, 0.14);
}

.qbo-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 0.9rem;
}

.qbo-meta-chip,
.qbo-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.75rem;
    border-radius: 999px;
    background: var(--qbo-chip);
    color: var(--qbo-ink);
    font-size: 0.8rem;
    font-weight: 600;
}

.qbo-mapping-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
    margin-top: 1rem;
}

.qbo-field {
    display: grid;
    gap: 0.35rem;
}

.qbo-field label {
    font-size: 0.77rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--qbo-muted);
}

.qbo-select,
.qbo-text-input {
    min-height: 46px;
    padding: 0.8rem 0.9rem;
}

.qbo-help {
    color: var(--qbo-muted);
    font-size: 0.82rem;
    line-height: 1.55;
}

.qbo-empty-state h3,
.qbo-card-head h3 {
    font-size: 1.2rem;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 0.45rem;
}

.qbo-empty-state p,
.qbo-card-head p,
.qbo-empty-item span,
.qbo-insight-card p,
.qbo-summary-card p,
.qbo-signal-card p {
    color: var(--qbo-muted);
    line-height: 1.7;
}

.qbo-empty-list,
.qbo-insight-grid,
.qbo-signal-grid,
.qbo-summary-grid {
    display: grid;
    gap: 0.9rem;
}

.qbo-empty-list {
    margin-top: 1rem;
}

.qbo-empty-item,
.qbo-insight-card,
.qbo-signal-card,
.qbo-summary-card,
.qbo-result-card {
    background: var(--qbo-surface-soft);
    border: 1px solid var(--qbo-line);
    border-radius: 20px;
}

.qbo-empty-item,
.qbo-insight-card,
.qbo-signal-card,
.qbo-summary-card {
    padding: 1rem;
}

.qbo-empty-item strong,
.qbo-insight-card strong,
.qbo-signal-card strong {
    display: block;
    margin-bottom: 0.35rem;
}

.qbo-results {
    display: grid;
    gap: 1rem;
}

.qbo-summary-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.qbo-summary-card strong {
    display: block;
    font-size: 1.65rem;
    line-height: 1;
    letter-spacing: -0.04em;
    margin-bottom: 0.35rem;
}

.qbo-summary-card span,
.qbo-signal-card span {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--qbo-muted);
    margin-bottom: 0.35rem;
}

.qbo-signal-grid,
.qbo-insight-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.qbo-signal-card strong {
    font-size: 1.5rem;
    line-height: 1;
    margin-bottom: 0.45rem;
}

.qbo-card-head {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.95rem;
}

.qbo-result-card {
    padding: 1rem;
}

.qbo-table-wrap {
    overflow: auto;
    border: 1px solid var(--qbo-line);
    border-radius: 18px;
    background: #fff;
}

.qbo-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

.qbo-table th,
.qbo-table td {
    padding: 0.8rem 0.9rem;
    border-bottom: 1px solid var(--qbo-line);
    text-align: left;
    vertical-align: top;
    font-size: 0.9rem;
}

.qbo-table th {
    position: sticky;
    top: 0;
    background: #f7f9fd;
    z-index: 1;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--qbo-muted);
}

.qbo-table tbody tr:hover {
    background: rgba(45, 104, 246, 0.04);
}

.qbo-flag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.qbo-flag {
    display: inline-flex;
    align-items: center;
    padding: 0.28rem 0.6rem;
    border-radius: 999px;
    background: rgba(217, 73, 111, 0.08);
    color: #8a2342;
    font-size: 0.74rem;
    font-weight: 700;
    line-height: 1.3;
}

.qbo-flag.is-warn {
    background: rgba(243, 162, 79, 0.14);
    color: #8f5a10;
}

.qbo-flag.is-good {
    background: rgba(15, 191, 140, 0.12);
    color: #0b6b51;
}

.qbo-search-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.9rem;
}

.qbo-search-row input,
.qbo-search-row select {
    min-height: 46px;
    padding: 0.8rem 0.9rem;
}

.qbo-search-row input {
    flex: 1 1 260px;
}

.qbo-search-row select {
    flex: 0 0 220px;
}

.qbo-inline-note {
    margin-top: 0.75rem;
    color: var(--qbo-muted);
    font-size: 0.85rem;
    line-height: 1.6;
}

.qbo-rule-note {
    margin-top: 0.9rem;
    padding: 0.9rem 1rem;
    border-radius: 16px;
    background: rgba(243, 162, 79, 0.1);
    border: 1px solid rgba(243, 162, 79, 0.16);
    color: #7e5311;
    font-size: 0.88rem;
    line-height: 1.6;
}

.qbo-balance-good {
    color: #0b6b51;
    font-weight: 700;
}

.qbo-balance-bad {
    color: #8a2342;
    font-weight: 700;
}

@media (max-width: 1120px) {
    .qbo-tool-grid,
    .qbo-dataset-grid,
    .qbo-summary-grid,
    .qbo-signal-grid,
    .qbo-insight-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 820px) {
    .qbo-tool-grid,
    .qbo-dataset-grid,
    .qbo-summary-grid,
    .qbo-signal-grid,
    .qbo-insight-grid,
    .qbo-mapping-grid {
        grid-template-columns: 1fr;
    }

    .qbo-panel,
    .qbo-dataset-shell {
        padding: 1rem;
    }

    .qbo-action-row,
    .qbo-search-row {
        flex-direction: column;
    }

    .qbo-search-row select {
        flex-basis: auto;
    }
}