:root {
    --ink: #15233a;
    --line: #243b63;
    --soft-line: #c5cedd;
    --panel: #f8fbff;
    --paper: #ffffff;
    --button: #243d6d;
    --button-hover: #31538e;
    --muted: #66738a;
    --accent: #287a60;
    --danger: #b13d45;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    background: linear-gradient(135deg, #dce6f3, #eef3f9 45%, #d4dfec);
}

button,
input {
    font: inherit;
}

.app-shell {
    width: min(1180px, calc(100vw - 28px));
    margin: 22px auto;
    border: 2px solid #6e7d90;
    background: #dfe8f2;
    box-shadow: 0 12px 32px rgba(30, 45, 70, 0.25);
}

.window-bar {
    border-bottom: 1px solid #9facbc;
    background: linear-gradient(#edf5ff, #c8d6e8);
}

.window-title {
    height: 30px;
    display: flex;
    align-items: center;
    padding: 0 14px;
    font-weight: 700;
    font-size: 13px;
}

.menu-bar {
    display: flex;
    gap: 4px;
    padding: 6px 10px;
    background: #f6f8fb;
    border-top: 1px solid #d4dbe5;
}

.menu-item {
    border: 0;
    background: transparent;
    color: #263950;
    font-weight: 700;
    font-size: 12px;
    padding: 5px 10px;
    cursor: pointer;
}

.menu-item.is-active,
.menu-item:hover {
    background: #dbe6f3;
}

.workspace {
    display: grid;
    grid-template-columns: minmax(360px, 0.95fr) minmax(440px, 1.35fr);
    gap: 8px;
    padding: 10px;
}

.left-column,
.right-column {
    min-width: 0;
}

.panel-title,
.control-panel,
.data-panel,
.analysis-panel,
.fieldset {
    border: 4px solid var(--line);
    background: var(--panel);
}

.panel-title {
    height: 92px;
    display: flex;
    align-items: center;
    padding: 0 18px;
    margin-bottom: 8px;
}

.panel-title h1 {
    margin: 0;
    font-size: clamp(27px, 3vw, 42px);
    letter-spacing: 0;
}

.control-panel {
    padding: 12px;
    margin-bottom: 18px;
}

.button-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 16px;
}

.action-button {
    min-height: 44px;
    border: 2px solid #d6e0f0;
    background: var(--button);
    color: #fff;
    font-weight: 800;
    font-size: 13px;
    cursor: pointer;
}

.action-button:hover {
    background: var(--button-hover);
}

.meta-list {
    display: grid;
    gap: 12px;
    margin: 0;
}

.meta-list div {
    display: grid;
    grid-template-columns: 145px 1fr;
    align-items: center;
    gap: 10px;
}

.meta-list dt {
    font-weight: 800;
}

.meta-list dd {
    margin: 0;
    font-weight: 650;
}

.number-input {
    width: 76px;
    min-height: 34px;
    border: 1px solid #aebbd0;
    padding: 4px 8px;
    background: #fff;
}

.field-box {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid #ccd6e5;
}

.field-label {
    font-weight: 800;
    margin-bottom: 8px;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    min-height: 34px;
    padding: 6px 8px;
    border: 1px solid #c8d2df;
    background: #fff;
    font-size: 13px;
    font-weight: 650;
}

.feature-item span {
    display: grid;
    gap: 3px;
}

.feature-item small {
    color: var(--muted);
    font-size: 11px;
    font-weight: 600;
    line-height: 1.25;
}

.feature-item.is-disabled {
    background: #f3f6fa;
    color: #5f6d80;
}

.feature-item.is-disabled input {
    cursor: not-allowed;
}

.fieldset {
    position: relative;
    padding: 22px 12px 12px;
    margin-top: 12px;
}

.legend {
    position: absolute;
    top: -13px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0 8px;
    background: #dfe8f2;
    font-weight: 800;
    font-size: 13px;
    white-space: nowrap;
}

.split-tables {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.mini-table-wrap,
.table-wrap {
    overflow: auto;
    background: var(--paper);
    border: 1px solid #b8c4d2;
}

.table-wrap {
    height: 708px;
}

.mini-table,
.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 360px;
    font-size: 13px;
}

.mini-table {
    min-width: 520px;
}

.data-table {
    min-width: 560px;
}

.mini-table th,
.mini-table td,
.data-table th,
.data-table td {
    border: 1px solid #d4dbe5;
    padding: 8px 9px;
    text-align: left;
    vertical-align: top;
}

.mini-table th,
.data-table th {
    background: #eef3f9;
    font-weight: 800;
    position: sticky;
    top: 0;
    z-index: 1;
}

.mini-table th strong,
.mini-table th small {
    display: block;
}

.mini-table th small {
    margin-top: 4px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 650;
    line-height: 1.25;
    white-space: normal;
}

.feature-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    margin-bottom: 5px;
    border: 1px solid #b8c4d2;
    background: #fff;
    font-size: 12px;
}

.data-table tr:nth-child(even) td,
.mini-table tr:nth-child(even) td {
    background: #f9fbfe;
}

.centroid-wrap {
    min-height: 140px;
}

#transformPanel .mini-table-wrap {
    max-height: 320px;
}

#transformPanel .mini-table th,
#transformPanel .mini-table td {
    padding: 10px 12px;
}

.workspace.is-process-mode {
    grid-template-columns: 1fr;
}

.workspace.is-analysis-mode {
    grid-template-columns: 1fr;
}

.workspace.is-transform-mode {
    grid-template-columns: 1fr;
}

.workspace.is-clusters-mode {
    grid-template-columns: 1fr;
}

.workspace.is-process-mode .left-column,
.workspace.is-process-mode .data-panel,
.workspace.is-process-mode .analysis-panel:not(#processDetailPanel) {
    display: none;
}

.workspace.is-analysis-mode .left-column,
.workspace.is-analysis-mode .data-panel,
.workspace.is-analysis-mode #transformDetailPanel,
.workspace.is-analysis-mode #clusterMembersPanel,
.workspace.is-analysis-mode #processDetailPanel {
    display: none;
}

.workspace.is-transform-mode .left-column,
.workspace.is-transform-mode .data-panel,
.workspace.is-transform-mode #analysisPanel,
.workspace.is-transform-mode #clusterMembersPanel,
.workspace.is-transform-mode #processDetailPanel {
    display: none;
}

.workspace.is-clusters-mode .left-column,
.workspace.is-clusters-mode .data-panel,
.workspace.is-clusters-mode #analysisPanel,
.workspace.is-clusters-mode #transformDetailPanel,
.workspace.is-clusters-mode #processDetailPanel {
    display: none;
}

.workspace.is-process-mode .right-column {
    width: 100%;
}

.workspace.is-analysis-mode .right-column {
    width: 100%;
}

.workspace.is-transform-mode .right-column {
    width: 100%;
}

.workspace.is-clusters-mode .right-column {
    width: 100%;
}

.workspace.is-process-mode #processDetailPanel {
    margin-top: 0;
}

.workspace.is-analysis-mode #analysisPanel {
    margin-top: 0;
}

.workspace.is-transform-mode #transformDetailPanel {
    margin-top: 0;
}

.workspace.is-clusters-mode #clusterMembersPanel {
    margin-top: 0;
}

.workspace.is-analysis-mode .chart-wrap {
    min-height: 560px;
}

.workspace.is-analysis-mode #clusterChart {
    height: 560px;
}

.process-fieldset {
    margin-bottom: 10px;
}

.formula-panel,
.process-panel {
    display: grid;
    gap: 12px;
}

.formula-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.formula-grid > div,
.process-block,
.process-empty {
    background: #fff;
    border: 1px solid #c8d2df;
    padding: 10px 12px;
}

.formula-grid h3,
.process-block h3 {
    margin: 0 0 6px;
    font-size: 14px;
}

.formula-grid p,
.process-block p {
    margin: 5px 0;
    color: #34445c;
    line-height: 1.45;
    font-size: 13px;
}

.math {
    display: inline-block;
    padding: 5px 7px;
    border: 1px solid #d7dfeb;
    background: #f6f9fd;
    color: #111f35;
    font-family: Consolas, "Courier New", monospace;
    font-weight: 700;
    overflow-wrap: anywhere;
}

.process-table-wrap {
    max-height: 260px;
    margin-top: 8px;
}

#processDetailPanel .process-table-wrap {
    max-height: 360px;
}

.transform-detail-fieldset {
    margin-top: 0;
}

.transform-detail-fieldset .split-tables {
    grid-template-columns: minmax(320px, 0.8fr) minmax(520px, 1.2fr);
    align-items: start;
}

.subpanel-heading {
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 900;
    text-align: center;
}

.workspace.is-transform-mode #transformPanel .mini-table-wrap {
    max-height: 560px;
}

.cluster-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.cluster-chip {
    border-left: 5px solid var(--cluster-color);
    background: #fff;
    border-top: 1px solid #c8d2df;
    border-right: 1px solid #c8d2df;
    border-bottom: 1px solid #c8d2df;
    padding: 8px 10px;
    font-weight: 800;
}

.cluster-members-list {
    display: grid;
    gap: 18px;
}

.cluster-members-section {
    border: 1px solid #b8c4d2;
    background: #fff;
}

.cluster-members-heading {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: #eef3f9;
    border-bottom: 1px solid #c8d2df;
}

.cluster-members-heading strong {
    font-size: 15px;
}

.cluster-members-heading span {
    font-weight: 800;
    color: var(--accent);
}

.cluster-members-heading small {
    color: var(--muted);
    font-weight: 700;
}

.cluster-members-table-wrap {
    max-height: 420px;
}

.cluster-members-table {
    min-width: 980px;
}

.data-panel {
    padding: 12px;
}

.panel-heading {
    text-align: center;
    font-weight: 900;
    margin-bottom: 10px;
}

.analysis-panel {
    margin-top: 10px;
    padding: 12px;
}

.analysis-panel.is-hidden {
    display: none;
}

.chart-wrap {
    min-height: 560px;
    background: #fff;
    border: 1px solid #b8c4d2;
}

#clusterChart {
    width: 100%;
    height: 560px;
    display: block;
}

.conclusion-fieldset {
    margin: 16px 0 0;
    border-width: 3px;
}

.conclusion-list {
    display: grid;
    gap: 10px;
    line-height: 1.5;
    font-size: 14px;
}

.cluster-note {
    overflow: hidden;
    border: 1px solid #c8d2df;
    border-left: 7px solid var(--cluster-color, var(--accent));
    background: #fff;
    box-shadow: 0 8px 18px rgba(25, 42, 70, 0.08);
}

.cluster-note p {
    margin: 6px 0 0;
}

.cluster-note-header {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    align-items: flex-start;
    padding: 12px 14px;
    background: linear-gradient(90deg, color-mix(in srgb, var(--cluster-color, var(--accent)) 18%, #fff), #f8fbff);
    border-bottom: 1px solid #d7dfeb;
}

.cluster-note-header > div:first-child {
    display: grid;
    gap: 6px;
}

.cluster-note-header strong {
    font-size: 18px;
}

.cluster-badge {
    display: inline-flex;
    width: fit-content;
    padding: 4px 8px;
    background: var(--cluster-color, var(--accent));
    color: #fff;
    font-size: 12px;
    font-weight: 900;
}

.dominant-diagnosis {
    min-width: min(330px, 45%);
    display: grid;
    gap: 4px;
    padding: 9px 10px;
    background: #fff;
    border: 1px solid #d1dae7;
}

.dominant-diagnosis span {
    color: var(--muted);
    font-size: 11px;
    font-weight: 900;
    text-transform: uppercase;
}

.dominant-diagnosis b {
    color: #111f35;
    font-size: 15px;
}

.cluster-metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    padding: 12px 14px;
    background: #f7fafd;
    border-bottom: 1px solid #d7dfeb;
}

.cluster-metrics div {
    min-height: 70px;
    display: grid;
    align-content: center;
    gap: 4px;
    padding: 9px 10px;
    background: #fff;
    border: 1px solid #d7dfeb;
}

.cluster-metrics span {
    color: var(--muted);
    font-size: 11px;
    font-weight: 900;
    text-transform: uppercase;
}

.cluster-metrics strong {
    color: #111f35;
    font-size: 20px;
}

.cluster-metrics small {
    color: var(--cluster-color, var(--accent));
    font-weight: 900;
}

.cluster-note-body {
    padding: 12px 14px 14px;
}

.analysis-summary {
    border: 1px solid #c8d2df;
    background: #fff;
    padding: 10px 12px;
}

.toast {
    position: fixed;
    right: 20px;
    bottom: 20px;
    max-width: 420px;
    padding: 14px 16px;
    background: #15233a;
    color: #fff;
    font-weight: 700;
    box-shadow: 0 12px 30px rgba(10, 20, 36, 0.25);
    opacity: 0;
    transform: translateY(14px);
    pointer-events: none;
    transition: 0.2s ease;
}

.toast.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.toast.is-error {
    background: var(--danger);
}

@media (max-width: 980px) {
    .workspace,
    .split-tables {
        grid-template-columns: 1fr;
    }

    .table-wrap {
        height: 460px;
    }

    .cluster-note-header,
    .cluster-metrics {
        grid-template-columns: 1fr;
    }

    .cluster-note-header {
        display: grid;
    }

    .dominant-diagnosis {
        min-width: 0;
    }

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

@media (max-width: 560px) {
    .app-shell {
        width: calc(100vw - 14px);
        margin: 7px auto;
    }

    .workspace {
        padding: 7px;
    }

    .button-grid,
    .feature-list,
    .meta-list div {
        grid-template-columns: 1fr;
    }

    .panel-title {
        height: 74px;
    }

    .cluster-metrics {
        grid-template-columns: 1fr;
    }
}