:root {
        --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
        --mono: "SF Mono", "Fira Code", Consolas, monospace;
        --radius: 18px;
        --radius-sm: 14px;
        --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
        --shadow-soft: 0 8px 22px rgba(15, 23, 42, 0.06);
      }
      body[data-theme="light"] {
        --net: #596b7a;
        --traj: #2f93da;
        --traj-2: #ea9f3b;
        --impact: #8e44ad;
        --warning: #d6a510;
        --bg: #eef3f7;
        --panel: #ffffff;
        --panel-2: #f7fafc;
        --panel-3: #eef4f9;
        --text: #243444;
        --muted: #677888;
        --border: #d6e0e9;
        --accent: #3498db;
        --accent-2: #e67e22;
        --accent-soft: #eaf4fb;
        --success: #27ae60;
        --danger: #e74c3c;
        --track: #dfe7ef;
        --grid: rgba(36, 52, 68, 0.1);
        --axis: rgba(36, 52, 68, 0.82);
        --zero: rgba(36, 52, 68, 0.36);
        --plot: #ffffff;
        --plot-soft: #f6f9fc;
        --marker: #ffffff;
        --marker-stroke: #425466;
        --overlay: rgba(15, 23, 42, 0.42);
      }
      body[data-theme="dark"] {
        --net: #9aa7b6;
        --traj: #5bb8ff;
        --traj-2: #ffb35d;
        --impact: #c084fc;
        --warning: #e0b640;
        --bg: #0e1117;
        --panel: #161b22;
        --panel-2: #1c2333;
        --panel-3: #0f1723;
        --text: #e6edf3;
        --muted: #97a7bb;
        --border: #2d3748;
        --accent: #4ea8de;
        --accent-2: #f39c55;
        --accent-soft: #162231;
        --success: #3fb950;
        --danger: #f85149;
        --track: #263042;
        --grid: rgba(230, 237, 243, 0.09);
        --axis: rgba(230, 237, 243, 0.82);
        --zero: rgba(230, 237, 243, 0.28);
        --plot: #101926;
        --plot-soft: #0d1520;
        --marker: #ffffff;
        --marker-stroke: #4b5563;
        --overlay: rgba(0, 0, 0, 0.62);
      }
      * {
        box-sizing: border-box;
      }
      html {
        -webkit-text-size-adjust: 100%;
        scroll-behavior: smooth;
        height: 100%;
        overflow-x: hidden;
      }
      body {
        margin: 0;
        min-height: 100vh;
        min-height: 100dvh;
        font-family: var(--font);
        background: var(--bg);
        color: var(--text);
        transition:
          background 0.2s ease,
          color 0.2s ease;
        overflow-x: hidden;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        touch-action: pan-y;
        -webkit-tap-highlight-color: transparent;
      }
      button,
      input,
      select {
        font: inherit;
      }
      button,
      [role="button"],
      input,
      select,
      label {
        touch-action: manipulation;
      }

      .app {
        max-width: 1600px;
        margin: 0 auto;
        padding: 14px;
      }
      .header-card,
      .panel,
      .graph-card,
      .metric-card {
        background: var(--panel);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-soft);
      }
      .header-card {
        padding: 12px 14px;
        margin-bottom: 14px;
      }
      .header-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
      }
      .title-wrap {
        min-width: 0;
        flex: 1 1 auto;
      }
      .title-wrap h1 {
        margin: 0;
        font-size: clamp(1.08rem, 3.9vw, 1.55rem);
        line-height: 1.08;
        letter-spacing: -0.03em;
      }
      .title-wrap p {
        display: none;
      }
      .toolbar {
        display: flex;
        align-items: center;
        gap: 8px;
        flex: 0 0 auto;
      }
      .segmented {
        display: inline-flex;
        gap: 4px;
        padding: 4px;
        border-radius: 999px;
        background: var(--panel-2);
        border: 1px solid var(--border);
      }
      .segmented button {
        border: 0;
        background: transparent;
        color: var(--muted);
        padding: 0;
        border-radius: 999px;
        cursor: pointer;
        font-weight: 800;
        min-height: 38px;
        min-width: 38px;
        width: 38px;
        height: 38px;
        line-height: 1;
        display: grid;
        place-items: center;
      }
      .segmented button.active {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 4px 12px rgba(52, 152, 219, 0.24);
      }
      .icon-btn svg {
        width: 18px;
        height: 18px;
        display: block;
        stroke: currentColor;
        fill: none;
        stroke-width: 2;
        stroke-linecap: round;
        stroke-linejoin: round;
      }
      .icon-btn .icon-fill {
        fill: currentColor;
        stroke: none;
      }
      /* Switch de langue EN/FR : réutilise .segmented (pastilles rondes), texte court. */
      .lang-btn {
        font-size: 0.72rem;
        letter-spacing: 0.03em;
        font-weight: 800;
      }
      .dashboard {
        display: grid;
        grid-template-columns: 1fr;
        gap: 16px;
        align-items: start;
      }
      .panel {
        padding: 16px;
      }
      .panel h3,
      .graph-title,
      .metric-title {
        margin: 0 0 14px;
        font-size: 1rem;
        line-height: 1.2;
      }
      .control-group {
        margin-bottom: 14px;
      }
      .control-group:last-child {
        margin-bottom: 0;
      }
      .control-group label {
        display: flex;
        justify-content: space-between;
        gap: 10px;
        margin-bottom: 7px;
        font-size: 0.95rem;
        font-weight: 700;
      }
      .value-display {
        font-family: var(--mono);
        font-weight: 800;
        color: var(--success);
        white-space: nowrap;
      }
      .range {
        width: 100%;
        margin: 0;
        accent-color: var(--accent);
        touch-action: pan-y;
      }
      .range::-webkit-slider-thumb {
        width: 22px;
        height: 22px;
      }
      .select-row {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
      }
      select {
        width: 100%;
        min-height: 44px;
        padding: 11px 12px;
        border-radius: 12px;
        border: 1px solid var(--border);
        background: var(--panel-3);
        color: var(--text);
      }
      .player-section {
        margin-top: 12px;
        padding: 15px;
        border-radius: var(--radius-sm);
        background: var(--accent-soft);
        border-left: 4px solid var(--accent-2);
      }
      .player-section h3 {
        margin: 0 0 14px;
      }
      .visuals-panel {
        display: flex;
        flex-direction: column;
        gap: 16px;
        min-width: 0;
      }
      .heatmaps-zone,
      .metrics-zone {
        display: grid;
        grid-template-columns: 1fr;
        gap: 16px;
        min-width: 0;
      }
      .graph-card,
      .metric-card {
        overflow: hidden;
        min-width: 0;
      }
      .metric-card {
        padding: 14px 16px 16px;
      }
      .metric-card:has(.metric-head) {
        padding: 0;
      }
      .metric-card .metric-title {
        margin: 0 0 6px;
        font-size: 0.86rem;
        color: var(--muted);
        font-weight: 700;
        letter-spacing: 0.02em;
      }
      .metric-card .metric-value {
        word-break: break-word;
      }
      .metric-card .metric-sub {
        word-break: break-word;
      }
      .graph-head,
      .metric-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
        padding: 14px 16px 10px;
      }
      .graph-head {
        border-bottom: 1px solid var(--border);
      }
      .metric-head {
        padding-bottom: 0;
      }
      .graph-title,
      .metric-title {
        margin: 0;
        font-size: 1.02rem;
      }
      .info-btn {
        flex: 0 0 auto;
        width: 28px;
        height: 28px;
        border-radius: 999px;
        border: 1px solid var(--border);
        background: var(--panel-2);
        color: var(--accent);
        font-weight: 800;
        font-style: italic;
        cursor: pointer;
      }
      .plot-wrap {
        padding: 14px;
      }
      .plot-shell {
        display: grid;
        grid-template-columns: minmax(0, 1fr) 52px;
        gap: 10px;
        align-items: stretch;
      }
      .plot-stage {
        position: relative;
        width: 100%;
        aspect-ratio: 1/1.05;
        min-height: 320px;
        background: var(--plot);
        border: 1px solid var(--border);
        border-radius: 16px;
        overflow: hidden;
      }
      .plot-canvas,
      .plot-overlay {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        display: block;
      }
      .plot-overlay {
        pointer-events: none;
      }
      /* Carte vitesse interactive : on peut placer le point de contact. */
      .plot-stage.is-interactive {
        cursor: crosshair;
      }
      .plot-stage.is-interactive:hover {
        outline: 2px solid var(--accent);
        outline-offset: -2px;
      }
      .graph-hint {
        font-size: 0.72rem;
        font-weight: 600;
        color: var(--accent);
        white-space: nowrap;
      }
      .marker-label {
        position: absolute;
        min-width: 30px;
        padding: 3px 7px;
        border-radius: 999px;
        background: rgba(0, 0, 0, 0.18);
        color: #fff;
        font-size: 0.8rem;
        font-weight: 800;
        line-height: 1;
        text-align: center;
        pointer-events: none;
        transform: translate(-50%, -125%);
        text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
        backdrop-filter: blur(3px);
      }
      .colorbar {
        border: 1px solid var(--border);
        border-radius: 14px;
        background: var(--panel-2);
        padding: 10px 8px;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .colorbar-inner {
        position: relative;
        width: 100%;
        height: 100%;
        min-height: 260px;
        display: flex;
        justify-content: center;
      }
      .colorbar-track {
        position: absolute;
        left: 6px;
        top: 8%;
        bottom: 8%;
        width: 16px;
        border-radius: 999px;
        border: 1px solid rgba(0, 0, 0, 0.12);
      }
      .colorbar-ticks {
        position: absolute;
        left: 28px;
        top: 8%;
        bottom: 8%;
        right: 0;
        font-size: 0.76rem;
        color: var(--muted);
      }
      .colorbar-ticks span {
        position: absolute;
        transform: translateY(50%);
        white-space: nowrap;
        font-family: var(--mono);
      }
      .colorbar-title {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        text-align: left;
        font-size: 0.72rem;
        font-weight: 800;
        color: var(--muted);
      }
      .metric-body {
        padding: 14px 16px 16px;
      }
      .metric-value {
        font-family: var(--mono);
        font-size: clamp(1.5rem, 3.5vw, 2.7rem);
        font-weight: 900;
        letter-spacing: -0.04em;
        line-height: 1.15;
      }
      .metric-sub {
        margin-top: 5px;
        color: var(--muted);
        font-size: 0.84rem;
        line-height: 1.4;
      }
      .progress {
        height: 10px;
        border-radius: 999px;
        background: var(--track);
        overflow: hidden;
        margin-top: 12px;
      }
      .progress-fill {
        height: 100%;
        border-radius: 999px;
        transition:
          width 0.22s ease,
          background 0.22s ease;
      }
      .badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        margin-top: 12px;
        padding: 7px 10px;
        border-radius: 999px;
        background: var(--panel-2);
        border: 1px solid var(--border);
        font-size: 0.78rem;
        font-weight: 700;
        color: var(--muted);
      }
      .legend-row {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 12px;
        color: var(--muted);
        font-size: 0.8rem;
      }
      .legend-dot {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        display: inline-block;
        margin-right: 5px;
        vertical-align: middle;
      }
      .modal {
        position: fixed;
        inset: 0;
        padding: 12px;
        background: var(--overlay);
        display: none;
        align-items: flex-end;
        justify-content: center;
        z-index: 50;
        backdrop-filter: blur(4px);
      }
      .modal.open {
        display: flex;
      }
      .modal-sheet {
        width: min(620px, 100%);
        max-height: min(82vh, 760px);
        overflow: auto;
        background: var(--panel);
        color: var(--text);
        border: 1px solid var(--border);
        border-radius: 20px 20px 0 0;
        padding: 20px;
        box-shadow: var(--shadow);
      }
      .modal-tag {
        display: inline-block;
        margin-bottom: 8px;
        padding: 4px 10px;
        border-radius: 999px;
        background: var(--accent);
        color: #fff;
        font-size: 0.76rem;
        font-weight: 800;
      }
      .modal-sheet h4 {
        margin: 0 0 10px;
        font-size: 1.08rem;
      }
      .modal-sheet p {
        margin: 0 0 10px;
        line-height: 1.58;
        color: var(--muted);
      }
      .modal-sheet .ref {
        padding-top: 10px;
        border-top: 1px solid var(--border);
        font-size: 0.84rem;
        font-style: italic;
      }
      .modal-close {
        width: 100%;
        min-height: 44px;
        border: 0;
        border-radius: 12px;
        background: var(--panel-2);
        color: var(--text);
        font-weight: 800;
        margin-top: 12px;
        cursor: pointer;
      }
      .sr-only {
        position: absolute;
        left: -9999px;
      }
      @media (max-width: 520px) {
        .app {
          padding: 10px;
        }
        .title-wrap h1 {
          font-size: 1rem;
        }
        .select-row {
          grid-template-columns: 1fr;
        }
        .plot-shell {
          grid-template-columns: minmax(0, 1fr) 46px;
          gap: 8px;
        }
        .plot-stage {
          min-height: 300px;
        }
        .colorbar-title {
          font-size: 0.68rem;
        }
      }
      @media (min-width: 900px) {
        .dashboard {
          grid-template-columns: minmax(320px, 390px) minmax(0, 1fr);
        }
        .panel {
          position: sticky;
          top: 14px;
          max-height: calc(100vh - 28px);
          overflow: auto;
        }
        .heatmaps-zone {
          grid-template-columns: repeat(2, minmax(0, 1fr));
        }
        .metrics-zone {
          grid-template-columns: repeat(2, minmax(0, 1fr));
        }
        .modal {
          align-items: center;
        }
        .modal-sheet {
          border-radius: 20px;
        }
      }

      .hidden {
        display: none !important;
      }
      .check-row {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
        margin-top: 12px;
      }
      .check-pill {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 11px 12px;
        border-radius: 12px;
        border: 1px solid var(--border);
        background: var(--panel-2);
        font-size: 0.9rem;
        font-weight: 700;
        color: var(--text);
      }
      .check-pill input {
        width: 18px;
        height: 18px;
        accent-color: var(--accent);
        flex: 0 0 auto;
      }
      .plot-svg {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        display: block;
      }
      .metrics-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
      }
      .note-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 16px;
      }
      .note-card {
        background: var(--panel);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-soft);
        padding: 16px;
      }
      .note-title {
        margin: 0 0 10px;
        font-size: 1rem;
        line-height: 1.2;
      }
      .note-card p,
      .note-card li {
        margin: 0;
        color: var(--muted);
        line-height: 1.56;
      }
      .note-card ul {
        margin: 0;
        padding-left: 18px;
        display: grid;
        gap: 8px;
      }
      .eq {
        margin-top: 12px;
        padding: 12px 14px;
        border-radius: 14px;
        background: var(--panel-2);
        border: 1px solid var(--border);
        font-family: var(--mono);
        font-size: 0.84rem;
        line-height: 1.6;
        overflow: auto;
      }
      .validation-table {
        width: 100%;
        border-collapse: collapse;
        font-size: 0.9rem;
      }
      .validation-table th,
      .validation-table td {
        padding: 10px 8px;
        border-bottom: 1px solid var(--border);
        text-align: left;
        vertical-align: top;
      }
      .validation-table th {
        color: var(--muted);
        font-size: 0.82rem;
        text-transform: uppercase;
        letter-spacing: 0.04em;
      }
      .kpi-good {
        color: var(--success);
        font-weight: 800;
      }
      .kpi-warn {
        color: var(--warning);
        font-weight: 800;
      }
      .kpi-bad {
        color: var(--danger);
        font-weight: 800;
      }
      .footer-note {
        margin-top: 12px;
        color: var(--muted);
        font-size: 0.82rem;
        line-height: 1.5;
      }
      .helper {
        margin-top: 6px;
        color: var(--muted);
        font-size: 0.82rem;
        line-height: 1.45;
      }
      .section {
        margin-top: 14px;
        padding: 14px;
        border-radius: var(--radius-sm);
        background: var(--panel-2);
        border: 1px solid var(--border);
      }
      .section h3 {
        margin: 0 0 12px;
        font-size: 0.96rem;
      }
      @media (max-width: 420px) {
        .check-row,
        .metrics-grid {
          grid-template-columns: 1fr;
        }
        .plot-stage {
          aspect-ratio: 1.1/1;
          min-height: 280px;
        }
        #angleDiagramStage {
          aspect-ratio: 4/5 !important;
          min-height: 360px !important;
        }
      }
      @media (min-width: 421px) and (max-width: 640px) {
        .plot-stage {
          aspect-ratio: 1.1/1;
          min-height: 280px;
        }
        #angleDiagramStage {
          aspect-ratio: 4/5 !important;
          min-height: 360px !important;
        }
      }
      @media (min-width: 641px) {
        #angleDiagramStage {
          aspect-ratio: 16/9;
        }
      }
      @media (min-width: 800px) {
        .metrics-grid {
          grid-template-columns: repeat(3, minmax(0, 1fr));
          gap: 16px;
        }
      }
      @media (min-width: 980px) {
        .note-grid {
          grid-template-columns: 1.15fr 0.95fr;
        }
      }

      body[data-ui-mode="simple"] [data-level="expert"] {
        display: none !important;
      }
      body[data-ui-mode="expert"] [data-level="simple-only"] {
        display: none !important;
      }
      .app {
        max-width: 1480px;
        padding: 12px 12px 28px;
      }
      .app-header {
        position: sticky;
        top: 0;
        z-index: 34;
        padding-top: max(12px, env(safe-area-inset-top));
        -webkit-backdrop-filter: blur(18px);
        backdrop-filter: blur(18px);
        background: rgba(255, 255, 255, 0.88);
        background: color-mix(in srgb, var(--panel) 90%, transparent);
      }
      body[data-theme="dark"] .app-header {
        background: rgba(22, 27, 34, 0.88);
        background: color-mix(in srgb, var(--panel) 90%, transparent);
      }
      .header-actions {
        align-items: center;
        justify-content: flex-end;
      }
      .summary-strip {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
        margin-bottom: 14px;
      }
      .summary-card {
        padding: 14px 15px;
        border-radius: 18px;
        background: var(--panel);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-soft);
        display: grid;
        gap: 6px;
        min-height: 110px;
        cursor: pointer;
        transition:
          transform 0.16s ease,
          border-color 0.16s ease,
          box-shadow 0.16s ease;
        text-align: left;
        width: 100%;
        appearance: none;
        -webkit-appearance: none;
      }
      .summary-card:active {
        transform: scale(0.99);
      }
      .summary-card:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
      }
      .summary-card[data-tab-target] {
        position: relative;
      }
      .summary-card[data-tab-target]:hover {
        border-color: color-mix(in srgb, var(--accent) 42%, var(--border));
        box-shadow: 0 12px 30px rgba(52, 152, 219, 0.12);
      }
      .summary-label {
        font-size: 0.78rem;
        font-weight: 800;
        letter-spacing: 0.03em;
        text-transform: uppercase;
        color: var(--muted);
      }
      .summary-value {
        font-size: clamp(1.15rem, 4.5vw, 1.8rem);
        font-weight: 900;
        letter-spacing: -0.04em;
        line-height: 1.05;
      }
      .summary-sub {
        font-size: 0.84rem;
        line-height: 1.4;
        color: var(--muted);
      }
      .summary-link {
        display: none !important;
      }
      .tabbar {
        margin-top: 12px;
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 8px;
        padding: 8px;
        border: 1px solid var(--border);
        border-radius: 22px;
        background: color-mix(in srgb, var(--panel) 92%, transparent);
        box-shadow: var(--shadow-soft);
      }
      .tab-btn {
        border: 0;
        border-radius: 16px;
        padding: 10px 8px;
        background: transparent;
        color: var(--muted);
        font-weight: 800;
        cursor: pointer;
        min-height: 52px;
        line-height: 1.1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        text-align: center;
      }
      .tab-btn small {
        font-size: 0.69rem;
        font-weight: 700;
        letter-spacing: 0.02em;
        color: inherit;
      }
      .tab-btn.active {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 10px 20px rgba(52, 152, 219, 0.24);
      }
      .tab-panels {
        display: grid;
        position: relative;
        z-index: 1;
      }
      .tab-panel {
        display: none;
        gap: 16px;
        min-width: 0;
      }
      .tab-panel.active {
        display: grid;
      }
      .page-grid {
        display: grid;
        gap: 16px;
      }
      .page-grid-settings,
      .page-grid-trajectory {
        grid-template-columns: 1fr;
      }
      .results-stack {
        display: grid;
        gap: 16px;
      }
      .control-card,
      .context-card,
      .hero-card,
      .trajectory-plot-card,
      .trajectory-config-card {
        padding: 18px;
      }
      .section-kicker {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        margin-bottom: 10px;
        padding: 6px 10px;
        border-radius: 999px;
        background: var(--panel-2);
        border: 1px solid var(--border);
        font-size: 0.76rem;
        font-weight: 800;
        color: var(--muted);
        text-transform: uppercase;
        letter-spacing: 0.04em;
      }
      .panel-title-lg {
        margin: 0 0 6px;
        font-size: clamp(1.2rem, 2.8vw, 1.7rem);
        letter-spacing: -0.03em;
        line-height: 1.08;
      }
      .panel-lead {
        margin: 0 0 16px;
        color: var(--muted);
        line-height: 1.55;
        font-size: 0.94rem;
      }
      .panel-divider {
        height: 1px;
        background: var(--border);
        margin: 16px 0;
      }
      .info-list {
        display: grid;
        gap: 10px;
        margin: 0;
        padding-left: 18px;
        color: var(--muted);
        line-height: 1.55;
      }
      .callout {
        margin-top: 16px;
        padding: 14px;
        border-radius: 16px;
        background: var(--panel-2);
        border: 1px solid var(--border);
      }
      .callout strong {
        display: block;
        margin-bottom: 6px;
      }
      .callout p {
        margin: 0;
        color: var(--muted);
        line-height: 1.5;
      }
      .section-stack {
        display: grid;
        gap: 16px;
      }
      .field-card {
        padding: 14px;
        border-radius: 16px;
        background: var(--panel-2);
        border: 1px solid var(--border);
      }
      .field-card h3 {
        margin: 0 0 12px;
        font-size: 0.95rem;
      }
      .control-inline-hint {
        margin-top: 8px;
        font-size: 0.82rem;
        color: var(--muted);
        line-height: 1.45;
      }
      .badge-row {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 12px;
      }
      .mini-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 7px 10px;
        border-radius: 999px;
        background: var(--panel-2);
        border: 1px solid var(--border);
        font-size: 0.78rem;
        font-weight: 700;
        color: var(--muted);
      }
      .plot-card,
      .trajectory-plot-card {
        background: var(--panel);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-soft);
        overflow: hidden;
      }
      .plot-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        padding: 16px 18px 12px;
        border-bottom: 1px solid var(--border);
      }
      .plot-title {
        margin: 0;
        font-size: 1.05rem;
      }
      .trajectory-grid {
        display: grid;
        gap: 16px;
      }
      .helper-banner {
        margin: 0 0 14px;
        padding: 12px 14px;
        border-radius: 15px;
        background: var(--accent-soft);
        border: 1px solid var(--border);
        color: var(--text);
        line-height: 1.45;
      }
      .helper-banner p {
        margin: 0;
        color: var(--muted);
      }
      .expert-hint {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        margin-bottom: 12px;
        padding: 6px 10px;
        border-radius: 999px;
        background: rgba(230, 126, 34, 0.12);
        border: 1px solid rgba(230, 126, 34, 0.24);
        font-size: 0.76rem;
        font-weight: 800;
        color: var(--accent-2);
        letter-spacing: 0.03em;
        text-transform: uppercase;
      }
      .simple-bridge-notice {
        margin: 0 0 14px;
        padding: 12px 14px;
        border-radius: 15px;
        background: rgba(230, 126, 34, 0.1);
        border: 1px solid rgba(230, 126, 34, 0.28);
        color: var(--text);
        font-size: 0.88rem;
        line-height: 1.5;
      }
      .performance-hero {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
      }
      .performance-chip {
        padding: 14px;
        border-radius: 16px;
        background: var(--panel-2);
        border: 1px solid var(--border);
      }
      .performance-chip .label {
        font-size: 0.78rem;
        font-weight: 800;
        letter-spacing: 0.03em;
        text-transform: uppercase;
        color: var(--muted);
      }
      .performance-chip .value {
        margin-top: 6px;
        font-size: 1.2rem;
        font-weight: 900;
        letter-spacing: -0.03em;
      }
      .performance-chip .sub {
        margin-top: 6px;
        color: var(--muted);
        font-size: 0.84rem;
        line-height: 1.4;
      }
      .results-split {
        display: grid;
        gap: 16px;
      }
      @media (max-width: 720px) {
        .app-header {
          padding-inline: 12px;
        }
        .tabbar {
          grid-template-columns: repeat(2, minmax(0, 1fr));
        }
      }
      @media (max-width: 640px) {
        .summary-strip {
          grid-template-columns: 1fr 1fr;
        }
        .tab-btn {
          min-height: 56px;
        }
        .tab-btn small {
          display: none;
        }
        .performance-hero {
          grid-template-columns: 1fr;
        }
      }
      @media (min-width: 900px) {
        .summary-strip {
          grid-template-columns: repeat(4, minmax(0, 1fr));
        }
        .page-grid-settings {
          grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
        }
        .page-grid-trajectory {
          grid-template-columns: minmax(330px, 0.92fr) minmax(0, 1.08fr);
        }
        .results-split {
          grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        }
      }

      @media (max-width: 899px) {
        .app-header {
          position: static;
          top: auto;
        }
        .header-card {
          overflow: visible;
        }
        .summary-card,
        .tab-btn,
        .info-btn,
        .modal-close,
        .segmented button {
          pointer-events: auto;
        }
        .panel,
        .graph-card,
        .metric-card,
        .plot-stage {
          transform: translateZ(0);
        }
      }

      /* ===================================================================== */
      /* MODE SIMPLIFIÉ (#simpleApp) — vue « un seul écran »                    */
      /* ===================================================================== */
      #simpleApp {
        max-width: 1100px;
        margin: 0 auto;
        padding: 14px;
      }
      /* Bascule simple/expert pilotée par body[data-ui-mode] */
      body[data-ui-mode="simple"] .app {
        display: none;
      }
      body[data-ui-mode="expert"] #simpleApp {
        display: none;
      }

      /* Cockpit : réglages (gauche) | résultats (droite), tout visible sans scroll desktop */
      .cockpit {
        display: grid;
        grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
        gap: 14px;
        align-items: start;
      }
      /* Réglages : 2 sous-colonnes (Racket | Stroke), Advanced en pleine largeur */
      .col-controls {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 14px;
        align-content: start;
        min-width: 0;
      }
      .col-controls .simple-advanced {
        grid-column: 1 / -1;
      }
      .col-results {
        display: flex;
        flex-direction: column;
        gap: 10px;
        min-width: 0;
      }

      /* Barre résultat compacte — masquée en desktop, sticky en mobile */
      .sim-resultbar {
        display: none;
      }
      .simple-outcome .oc-detail {
        color: var(--muted);
        font-weight: 400;
      }

      .simple-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        flex-wrap: wrap;
      }
      /* Marque : logo TennisAddict + titre, groupés à gauche du header. */
      .brand {
        display: flex;
        align-items: center;
        gap: 12px;
        min-width: 0;
      }
      .brand-logo {
        height: 28px;
        width: auto;
        display: block;
        flex: 0 0 auto;
      }
      .simple-title {
        font-size: 1.25rem;
        margin: 0;
        font-weight: 700;
      }
      .simple-tag {
        font-size: 0.7rem;
        font-weight: 600;
        color: var(--muted);
        text-transform: uppercase;
        letter-spacing: 0.06em;
        margin-left: 4px;
      }
      .simple-header .toolbar {
        display: flex;
        align-items: center;
        gap: 10px;
      }
      .simple-expert-btn,
      .link-btn {
        background: transparent;
        border: 1px solid var(--border);
        color: var(--text);
        border-radius: var(--radius-sm);
        padding: 8px 14px;
        font-weight: 600;
        font-size: 0.85rem;
        cursor: pointer;
      }
      .link-btn {
        border: none;
        color: var(--accent);
        padding: 0 2px;
        text-decoration: underline;
      }
      .simple-expert-btn:hover {
        background: var(--panel-2);
      }

      .simple-hero {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
        margin-bottom: 12px;
      }
      .simple-hero .metric-card {
        padding: 12px 14px;
      }
      .simple-hero .metric-title {
        font-size: 0.78rem;
        color: var(--muted);
        font-weight: 600;
      }
      .simple-hero .metric-value {
        font-size: 1.6rem;
        font-weight: 700;
        line-height: 1.2;
      }
      .simple-hero .metric-unit {
        font-size: 0.8rem;
        color: var(--muted);
        font-weight: 600;
      }
      .simple-hero .metric-sub {
        font-size: 0.72rem;
        color: var(--muted);
      }
      /* La carte Confort (5e) prend toute la largeur pour équilibrer la grille 2 cols. */
      .simple-hero .metric-card:nth-child(5) {
        grid-column: 1 / -1;
      }

      /* Sélecteur de point d'impact (mode simple) : ellipse + 5 dots cardinaux. */
      .impact-picker {
        margin-top: 14px;
        padding-top: 12px;
        border-top: 1px solid var(--border);
        text-align: center;
      }
      .impact-picker-label {
        font-size: 0.82rem;
        font-weight: 600;
        margin-bottom: 6px;
      }
      .impact-picker-label .muted {
        color: var(--muted);
        font-weight: 500;
      }
      #s-impactpoint {
        width: 130px;
        height: 130px;
        max-width: 60%;
        touch-action: manipulation;
      }
      .impact-dot:hover {
        stroke: var(--accent);
      }
      .impact-picker-note {
        font-size: 0.7rem;
        color: var(--muted);
        min-height: 1.1em;
        margin-top: 2px;
      }

      .simple-outcome {
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        padding: 10px 14px;
        margin-bottom: 12px;
        font-weight: 600;
        font-size: 0.95rem;
        display: flex;
        align-items: center;
        gap: 8px;
      }
      .simple-outcome .oc-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        font-size: 0.75rem;
        color: #fff;
      }
      .simple-outcome.is-good {
        color: var(--success);
        border-color: var(--success);
      }
      .simple-outcome.is-good .oc-icon {
        background: var(--success);
      }
      .simple-outcome.is-warn {
        color: var(--warning);
        border-color: var(--warning);
      }
      .simple-outcome.is-warn .oc-icon {
        background: var(--warning);
      }
      .simple-outcome.is-bad {
        color: var(--danger);
        border-color: var(--danger);
      }
      .simple-outcome.is-bad .oc-icon {
        background: var(--danger);
      }

      .simple-diagrams {
        display: grid;
        grid-template-columns: 1fr;
        gap: 10px;
        margin-bottom: 6px;
        align-items: stretch;
      }
      .diag-card {
        padding: 6px 10px 8px;
        display: flex;
        flex-direction: column;
      }
      .diag-title {
        font-size: 0.72rem;
        color: var(--muted);
        margin: 0 0 2px 1px;
      }
      .diag-stage {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: center;
      }
      .diag-stage svg {
        width: 100%;
        height: auto;
        display: block;
      }
      /* Schémas plafonnés en largeur → hauteur réduite, pour que la colonne résultats
         ne dépasse pas les cartes de réglages (bas alignés, « Strung » jamais plus bas). */
      #s-impact {
        max-width: 255px;
      }
      #s-traj {
        max-width: 380px;
      }
      .diag-legend {
        display: flex;
        flex-wrap: wrap;
        justify-content: center; /* centré horizontalement sous les diagrammes */
        gap: 6px 16px;
        margin-bottom: 16px;
        font-size: 0.72rem;
        color: var(--muted);
      }
      .diag-legend span {
        display: inline-flex;
        align-items: center;
        gap: 5px;
      }
      .diag-legend .lg-line {
        width: 20px;
        height: 0;
        border-top-width: 2.5px;
        border-top-style: solid;
      }
      .diag-legend .lg-incoming {
        border-top-style: dashed;
        border-top-color: var(--accent-2);
      }
      .diag-legend .lg-outgoing {
        border-top-color: var(--success);
      }
      .diag-legend .lg-swing {
        border-top-color: var(--muted);
      }
      .diag-legend .lg-bar {
        width: 4px;
        height: 12px;
        background: var(--text);
        transform: rotate(10deg);
      }
      .diag-legend .lg-court {
        width: 14px;
        height: 4px;
        border-radius: 1px;
        background: var(--traj);
        opacity: 0.5;
      }

      .simple-panel {
        margin-bottom: 14px;
      }
      /* Titres de blocs centrés (mode simple) */
      .simple-panel .section-kicker {
        display: block;
        width: fit-content;
        margin-left: auto;
        margin-right: auto;
      }
      /* Cartes résultats centrées (mode simple) */
      .simple-hero .metric-card {
        text-align: center;
      }
      .simple-controls {
        display: grid;
        grid-template-columns: 1fr;
        gap: 13px;
        margin-top: 10px;
      }
      .simple-controls .control-group.full {
        grid-column: 1 / -1;
      }
      .tickrow {
        position: relative;
        height: 20px;
        margin-top: 2px;
      }
      .tickrow .tick {
        position: absolute;
        transform: translateX(-50%);
        text-align: center;
        font-size: 0.66rem;
        color: var(--muted);
        white-space: nowrap;
      }
      .tickrow .tick i {
        display: block;
        width: 1px;
        height: 5px;
        background: var(--border);
        margin: 0 auto 1px;
      }
      .strung-readout {
        margin-top: 8px;
        background: var(--accent-soft);
        color: var(--text);
        border-radius: var(--radius-sm);
        padding: 9px 13px;
        font-size: 0.82rem;
      }
      /* En mode simple : la ligne « Strung (as played) » vit sous la colonne RACKET
         (1re sous-colonne des réglages), texte centré par rapport à cette colonne. */
      .col-controls .strung-readout {
        grid-column: 1;
        align-self: start;
        text-align: center;
        margin-top: 0;
      }
      .strung-readout .muted {
        color: var(--muted);
      }
      .simple-advanced {
        margin-bottom: 24px;
      }
      .simple-advanced summary {
        cursor: pointer;
        font-weight: 600;
        color: var(--muted);
      }
      .simple-advanced .control-group {
        margin-top: 12px;
      }

      /* Tablette / mobile : on empile, et la barre résultat compacte devient sticky */
      @media (max-width: 899px) {
        /* #simpleApp devient le conteneur de défilement → la barre résultat sticky
           s'ancre dedans (les overflow globaux de body/html cassent sinon le sticky). */
        #simpleApp {
          max-width: 680px;
          height: 100dvh;
          overflow-y: auto;
          -webkit-overflow-scrolling: touch;
        }
        .cockpit {
          grid-template-columns: 1fr;
        }
        .col-controls {
          grid-template-columns: 1fr;
        }
        /* Les chiffres vivent dans la barre sticky → on masque le hero/verdict dupliqués */
        .col-results .simple-hero,
        .col-results > .simple-outcome {
          display: none;
        }
        .sim-resultbar {
          display: flex;
          align-items: center;
          gap: 8px 14px;
          flex-wrap: wrap;
          position: sticky;
          top: 0;
          z-index: 25;
          background: var(--panel);
          border: 1px solid var(--border);
          border-radius: var(--radius-sm);
          padding: 9px 13px;
          margin-bottom: 12px;
          box-shadow: var(--shadow-soft);
        }
        .rb-stat {
          display: inline-flex;
          align-items: baseline;
          gap: 3px;
          font-size: 0.72rem;
          color: var(--muted);
        }
        .rb-stat b {
          font-size: 1.05rem;
          color: var(--text);
        }
        .rb-verdict {
          margin-left: auto;
          display: inline-flex;
          align-items: center;
          gap: 5px;
          font-weight: 600;
          font-size: 0.82rem;
        }
        .rb-verdict.is-good {
          color: var(--success);
        }
        .rb-verdict.is-warn {
          color: var(--warning);
        }
        .rb-verdict.is-bad {
          color: var(--danger);
        }
        .rb-verdict .oc-detail {
          display: none;
        }
      }
      @media (max-width: 560px) {
        .simple-diagrams {
          grid-template-columns: 1fr;
        }
        .simple-controls {
          grid-template-columns: 1fr;
        }
        .rb-stat {
          font-size: 0.66rem;
        }
        .rb-stat b {
          font-size: 0.95rem;
        }
      }

      /* ===================================================================== */
      /* MODE EXPERT (.app) — cockpit live (même esprit que le simple)          */
      /* ===================================================================== */
      .app {
        max-width: 1340px;
      }
      /* Réglages (gauche) plus étroits ; résultats (heatmaps + trajectoire) plus larges */
      .cockpit-expert {
        grid-template-columns: minmax(320px, 0.85fr) minmax(0, 1.4fr);
      }
      /* Desktop ≥900px : l'app expert remplit le viewport ; l'en-tête reste en haut et
         CHAQUE colonne défile indépendamment jusqu'à son DERNIER élément (rien n'est
         coupé). La trajectoire (droite) reste visible pendant qu'on règle un curseur en
         haut à gauche (ex. head size). En mobile (<900px) : flux de page normal. */
      @media (min-width: 900px) {
        body[data-ui-mode="expert"] .app {
          display: flex;
          flex-direction: column;
          height: 100vh;
          height: 100dvh;
        }
        .cockpit-expert {
          flex: 1 1 auto;
          min-height: 0; /* indispensable pour que les colonnes puissent défiler */
        }
        .cockpit-expert .col-controls,
        .cockpit-expert .col-results {
          max-height: 100%;
          overflow-y: auto;
          overflow-x: hidden;
          padding-right: 8px;
          padding-bottom: 24px; /* le dernier élément reste entièrement visible */
          scrollbar-gutter: stable;
        }
        /* enfants non compressibles → ils gardent leur taille et débordent dans le scroll */
        .cockpit-expert .col-results > * {
          flex-shrink: 0;
        }
      }
      /* Réglages en une seule colonne : cartes pleine largeur, libellés sans retour à la ligne */
      .cockpit-expert .col-controls {
        grid-template-columns: 1fr;
      }
      /* Annule le sticky + max-height + overflow hérités de l'ancien layout expert
         (.panel à ≥900px) : ils provoquaient un scroll interne dans les cartes hautes
         (Advanced surtout). Dans le cockpit, les cartes coulent naturellement. */
      .cockpit .panel {
        position: static;
        max-height: none;
        overflow: visible;
      }
      /* Dans la colonne résultats : métriques gear/spin EMPILÉES AU-DESSUS des heatmaps,
         chacune en 2 sous-colonnes (spin | rpm  ·  ACOR | vitesse). */
      .cockpit-expert .results-split {
        grid-template-columns: 1fr;
      }
      .cockpit-expert .heatmaps-zone,
      .cockpit-expert .metrics-zone {
        grid-template-columns: 1fr 1fr;
      }
      /* Cohérence visuelle : hero (Live result) ET cartes gear (spin/rpm) partagent la
         même structure entête/corps/barre et la même échelle typo (titre discret, valeur
         1.6rem) — toute la colonne résultats parle le même langage. */
      .cockpit-expert .simple-hero .metric-card,
      .cockpit-expert .metrics-zone .metric-card,
      .cockpit-expert .metrics-grid .metric-card {
        padding: 0;
      }
      .cockpit-expert .simple-hero .metric-head,
      .cockpit-expert .metrics-zone .metric-head,
      .cockpit-expert .metrics-grid .metric-head {
        padding: 12px 14px 0;
      }
      .cockpit-expert .simple-hero .metric-title,
      .cockpit-expert .metrics-zone .metric-title,
      .cockpit-expert .metrics-grid .metric-title {
        font-size: 0.78rem;
        font-weight: 600;
        color: var(--muted);
        letter-spacing: 0.02em;
      }
      .cockpit-expert .simple-hero .metric-body,
      .cockpit-expert .metrics-zone .metric-body,
      .cockpit-expert .metrics-grid .metric-body {
        padding: 8px 14px 14px;
        text-align: center;
      }
      .cockpit-expert .simple-hero .metric-value,
      .cockpit-expert .metrics-zone .metric-value,
      .cockpit-expert .metrics-grid .metric-value {
        font-size: 1.6rem;
        font-weight: 700;
      }
      /* Sous-texte des cartes : même style discret partout dans la colonne résultats. */
      .cockpit-expert .simple-hero .metric-sub,
      .cockpit-expert .metrics-zone .metric-sub,
      .cockpit-expert .metrics-grid .metric-sub {
        font-size: 0.74rem;
        color: var(--muted);
        margin-top: 4px;
        line-height: 1.35;
      }
      /* Carte « Spin Estimation » : deux nombres (flight / estimated) sur une ligne. */
      .cockpit-expert .simple-hero .metric-value--dual {
        font-size: 1.1rem;
        white-space: nowrap;
      }
      .metric-sep {
        color: var(--muted);
        font-weight: 600;
        margin: 0 2px;
      }
      /* Légende low/mid/high centrée sous la barre (cohérence avec les nombres centrés). */
      .cockpit-expert .metrics-zone .legend-row {
        justify-content: center;
      }
      /* Labels de groupe dans la colonne résultats : variante de .section-kicker
         sans fond/bordure, pour structurer le flux (Live result / Stringbed maps /
         Ball flight) sans alourdir visuellement. */
      .cockpit-expert .results-kicker {
        background: transparent;
        border: none;
        padding: 4px 2px 0;
        margin-bottom: 2px;
        color: var(--muted);
      }
      .cockpit-expert .results-kicker:not(:first-child) {
        margin-top: 6px;
      }
      /* Bloc Advanced (<details>) : chevron propre */
      details.simple-advanced > summary {
        list-style: none;
        padding: 2px 0;
      }
      details.simple-advanced > summary::-webkit-details-marker {
        display: none;
      }
      details.simple-advanced > summary::before {
        content: "▸ ";
        color: var(--muted);
      }
      details.simple-advanced[open] > summary::before {
        content: "▾ ";
      }

      @media (max-width: 899px) {
        /* Comme #simpleApp : .app devient le conteneur de défilement en expert pour
           que la barre résultat sticky s'ancre dedans (overflow globaux cassent sinon). */
        body[data-ui-mode="expert"] .app {
          max-width: 680px;
          height: 100dvh;
          overflow-y: auto;
          -webkit-overflow-scrolling: touch;
        }
        /* .cockpit-expert (défini plus bas dans la source) écrase sinon le 1fr
           mobile générique de .cockpit → on le ré-empile explicitement ici. */
        .cockpit-expert {
          grid-template-columns: 1fr;
        }
        .cockpit-expert .heatmaps-zone,
        .cockpit-expert .metrics-zone {
          grid-template-columns: 1fr;
        }
      }