@media only screen and (max-width: 900px) {
  :root {
    --mobile-oc-collapsed-height: 38px;
    --mobile-compact-row-height: 58px;
    --mobile-middle-group-height: 120px;
  }

  html,
  body {
    height: 100%;
    margin: 0;
    overflow: hidden;
  }

  .grid-container {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 46% 22% 32%;
    width: 100% !important;
    max-width: 100% !important;
    height: calc(100vh - var(--mobile-oc-collapsed-height));
    margin: 0 0 var(--mobile-oc-collapsed-height) 0 !important;
    padding: 6px;
    gap: 6px;
    box-sizing: border-box;
    overflow: hidden;
  }

  .main-content {
    display: block !important;
    height: 100%;
    min-height: 0;
  }

  .left-section {
    width: 100% !important;
    height: 100%;
    min-height: 0;
    display: grid;
    grid-template-rows: 1fr 1fr;
    gap: 6px;
  }

  #candle-chart-container,
  #chart-container-00 {
    width: 100% !important;
    height: 100% !important;
    min-height: 0;
    box-sizing: border-box;
  }

  .right-section,
  #chart-container-01,
  #chart-container-02,
  #chart-container-03,
  #chart-container-04,
  #chart-container-05,
  #chart-container-06 {
    display: none !important;
  }

  /* Kennzahlen + mobiles Karussell (Gruppe <-> Positionstabelle) */
  .value-containers {
    display: grid !important;
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, var(--mobile-middle-group-height));
    width: 100% !important;
    max-width: 100% !important;
    height: 100%;
    min-height: 0;
    gap: 4px;
    box-sizing: border-box;
    overflow: hidden;
    align-items: start;
    align-content: start;
  }

  .left-value-section,
  .right-value-section {
    display: contents;
  }

  #value-container-01 {
    grid-column: 1 / -1;
    grid-row: 1;
    width: 100% !important;
    margin: 0;
    height: 40px;
    min-height: 40px;
    font-size: 9px;
    box-sizing: border-box;
    overflow: hidden;
    margin-bottom: 0 !important;
  }

  #value-container-01 .value-item {
    justify-content: flex-start;
    padding: 3px 2px 0;
  }

  #value-container-01 .value-label {
    font-size: 7px;
    line-height: 1;
    margin: 0;
  }

  #value-container-01 .value-data {
    font-size: 9px;
    line-height: 1;
    margin: 0;
  }

  .right-value-section {
    grid-column: 1 / -1;
    grid-row: 2;
    width: 100% !important;
    height: var(--mobile-middle-group-height);
    min-height: 0;
    display: grid !important;
    grid-template-rows: var(--mobile-compact-row-height) 56px;
    row-gap: 6px;
    margin: 0 !important;
    box-sizing: border-box;
    transition: transform 220ms ease;
    will-change: transform;
    align-self: start;
  }

  .greeks-compare-row {
    width: 100% !important;
    max-width: 100% !important;
    height: var(--mobile-compact-row-height);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    min-height: 0;
    margin: 0 !important;
    box-sizing: border-box;
  }

  #value-container-00 {
    width: 100% !important;
    height: var(--mobile-compact-row-height) !important;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    overflow: hidden;
    font-size: 10px;
    box-sizing: border-box;
  }

  #value-container-00 .value-item {
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1px;
    min-width: 0;
    gap: 1px;
  }

  #value-container-00 .value-label {
    font-size: 7px;
    line-height: 1;
    margin: 0;
  }

  #value-container-00 .value-data {
    font-size: 9px;
    line-height: 1;
    margin: 0;
  }

  #compare-choice-container {
    width: 100%;
    height: var(--mobile-compact-row-height);
    margin: 0;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    grid-template-rows: 1fr;
    align-items: stretch;
    gap: 1px;
    box-sizing: border-box;
    overflow: hidden;
  }

  #compare-choice-container .compare-option {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    font-size: 8px;
    line-height: 1;
    padding: 0 2px;
    white-space: nowrap;
  }

  #leg-display-container {
    grid-column: 1;
    grid-row: 1;
    width: 100%;
    height: 56px;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    box-sizing: border-box;
    overflow: hidden;
  }

  #display-option-container-00 {
    grid-column: 2;
    grid-row: 1;
    width: 100%;
    height: 56px;
    margin: 0;
    box-sizing: border-box;
    overflow: hidden;
  }

  .right-slider-section {
    width: 100% !important;
    max-width: 100% !important;
    height: 56px;
    min-height: 0;
    display: block;
    margin: 0 !important;
    box-sizing: border-box;
  }

  /* Desktop hat hier eine spezifischere 200px-Regel; mobil erzwingen wir volle Zeilenbreite. */
  .right-value-section .right-slider-section {
    width: 100% !important;
    height: 56px !important;
    display: block !important;
  }

  .option-containers {
    width: 100% !important;
    max-width: 100% !important;
    height: 100%;
    min-height: 0;
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 1fr;
    gap: 4px;
    align-items: stretch;
    margin: 0 !important;
    box-sizing: border-box;
  }

  .right-slider-section .option-containers {
    width: 100% !important;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  }

  #leg-display-container,
  #display-option-container-00 {
    min-width: 0;
    max-width: 100%;
    margin: 0 !important;
    box-sizing: border-box;
  }

  #leg-display-container .leg-option {
    min-width: 0;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #value-positions-table {
    grid-column: 1 / -1;
    grid-row: 2;
    width: 100% !important;
    height: var(--mobile-middle-group-height) !important;
    max-height: var(--mobile-middle-group-height) !important;
    margin: 0;
    box-sizing: border-box;
    overflow-x: hidden;
    overflow-y: hidden;
    transition: transform 220ms ease;
    will-change: transform;
    align-self: start;
  }

  #value-positions-table svg {
    width: 100% !important;
    min-width: 0;
    height: 100% !important;
    min-height: 0 !important;
    display: block;
  }

  .mobile-middle-dots {
    display: none;
  }

  .value-containers.mobile-middle-carousel-enabled {
    position: relative;
    overflow: hidden;
  }

  .value-containers.mobile-middle-carousel-enabled .right-value-section,
  .value-containers.mobile-middle-carousel-enabled #value-positions-table {
    z-index: 1;
  }

  .value-containers.mobile-middle-carousel-enabled .right-value-section {
    transform: translateX(0%);
  }

  .value-containers.mobile-middle-carousel-enabled #value-positions-table {
    transform: translateX(102%);
  }

  .value-containers.mobile-middle-carousel-enabled.mobile-middle-show-table .right-value-section {
    transform: translateX(-102%);
  }

  .value-containers.mobile-middle-carousel-enabled.mobile-middle-show-table #value-positions-table {
    transform: translateX(0%);
  }

  .value-containers.mobile-middle-carousel-enabled .mobile-middle-dots {
    position: absolute;
    left: 50%;
    bottom: 4px;
    transform: translateX(-50%);
    z-index: 3;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 2px 6px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(1px);
  }

  .mobile-middle-dot {
    width: 7px;
    height: 7px;
    border: 0;
    border-radius: 999px;
    padding: 0;
    background: rgba(100, 116, 139, 0.42);
    cursor: pointer;
  }

  .mobile-middle-dot.active {
    background: rgba(59, 130, 246, 0.88);
  }

  .slider-main-container {
    display: grid !important;
    grid-template-columns: 1fr;
    grid-template-rows: 48% 52%;
    width: 100%;
    height: 100%;
    min-height: 0;
    gap: 6px;
  }

  .left-slider-section,
  .right-settings-section {
    width: 100% !important;
    height: 100%;
    min-height: 0;
    min-width: 0;
  }

  .slider-container {
    display: grid;
    grid-template-rows: repeat(4, minmax(0, 1fr));
    row-gap: 2px;
    height: 100%;
    padding: 6px;
    box-sizing: border-box;
    overflow: hidden;
  }

  .slider-subcontainer {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 0;
    margin: 0;
  }

  .slider-subcontainer label {
    font-size: 10px;
    margin: 0;
  }

  .slider-subcontainer input[type="range"] {
    height: 14px;
  }

  .persistent-settings-panel {
    width: 100%;
    height: 100%;
    max-height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 8px;
    box-sizing: border-box;
  }

  .persistent-settings-panel .settings-group-title {
    font-size: 10px;
  }

  .persistent-settings-panel .checkbox-item {
    min-height: 20px;
    padding: 2px 0;
  }

  .persistent-settings-panel .checkbox-item label {
    font-size: 11px;
  }

  #modal-option-chain {
    display: block !important;
    left: 6px;
    width: calc(100vw - 12px);
    max-width: calc(100vw - 12px);
    transform: translate(0, 0);
  }

  #modal-option-chain.minimized {
    transform: translate(0, calc(100% - 30px));
  }

  .modal-content-option-chain {
    padding-left: 8px;
    padding-right: 8px;
    padding-bottom: 8px;
  }
}