/* sID Anatomy Lab — landscape start: tall side buttons + center canvas */

/* Viewer return — hide home flash until atlas spread opens */
html.cas-boot-return-atlas #cas-page-b-home,
html.cas-boot-return-atlas #cas-start-a-home,
html.cas-boot-return-atlas #viewatlas-portal {
    visibility: hidden !important;
}

/* ── Tall chrome: equal side columns, canvas center ── */

body.cas-no-model #cas-top-bar {
    position: fixed;
    top: calc(var(--cas-bar-pad) + var(--cas-safe-top));
    right: calc(var(--cas-bar-pad) + var(--cas-safe-right));
    bottom: calc(var(--cas-bar-pad) + var(--cas-safe-bottom));
    left: calc(var(--cas-bar-pad) + var(--cas-safe-left));
    z-index: 200;
    display: flex;
    flex-direction: row;
    align-items: stretch;
    gap: var(--cas-bar-gap);
    min-height: 0;
    height: auto;
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    pointer-events: none;
}

body.cas-no-model .cas-va-menu-picker,
body.cas-no-model .cas-top-auth-slot {
    flex: 1 1 0;
    min-width: 0;
    max-width: none;
    width: auto;
    display: flex;
    align-items: stretch;
    pointer-events: auto;
    position: relative;
    z-index: 202;
    overflow: visible;
}

body.cas-no-model .cas-va-menu-picker {
    flex-direction: column;
}

body.cas-no-model .cas-start-sid-panel-inner,
body.cas-no-model .cas-page-a,
body.cas-no-model .cas-page-a-atlas-entry {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    position: relative;
    display: flex;
    align-items: stretch;
    justify-content: stretch;
    padding: 0;
    box-sizing: border-box;
    overflow: visible;
}

body.cas-no-model #cas-page-a-atlas-myology-btn.cas-start-atlas-entry-preview.bar-btn-top-portal,
body.cas-no-model .cas-page-b-atlas-placeholder.bar-btn-top-portal,
body.cas-no-model .cas-page-b-entry.bar-btn-top-portal,
body.cas-no-model .cas-page-b-notebook.bar-btn-top-portal {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(8px, 2vh, 16px) clamp(10px, 2vw, 16px);
    box-sizing: border-box;
    overflow: visible;
}

body.cas-no-model .cas-start-preview-panel {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    position: relative;
    display: flex;
    align-items: stretch;
    justify-content: stretch;
    padding: 0;
    box-sizing: border-box;
    pointer-events: none;
    cursor: default;
    overflow: visible;
}

body.cas-no-model.cas-start-picker-open .cas-start-preview-panel {
    pointer-events: none;
}

/* ── B lap — home split + notebook ── */

body.cas-no-model .cas-page-b {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    display: flex;
    flex-direction: column;
    pointer-events: auto;
    position: relative;
}

body.cas-no-model .cas-page-b-home {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    gap: var(--cas-bar-gap);
    min-height: 0;
    height: 100%;
    width: 100%;
}

body.cas-no-model .cas-page-b-home[hidden] {
    display: none !important;
}

body.cas-no-model .cas-page-b-entry {
    flex: 1 1 0;
    min-height: 0;
    height: auto;
    cursor: default;
    text-align: center;
    overflow: hidden;
}

body.cas-no-model .cas-page-b-entry-label {
    display: block;
    margin: 0;
    font-family: var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    font-size: var(--cas-start-brand-font-size);
    font-weight: var(--va-btn-text-weight);
    line-height: 1.2;
    letter-spacing: var(--va-btn-text-spacing);
}

body.cas-no-model .cas-page-b-entry-label-atlas {
    display: inline-block;
    font-weight: 800;
    letter-spacing: -0.03em;
    filter: drop-shadow(var(--cas-start-b-home-text-shadow));
}

body.cas-no-model .cas-page-b-entry-label-atlas .cas-start-b-logo-s,
body.cas-no-model .cas-page-b-entry-label-atlas .cas-start-b-logo-id,
body.cas-no-model .cas-page-b-entry-label-atlas .cas-start-b-label-caps {
    background: linear-gradient(
        180deg,
        var(--cas-start-b-home-text-top) 0%,
        var(--cas-start-b-home-text-mid) 52%,
        var(--cas-start-b-home-text-bottom) 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

body.cas-no-model .cas-page-b-home .cas-start-b-logo-s,
body.cas-no-model .cas-page-b-home .cas-start-b-logo-id {
    display: inline-block;
    font-size: calc(var(--cas-start-a-logo-font-size) * var(--cas-start-b-home-text-scale));
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 1;
    vertical-align: baseline;
}

body.cas-no-model .cas-page-b-home .cas-start-b-logo-id {
    margin-left: -0.14em;
}

body.cas-no-model .cas-page-b-home .cas-start-b-label-caps {
    font-size: calc(var(--cas-start-b-cap-match-font-size) * var(--cas-start-b-home-text-scale));
    font-weight: var(--va-btn-text-weight);
    letter-spacing: var(--va-btn-text-spacing);
    line-height: 1.2;
}

/* Notebook zone — book cover on B lap home */

body.cas-no-model .cas-page-b-cover {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: space-between;
    padding: clamp(10px, 1.8vh, 16px) clamp(10px, 2vw, 14px);
    box-sizing: border-box;
}

body.cas-no-model .cas-page-b-cover-user {
    display: block;
    margin: 0;
    flex: 0 0 auto;
    font-family: var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    font-size: var(--cas-start-picker-caption-detail-font-size);
    font-weight: 600;
    line-height: 1.2;
    color: var(--va-text-muted);
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

body.cas-no-model .cas-page-b-cover-title {
    display: flex;
    flex: 1 1 auto;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: clamp(4px, 0.8vh, 10px) clamp(6px, 1.2vw, 10px);
    text-align: center;
}

body.cas-no-model .cas-page-b-cover-title .cas-start-b-label-caps {
    display: inline-block;
    font-family: var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    font-weight: 800;
    letter-spacing: -0.03em;
    filter: drop-shadow(var(--cas-start-b-home-text-shadow));
    background: linear-gradient(
        180deg,
        var(--cas-start-b-home-text-top) 0%,
        var(--cas-start-b-home-text-mid) 52%,
        var(--cas-start-b-home-text-bottom) 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

body.cas-no-model .cas-page-b-cover-term {
    display: block;
    margin: 0;
    flex: 0 0 auto;
    font-family: var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    font-size: var(--cas-start-picker-caption-detail-font-size);
    line-height: 1.3;
    color: #aab4c6;
    text-align: center;
}

/* ── Atlas entry spread (A + B) — after sID 3D atlas tap ── */

body.cas-no-model .cas-page-a-atlas-entry {
    pointer-events: auto;
}

body.cas-no-model .cas-page-a-atlas-entry[hidden] {
    display: none !important;
}

body.cas-no-model .cas-start-atlas-entry-preview.bar-btn-top-portal,
body.cas-no-model .cas-start-atlas-entry-preview.bar-btn-top-portal {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    max-height: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0;
    cursor: default;
    box-sizing: border-box;
}

body.cas-no-model .cas-start-atlas-entry-preview .cas-start-preview-caption,
body.cas-no-model .cas-start-atlas-entry-preview .cas-start-preview-caption {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(2px, 0.35vh, 5px);
    line-height: 1.15;
    flex-shrink: 0;
    margin: 0 0 clamp(2px, 0.35vh, 5px);
    padding: 0 clamp(8px, 2vw, 14px);
    text-align: center;
    pointer-events: none;
    user-select: none;
}

body.cas-no-model .cas-start-atlas-entry-title {
    display: block;
    font-family: var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    font-size: var(--cas-start-brand-font-size);
    font-weight: var(--va-btn-text-weight);
    letter-spacing: var(--va-btn-text-spacing);
}

body.cas-no-model .cas-start-atlas-entry-sub {
    display: block;
    font-family: var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    font-size: var(--cas-start-picker-caption-detail-font-size);
    font-weight: var(--va-btn-text-weight);
    letter-spacing: var(--va-btn-text-spacing);
    line-height: 1.3;
}

body.cas-no-model .cas-start-atlas-entry-caption--dissected .cas-start-atlas-entry-sub {
    color: #aab4c6;
}

body.cas-no-model.cas-start-atlas-entry .cas-page-b {
    position: relative;
}

body.cas-no-model #cas-page-a-atlas-myology-btn.cas-start-atlas-entry-preview.bar-btn-top-portal {
    position: absolute;
    inset: 0;
    z-index: 1;
    flex-direction: column;
    justify-content: center;
    margin: 0;
    cursor: default;
}

body.cas-no-model #cas-page-b-atlas-placeholder.cas-page-b-atlas-placeholder.bar-btn-top-portal {
    position: absolute;
    inset: 0;
    z-index: 1;
    flex-direction: column;
    justify-content: center;
    margin: 0;
    cursor: default;
    pointer-events: none;
    background: transparent !important;
    border: 1px solid var(--va-chrome-btn-border) !important;
    box-shadow: none !important;
}

body.cas-no-model #cas-page-b-atlas-placeholder .cas-start-hero-in-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 4px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    padding: 0;
    pointer-events: none;
}

body.cas-no-model #cas-page-b-atlas-placeholder .cas-start-hero-in-btn .cas-start-va-logo {
    font-size: var(--cas-start-a-logo-font-size);
    line-height: 1;
    margin-bottom: 4px;
}

body.cas-no-model #cas-page-b-atlas-placeholder .cas-start-hero-in-btn .cas-start-brand-name {
    font-size: var(--cas-start-brand-font-size);
    max-width: none;
}

body.cas-no-model #cas-page-b-atlas-placeholder .cas-start-hero-in-btn .cas-start-tagline {
    max-width: 36ch;
    text-align: center;
}

body.cas-no-model .cas-start-atlas-entry-img {
    display: block;
    flex: 0 1 auto;
    width: auto;
    height: auto;
    min-height: 0;
    max-height: min(78vh, calc(100dvh - 8rem));
    max-width: 112%;
    object-fit: contain;
    object-position: center center;
    transform-origin: center center;
    transform: translateX(var(--cas-start-preview-shift-front)) translateY(var(--cas-start-preview-lift-main)) scale(var(--cas-start-preview-size-scale));
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

body.cas-no-model .cas-page-b-atlas-entry {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    position: relative;
    pointer-events: auto;
}

body.cas-no-model .cas-page-b-atlas-entry[hidden] {
    display: none !important;
}

body.cas-no-model.cas-start-atlas-entry-a .cas-start-a-home,
body.cas-no-model.cas-start-atlas-entry-b .cas-page-b-home,
body.cas-no-model.cas-start-atlas-entry .cas-start-a-home,
body.cas-no-model.cas-start-atlas-entry .cas-page-b-home {
    display: none !important;
}

body.cas-no-model.cas-start-atlas-entry .cas-page-a-atlas-entry,
body.cas-no-model.cas-start-atlas-entry .cas-page-b-atlas-entry {
    display: flex !important;
}

body.cas-no-model.cas-start-picker-open .cas-start-preview-panel {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    display: flex !important;
    padding: 0;
    position: relative;
    pointer-events: auto;
}

body.cas-no-model .cas-start-preview-panel[hidden] {
    display: none !important;
}

body.cas-no-model .cas-page-b-notebook {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: clamp(8px, 1.5vh, 12px);
    padding: clamp(12px, 2vh, 20px);
    text-align: center;
    box-sizing: border-box;
    pointer-events: auto;
}

body.cas-no-model .cas-page-b-notebook[hidden] {
    display: none !important;
}

body.cas-no-model .cas-page-b-notebook-kicker {
    margin: 0;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: lowercase;
    color: var(--va-accent-chapter);
}

body.cas-no-model .cas-page-b-notebook-title {
    margin: 0;
    font-size: clamp(18px, 2.6vw, 22px);
    font-weight: 600;
    text-transform: lowercase;
    color: var(--va-text-primary);
}

body.cas-no-model .cas-page-b-notebook-body {
    margin: 0;
    max-width: 30ch;
    font-size: clamp(12px, 1.6vw, 14px);
    line-height: 1.45;
    color: #c5cedd;
}

body.cas-no-model .cas-page-b-notebook-soon {
    margin: 0;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: lowercase;
    color: #aab4c6;
}

body.cas-no-model .cas-page-b-notebook-back {
    margin-top: clamp(4px, 1vh, 8px);
    min-width: 9rem;
}

/* Picker — B1: anterior/posterior két kép; B2: left/right függőleges; B3: kész */

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 #cas-start-preview-picker {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex !important;
    flex-direction: column;
    pointer-events: auto;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 #cas-start-picker-side-zone {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex !important;
    flex-direction: column;
    pointer-events: auto;
    background: transparent;
    border: none;
    box-shadow: none;
}

body.cas-no-model.cas-start-picker-open:not(.cas-start-preview-ready) #cas-start-picker-ready-zone {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

body.cas-no-model.cas-start-picker-open:not(.cas-start-picker-step-b2) #cas-start-picker-side-zone {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

body.cas-no-model.cas-start-picker-open:not(.cas-start-picker-step-b1) #cas-start-preview-picker {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

body.cas-no-model.cas-start-picker-open:not(.cas-start-preview-ready) .cas-start-preview-orient-shell,
body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-picker-b2-shell {
    position: relative;
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    box-sizing: border-box;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 .cas-start-picker-b1-head,
body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-picker-b2-head {
    flex: 0 0 auto;
    width: 100%;
    padding: clamp(10px, 2vh, 18px) clamp(10px, 2vw, 16px) clamp(4px, 0.8vh, 8px);
    box-sizing: border-box;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 .cas-start-picker-b1-head .cas-start-preview-caption,
body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-picker-b2-head .cas-start-preview-caption {
    margin: 0;
}

/* Shared standing portrait + frame size (B1 and B2) */
body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 .cas-start-picker-b1-pair,
body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-picker-b2-aspects {
    --cas-start-picker-img-h: calc(min(78vh, calc(100dvh - 8rem)) * var(--cas-start-preview-size-scale));
    --cas-start-picker-img-w: calc(var(--cas-start-picker-img-h) * 0.38);
    --cas-start-picker-frame-pad-x: clamp(8px, 1.2vw, 14px);
    --cas-start-picker-frame-pad-y: clamp(8px, 1.2vh, 12px);
    --cas-start-picker-frame-w: calc(var(--cas-start-picker-img-w) + 2 * var(--cas-start-picker-frame-pad-x) + 2px);
    --cas-start-picker-frame-h: calc(var(--cas-start-picker-img-h) + 2 * var(--cas-start-picker-frame-pad-y) + 2px);
    /* B1 gomb↔keret és B2 gomb↔keret — ugyanaz */
    --cas-start-picker-btn-frame-gap: clamp(8px, 1.4vh, 14px);
}

/* B1 — két oszlop: anterior | posterior
   Figura-magasság; négyzet PNG oldalsó fekete sávja levágva. */
body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 .cas-start-picker-b1-pair {
    position: relative;
    flex: 1 1 auto;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: clamp(6px, 1.2vw, 16px);
    width: 100%;
    min-height: 0;
    margin: 0;
    padding: 0 clamp(4px, 1vw, 12px) clamp(10px, 2vh, 18px);
    box-sizing: border-box;
    overflow: hidden;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 .cas-start-picker-b1-col {
    position: relative;
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--cas-start-picker-btn-frame-gap);
    width: auto;
    min-width: 0;
    min-height: 0;
    cursor: default;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 .cas-start-picker-b1-col .cas-start-aspect-label--fb {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    transform: none;
    flex: 0 0 auto;
    z-index: 2;
    box-sizing: border-box;
    /* Viewer chrome button height */
    height: var(--cas-bar-btn-h);
    min-height: var(--cas-bar-btn-h);
    max-height: var(--cas-bar-btn-h);
    padding-top: 0;
    padding-bottom: 0;
    padding-left: calc(var(--cas-start-aspect-chip-pad-x) * 1.5);
    padding-right: calc(var(--cas-start-aspect-chip-pad-x) * 1.5);
    /* Same outer width as the image frame below */
    width: var(--cas-start-picker-frame-w);
    min-width: var(--cas-start-picker-frame-w);
    max-width: var(--cas-start-picker-frame-w);
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 .cas-start-picker-b1-img-slot {
    position: relative;
    flex: 0 0 auto;
    width: var(--cas-start-picker-img-w);
    height: var(--cas-start-picker-img-h);
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-sizing: content-box;
    /* Frame only around the image — buttons stay outside */
    padding: var(--cas-start-picker-frame-pad-y) var(--cas-start-picker-frame-pad-x);
    border: 1px solid var(--va-chrome-btn-border);
    border-radius: var(--va-radius-sm);
    background: transparent;
    box-shadow: none;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 .cas-start-picker-b1-model-img {
    position: relative;
    left: auto;
    top: auto;
    z-index: 1;
    height: var(--cas-start-picker-img-h);
    width: auto;
    max-width: none;
    max-height: none;
    object-fit: contain;
    object-position: center center;
    transform: none;
    transform-origin: center center;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

/* B2 — ugyanaz a kép + keret méret, mint B1; gombok a kereten kívül (flex gap = B1) */
body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-picker-b2-aspects {
    position: relative;
    flex: 1 1 auto;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: var(--cas-start-picker-btn-frame-gap);
    width: 100%;
    min-height: 0;
    margin: 0;
    padding: 0 clamp(4px, 1vw, 12px) clamp(10px, 2vh, 18px);
    box-sizing: border-box;
    overflow: hidden;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-picker-b2-img-frame {
    position: relative;
    flex: 0 0 auto;
    left: auto;
    top: auto;
    z-index: 1;
    width: var(--cas-start-picker-img-w);
    height: var(--cas-start-picker-img-h);
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-sizing: content-box;
    padding: var(--cas-start-picker-frame-pad-y) var(--cas-start-picker-frame-pad-x);
    border: 1px solid var(--va-chrome-btn-border);
    border-radius: var(--va-radius-sm);
    background: transparent;
    box-shadow: none;
    transform: none;
    pointer-events: none;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-picker-b2-model-img {
    position: relative;
    left: auto;
    top: auto;
    z-index: 1;
    display: block;
    flex: none;
    height: var(--cas-start-picker-img-h);
    width: auto;
    max-width: none;
    max-height: none;
    object-fit: contain;
    object-position: center center;
    transform: none;
    transform-origin: center center;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

body.cas-no-model .cas-start-preview-picker {
    pointer-events: auto;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    min-height: 0;
    gap: 0;
    box-sizing: border-box;
}

body.cas-no-model.cas-start-picker-open .cas-start-preview-caption {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(2px, 0.35vh, 5px);
    line-height: 1.15;
}

body.cas-no-model.cas-start-picker-open .cas-start-preview-caption-picker-detail {
    font-size: var(--cas-start-picker-caption-detail-font-size);
    color: var(--cas-start-aspect-label-color);
}

body.cas-no-model .cas-start-preview-caption-line {
    display: block;
}

body.cas-no-model .cas-start-preview-caption {
    display: block;
    flex-shrink: 0;
    margin: 0 0 clamp(2px, 0.35vh, 5px);
    padding: 0 clamp(8px, 2vw, 14px);
    font: var(--va-btn-text-weight) var(--cas-start-preview-caption-font-size)/1.2 var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    letter-spacing: var(--va-btn-text-spacing);
    text-align: center;
    pointer-events: none;
    user-select: none;
}

body.cas-no-model.cas-start-picker-open .cas-start-preview-main {
    position: absolute;
    inset: 0;
}

body.cas-no-model .cas-start-preview-img-btn {
    position: relative;
    z-index: 1;
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-width: 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0;
    cursor: default;
    overflow: hidden;
    box-sizing: border-box;
}

body.cas-no-model .cas-start-preview-orient-shell {
    display: contents;
}

body.cas-no-model.cas-start-picker-open .cas-start-preview-orient-shell {
    position: relative;
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    --cas-start-aspect-front-top: 16.5%;
    --cas-start-aspect-back-bottom: 9%;
    --cas-start-aspect-side-inset: 18.5%;
    --cas-start-aspect-side-top: 23%;
    --cas-start-aspect-side-bottom: 23%;
    --cas-start-aspect-span-x: 26%;
}

body.cas-no-model.cas-start-picker-open .cas-start-preview-img-btn {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    flex: none;
    z-index: 2;
    overflow: visible;
    cursor: default;
}

body.cas-no-model.cas-start-picker-open .cas-start-preview-img-btn::before {
    content: none;
}

body.cas-no-model .cas-start-aspect-label {
    display: none;
}

body.cas-no-model.cas-start-picker-open .cas-start-aspect-label {
    position: absolute;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    margin: 0;
    padding: var(--cas-start-aspect-chip-pad-y) var(--cas-start-aspect-chip-pad-x);
    min-height: 0;
    appearance: none;
    -webkit-appearance: none;
    border: var(--cas-start-aspect-chip-border);
    border-radius: var(--cas-start-aspect-chip-radius);
    background: var(--cas-start-aspect-chip-bg);
    backdrop-filter: blur(var(--va-chrome-btn-blur)) saturate(115%);
    -webkit-backdrop-filter: blur(var(--va-chrome-btn-blur)) saturate(115%);
    box-shadow: none;
    color: var(--va-text-primary);
    font: var(--va-btn-text-weight) var(--cas-start-aspect-label-font-size)/1.2 var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    letter-spacing: var(--va-btn-text-spacing);
    text-align: center;
    white-space: nowrap;
    text-transform: lowercase;
    pointer-events: auto;
    cursor: default;
    transition: background var(--va-transition), border-color var(--va-transition);
}

body.cas-no-model.cas-start-picker-open .cas-start-aspect-label::before {
    content: none;
    display: none;
}

body.cas-no-model.cas-start-picker-open .cas-start-aspect-label.is-selected,
body.cas-no-model.cas-start-picker-open .cas-start-aspect-label[aria-pressed="true"] {
    border: var(--cas-start-aspect-chip-border-active);
    background: var(--cas-start-aspect-chip-bg);
    filter: none;
}

body.cas-no-model.cas-start-picker-open .cas-start-aspect-label.ripple:active {
    background: var(--va-chrome-btn-bg-active);
    border-color: var(--va-chrome-btn-border-active);
}

body.cas-no-model.cas-start-picker-open .cas-start-aspect-label.is-selected.ripple:active,
body.cas-no-model.cas-start-picker-open .cas-start-aspect-label[aria-pressed="true"].ripple:active {
    border: var(--cas-start-aspect-chip-border-active);
    background: var(--va-chrome-btn-bg-active);
}

body.cas-no-model.cas-start-picker-open .cas-start-aspect-label:focus {
    outline: none;
}

body.cas-no-model.cas-start-picker-open .cas-start-aspect-label:focus-visible {
    outline: 2px solid var(--va-chrome-btn-border);
    outline-offset: 2px;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 .cas-start-aspect-label[data-cas-aspect="front"],
body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b1 .cas-start-aspect-label[data-cas-aspect="back"] {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    width: max-content;
    max-width: 100%;
    transform: none;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-aspect-label--side[data-cas-aspect="left"],
body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-aspect-label--side[data-cas-aspect="right"] {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    flex: 0 0 auto;
    z-index: 2;
    /* Height matches image frame outer height */
    height: var(--cas-start-picker-frame-h);
    /* Width = viewer chrome button height */
    width: var(--cas-bar-btn-h);
    min-width: var(--cas-bar-btn-h);
    max-width: var(--cas-bar-btn-h);
    padding: clamp(10px, 1.6vh, 16px) 0;
    box-sizing: border-box;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.06em;
    white-space: nowrap;
    align-items: center;
    justify-content: center;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-aspect-label--side[data-cas-aspect="left"] {
    transform: rotate(180deg);
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-step-b2 .cas-start-aspect-label--side[data-cas-aspect="right"] {
    transform: none;
}

body.cas-no-model {
    /* Skull sagittal midline → preview panel vertical midline (front / back) */
    --cas-start-side-w: calc(
        (100vw - 2 * var(--cas-bar-pad) - var(--cas-safe-left) - var(--cas-safe-right) - var(--cas-bar-gap)) / 2
    );
    --cas-start-preview-shift-front: 0%;
    --cas-start-preview-shift-back: 6%;
    --cas-start-preview-size-scale: 0.92;
    --cas-start-preview-lift-main: 0%;
    --cas-start-brand-font-size: clamp(20px, 3.2vw, 28px);
    --cas-start-preview-caption-font-size: clamp(16px, 2.5vw, 22px);
    --cas-start-aspect-label-font-size: clamp(14px, 2.15vw, 19px);
    --cas-start-aspect-label-color: #aab4c6;
    --cas-start-picker-caption-detail-font-size: clamp(11px, 1.75vw, 15px);
    /* Hard offset — fejléc passzív: menta + türkiz; aktív/gomb: menta + bordó; irány gomb alap: halvány menta + halvány bordó */
    --cas-start-mint-text: var(--va-accent-mint);
    --cas-start-mint-text-aspect-idle: color-mix(in srgb, var(--va-accent-mint) 62%, #aab4c6);
    --cas-start-mint-text-aspect-b2: color-mix(in srgb, var(--va-accent-mint) 72%, #cce8df);
    --cas-start-text-shadow-mint-label: 2px 3px 0 rgba(38, 118, 138, 0.98);
    --cas-start-text-shadow-mint-action: 2px 3px 0 rgba(48, 10, 26, 0.98);
    --cas-start-text-shadow-mint-aspect-idle: 2px 3px 0 rgba(72, 28, 42, 0.52);
    --cas-start-text-shadow-intact-action: 2px 3px 0 rgba(40, 16, 38, 0.96);
    --cas-start-b-atlas-text-light: #72c4ad;
    --cas-start-b-atlas-text-deep: #458f76;
    --cas-start-b-notebook-text-light: #f0b06a;
    --cas-start-b-notebook-text-deep: #c47e34;
    /* B lap home — két fő felirat: semleges fehér, finom függőleges árnyalat */
    --cas-start-b-home-text-top: #ffffff;
    --cas-start-b-home-text-mid: #f6f8fc;
    --cas-start-b-home-text-bottom: #e8ecf2;
    --cas-start-b-home-text-shadow: 1px 2px 0 rgba(24, 28, 36, 0.42);
    /* Irányválasztó chip — chrome kék (mint a többi gomb) */
    --cas-start-aspect-chip-bg: var(--va-chrome-btn-bg);
    --cas-start-aspect-chip-border: 1px solid var(--va-chrome-btn-border);
    --cas-start-aspect-chip-border-active: 1px solid var(--va-accent-mint);
    --cas-start-aspect-chip-radius: var(--va-radius-sm);
    --cas-start-aspect-chip-pad-y: clamp(3px, 0.55vh, 6px);
    --cas-start-aspect-chip-pad-x: clamp(8px, 1.4vw, 12px);
    --cas-start-a-logo-font-size: clamp(48px, 13vh, 96px);
    /* Nagybetű magasság ≈ A-lap logó kis kék „s” x-magassága (Segoe UI 800) */
    --cas-start-b-cap-match-font-size: calc(var(--cas-start-a-logo-font-size) * 0.76);
    --cas-start-b-home-text-scale: 0.75;
    --cas-start-open-label-font-size: clamp(26px, 4.4vw, 38px);
    /* Landscape lab viewer frame (2880×1800 tablet) — per-stand capture later */
    --cas-start-open-thumb-aspect-w: 8;
    --cas-start-open-thumb-aspect-h: 5;
}

/* Semleges fehér címsor — modell- + irányválasztó lapok */
body.cas-no-model .cas-start-atlas-entry-title,
body.cas-no-model .cas-start-specimen-title,
body.cas-no-model .cas-start-preview-caption-picker-title,
body.cas-no-model .cas-start-ready-title {
    display: inline-block;
    max-width: 100%;
    filter: drop-shadow(var(--cas-start-b-home-text-shadow));
    background: linear-gradient(
        180deg,
        var(--cas-start-b-home-text-top) 0%,
        var(--cas-start-b-home-text-mid) 52%,
        var(--cas-start-b-home-text-bottom) 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: none;
}

body.cas-no-model .cas-start-preview-img-btn .cas-start-preview-img {
    display: block;
    flex: 0 1 auto;
    width: auto;
    height: auto;
    max-height: min(78vh, calc(100dvh - 8rem));
    max-width: 112%;
    object-fit: contain;
    object-position: center center;
    transform-origin: center center;
    transform: translateX(var(--cas-start-preview-shift-front)) scale(var(--cas-start-preview-size-scale));
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

body.cas-no-model .cas-start-preview-img-btn .cas-start-preview-img[data-cas-preview="back"] {
    transform: translateX(var(--cas-start-preview-shift-back)) scale(var(--cas-start-preview-size-scale));
}

/* Left sID column — A lap: álló gomb keret (canvas), tartalom belül rétegekben */

body.cas-no-model .cas-start-sid-panel-inner {
    position: relative;
    box-sizing: border-box;
    min-height: 0;
    height: 100%;
    width: 100%;
}

body.cas-no-model .ripple {
    transition: none !important;
}

body.cas-no-model .bar-btn.ripple {
    transition: none !important;
}

body.cas-no-model #cas-page-a-atlas-myology-btn.cas-start-atlas-entry-preview.bar-btn-top-portal {
    position: absolute;
    inset: 0;
}

body.cas-no-model #cas-start-a-panel.cas-start-a-panel.bar-btn-top-portal {
    position: absolute;
    inset: 0;
    z-index: 1;
    width: 100%;
    height: 100%;
    min-height: 0;
    margin: 0;
    padding: 0;
    display: block;
    overflow: hidden;
    box-sizing: border-box;
}

body.cas-no-model #cas-start-a-panel .cas-start-a-panel-layer {
    position: absolute;
    inset: 0;
    box-sizing: border-box;
    min-width: 0;
    min-height: 0;
    margin: 0;
}

body.cas-no-model #cas-start-a-panel .cas-start-a-panel-layer[hidden] {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

/* Picker / specimen — hero gomb teljesen rejtve (display:flex felülírás ellen) */
body.cas-no-model.cas-start-picker-open #viewatlas-portal,
body.cas-no-model.cas-start-picker-open #viewatlas-portal.cas-start-sid-menu-btn {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

body.cas-no-model.cas-start-picker-open #cas-start-a-panel.cas-start-a-panel {
    overflow: hidden;
}

body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn,
body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn:hover,
body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn.ripple:hover,
body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn.ripple:active,
body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn.is-picker-open,
body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn.is-picker-open.ripple:active {
    z-index: 1;
    width: 100%;
    height: 100%;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: clamp(8px, 2vh, 16px) clamp(10px, 2vw, 16px);
    appearance: none;
    -webkit-appearance: none;
    background: transparent !important;
    background-image: none !important;
    border: none !important;
    box-shadow: none !important;
    cursor: default;
    position: relative;
}

/*
 * Menu open: keep button as flex (grid on <button> jumps on hover).
 * Pin brand block to the vertical center of the lower half.
 */
body.cas-no-model #viewatlas-portal.is-picker-open .cas-start-hero-in-btn {
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    bottom: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 4px;
    box-sizing: border-box;
    padding: 0 clamp(10px, 2vw, 16px);
    margin: 0;
    pointer-events: none;
}

body.cas-no-model #cas-start-a-panel:has(#viewatlas-portal.is-picker-open),
body.cas-no-model #cas-start-a-panel:has(#viewatlas-portal.ripple:active) {
    background: var(--va-chrome-btn-bg) !important;
    border-color: var(--va-chrome-btn-border) !important;
}

body.cas-no-model #cas-start-specimen-card.cas-start-specimen-card {
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-sizing: border-box;
    padding: 0 clamp(14px, 2.8vw, 22px) clamp(14px, 2.5vh, 22px);
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    cursor: default;
    pointer-events: auto;
    user-select: text;
    text-align: center;
}

body.cas-no-model .cas-start-specimen-head {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(2px, 0.35vh, 5px);
    flex-shrink: 0;
    width: 100%;
    margin: 0;
    line-height: 1.15;
}

body.cas-no-model .cas-start-specimen-title {
    margin: 0;
    padding: 0 clamp(8px, 2vw, 14px);
    font: var(--va-btn-text-weight) var(--cas-start-preview-caption-font-size)/1.2 var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    letter-spacing: var(--va-btn-text-spacing);
    text-align: center;
}

body.cas-no-model .cas-start-specimen-sub {
    margin: 0;
    padding: 0 clamp(8px, 2vw, 14px);
    font-family: var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    font-size: var(--cas-start-picker-caption-detail-font-size);
    font-weight: var(--va-btn-text-weight);
    letter-spacing: var(--va-btn-text-spacing);
    line-height: 1.15;
    text-align: center;
    color: var(--cas-start-aspect-label-color);
}

body.cas-no-model .cas-start-specimen-summary {
    width: 100%;
    margin: clamp(10px, 1.6vh, 16px) 0 0;
    padding: 0;
    font-family: var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    font-size: clamp(12px, 1.7vw, 14px);
    font-weight: 500;
    letter-spacing: 0.01em;
    line-height: 1.5;
    text-align: justify;
    color: #c5cdd9;
}

/* B lap — irányválasztó canvas (preview + kész zóna) */

body.cas-no-model #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal {
    position: absolute;
    inset: 0;
    z-index: 1;
    width: 100%;
    height: 100%;
    min-height: 0;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-sizing: border-box;
}

body.cas-no-model #cas-start-b-panel.cas-start-b-panel--ready {
    border-color: var(--va-chrome-btn-border) !important;
}

body.cas-no-model #cas-start-b-panel .cas-start-b-panel-layer,
body.cas-no-model #cas-start-b-panel #cas-start-picker-ready-zone.cas-start-picker-ready-zone,
body.cas-no-model #cas-start-b-panel #cas-start-picker-side-zone.cas-start-picker-side-zone,
body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger.cas-start-preview-img-btn,
body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger.cas-start-preview-img-btn:hover,
body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger.cas-start-preview-img-btn.ripple:hover,
body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger.cas-start-preview-img-btn.ripple:active {
    background: transparent !important;
    background-image: none !important;
    border: none !important;
    box-shadow: none !important;
}

body.cas-no-model #cas-start-b-panel .cas-start-preview-picker,
body.cas-no-model #cas-start-b-panel .cas-start-preview-orient-shell,
body.cas-no-model #cas-start-b-panel .cas-start-preview-main {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

body.cas-no-model.cas-start-preview-ready .cas-start-preview-picker,
body.cas-no-model.cas-start-preview-ready #cas-start-preview-picker,
body.cas-no-model.cas-start-preview-ready #cas-start-picker-side-zone {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

body.cas-no-model.cas-start-preview-ready #cas-start-preview-picker[hidden],
body.cas-no-model.cas-start-preview-ready #cas-start-picker-side-zone[hidden] {
    display: none !important;
}

/* B3 lap — viewer megnyitás (irány kész): fejléc + thumb + open viewer */

body.cas-no-model.cas-start-preview-ready #cas-start-picker-ready-zone.cas-start-picker-ready-zone {
    position: absolute;
    inset: 0;
    z-index: 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    box-sizing: border-box;
    padding: 0 clamp(14px, 2.8vw, 22px);
    overflow: hidden;
    border: none;
    background: transparent;
}

body.cas-no-model .cas-start-picker-ready-zone[hidden],
body.cas-no-model .cas-start-picker-side-zone[hidden] {
    display: none !important;
}

body.cas-no-model .cas-start-ready-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1 1 auto;
    width: 100%;
    min-height: 0;
    height: 100%;
}

body.cas-no-model .cas-start-ready-head {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(2px, 0.35vh, 5px);
    flex-shrink: 0;
    width: 100%;
    margin: 0 0 clamp(2px, 0.35vh, 5px);
    line-height: 1.15;
}

body.cas-no-model .cas-start-ready-title {
    margin: 0;
    padding: 0 clamp(8px, 2vw, 14px);
    font: var(--va-btn-text-weight) var(--cas-start-preview-caption-font-size)/1.2 var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    letter-spacing: var(--va-btn-text-spacing);
    text-align: center;
}

body.cas-no-model .cas-start-ready-detail {
    margin: 0;
    padding: 0 clamp(8px, 2vw, 14px);
    font-family: var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    font-size: var(--cas-start-picker-caption-detail-font-size);
    font-weight: var(--va-btn-text-weight);
    letter-spacing: var(--va-btn-text-spacing);
    line-height: 1.15;
    text-align: center;
    text-transform: lowercase;
    color: var(--cas-start-aspect-label-color);
}

body.cas-no-model .cas-start-ready-thumb-zone {
    flex: 0 0 auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    width: 100%;
    margin: 0;
    padding: 0;
}

body.cas-no-model .cas-start-open-viewer-thumb {
    display: block;
    flex: 0 0 auto;
    width: min(100%, calc(min(78vh, calc(100dvh - 8rem)) * var(--cas-start-open-thumb-aspect-w) / var(--cas-start-open-thumb-aspect-h)));
    max-width: 112%;
    height: auto;
    max-height: min(78vh, calc(100dvh - 8rem));
    aspect-ratio: var(--cas-start-open-thumb-aspect-w) / var(--cas-start-open-thumb-aspect-h);
    margin: 0;
    padding: 0;
    border: 1px solid var(--va-chrome-btn-border);
    border-radius: var(--va-radius-sm);
    background: var(--va-chrome-btn-bg);
    backdrop-filter: blur(var(--va-chrome-btn-blur)) saturate(115%);
    -webkit-backdrop-filter: blur(var(--va-chrome-btn-blur)) saturate(115%);
    box-shadow: none;
    box-sizing: border-box;
    overflow: hidden;
    cursor: default;
    appearance: none;
    -webkit-appearance: none;
}

body.cas-no-model .cas-start-open-viewer-thumb[hidden] {
    display: none !important;
}

body.cas-no-model .cas-start-open-viewer-thumb-img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    vertical-align: top;
    pointer-events: none;
    -webkit-user-drag: none;
    user-select: none;
}

body.cas-no-model .cas-start-open-viewer-thumb-img[hidden] {
    display: none !important;
}

@media (hover: hover) and (pointer: fine) {
    /* Thumb: no hover fill — pressed = :active */
    body.cas-no-model .cas-start-open-viewer-thumb:hover,
    body.cas-no-model .cas-start-open-viewer-thumb.ripple:hover {
        background: var(--va-chrome-btn-bg);
        border-color: var(--va-chrome-btn-border);
    }
}

body.cas-no-model .cas-start-open-viewer-thumb:active,
body.cas-no-model .cas-start-open-viewer-thumb.ripple:active {
    background: var(--va-chrome-btn-bg-active) !important;
    border-color: var(--va-chrome-btn-border-active) !important;
}

body.cas-no-model .cas-start-ready-open-zone {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    margin: 0;
    padding: clamp(8px, 1.2vh, 12px) 0 0;
    min-height: 0;
}

body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn {
    position: relative;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: max-content;
    max-width: 100%;
    min-height: 0;
    margin: 0;
    padding: var(--cas-start-aspect-chip-pad-y) var(--cas-start-aspect-chip-pad-x);
    appearance: none;
    -webkit-appearance: none;
    border: none;
    border-radius: var(--cas-start-aspect-chip-radius);
    background: transparent !important;
    background-image: none !important;
    box-shadow: none !important;
    cursor: default;
    box-sizing: border-box;
}

body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    box-sizing: border-box;
    border: var(--cas-start-aspect-chip-border);
    border-radius: inherit;
    background: var(--cas-start-aspect-chip-bg);
    backdrop-filter: blur(var(--va-chrome-btn-blur)) saturate(115%);
    -webkit-backdrop-filter: blur(var(--va-chrome-btn-blur)) saturate(115%);
    pointer-events: none;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn:hover,
body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn.ripple:hover,
body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn.ripple:active {
    cursor: default;
}

body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn.ripple:active::before {
    border: var(--cas-start-aspect-chip-border-active);
    background: var(--va-chrome-btn-bg-active);
}

body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn:disabled {
    cursor: default;
    opacity: 0.55;
}

body.cas-no-model #cas-start-open-viewer-btn .cas-start-open-viewer-label {
    position: relative;
    z-index: 1;
    display: block;
    font: var(--va-btn-text-weight) var(--cas-start-aspect-label-font-size)/1.2 var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    letter-spacing: var(--va-btn-text-spacing);
    text-align: center;
    text-transform: lowercase;
    white-space: nowrap;
    background: linear-gradient(
        180deg,
        var(--cas-start-b-home-text-top) 0%,
        var(--cas-start-b-home-text-mid) 52%,
        var(--cas-start-b-home-text-bottom) 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: none;
    filter: drop-shadow(var(--cas-start-b-home-text-shadow));
}

body.cas-no-model.cas-start-preview-ready #cas-start-b-panel:has(.cas-start-open-viewer-btn.ripple:active) {
    border-color: var(--va-chrome-btn-border) !important;
}

body.cas-no-model #viewatlas-portal .cas-start-hero-in-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 4px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    padding: 0;
}

body.cas-no-model #viewatlas-portal .cas-start-hero-in-btn .cas-start-va-logo {
    font-size: var(--cas-start-a-logo-font-size);
    line-height: 1;
    margin-bottom: 4px;
}

body.cas-no-model #viewatlas-portal .cas-start-hero-in-btn .cas-start-brand-name {
    font-size: var(--cas-start-brand-font-size);
    max-width: none;
}

body.cas-no-model #viewatlas-portal .cas-start-hero-in-btn .cas-start-tagline {
    max-width: 36ch;
    text-align: center;
}

/* ── Center canvas (between side buttons) ── */

body.cas-no-model .cas-viewer-placeholder {
    --cas-start-side-w: calc(
        (100vw - 2 * var(--cas-bar-pad) - var(--cas-safe-left) - var(--cas-safe-right) - var(--cas-bar-gap)) / 2
    );
    top: calc(var(--cas-bar-pad) + var(--cas-safe-top));
    right: calc(var(--cas-bar-pad) + var(--cas-safe-right) + var(--cas-start-side-w) + var(--cas-bar-gap));
    bottom: calc(var(--cas-bar-pad) + var(--cas-safe-bottom));
    left: calc(var(--cas-bar-pad) + var(--cas-safe-left) + var(--cas-start-side-w) + var(--cas-bar-gap));
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0;
    pointer-events: none;
}

body.cas-no-model .cas-viewer-placeholder.cas-start-screen {
    pointer-events: none;
}

body.cas-no-model .cas-start-inner-canvas {
    width: 100%;
    height: 100%;
    min-height: 0;
}

body.cas-no-model #cas-bottom-bar {
    display: none;
}

body.cas-lab-single-model .cas-model-picker-header-slot,
body.cas-lab-single-model .cas-model-picker {
    display: none !important;
}

/* Menu dropdown — fixed overlay on left column (tall button: not below viewport) */

body.cas-no-model #cas-va-menu-bar.cas-va-menu-popup {
    --cas-start-side-w: calc(
        (100vw - 2 * var(--cas-bar-pad) - var(--cas-safe-left) - var(--cas-safe-right) - var(--cas-bar-gap)) / 2
    );
    position: fixed;
    top: calc(var(--cas-bar-pad) + var(--cas-safe-top));
    left: calc(var(--cas-bar-pad) + var(--cas-safe-left));
    right: auto;
    bottom: auto;
    width: var(--cas-start-side-w);
    z-index: 250;
    max-height: min(72dvh, calc(100dvh - 2 * var(--cas-bar-pad) - var(--cas-safe-top) - var(--cas-safe-bottom)));
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    box-sizing: border-box;
}

body.cas-no-model #cas-va-menu-bar.cas-va-menu-popup.is-open {
    display: flex;
}

body.cas-no-model #cas-va-menu-bar.cas-va-menu-popup button {
    background: var(--va-chrome-btn-bg) !important;
    background-size: auto !important;
    border: 1px solid var(--va-chrome-btn-border) !important;
    box-shadow: none !important;
    color: var(--va-text-primary) !important;
}

body.cas-no-model #cas-va-menu-bar.cas-va-menu-popup button:active {
    background: var(--va-chrome-btn-bg-active) !important;
    border-color: var(--va-chrome-btn-border-active) !important;
}

@media (hover: hover) and (pointer: fine) {
    body.cas-no-model #cas-va-menu-bar.cas-va-menu-popup button:hover {
        background: var(--va-chrome-btn-bg) !important;
        border-color: var(--va-chrome-btn-border) !important;
    }
}

body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn,
body.cas-no-model #viewatlas-portal.bar-btn-top-portal {
    z-index: 1;
    isolation: auto;
}

/* Orientation picker — A bal, B jobb (nincs oszlop-swap; preview a B lapon marad jobbra) */

/* ── A lap — back (viewer chevron, icon only — fix: A oszlop alsó sarka) ── */

body.cas-no-model .cas-start-a-back-btn {
    position: fixed;
    z-index: 210;
    box-sizing: border-box;
    width: clamp(40px, 5.5vh, 48px);
    height: clamp(40px, 5.5vh, 48px);
    min-width: 0;
    min-height: 0;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    cursor: default;
    pointer-events: auto;
    transition: none !important;
}

/* A lap — atlaszra vissza (bal alsó) */
body.cas-no-model.cas-start-atlas-entry .cas-start-a-back-btn,
body.cas-no-model.cas-start-picker-open .cas-start-a-back-btn {
    left: calc(var(--cas-bar-pad) + var(--cas-safe-left) + clamp(10px, 2vw, 16px));
    right: auto;
    bottom: calc(var(--cas-bar-pad) + var(--cas-safe-bottom) + clamp(8px, 2vh, 16px));
}

/* B lap — irányválasztás módosítása (B2/B3: jobb alsó) */
body.cas-no-model .cas-start-b-back-btn {
    position: fixed;
    z-index: 210;
    box-sizing: border-box;
    width: clamp(40px, 5.5vh, 48px);
    height: clamp(40px, 5.5vh, 48px);
    min-width: 0;
    min-height: 0;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    cursor: default;
    pointer-events: auto;
    transition: none !important;
}

body.cas-no-model.cas-start-preview-ready .cas-start-b-back-btn,
body.cas-no-model.cas-start-picker-step-b2 .cas-start-b-back-btn {
    left: calc(var(--cas-bar-pad) + var(--cas-safe-left) + var(--cas-start-side-w) + var(--cas-bar-gap) + clamp(10px, 2vw, 16px));
    right: auto;
    bottom: calc(var(--cas-bar-pad) + var(--cas-safe-bottom) + clamp(8px, 2vh, 16px));
}

body.cas-no-model .cas-start-b-back-btn[hidden] {
    display: none !important;
}

body.cas-no-model .cas-start-b-back-btn .cas-viewer-back-icon {
    display: block;
    width: 18px;
    height: 18px;
    color: var(--va-text-muted);
}

body.cas-no-model .cas-start-b-back-btn.ripple:active {
    background: transparent !important;
}

body.cas-no-model .cas-start-a-back-btn[hidden] {
    display: none !important;
}

body.cas-no-model .cas-start-a-back-btn .cas-viewer-back-icon {
    display: block;
    width: 18px;
    height: 18px;
    max-width: 18px;
    max-height: 18px;
    flex-shrink: 0;
    color: #fff;
    filter: var(--cas-btn-icon-filter);
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

body.cas-no-model .cas-start-a-back-btn.ripple:active {
    background: transparent !important;
    border-color: transparent !important;
    opacity: 0.72;
}

/* Dev build marker — ha nem latszik, regi cache / regi ablak */
body.cas-no-model .cas-dev-build {
    position: fixed;
    bottom: calc(var(--cas-bar-pad) + var(--cas-safe-bottom) + 2px);
    left: 50%;
    z-index: 300;
    transform: translateX(-50%);
    font: 600 10px/1 var(--va-font-ui, "Segoe UI", system-ui, sans-serif);
    letter-spacing: 0.06em;
    color: rgba(170, 180, 198, 0.55);
    pointer-events: none;
    user-select: none;
}

/* ══ Start page side buttons — egy helyen, 3d.css fehér/ripple felülírása ══ */

body.cas-no-model #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal,
body.cas-no-model #cas-start-a-panel.cas-start-a-panel.bar-btn-top-portal,
body.cas-no-model #cas-page-a-atlas-myology-btn.bar-btn-top-portal,
body.cas-no-model .cas-page-b-entry.bar-btn-top-portal {
    background: var(--va-chrome-btn-bg) !important;
    background-size: auto !important;
    border: 1px solid var(--va-chrome-btn-border) !important;
    box-shadow: none !important;
    transition: none !important;
}

@media (hover: hover) and (pointer: fine) {
    body.cas-no-model #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal,
    body.cas-no-model #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal:hover,
    body.cas-no-model.cas-start-preview-ready #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal,
    body.cas-no-model.cas-start-preview-ready #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal:hover,
    body.cas-no-model #cas-start-a-panel.cas-start-a-panel.bar-btn-top-portal,
    body.cas-no-model #cas-start-a-panel.cas-start-a-panel.bar-btn-top-portal:hover,
    body.cas-no-model #cas-start-a-panel:has(#viewatlas-portal.is-picker-open),
    body.cas-no-model #cas-start-a-panel:has(#viewatlas-portal.is-picker-open):hover,
    body.cas-no-model.cas-start-picker-open #cas-start-a-panel.cas-start-a-panel.bar-btn-top-portal,
    body.cas-no-model.cas-start-picker-open #cas-start-a-panel.cas-start-a-panel.bar-btn-top-portal:hover,
    body.cas-no-model #cas-page-a-atlas-myology-btn.bar-btn-top-portal,
    body.cas-no-model #cas-page-a-atlas-myology-btn.bar-btn-top-portal:hover,
    body.cas-no-model #cas-page-a-atlas-myology-btn.bar-btn-top-portal.ripple:hover,
    body.cas-no-model .cas-page-b-entry.bar-btn-top-portal,
    body.cas-no-model .cas-page-b-entry.bar-btn-top-portal:hover,
    body.cas-no-model .cas-page-b-entry.bar-btn-top-portal.ripple:hover {
        background: var(--va-chrome-btn-bg) !important;
        background-size: auto !important;
        border-color: var(--va-chrome-btn-border) !important;
        box-shadow: none !important;
        filter: none !important;
        transition: none !important;
    }

    body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger.cas-start-preview-img-btn,
    body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger.cas-start-preview-img-btn:hover,
    body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger.cas-start-preview-img-btn.ripple:hover,
    body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger.cas-start-preview-img-btn.ripple:active,
    body.cas-no-model #cas-start-b-panel .cas-start-preview-picker,
    body.cas-no-model #cas-start-b-panel .cas-start-preview-orient-shell,
    body.cas-no-model #cas-start-b-panel .cas-start-preview-main {
        background: transparent !important;
        background-image: none !important;
        border-color: transparent !important;
        box-shadow: none !important;
        filter: none !important;
        transition: none !important;
    }

    body.cas-no-model .cas-start-a-back-btn,
    body.cas-no-model .cas-start-a-back-btn:hover,
    body.cas-no-model .cas-start-a-back-btn.ripple:hover {
        background: transparent !important;
        border-color: transparent !important;
        box-shadow: none !important;
        filter: none !important;
        transition: none !important;
    }

    body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn,
    body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn:hover,
    body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn.ripple:hover,
    body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn.ripple:active,
    body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn.is-picker-open,
    body.cas-no-model #viewatlas-portal.cas-start-sid-menu-btn.is-picker-open.ripple:hover {
        background: transparent !important;
        background-image: none !important;
        border-color: transparent !important;
        box-shadow: none !important;
        filter: none !important;
        transition: none !important;
    }

    body.cas-no-model.cas-start-picker-open .cas-start-aspect-label:hover,
    body.cas-no-model.cas-start-picker-open .cas-start-aspect-label.is-selected:hover,
    body.cas-no-model.cas-start-picker-open .cas-start-aspect-label[aria-pressed="true"]:hover {
        background: var(--cas-start-aspect-chip-bg);
        border: var(--cas-start-aspect-chip-border);
    }

    body.cas-no-model.cas-start-picker-open .cas-start-aspect-label.is-selected:hover,
    body.cas-no-model.cas-start-picker-open .cas-start-aspect-label[aria-pressed="true"]:hover {
        border: var(--cas-start-aspect-chip-border-active);
    }

    body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn:hover::before,
    body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn.ripple:hover::before {
        border: var(--cas-start-aspect-chip-border);
        background: var(--cas-start-aspect-chip-bg);
    }

    body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn,
    body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn:hover,
    body.cas-no-model #cas-start-open-viewer-btn.cas-start-open-viewer-btn.ripple:hover {
        background: transparent !important;
        border: none !important;
        box-shadow: none !important;
        cursor: default !important;
    }

    body.cas-no-model .cas-start-b-back-btn,
    body.cas-no-model .cas-start-b-back-btn:hover,
    body.cas-no-model .cas-start-b-back-btn.ripple:hover {
        background: transparent !important;
        border-color: transparent !important;
        box-shadow: none !important;
    }
}

/* B panel — preview belül: egy chrome keret, belső rétegek mindig átlátszók */
body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger,
body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger:hover,
body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger.ripple:hover,
body.cas-no-model #cas-start-b-panel #cas-start-preview-trigger.ripple:active,
body.cas-no-model #cas-start-b-panel .cas-start-preview-picker,
body.cas-no-model #cas-start-b-panel .cas-start-preview-orient-shell,
body.cas-no-model #cas-start-b-panel .cas-start-preview-main {
    background: transparent !important;
    background-image: none !important;
    border: none !important;
    box-shadow: none !important;
    filter: none !important;
}

/* Irányválasztó A / B1 / B2 — világos kék keret, panel háttér nélkül; chip gombok változatlanok */
body.cas-no-model.cas-start-picker-open #cas-start-a-panel.cas-start-a-panel.bar-btn-top-portal,
body.cas-no-model.cas-start-picker-open #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal,
body.cas-no-model.cas-start-preview-ready #cas-start-a-panel.cas-start-a-panel.bar-btn-top-portal:not(.cas-start-a-panel--specimen),
body.cas-no-model.cas-start-preview-ready #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal {
    background: transparent !important;
    background-image: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: 1px solid var(--va-chrome-btn-border) !important;
    box-shadow: none !important;
}

body.cas-no-model.cas-start-preview-ready #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal.cas-start-b-panel--ready {
    border-color: var(--va-chrome-btn-border) !important;
}

@media (hover: hover) and (pointer: fine) {
    body.cas-no-model.cas-start-picker-open #cas-start-a-panel.cas-start-a-panel.bar-btn-top-portal:hover,
    body.cas-no-model.cas-start-picker-open #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal:hover,
    body.cas-no-model.cas-start-preview-ready #cas-start-a-panel.cas-start-a-panel.bar-btn-top-portal:not(.cas-start-a-panel--specimen):hover,
    body.cas-no-model.cas-start-preview-ready #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal:hover {
        background: transparent !important;
        background-image: none !important;
        border-color: var(--va-chrome-btn-border) !important;
        box-shadow: none !important;
        filter: none !important;
    }

    body.cas-no-model.cas-start-preview-ready #cas-start-b-panel.cas-start-b-panel.bar-btn-top-portal.cas-start-b-panel--ready:hover {
        border-color: var(--va-chrome-btn-border) !important;
    }
}

/* ── A lap — home (sID hero + atlas launch) + specimen shell ── */

body.cas-no-model .cas-page-a {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: relative;
    pointer-events: auto;
}

body.cas-no-model .cas-start-a-home {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    display: flex;
    flex-direction: column;
    position: absolute;
    inset: 0;
    z-index: 1;
}

body.cas-no-model .cas-start-a-home .cas-start-sid-panel-inner {
    flex: 1 1 auto;
    min-height: 0;
    height: 100%;
    width: 100%;
}

body.cas-no-model .cas-start-a-home[hidden],
body.cas-no-model .cas-page-a-atlas-entry[hidden],
body.cas-no-model #cas-start-b-specimen-panel[hidden] {
    display: none !important;
}

body.cas-no-model #cas-page-a-atlas-entry,
body.cas-no-model .cas-start-a-preview-host {
    position: absolute;
    inset: 0;
    z-index: 4;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    box-sizing: border-box;
    overflow: hidden;
}

body.cas-no-model.cas-start-picker-open #cas-start-specimen-card:not([hidden]) {
    display: flex !important;
}

body.cas-no-model.cas-start-picker-open .cas-page-b-home {
    display: none !important;
}

body.cas-no-model.cas-start-picker-open.cas-start-picker-lane-b .cas-start-a-home,
body.cas-no-model.cas-start-picker-open.cas-start-picker-lane-a .cas-start-a-home {
    display: flex !important;
}

body.cas-no-model.cas-start-picker-lane-a .cas-page-a {
    overflow: hidden;
}

body.cas-no-model.cas-start-picker-open #cas-start-a-panel.cas-start-a-panel--specimen {
    background: transparent !important;
    background-image: none !important;
    border: none !important;
    box-shadow: none !important;
    pointer-events: none;
}

body.cas-no-model.cas-start-picker-open #cas-start-a-panel.cas-start-a-panel--specimen:hover,
body.cas-no-model.cas-start-picker-open #cas-start-a-panel.cas-start-a-panel--specimen.ripple:hover {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

body.cas-no-model.cas-start-picker-open #cas-start-specimen-card.cas-start-specimen-card {
    pointer-events: auto;
}

body.cas-no-model .cas-start-a-preview-host:empty {
    display: none !important;
}

body.cas-no-model #cas-start-b-specimen-panel.cas-start-b-specimen-panel {
    position: absolute;
    inset: 0;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-sizing: border-box;
    overflow: hidden;
}

body.cas-no-model #cas-start-specimen-card-b.cas-start-specimen-card {
    position: absolute;
    inset: 0;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-sizing: border-box;
    padding: clamp(12px, 2vh, 20px) clamp(10px, 2vw, 16px);
    overflow: hidden;
}