:root {
    --paper: #f1eccb;
    --ink: #101010;
    --panel: #20242a;
    --accent: #e7b83f;
    --e6b-ui-font: "Segoe UI", Roboto, Arial, sans-serif;
    --e6b-mono-font: "Courier New", monospace;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: linear-gradient(180deg, #15181c 0%, #22272d 100%);
    color: #f6f1de;
    font-family: var(--e6b-ui-font);
}

body.e6b-embedded {
    width: 100vw;
    min-height: 100dvh;
    overflow: hidden;
    background: transparent;
}

button,
input {
    font: inherit;
}

.e6b-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255,255,255,0.12);
    background: rgba(10,12,15,0.82);
}

.e6b-topbar h1 {
    margin: 0;
    font-size: 18px;
    line-height: 1.1;
    letter-spacing: 0;
}

.e6b-topbar span {
    display: block;
    margin-top: 4px;
    color: rgba(246,241,222,0.62);
    font-size: 12px;
}

.side-switch,
.button-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.side-switch button,
.button-row button {
    min-height: 34px;
    border-radius: 7px;
    border: 1px solid rgba(255,255,255,0.18);
    background: linear-gradient(#353d46, #171c22);
    color: #f6f1de;
    cursor: pointer;
    font-weight: 800;
    letter-spacing: 0;
}

.side-switch button.active,
.button-row button.active {
    background: linear-gradient(#f0c857, #9b721b);
    color: #111;
}

.e6b-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 330px;
    gap: 18px;
    height: calc(100vh - 69px);
    min-height: 0;
    overflow: hidden;
    padding: 18px;
}

body.e6b-embedded .e6b-topbar,
body.e6b-embedded .e6b-controls {
    display: none;
}

body.e6b-embedded .e6b-layout {
    grid-template-columns: 1fr;
    gap: 0;
    width: 100vw;
    height: 100dvh;
    min-height: 100dvh;
    padding: 0;
    overflow: visible;
}

body.e6b-embedded .e6b-stage,
body.e6b-embedded .e6b-computer {
    width: 100%;
    height: 100%;
}

body.e6b-embedded .e6b-stage {
    position: static;
    top: auto;
    height: 100%;
    background: transparent;
    overflow: visible;
}

.e6b-stage {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    height: calc(100vh - 105px);
    overflow: hidden;
    position: sticky;
    top: 18px;
    align-self: start;
}

.e6b-computer {
    position: relative;
    display: grid;
    place-items: center;
    width: 100%;
    height: 100%;
}

body.e6b-embedded .e6b-computer,
body.e6b-preview-transform .e6b-computer {
    transform: translate3d(var(--e6b-view-x, 0px), var(--e6b-view-y, 0px), 0) scale(var(--e6b-view-scale, 1));
    transform-origin: center center;
    will-change: transform;
}

body.e6b-view-gesturing .e6b-stack {
    cursor: grabbing;
}

.e6b-stack {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    background: transparent;
    box-shadow: none;
    touch-action: none;
    user-select: none;
    cursor: default;
}

.e6b-stack.view-pan-cursor:active,
.e6b-stack.wind-slider-cursor:active,
.e6b-stack.wind-rotate-cursor:active {
    cursor: grabbing;
}

.wind-stack.wind-dot-cursor:not(:active) {
    cursor: crosshair;
}

.e6b-stack.view-pan-cursor:not(:active),
.wind-stack.view-pan-cursor.wind-dot-cursor:not(:active),
.e6b-stack.wind-slider-cursor:not(:active),
.e6b-stack.wind-rotate-cursor:not(:active) {
    cursor: grab;
}

.front-stack {
    width: min(650px, 100%, calc((100vh - 116px) * 0.864));
    aspect-ratio: 510 / 590;
}

.wind-stack {
    width: min(470px, 100%, calc((100vh - 116px) * 0.51));
    aspect-ratio: 510 / 1000;
}

body.e6b-embedded .front-stack {
    width: var(--e6b-embedded-front-width, min(100vw, calc(100dvh * 510 / 590)));
    max-width: none;
    overflow: visible;
    border-radius: 0;
}

body.e6b-embedded .wind-stack {
    width: var(--e6b-embedded-wind-width, min(100vw, calc(100dvh * 510 / 1000)));
    max-width: none;
    overflow: visible;
    border-radius: 0;
}

.e6b-board-layer {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
    transform-origin: 50% 50%;
}

.e6b-rotating-board {
    transform: rotate(var(--e6b-rotation, 0deg));
    will-change: transform;
}

.e6b-front-rotor {
    pointer-events: none;
    transform-origin: var(--e6b-front-origin-x, 50%) var(--e6b-front-origin-y, 50%);
}

.e6b-workbench-front-layer {
    display: none;
    overflow: visible;
}

.e6b-workbench-front-layer svg {
    display: block;
    width: 100%;
    height: 100%;
    overflow: visible !important;
}

.e6b-workbench-wind-layer {
    display: none;
    overflow: visible;
}

.e6b-workbench-wind-layer svg {
    display: block;
    width: 100%;
    height: 100%;
    overflow: visible !important;
}

.e6b-workbench-render-image {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

.e6b-workbench-front-layer .trace-preview-surface-outline,
.e6b-workbench-wind-layer .trace-preview-surface-outline {
    fill: none !important;
    stroke: rgba(18, 22, 25, 0.82);
    vector-effect: non-scaling-stroke;
}

.e6b-workbench-front-layer .trace-preview-back-surface {
    fill: #d1d5d8;
}

.e6b-workbench-front-layer .trace-preview-front-surface {
    fill: #c5cacf;
}

.e6b-workbench-wind-layer .trace-preview-wind-rotor-back-surface {
    fill: #d0d4d7;
}

.e6b-workbench-wind-layer .trace-preview-wind-rotor-front-surface {
    fill: #c9cdd1;
}

body.e6b-workbench-wind-active .e6b-workbench-wind-layer {
    display: block;
}

.e6b-workbench-wind-layer .trace-wind-marked-point {
    display: none;
}

body.e6b-workbench-front-active .e6b-workbench-front-layer {
    display: block;
}

.e6b-workbench-front-missing {
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(18, 22, 25, 0.72);
    font-family: var(--e6b-ui-font);
    font-size: 13px;
    font-weight: 800;
    line-height: 1.2;
    text-align: center;
    letter-spacing: 0;
    background:
        radial-gradient(circle at center, rgba(210, 215, 219, 0.94) 0 65%, transparent 66%);
}

.e6b-workbench-front-missing span {
    max-width: 150px;
    padding: 8px 10px;
    border: 1px solid rgba(18, 22, 25, 0.28);
    border-radius: 6px;
    background: rgba(238, 241, 243, 0.82);
}

body.e6b-workbench-front-active .e6b-workbench-front-missing {
    display: none;
}

.e6b-workbench-wind-missing {
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(18, 22, 25, 0.72);
    font-family: var(--e6b-ui-font);
    font-size: 13px;
    font-weight: 800;
    line-height: 1.2;
    text-align: center;
    letter-spacing: 0;
    background:
        linear-gradient(rgba(18, 22, 25, 0.16) 1px, transparent 1px),
        linear-gradient(90deg, rgba(18, 22, 25, 0.16) 1px, transparent 1px),
        linear-gradient(180deg, rgba(230, 232, 234, 0.74), rgba(213, 216, 219, 0.74));
    background-size: 24px 24px, 24px 24px, auto;
}

.e6b-workbench-wind-missing span {
    max-width: 170px;
    padding: 8px 10px;
    border: 1px solid rgba(18, 22, 25, 0.28);
    border-radius: 6px;
    background: rgba(238, 241, 243, 0.82);
}

body.e6b-workbench-wind-active .e6b-workbench-wind-missing {
    display: none;
}

.e6b-embedded-chrome {
    display: none;
    position: absolute;
    inset: 0;
    z-index: 20;
    overflow: visible;
    pointer-events: none;
}

body.e6b-embedded .e6b-embedded-chrome {
    display: block;
}

.e6b-embedded-btn {
    position: absolute;
    left: var(--e6b-local-control-x, 0px);
    top: var(--e6b-local-control-y, 0px);
    display: grid;
    place-items: center;
    width: 31px;
    height: 31px;
    border: 1px solid rgba(43, 49, 53, 0.72);
    border-radius: 50%;
    background: rgba(190, 196, 200, 0.96);
    color: #202427;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.52),
        0 1px 2px rgba(0, 0, 0, 0.28);
    cursor: pointer;
    font: 700 16px/1 Arial, Helvetica, sans-serif;
    pointer-events: auto;
    transform: translate(-50%, -50%);
    user-select: none;
    touch-action: none;
}

.e6b-embedded-btn:active {
    transform: translate(-50%, calc(-50% + 1px));
    background: rgba(166, 173, 178, 0.98);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.24);
}

.e6b-embedded-btn:focus {
    outline: none;
}

.e6b-embedded-btn:focus-visible {
    outline: 2px solid rgba(65, 72, 77, 0.92);
    outline-offset: 2px;
}

.e6b-embedded-close {
    background: rgba(157, 163, 167, 0.98);
    color: #202427;
}

.e6b-embedded-btn[data-e6b-control="flip"] {
    left: var(--e6b-local-control-flip-x, var(--e6b-local-control-x, 0px));
    top: var(--e6b-local-control-flip-y, var(--e6b-local-control-y, 0px));
}

.e6b-embedded-btn[data-e6b-control="zoomOut"] {
    left: var(--e6b-local-control-zoom-out-x, var(--e6b-local-control-x, 0px));
    top: var(--e6b-local-control-zoom-out-y, var(--e6b-local-control-y, 0px));
}

.e6b-embedded-btn[data-e6b-control="zoomIn"] {
    left: var(--e6b-local-control-zoom-in-x, var(--e6b-local-control-x, 0px));
    top: var(--e6b-local-control-zoom-in-y, var(--e6b-local-control-y, 0px));
}

.e6b-embedded-btn[data-e6b-control="close"] {
    left: var(--e6b-local-control-close-x, var(--e6b-local-control-x, 0px));
    top: var(--e6b-local-control-close-y, var(--e6b-local-control-y, 0px));
}

.e6b-wind-slider {
    transform: translate3d(0, var(--e6b-wind-slide-y, 0px), 0);
    will-change: transform;
    backface-visibility: hidden;
    contain: layout paint;
}

.e6b-workbench-wind-slider-art svg {
    opacity: 1 !important;
}

.e6b-workbench-wind-slider-art .trace-preview-slider-surface {
    fill: #d2d8dc !important;
    fill-opacity: 1 !important;
    opacity: 1 !important;
}

.e6b-wind-rotor {
    transform: rotate(var(--e6b-rotation, 0deg));
    transform-origin: var(--e6b-wind-origin-x, 50%) var(--e6b-wind-origin-y, 50%);
    will-change: transform;
}

.e6b-wind-rotor-placeholder {
    border: 0;
    border-radius: 0;
    background: transparent;
}

.e6b-center-pin {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 14px;
    height: 14px;
    border: 4px solid #111;
    border-radius: 50%;
    background: #f6f0d2;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.e6b-wind-dot {
    position: absolute;
    left: var(--e6b-wind-dot-x, 50%);
    top: var(--e6b-wind-dot-y, 50%);
    width: 14px;
    height: 14px;
    z-index: 4;
    border: 4px solid #3757ff;
    border-radius: 50%;
    background: #f6f0d2;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.e6b-computer.showing-front .wind-stack,
.e6b-computer.showing-wind .front-stack {
    display: none;
}

.e6b-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
    height: calc(100vh - 105px);
    min-width: 0;
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.control-section {
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    background: linear-gradient(160deg, rgba(48,55,64,0.96), rgba(22,27,32,0.98));
    padding: 12px;
}

.control-title {
    margin-bottom: 10px;
    color: var(--accent);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
}

.control-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 9px;
}

.control-grid label {
    display: flex;
    flex-direction: column;
    gap: 5px;
    color: rgba(246,241,222,0.68);
    font-size: 11px;
    font-weight: 800;
}

.control-grid input {
    width: 100%;
    min-height: 34px;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.18);
    background: #11161b;
    color: #f6f1de;
    padding: 6px 8px;
    font-family: var(--e6b-mono-font);
    font-size: 15px;
    font-weight: 900;
}

.button-row {
    margin-top: 10px;
}

.readout {
    display: grid;
    gap: 7px;
    margin: 11px 0 0;
}

.readout div {
    display: grid;
    grid-template-columns: 78px minmax(0, 1fr);
    gap: 6px;
    align-items: baseline;
    min-height: 24px;
    padding: 5px 7px;
    border-radius: 6px;
    background: rgba(0,0,0,0.23);
}

.readout dt {
    color: rgba(246,241,222,0.58);
    font-size: 11px;
    font-weight: 800;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.readout dd {
    margin: 0;
    color: #fff1ca;
    font: 900 12.5px/1.2 var(--e6b-mono-font);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0;
    min-width: 0;
    overflow: hidden;
    text-align: right;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (max-width: 920px) {
    .e6b-layout {
        grid-template-columns: 1fr;
        height: auto;
        min-height: calc(100vh - 69px);
        overflow: visible;
    }

    .e6b-stage {
        position: static;
        top: auto;
        height: auto;
        min-height: min(68vh, 680px);
    }

    .e6b-controls {
        max-width: 760px;
        width: 100%;
        height: auto;
        overflow: visible;
        margin: 0 auto;
    }
}