:root {
    --accent-color: #69727d;
    --accent-hover: #545b64;
    --bg-primary: #0d0d0d;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #2a2a3e;
    --bg-card: #16213e;
    --text-color: #e0e0e0;
    --text-muted: #8a8a9a;
    --info-color: #5cf3ff;
    --success-color: #00cc44;
    --font-family: 'Roboto', sans-serif;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition-speed: 0.3s;
    --gap: 20px;
    --gap-sm: 12px;
    --gap-lg: 28px;
}

@font-face {
    font-family: 'Roboto';
    font-style: normal;
    font-weight: 100;
    src: url('/wp-content/themes/hello-theme-child-master/fonts/roboto-v30-latin-100.woff2') format('woff2'),
         url('/wp-content/themes/hello-theme-child-master/fonts/roboto-v30-latin-100.woff') format('woff');
}
@font-face {
    font-family: 'Roboto';
    font-style: normal;
    font-weight: 300;
    src: url('/wp-content/themes/hello-theme-child-master/fonts/roboto-v30-latin-300.woff2') format('woff2'),
         url('/wp-content/themes/hello-theme-child-master/fonts/roboto-v30-latin-300.woff') format('woff');
}
@font-face {
    font-family: 'Roboto';
    font-style: normal;
    font-weight: 400;
    src: url('/wp-content/themes/hello-theme-child-master/fonts/roboto-v30-latin-regular.woff2') format('woff2'),
         url('/wp-content/themes/hello-theme-child-master/fonts/roboto-v30-latin-regular.woff') format('woff');
}
@font-face {
    font-family: 'Roboto';
    font-style: normal;
    font-weight: 500;
    src: url('/wp-content/themes/hello-theme-child-master/fonts/roboto-v30-latin-500.woff2') format('woff2'),
         url('/wp-content/themes/hello-theme-child-master/fonts/roboto-v30-latin-500.woff') format('woff');
}

*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background: var(--bg-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    font-weight: 300;
    font-size: 16px;
    line-height: 1.6;
}

html,
body {
    width: 100%;
    overflow-x: hidden;
}

main {
    display: flex;
    flex-direction: column;
    gap: var(--gap);
}

h1, h2, h3, h4, h5, p, div, a, ul, li, table, td, th, tr, input, button, span, select, label, textarea {
    font-family: var(--font-family);
    color: var(--text-color);
}

a { color: var(--info-color); text-decoration: none; }
a:hover { text-decoration: underline; }

#app {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--gap);
}

main,
#workbenchArea,
#taskSection,
#gallerySection {
    width: 100%;
    max-width: 100%;
}

.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--gap-sm) var(--gap);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--gap-lg);
}

.site-title {
    font-size: 1.2em;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.top-bar-actions {
    display: flex;
    align-items: center;
    gap: var(--gap);
}

.top-bar-btn {
    background: var(--bg-tertiary);
    color: var(--text-color);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 8px 16px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.85em;
}
.top-bar-btn:hover { background: var(--accent-color); }

#langSwitch a { padding: 4px 8px; font-size: 0.85em; }

#workbenchArea {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: var(--gap);
    margin-bottom: var(--gap);
    position: relative;
    padding-top: 58px;
}

.workbench-top-actions {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 8px;
    z-index: 3;
}

#orcaToggleWorkbench {
    display: none;
}

.workbench-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: var(--gap);
    margin-bottom: var(--gap);
}

@media (max-width: 970px) {
    .workbench-grid { grid-template-columns: 1fr; }
}

.workbench-grid > * {
    min-width: 0;
}

#app.video-mode .data-panel { display: none !important; }
#app.video-mode #controlSection { display: none !important; }
#app.video-mode .viewer-panel { grid-column: 1 / -1; }
#app.video-mode #JSMol { display: none !important; }
#app.video-mode #videoPlayer { display: block !important; }

#app.text-mode .data-panel { display: none !important; }
#app.text-mode .viewer-panel { grid-column: 1 / -1; }
#app.text-mode #controlSection { display: none !important; }

.viewer-panel {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    overflow: hidden;
    min-height: 400px;
    position: relative;
    min-width: 0;
}

.system-switcher {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: rgba(0,0,0,0.25);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.system-switcher label {
    font-size: 0.92em;
    color: var(--text-muted);
    white-space: nowrap;
}

.system-switcher select {
    min-width: 240px;
    max-width: 100%;
    background: var(--bg-tertiary);
    color: var(--text-color);
    border: 1px solid rgba(255,255,255,0.16);
    border-radius: var(--border-radius);
    padding: 8px 10px;
    font-size: 0.9em;
}

#JSMol {
    width: 100%;
    height: 500px;
    max-height: 60vh;
}

#JSMol,
#JSMolcomp,
#JSMolControl,
#laboratory {
    width: 100%;
    max-width: 100%;
}

#JSMol #jmol_1_appletinfotablediv,
#JSMol #jmol_1_appletdiv,
#JSMol object,
#JSMol canvas,
#JSMol table {
    width: 100% !important;
    max-width: 100% !important;
}

#JSMol #jmol_1_appletinfotablediv {
    height: min(60vh, 520px) !important;
    aspect-ratio: auto;
}

.rs-workbench-text {
    margin: var(--gap);
    padding: var(--gap);
    background: var(--bg-secondary);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--border-radius);
    line-height: 1.6;
    color: var(--text-color);
}

.rs-workbench-text h3,
.rs-workbench-text h4,
.rs-workbench-text h5 {
    margin-top: 0;
    margin-bottom: 10px;
}

.rs-workbench-text table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
}

.rs-workbench-text th,
.rs-workbench-text td {
    border: 1px solid rgba(255,255,255,0.12);
    padding: 8px 10px;
    vertical-align: top;
}

.rs-workbench-text ul {
    padding-left: 20px;
}

.rs-workbench-slider-shell {
    background:
        radial-gradient(1200px 340px at 5% -25%, rgba(92, 243, 255, 0.16), transparent 45%),
        radial-gradient(900px 300px at 100% 0%, rgba(76, 145, 255, 0.12), transparent 40%),
        linear-gradient(160deg, #121d36 0%, #0f172b 100%);
    border-color: rgba(92, 243, 255, 0.2);
}

.rs-slider-intro {
    margin-bottom: 12px;
    color: #c9d6ec;
}

.rs-workbench-slider {
    display: flex;
    gap: 0;
    width: 100%;
    user-select: none;
}

.rs-workbench-slider-frame {
    position: relative;
    padding: 0 34px;
}

.rs-workbench-slider-viewport {
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    border-radius: 12px;
}

.rs-workbench-slider-viewport::-webkit-scrollbar {
    display: none;
}

.rs-workbench-slider-viewport {
    scrollbar-width: none;
}

.rs-workbench-slide {
    flex: 0 0 100%;
    scroll-snap-align: start;
    background: transparent;
    border-radius: 12px;
    padding: 18px 18px 20px;
    box-shadow: none;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-auto-flow: row dense;
    column-gap: 20px;
    align-items: start;
}

.rs-workbench-slide > :not(.rs-slide-media-placeholder) {
    grid-column: 1;
}
.rs-workbench-slide > .rs-slide-image-button {
    grid-column: 2;
    grid-row: 1 / span 10;
    align-self: start;
}

.rs-workbench-slide--no-media {
    grid-template-columns: 1fr;
}

.rs-workbench-slide--orca-split .rs-slide-table {
    grid-column: 2;
    grid-row: 1 / span 12;
    align-self: start;
    margin-top: 0;
}

.rs-workbench-slide h4 {
    margin-bottom: 12px;
    color: #f4f8ff;
    font-size: 1.06rem;
    line-height: 1.25;
}

.rs-workbench-slide p,
.rs-workbench-slide li {
    color: #d7e4fb;
    font-size: 1.01rem;
    line-height: 1.45;
}

.rs-workbench-slide ul {
    margin: 0;
    padding-left: 1.2rem;
}

.rs-workbench-slide li {
    margin-bottom: 6px;
}

.rs-slide-media-placeholder {
    width: 100%;
    min-height: 220px;
    border-radius: 10px;
    border: 1px dashed rgba(92, 243, 255, 0.55);
    background:
        repeating-linear-gradient(135deg, rgba(92, 243, 255, 0.06) 0 10px, rgba(62, 164, 255, 0.03) 10px 20px),
        linear-gradient(135deg, rgba(92, 243, 255, 0.14), rgba(62, 164, 255, 0.07));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #8ddfff;
    font-size: 1em;
    grid-column: 2;
    grid-row: 1 / span 8;
    margin-bottom: 0;
}

.rs-slide-table {
    margin-top: 10px;
}

.rs-slide-table th {
    background: rgba(92, 243, 255, 0.12);
}

.rs-slide-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 46px;
    border: 1px solid rgba(126, 193, 255, 0.36);
    border-radius: 10px;
    background: linear-gradient(180deg, #17315a, #12294d);
    color: #c9e9ff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    line-height: 1;
    padding: 0;
    z-index: 3;
}

.rs-slide-nav:hover:not(:disabled) {
    background: linear-gradient(180deg, #1b3a6a, #15335f);
    border-color: rgba(146, 218, 255, 0.58);
}

.rs-slide-nav-prev {
    left: -2px;
}

.rs-slide-nav-next {
    right: -2px;
}

.rs-slide-nav:disabled {
    opacity: 0.45;
    cursor: default;
}

.rs-slider-status {
    margin-top: 10px;
    display: flex;
    justify-content: center;
}

.rs-slider-counter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 88px;
    padding: 5px 12px;
    border-radius: 999px;
    background: rgba(92, 243, 255, 0.14);
    border: 1px solid rgba(92, 243, 255, 0.3);
    color: #d8f4ff;
    font-size: 0.88em;
    font-weight: 500;
}

@media (max-width: 1024px) {
    .rs-workbench-slider-frame {
        padding: 0 28px;
    }

    .rs-workbench-slide {
        grid-template-columns: 1fr;
        row-gap: 10px;
    }

    .rs-workbench-slide > :not(.rs-slide-media-placeholder) {
        grid-column: 1;
    }

    .rs-workbench-slide > .rs-slide-image-button {
        grid-column: 1;
        grid-row: auto;
        margin-bottom: 8px;
    }

    .rs-slide-media-placeholder {
        grid-column: 1;
        grid-row: auto;
        min-height: 150px;
        margin-bottom: 10px;
    }

    .rs-workbench-slide--orca-split .rs-slide-table {
        grid-column: 1;
        grid-row: auto;
        margin-top: 12px;
    }

    .rs-slide-nav {
        width: 26px;
        height: 42px;
        font-size: 18px;
    }
}

#jmol_1_appletdiv > img { display: none; }
#jmol_1_appletinfotablediv { aspect-ratio: 1; width: 100%; height: auto; }

.exp-video {
    width: 100%;
    aspect-ratio: 16 / 9;
    min-height: 340px;
    max-height: 70vh;
    height: auto;
    border-radius: var(--border-radius);
}

#videoPlayer {
    padding: 14px;
}

.data-panel {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: var(--gap);
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
    min-height: 420px;
    min-width: 0;
}

#resultSection {
    padding: var(--gap-sm);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
}

#result {
    min-height: 1.8em;
    display: flex;
    align-items: center;
    gap: 10px;
}

#result .spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.18);
    border-top-color: var(--info-color);
    border-radius: 50%;
    display: none;
    flex: 0 0 16px;
}

#result.spin .spinner {
    display: inline-block;
    animation: rs-spin 0.9s linear infinite;
}

@keyframes rs-spin {
    to { transform: rotate(360deg); }
}

#energy { font-size: 1.4em; font-weight: 400; }

.data-toggles {
    display: flex;
    gap: var(--gap);
    flex-wrap: wrap;
}

.data-toggle-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.9em;
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    user-select: none;
}
.data-toggle-label:hover { background: var(--accent-hover); }

#scatterRangeNotice {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 6px 10px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.04);
    color: var(--text-muted);
    font-size: 0.84em;
    line-height: 1.4;
}

#scatterRangeNotice.show {
    display: flex;
}

#scatterRangeNoticeText {
    flex: 1 1 auto;
}

#scatterRangeNoticeClose {
    flex: 0 0 auto;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.03);
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1;
    padding: 0;
    cursor: pointer;
}

#scatterRangeNoticeClose:hover {
    background: rgba(255,255,255,0.1);
    color: #d7e0ec;
}

#dataSection > #scatter {
    display: none !important;
}

#dataSection > #\33 Dscatter {
    display: none !important;
}

#dataSection > #divtable {
    display: none !important;
}

#dataSection > #scatter.show { display: block !important; }
#dataSection > #\33 Dscatter.show { display: block !important; }
#dataSection > #divtable.show { display: block !important; }

#dataSection > #divtable.show {
    margin-top: 8px;
}

#controlSection {
    padding-top: var(--gap-sm);
    border-top: 1px solid rgba(255,255,255,0.08);
    margin-top: var(--gap-sm);
    background: rgba(0,0,0,0.16);
    border-radius: var(--border-radius);
    padding: 12px;
}

.control-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 10px;
    margin-bottom: var(--gap-sm);
}

.control-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap);
    margin-bottom: var(--gap-sm);
}

input[type="button"],
button.toggle-btn,
button.help-nav-btn,
button.step-arrow {
    font-family: var(--font-family);
    font-size: 0.9em;
    font-weight: 400;
    padding: 10px 22px;
    background-color: var(--bg-tertiary);
    color: var(--text-color);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-speed), transform 0.1s;
    letter-spacing: 0.5px;
    min-height: 42px;
}

input[type="button"]:hover,
button.toggle-btn:hover,
button.help-nav-btn:hover,
button.step-arrow:hover:not(:disabled) {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

input#Calculate {
    background-color: var(--accent-color);
    font-weight: 500;
}

input[type=button]:disabled,
button:disabled {
    background-color: #333;
    color: #666;
    border-color: #444;
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.checkbox-container {
    display: inline-flex;
    align-items: center;
    position: relative;
    padding-left: 30px;
    cursor: pointer;
    user-select: none;
    font-size: 0.9em;
    min-height: 24px;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 18px;
    width: 18px;
    border: 1px solid #555;
    border-radius: 3px;
    background: var(--bg-primary);
}

.checkbox-container input:checked ~ .checkmark:after {
    content: "";
    position: absolute;
    left: 5px;
    top: 1px;
    width: 6px;
    height: 11px;
    border: solid var(--info-color);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

#stepNav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-lg);
    padding: var(--gap-sm) var(--gap);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--gap);
    position: relative;
    z-index: 12020;
}

#stepNavBottom {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-lg);
    padding: var(--gap-sm) var(--gap);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--gap);
    position: relative;
    z-index: 12020;
}

.analytics-nav-btn {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: rgba(224,224,224,0.75);
    cursor: pointer;
    transition: background var(--transition-speed), color var(--transition-speed);
}

.analytics-nav-btn svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

.analytics-nav-btn:hover {
    background: rgba(255,255,255,0.09);
    color: #ffffff;
}

#stepIndicatorBottom {
    font-size: 1em;
    font-weight: 500;
    min-width: 120px;
    text-align: center;
}

#stepIndicator {
    font-size: 1em;
    font-weight: 500;
    min-width: 120px;
    text-align: center;
}

.step-indicator-dropdown {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 140px;
    cursor: pointer;
    user-select: none;
}

.step-indicator-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.step-indicator-label::after {
    content: "";
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid rgba(255,255,255,0.82);
    transform: translateY(1px);
    opacity: 0.9;
}

.step-indicator-dropdown.open .step-indicator-label::after {
    transform: rotate(180deg) translateY(-1px);
}

.step-jump-menu {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    min-width: 320px;
    max-width: min(84vw, 560px);
    max-height: 320px;
    overflow-y: auto;
    padding: 8px;
    border-radius: 10px;
    background: #121a31;
    border: 1px solid rgba(255,255,255,0.16);
    box-shadow: 0 10px 24px rgba(0,0,0,0.42);
    display: none;
    z-index: 13000;
}

#freezeComplete,
#lineardiv,
#dataToggle3D,
.control-options .checkbox-container:has(#Animation) {
    display: none !important;
}

.step-jump-menu.open-down {
    top: calc(100% + 8px);
}

.step-jump-menu.open-up {
    bottom: calc(100% + 8px);
}

.step-indicator-dropdown.open .step-jump-menu {
    display: grid;
    gap: 6px;
}

.step-jump-item {
    width: 100%;
    text-align: left;
    background: #18213c;
    color: #e8effa;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    padding: 8px 10px;
    font-size: 0.88em;
    cursor: pointer;
}

.step-jump-item:hover {
    background: #223056;
    border-color: rgba(92, 243, 255, 0.45);
}

.step-jump-item.is-active {
    border-color: rgba(92, 243, 255, 0.65);
    box-shadow: inset 0 0 0 1px rgba(92, 243, 255, 0.25);
}

.step-arrow { min-width: 110px; }

#taskSection {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: var(--gap-lg);
    padding-top: 86px;
    margin-bottom: var(--gap);
    position: relative;
    overflow: visible;
}

.task-top-actions {
    position: absolute;
    top: 16px;
    left: var(--gap-lg);
    right: var(--gap-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    z-index: 2;
}

#notesToggleTask {
    width: auto;
    min-width: 0;
    height: auto;
    min-height: 40px;
    padding: 8px 14px;
    border-radius: var(--border-radius);
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.notes-toggle-icon {
    display: inline-flex;
    width: 20px;
    height: 20px;
    align-items: center;
    justify-content: center;
    flex: 0 0 20px;
}

.notes-toggle-icon svg {
    width: 20px;
    height: 20px;
    display: block;
}

.notes-toggle-icon circle {
    display: none;
}

.notes-toggle-icon path {
    fill: none;
    stroke: var(--info-color);
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

#notesToggleTask[aria-expanded="true"] {
    border-color: rgba(92, 243, 255, 0.6);
    box-shadow: 0 0 0 2px rgba(92, 243, 255, 0.14);
}

#taskNotebookPanel {
    margin-bottom: var(--gap-sm);
}

#taskNotebookInput {
    width: 100%;
    min-height: 130px;
    resize: vertical;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: var(--border-radius);
    color: var(--text-color);
    padding: 12px 14px;
    line-height: 1.55;
}

#taskNotebookInput:focus {
    outline: none;
    border-color: var(--info-color);
    box-shadow: 0 0 0 2px rgba(92, 243, 255, 0.14);
}

.progressbar-head {
    margin-bottom: var(--gap);
}

#taskProgressLabel {
    font-size: 0.9em;
    color: #c8d0db;
    margin-bottom: 8px;
    letter-spacing: 0.2px;
}

#taskProgressLabel .progress-current,
#taskProgressLabel .progress-total {
    font-weight: 500;
    color: #ffffff;
}

#task {
    line-height: 1.75;
    margin-bottom: var(--gap-sm);
    overflow-wrap: anywhere;
}

#taskAnswerDiv {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    flex-wrap: wrap;
    margin-bottom: var(--gap-sm);
}

#taskFeedback {
    margin-left: 0;
    min-height: 0;
    display: none;
    align-items: center;
    justify-self: start;
    font-size: 0.9em;
    line-height: 1.45;
    border-radius: 16px;
    padding: 12px 18px;
    border: 1px solid transparent;
    gap: 10px;
    box-sizing: border-box;
    width: fit-content;
    max-width: 100%;
}

#taskFeedback.show {
    display: inline-flex;
}

#taskFeedback .feedback-text {
    display: block;
    white-space: normal;
    overflow-wrap: anywhere;
}

#taskFeedback.feedback-info {
    color: #c6ced8;
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.12);
}

#taskFeedback.feedback-error {
    color: #ffd6d6;
    background: linear-gradient(135deg, rgba(255, 76, 76, 0.24), rgba(170, 22, 22, 0.08));
    border-color: rgba(255, 92, 92, 0.5);
}

#taskFeedback.feedback-success {
    color: #d8ffe0;
    background: linear-gradient(135deg, rgba(0, 204, 68, 0.18), rgba(48, 220, 110, 0.08));
    border-color: rgba(92, 243, 140, 0.45);
}

.answer-action-row {
    display: grid;
    grid-template-columns: max-content minmax(0, 1fr);
    align-items: center;
    column-gap: 16px;
    margin-top: 12px;
}

.rs-feedback-icon {
    width: 18px !important;
    height: 18px !important;
    min-width: 18px !important;
    min-height: 18px !important;
    max-width: 18px !important;
    max-height: 18px !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 18px;
    overflow: hidden;
    vertical-align: middle;
    align-self: flex-start;
    margin-top: 2px;
}

.rs-feedback-icon svg {
    width: 18px !important;
    height: 18px !important;
    min-width: 18px !important;
    min-height: 18px !important;
    max-width: 18px !important;
    max-height: 18px !important;
    display: block !important;
    flex: 0 0 18px !important;
}
#taskFeedback .rs-feedback-icon-error {
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(255, 107, 107, 0.42);
}

@keyframes successPop {
    0% { transform: scale(0.95); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

#taskAnswer,
textarea#taskAnswer {
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: var(--border-radius);
    color: var(--text-color);
    padding: 10px 12px;
}

input.rs-task-answer-input {
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: var(--border-radius);
    color: var(--text-color);
    padding: 10px 12px;
    width: 15%;
    min-width: 120px;
    height: 2em;
    vertical-align: top;
}

textarea.rs-task-answer-input {
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: var(--border-radius);
    color: var(--text-color);
    padding: 10px 12px;
}

textarea.rs-task-answer-input.rs-task-answer-input--multiline {
    width: 100%;
    min-width: 240px;
    max-width: 100%;
    min-height: 7.5em;
    height: auto;
    resize: vertical;
}

input.rs-task-answer-input:focus,
textarea.rs-task-answer-input:focus {
    outline: none;
    border-color: var(--info-color);
}

.number-pair-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.number-pair-row label {
    min-width: 110px;
}

#taskAnswerDiv .number-pair-row--stacked {
    flex-direction: column;
    align-items: stretch !important;
    gap: 6px;
    width: 100%;
    flex: 0 0 100%;
}

#taskAnswerDiv .number-pair-row--stacked label {
    min-width: 0;
    width: 100%;
}

#taskAnswerDiv .number-pair-row--stacked .clozeWrapper {
    width: 100%;
}

.rs-task-unit {
    display: inline;
}

#taskAnswer:focus,
textarea#taskAnswer:focus {
    outline: none;
    border-color: var(--info-color);
}

#taskAnswerDiv input.rs-task-input-valid,
#taskAnswerDiv textarea.rs-task-input-valid,
#taskAnswerDiv select.rs-task-input-valid,
#taskAnswerDiv .rs-custom-select-trigger.rs-task-input-valid {
    border-color: rgba(92, 243, 140, 0.62) !important;
    background: linear-gradient(135deg, rgba(0, 204, 68, 0.16), rgba(48, 220, 110, 0.08)) !important;
}

#taskAnswerDiv select.rs-task-input-valid {
    background-color: var(--bg-tertiary) !important;
    background-image: linear-gradient(135deg, rgba(0, 204, 68, 0.16), rgba(48, 220, 110, 0.08)) !important;
}

#taskAnswerDiv input.rs-task-input-invalid,
#taskAnswerDiv textarea.rs-task-input-invalid,
#taskAnswerDiv select.rs-task-input-invalid,
#taskAnswerDiv .rs-custom-select-trigger.rs-task-input-invalid {
    border-color: rgba(255, 92, 92, 0.62) !important;
    background: linear-gradient(135deg, rgba(255, 76, 76, 0.24), rgba(170, 22, 22, 0.08)) !important;
}

#taskAnswerDiv select.rs-task-input-invalid {
    background-color: var(--bg-tertiary) !important;
    background-image: linear-gradient(135deg, rgba(255, 76, 76, 0.24), rgba(170, 22, 22, 0.08)) !important;
}

#taskAnswerDiv label.rs-task-option-valid {
    background: linear-gradient(135deg, rgba(0, 204, 68, 0.16), rgba(48, 220, 110, 0.08));
    border: 1px solid rgba(92, 243, 140, 0.45);
    border-radius: var(--border-radius);
    padding: 4px 8px;
    display: inline-block;
}

#taskAnswerDiv label.rs-task-option-invalid {
    background: linear-gradient(135deg, rgba(255, 76, 76, 0.24), rgba(170, 22, 22, 0.08));
    border: 1px solid rgba(255, 92, 92, 0.45);
    border-radius: var(--border-radius);
    padding: 4px 8px;
    display: inline-block;
}

#taskAnswerDiv input[type="checkbox"].rs-task-input-valid,
#taskAnswerDiv input[type="radio"].rs-task-input-valid {
    outline: 2px solid rgba(92, 243, 140, 0.6);
    outline-offset: 1px;
}

#taskAnswerDiv input[type="checkbox"].rs-task-input-invalid,
#taskAnswerDiv input[type="radio"].rs-task-input-invalid {
    outline: 2px solid rgba(255, 92, 92, 0.62);
    outline-offset: 1px;
}

#taskInfo {
    font-size: 0.95em;
    line-height: 1.6;
    background: var(--bg-secondary);
    padding: var(--gap-sm);
    border-radius: var(--border-radius);
    margin-bottom: var(--gap-sm);
    overflow-wrap: anywhere;
}

#taskInfo > *,
#laboratory > * {
    max-width: 100%;
}

#taskInfo img,
#laboratory img,
#taskInfo video,
#laboratory video,
#taskInfo iframe,
#laboratory iframe,
#taskInfo canvas,
#laboratory canvas,
#taskInfo svg,
#laboratory svg {
    max-width: 100%;
    height: auto;
}

#taskInfo table,
#laboratory table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

#taskInfo [style*="display:flex"],
#laboratory [style*="display:flex"] {
    flex-wrap: wrap !important;
    max-width: 100% !important;
}

#taskInfo [style*="flex:0 0"],
#laboratory [style*="flex:0 0"] {
    flex: 1 1 100% !important;
    width: 100% !important;
    min-width: 0 !important;
}

.step7-info-layout {
    display: grid;
    grid-template-columns: minmax(320px, 1.15fr) minmax(260px, 0.85fr);
    gap: 14px;
    align-items: start;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 12px;
    padding: 12px;
}

.step7-info-panel {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 12px;
    padding: 12px;
}

.step7-info-values {
    display: grid;
    gap: 8px;
}

.step7-info-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.step7-info-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 8px 10px;
}

.step7-info-hypothesis {
    margin-top: 3px;
    color: var(--text-color);
    white-space: pre-wrap;
}

.step7-info-visual {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.step7-info-image {
    width: 100%;
    max-width: 560px;
    height: auto;
    display: block;
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}

@media (max-width: 1100px) {
    .step7-info-layout {
        grid-template-columns: 1fr;
    }

    .step7-info-visual {
        order: -1;
    }

    .step7-info-image {
        max-width: 680px;
    }
}

.progressbar-wrap {
    width: 100%;
    background: rgba(255,255,255,0.08);
    border-radius: 999px;
    height: 6px;
    overflow: hidden;
}

#taskProgress {
    width: 0%;
    height: 100%;
    background: var(--info-color);
    border-radius: 999px;
    transition: width var(--transition-speed);
}

#helpInline {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--gap);
    border: 1px solid rgba(255,255,255,0.06);
    margin-top: var(--gap-sm);
}

.rs-slide-image-button {
    width: 100%;
    margin: 0;
    padding: 0;
    border: 1px solid rgba(146, 218, 255, 0.26);
    border-radius: 16px;
    background: rgba(10, 24, 48, 0.55);
    overflow: hidden;
    cursor: zoom-in;
}

.rs-slide-image {
    display: block;
    width: 100%;
    min-height: 220px;
    max-height: 340px;
    object-fit: contain;
    background: transparent;
    border-radius: 12px;
    clip-path: none;
    transform: none;
}

.rs-slide-image-overlay {
    position: fixed;
    inset: 0;
    z-index: 30000;
    display: none;
}

.rs-slide-image-overlay.is-open {
    display: block;
}

.rs-slide-image-overlay-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(3, 8, 20, 0.82);
}

.rs-slide-image-overlay-dialog {
    position: absolute;
    inset: clamp(10px, 2.4vw, 28px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.rs-slide-image-overlay-img {
    max-width: min(96vw, 1680px);
    max-height: min(92vh, 1080px);
    object-fit: contain;
    border-radius: 10px;
    border: 1px solid rgba(175, 222, 255, 0.34);
    background: #081329;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.rs-slide-image-overlay-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 38px;
    height: 38px;
    border: 1px solid rgba(176, 228, 255, 0.5);
    border-radius: 10px;
    background: rgba(10, 26, 52, 0.9);
    color: #e8f6ff;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
}

.rs-mini-popup {
    position: fixed;
    inset: 0;
    z-index: 28000;
    display: none;
}

.rs-mini-popup.is-open {
    display: block;
}

.rs-mini-popup-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(3, 10, 24, 0.72);
}

.rs-mini-popup-card {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(440px, calc(100vw - 28px));
    background: linear-gradient(165deg, #13244a 0%, #0f1b36 100%);
    border: 1px solid rgba(126, 193, 255, 0.36);
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 22px 60px rgba(0, 0, 0, 0.45);
}

.rs-mini-popup-title {
    margin: 0 0 6px;
    color: #ecf7ff;
    font-size: 1.02rem;
}

.rs-mini-popup-text {
    margin: 0;
    color: #cfe3ff;
    line-height: 1.4;
}

.rs-mini-popup-input {
    width: 100%;
    margin-top: 12px;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid rgba(130, 191, 255, 0.44);
    background: rgba(8, 19, 42, 0.9);
    color: #eef8ff;
}

.rs-mini-popup-actions {
    margin-top: 12px;
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.rs-mini-popup-btn {
    min-width: 98px;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid rgba(126, 193, 255, 0.4);
    background: #14315b;
    color: #e8f4ff;
    cursor: pointer;
}

.rs-mini-popup-cancel {
    background: rgba(15, 31, 60, 0.9);
}

.rs-session-success-popup {
    position: fixed;
    inset: 0;
    z-index: 28500;
    display: none;
}

.rs-session-success-popup.is-open {
    display: block;
}

.rs-session-success-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(5, 14, 30, 0.78);
}

.rs-session-success-card {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(760px, calc(100vw - 24px));
    max-height: min(86vh, 920px);
    overflow: auto;
    border-radius: 14px;
    border: 1px solid rgba(126, 193, 255, 0.42);
    background: linear-gradient(165deg, #152a57 0%, #0c1c3b 100%);
    box-shadow: 0 30px 72px rgba(0, 0, 0, 0.52);
    padding: 16px;
}

.rs-session-success-title {
    margin: 0;
    color: #edf7ff;
    font-size: 1.15rem;
}

.rs-session-success-text {
    margin: 8px 0 0;
    color: #cfe3ff;
    line-height: 1.45;
}

.rs-session-success-summary {
    margin-top: 12px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.rs-session-success-item {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    border: 1px solid rgba(136, 198, 255, 0.22);
    border-radius: 8px;
    padding: 7px 10px;
    background: rgba(11, 22, 44, 0.6);
    color: #deefff;
    font-size: 0.9rem;
}

.rs-session-success-item strong {
    color: #ffffff;
    font-weight: 700;
}

.rs-session-success-actions {
    margin-top: 14px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.rs-session-success-btn,
.rs-session-success-close {
    border: 1px solid rgba(126, 193, 255, 0.48);
    border-radius: 8px;
    background: #154173;
    color: #f2f9ff;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 0.9rem;
}

.rs-session-success-btn:hover,
.rs-session-success-close:hover {
    background: #1a4f8a;
}

.rs-session-success-close-row {
    margin-top: 8px;
    display: flex;
    justify-content: flex-end;
}

.rs-session-success-confetti {
    position: fixed;
    inset: 0;
    z-index: 28600;
    pointer-events: none;
    display: none;
}

@media (max-width: 860px) {
    .rs-session-success-summary {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .rs-slide-image-overlay-dialog {
        inset: 12px;
    }

    .rs-slide-image-overlay-img {
        max-width: 96vw;
        max-height: 88vh;
    }
}

@media (max-width: 640px) {
    .rs-slide-image-overlay-dialog {
        inset: 8px;
    }

    .rs-slide-image-overlay-img {
        max-width: 98vw;
        max-height: 84vh;
        border-radius: 8px;
    }

    .rs-slide-image-overlay-close {
        top: 6px;
        right: 6px;
        width: 34px;
        height: 34px;
        font-size: 1.25rem;
    }
}

#helpButtonContainer {
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
    margin-bottom: var(--gap-sm);
}

.help-nav-btn {
    width: 100%;
    text-align: center;
    padding: 10px 16px;
    min-height: 42px;
}

#taskHelpButtons,
#taskKnowButtons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: var(--gap-sm) 0;
}

#taskHelpText,
#taskKnowText {
    padding: var(--gap);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    margin-top: var(--gap-sm);
    min-height: 40px;
    line-height: 1.7;
}

#taskGlossary {
    margin-top: var(--gap-sm);
}

#glossarySearch {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.16);
    border-radius: var(--border-radius);
    color: var(--text-color);
    padding: 10px 12px;
    min-height: 42px;
}

#glossarySearch:focus {
    outline: none;
    border-color: var(--info-color);
    box-shadow: 0 0 0 2px rgba(92, 243, 255, 0.18);
}

#glossaryList {
    margin-top: var(--gap-sm);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.glossary-item {
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.glossary-item-title {
    cursor: pointer;
    padding: 12px 14px;
    font-weight: 500;
    user-select: none;
}

.glossary-item-content {
    border-top: 1px solid rgba(255,255,255,0.10);
    padding: 12px 14px;
    line-height: 1.55;
}

.glossary-item-content p {
    margin: 0 0 10px;
}

.glossary-empty {
    padding: var(--gap-sm);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    color: var(--text-muted);
}

#taskAnswerDiv .clozeWrapper {
    width: 100%;
    max-width: 100%;
    min-width: 0;
}

#taskAnswerDiv .clozeWrapper .clozeSelect {
    display: block;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: var(--border-radius);
    color: var(--text-color);
    padding: 10px 12px;
    min-height: 42px;
    height: auto;
    line-height: 1.35;
    white-space: normal;
    overflow-wrap: anywhere;
    color-scheme: dark;
}

#taskAnswerDiv .clozeWrapper .clozeSelect option {
    background-color: var(--bg-tertiary);
    color: var(--text-color);
    white-space: normal;
    overflow-wrap: anywhere;
}

#taskAnswerDiv .clozeWrapper .clozeSelect.rs-native-select-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
    margin: 0;
    padding: 0;
    border: 0;
}

#taskAnswerDiv .rs-custom-select {
    position: relative;
    width: 100%;
    max-width: 100%;
}

#taskAnswerDiv .rs-custom-select-trigger {
    width: 100%;
    min-height: 42px;
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: var(--border-radius);
    background: var(--bg-tertiary);
    color: var(--text-color);
    text-align: left;
    padding: 10px 36px 10px 12px;
    line-height: 1.35;
    white-space: normal;
    overflow-wrap: anywhere;
    cursor: pointer;
    position: relative;
}

#taskAnswerDiv .rs-custom-select-trigger::after {
    content: "▾";
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

#taskAnswerDiv .rs-custom-select.open .rs-custom-select-trigger::after {
    content: "▴";
}

#taskAnswerDiv .rs-custom-select-menu {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 6px);
    z-index: 13150;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 10px;
    box-shadow: 0 12px 24px rgba(0,0,0,0.35);
    max-height: min(52vh, 320px);
    overflow-y: auto;
    padding: 6px;
}

#taskAnswerDiv .rs-custom-select.open .rs-custom-select-menu {
    display: block;
}

#taskAnswerDiv .rs-custom-select-option {
    display: block;
    width: 100%;
    text-align: left;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: var(--text-color);
    padding: 9px 10px;
    margin: 2px 0;
    line-height: 1.35;
    white-space: normal;
    overflow-wrap: anywhere;
    cursor: pointer;
}

#taskAnswerDiv .rs-custom-select-option:hover {
    background: rgba(255,255,255,0.08);
}

#taskAnswerDiv .rs-custom-select-option.selected {
    background: rgba(92, 243, 255, 0.16);
    color: #f3fdff;
}

#taskAnswerDiv .clozeWrapper .clozeSelect:focus {
    outline: none;
    border-color: var(--info-color);
    box-shadow: 0 0 0 2px rgba(92, 243, 255, 0.14);
}

.rs-quiz {
    display: grid;
    gap: 10px;
}

.rs-quiz h4 {
    margin: 0 0 4px 0;
    padding: 10px 12px;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, rgba(92, 243, 255, 0.12), rgba(92, 243, 255, 0.03));
    border: 1px solid rgba(92, 243, 255, 0.25);
    color: #eafcff;
}

.rs-quiz p {
    margin: 0;
    padding: 12px;
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255,255,255,0.1);
}

.rs-quiz p strong {
    display: block;
    margin-bottom: 8px;
    color: #f0f6ff;
}

.rs-quiz .clozeSelect {
    margin-top: 4px;
}

.rs-diagram-task-layout {
    display: grid;
    grid-template-columns: minmax(260px, 1fr) minmax(300px, 1fr);
    gap: 16px;
    align-items: start;
}

.rs-diagram-task-left {
    background: var(--bg-secondary);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--border-radius);
    padding: 12px;
}

.rs-diagram-task-left h4 {
    margin: 0 0 8px 0;
}

.rs-diagram-task-left ol {
    margin: 8px 0 0 18px;
    padding: 0;
}

.rs-diagram-task-left li {
    margin: 10px 0;
}

.rs-diagram-task-left .clozeSelect {
    display: block;
    width: 100%;
    max-width: 420px;
    margin-top: 6px;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: var(--border-radius);
    color: var(--text-color);
    padding: 8px 10px;
}

.rs-point-map-list {
    margin-top: 10px;
    display: grid;
    gap: 8px;
}

.rs-point-map-row {
    display: grid;
    grid-template-columns: 28px 1fr;
    align-items: center;
    gap: 8px;
}

.rs-point-map-index {
    color: #eaf2ff;
    font-weight: 600;
    font-size: 0.92em;
}

.rs-point-map-row .clozeSelect {
    width: 100%;
    min-width: 240px;
    background: #111722;
    border: 1px solid rgba(255,255,255,0.22);
    border-radius: 6px;
    color: #eef3ff;
    padding: 8px 10px;
    font-size: 0.9em;
}

.rs-diagram-task-right {
    background: var(--bg-secondary);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--border-radius);
    padding: 8px;
}

.rs-energy-diagram-box {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 10px;
    padding-top: 12px;
}

.rs-energy-diagram-svg {
    width: 100%;
    height: auto;
    display: block;
}

.rs-energy-diagram-svg .axis {
    stroke: #ffffff;
    stroke-width: 2;
}

.rs-energy-diagram-svg .axis-arrow {
    fill: #ffffff;
    stroke: #ffffff;
    stroke-width: 1;
}

.rs-energy-diagram-svg .axis-rkd {
    fill: #ffffff;
    font-size: 14px;
    font-weight: 600;
}

.rs-energy-diagram-svg .axis-label {
    fill: #ffffff;
    font-size: 20px;
    font-weight: 600;
}

.rs-energy-diagram-svg .curve {
    fill: none;
    stroke: #5cf3ff;
    stroke-width: 3;
}

.rs-energy-diagram-svg .pt {
    fill: #ffffff;
}

.rs-energy-diagram-svg .pt-label {
    fill: #ffffff;
    font-size: 13px;
    font-weight: 700;
}

@media (max-width: 980px) {
    .rs-diagram-task-layout {
        grid-template-columns: 1fr;
    }

    .rs-point-map-row .clozeSelect {
        min-width: 0;
    }
}

#dataSection {
    margin-top: 2px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
}

#scatter,
#3Dscatter {
    min-width: 0;
}

#scatter .js-plotly-plot,
#3Dscatter .js-plotly-plot,
#scatter .plot-container,
#3Dscatter .plot-container,
#scatter .svg-container,
#3Dscatter .svg-container,
#scatter .main-svg,
#3Dscatter .main-svg,
#3Dscatter .gl-container,
#3Dscatter #scene {
    width: 100% !important;
    max-width: 100% !important;
}

#scatter,
#3Dscatter,
#divtable {
    border-radius: var(--border-radius);
    overflow: hidden;
    width: 100%;
    max-width: 100%;
}

#divtable {
    overflow-x: auto;
}

#divtable .dataTables_scrollBody {
    height: 340px !important;
    min-height: 220px;
}

@media (max-width: 980px) {
    #divtable .dataTables_scrollBody {
        height: 240px !important;
        min-height: 180px;
    }
}

#orcaSidebar {
    position: fixed;
    right: 0;
    top: 0;
    height: 100vh;
    width: 720px;
    max-width: 96vw;
    background: var(--bg-secondary);
    transform: translateX(100%);
    transition: transform var(--transition-speed) ease;
    z-index: 14000;
    display: flex;
    flex-direction: column;
    box-shadow: -4px 0 20px rgba(0,0,0,0.5);
}

#orcaSidebar.open { transform: translateX(0); }

#helpSidebar {
    position: fixed;
    right: 0;
    top: 0;
    height: 100vh;
    width: 460px;
    max-width: 90vw;
    background: var(--bg-secondary);
    transform: translateX(100%);
    transition: transform var(--transition-speed) ease;
    z-index: 14001;
    display: flex;
    flex-direction: column;
    box-shadow: -4px 0 20px rgba(0,0,0,0.5);
}

#helpSidebar.open { transform: translateX(0); }

#analyticsSidebar {
    position: fixed;
    right: 0;
    top: 0;
    height: 100vh;
    width: 380px;
    max-width: 92vw;
    background: var(--bg-secondary);
    transform: translateX(100%);
    transition: transform var(--transition-speed) ease;
    z-index: 14002;
    display: flex;
    flex-direction: column;
    box-shadow: -4px 0 20px rgba(0,0,0,0.5);
}

#analyticsSidebar.open { transform: translateX(0); }

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--gap);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

#orcaClose {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 24px;
    cursor: pointer;
    padding: 4px 8px;
}

#helpSidebarClose {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 24px;
    cursor: pointer;
    padding: 4px 8px;
}

#analyticsSidebarClose {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 24px;
    cursor: pointer;
    padding: 4px 8px;
}

.analytics-sidebar-body {
    padding: var(--gap);
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
}

.analytics-metric {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
    padding: 8px 10px;
    border-radius: 8px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    font-size: 0.9em;
}

.analytics-metric strong {
    text-align: right;
    word-break: break-word;
    color: #ffffff;
}

.analytics-metric-group-title {
    justify-content: flex-start;
    font-weight: 500;
    background: rgba(92,243,255,0.08);
    border-color: rgba(92,243,255,0.25);
}

.analytics-metric-level {
    margin-left: 8px;
}

.analytics-summary-reporting {
    margin-top: 6px;
    padding-top: 8px;
    border-top: 1px solid rgba(255,255,255,0.12);
}

.analytics-summary-root {
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    background: rgba(255,255,255,0.03);
    overflow: hidden;
}

.analytics-summary-root > summary {
    cursor: pointer;
    list-style: none;
    padding: 8px 10px;
}

.analytics-summary-root > summary::-webkit-details-marker {
    display: none;
}

.analytics-summary-root > summary h5 {
    margin: 0;
    font-size: 0.95em;
    font-weight: 600;
}

.analytics-summary-root[open] > summary {
    background: rgba(255,255,255,0.06);
}

.analytics-summary-list {
    padding: 8px 10px 10px;
}

.analytics-step-reporting {
    margin-top: 6px;
    padding-top: 8px;
    border-top: 1px solid rgba(255,255,255,0.12);
}

.analytics-event-reporting {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.12);
}

.analytics-step-reporting h5 {
    margin: 0 0 8px;
    font-size: 0.95em;
    font-weight: 600;
}

.analytics-event-reporting h5 {
    margin: 0 0 8px;
    font-size: 0.95em;
    font-weight: 600;
}

.analytics-step-report-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

#analyticsNotesCurrent {
    display: inline-block;
    max-width: 100%;
    white-space: normal;
    word-break: break-word;
}

.analytics-steps-root {
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    background: rgba(255,255,255,0.03);
    overflow: hidden;
}

.analytics-steps-root > summary {
    cursor: pointer;
    padding: 8px 10px;
    font-weight: 600;
    list-style: none;
}

.analytics-steps-root > summary::-webkit-details-marker {
    display: none;
}

.analytics-steps-root[open] > summary {
    background: rgba(92,243,255,0.1);
}

.analytics-steps-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 8px 10px 10px;
}

.analytics-step-item {
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    background: rgba(255,255,255,0.03);
    overflow: hidden;
}

.analytics-step-item summary {
    cursor: pointer;
    padding: 8px 10px;
    font-weight: 500;
    list-style: none;
}

.analytics-step-item summary::-webkit-details-marker {
    display: none;
}

.analytics-step-item[open] summary {
    background: rgba(92,243,255,0.08);
}

.analytics-step-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 8px 10px 10px;
}

.analytics-step-field {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 0.84em;
}

.analytics-step-field strong {
    color: rgba(210,210,210,0.95);
    font-weight: 600;
}

.analytics-step-field span {
    color: rgba(242,242,242,0.95);
    word-break: break-word;
}

.analytics-step-list {
    margin: 0;
    padding-left: 18px;
}

.analytics-step-list li {
    margin: 2px 0;
}

.analytics-event-log {
    margin-top: 10px;
}

.analytics-events-root {
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    background: rgba(255,255,255,0.03);
    overflow: hidden;
}

.analytics-events-root > summary {
    cursor: pointer;
    padding: 8px 10px;
    font-weight: 600;
    list-style: none;
}

.analytics-events-root > summary::-webkit-details-marker {
    display: none;
}

.analytics-events-root[open] > summary {
    background: rgba(255,179,71,0.12);
}

.analytics-events-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 8px 10px 10px;
}

.analytics-event-item {
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 6px;
    background: rgba(255,255,255,0.02);
}

.analytics-event-item summary {
    cursor: pointer;
    padding: 7px 9px;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.analytics-event-item summary::-webkit-details-marker {
    display: none;
}

.analytics-event-name {
    font-size: 0.84em;
    color: rgba(245,245,245,0.98);
    word-break: break-word;
}

.analytics-event-time {
    font-size: 0.74em;
    color: rgba(200,200,200,0.8);
    white-space: nowrap;
}

.analytics-event-params {
    padding: 0 9px 9px;
}

.analytics-event-param-list {
    margin: 0;
    padding-left: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.analytics-event-param-list li {
    font-size: 0.78em;
    color: rgba(230,230,230,0.94);
    line-height: 1.35;
    word-break: break-word;
}

.analytics-export-actions {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.12);
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.analytics-export-btn {
    flex: 1;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.06);
    color: rgba(245,245,245,0.98);
    border-radius: 8px;
    padding: 7px 10px;
    font-size: 0.82em;
    font-weight: 600;
    cursor: pointer;
}

.analytics-export-btn:hover {
    background: rgba(92,243,255,0.16);
    border-color: rgba(92,243,255,0.45);
}

.analytics-heatmap-status {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 6px 10px;
    font-size: 0.75em;
    font-weight: 700;
    letter-spacing: 0.01em;
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(240,245,255,0.95);
    background: rgba(255,255,255,0.06);
}

.analytics-heatmap-status--ok {
    color: #c8ffde;
    border-color: rgba(89, 223, 144, 0.65);
    background: rgba(45, 139, 84, 0.28);
}

.analytics-heatmap-status--low {
    color: #ffe8b8;
    border-color: rgba(255, 189, 89, 0.65);
    background: rgba(145, 108, 40, 0.28);
}

.analytics-heatmap-status--off {
    color: #d8deea;
    border-color: rgba(160, 170, 192, 0.45);
    background: rgba(82, 91, 114, 0.28);
}

#orcaSidebar #orcaOutput {
    flex: 1;
    overflow-y: auto;
    padding: var(--gap);
}

#orcaSidebar #energy_information {
    display: block;
    margin: var(--gap) var(--gap) 0;
    padding: 14px;
    border-radius: var(--border-radius);
    background: #060a12;
    border: 1px solid rgba(125, 170, 255, 0.22);
}

#orcaSidebar .energy-information-intro {
    margin: 0 0 10px;
    line-height: 1.45;
    color: #f2f6ff;
    font-weight: 500;
}

#orcaSidebar #energy_formula {
    margin: 8px 0 14px;
    padding: 8px 10px;
    border-radius: 8px;
    background: rgba(8, 18, 36, 0.8);
    border: 1px solid rgba(120, 170, 255, 0.18);
    overflow-x: auto;
}

#orcaSidebar .energy-information-list {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

#orcaSidebar .energy-information-list p {
    margin: 0;
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    line-height: 1.35;
}

#orcaSidebar .energy-information-list span {
    color: #f0f4ff;
    max-width: 66%;
}

#orcaSidebar .energy-information-list strong {
    color: #ffffff;
    text-align: right;
    white-space: nowrap;
}

#orcaSidebar .energy-information-list .energy-information-highlight span,
#orcaSidebar .energy-information-list .energy-information-highlight strong {
    color: #58deff;
}

#divtable table.dataTable tbody tr td {
    color: #dce6f2 !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
}

#divtable table.dataTable.stripe tbody tr.odd td,
#divtable table.dataTable.display tbody tr.odd td {
    background-color: #151a2a !important;
}

#divtable table.dataTable.stripe tbody tr.even td,
#divtable table.dataTable.display tbody tr.even td {
    background-color: #101526 !important;
}

#divtable table.dataTable,
#divtable .dataTables_wrapper,
#divtable .dataTables_scrollBody,
#divtable .dataTables_scrollHead {
    background: #0f1424 !important;
}

#divtable .dataTables_wrapper {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
}

#divtable table.dataTable thead th,
#divtable table.dataTable thead td {
    color: #eef3ff !important;
    background-color: #121a31 !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12) !important;
    font-size: 0.95em;
    line-height: 1.35;
    font-weight: 500;
    padding: 10px 10px !important;
    white-space: normal;
    word-break: keep-all;
    vertical-align: middle;
    text-align: center;
}

#helpSidebar .sidebar-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--gap);
}

#outfile {
    width: 100%;
    min-height: 200px;
    border: none;
    background: var(--bg-primary);
    font-size: 13px;
    padding: var(--gap);
    overflow: auto;
    color: var(--text-color);
    font-family: 'Courier New', monospace;
    border-radius: var(--border-radius);
    white-space: pre-wrap;
    word-break: break-all;
}

#orcaSidebar #orcaOutput,
#helpSidebar .sidebar-body {
    overflow-x: hidden;
}

body.orca-active::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 13998;
}

body.help-active::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.35);
    z-index: 13999;
}

.table-energy table { background: var(--bg-primary); border: none; width: 100%; }
table { border-collapse: collapse; width: 100%; }
#divtable tr.clicked td { color: var(--bg-secondary) !important; background-color: var(--info-color) !important; }
#divtable table.dataTable tbody tr.rs-hovered:not(.clicked) td {
    color: #ecf6ff !important;
    background-color: rgba(92, 243, 255, 0.22) !important;
}

#gallerySection {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: var(--gap-lg);
    margin-bottom: var(--gap);
}

.gallery-controls {
    display: flex;
    align-items: center;
    gap: var(--gap);
    margin-bottom: var(--gap);
}

.tab-buttons { display: flex; gap: 4px; margin-bottom: var(--gap-sm); }

.tablinks {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-color);
    padding: 6px 14px;
    cursor: pointer;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.tabcontent {
    display: none;
    padding: var(--gap);
    background: var(--bg-secondary);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

.file-input input[type="file"] { opacity: 0; width: 0.1px; height: 0.1px; position: absolute; }
.file-input label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 200px;
    height: 50px;
    border-radius: var(--border-radius);
    background-color: var(--accent-color);
    font-size: 0.9em;
    color: var(--text-color);
    cursor: pointer;
}

@media (max-width: 768px) {
    #app { padding: var(--gap-sm); }
    .top-bar { flex-direction: column; gap: var(--gap-sm); text-align: center; padding: 10px 12px; }
    .top-bar-actions { justify-content: center; }
    .system-switcher {
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 10px;
    }
    .system-switcher select {
        min-width: 100%;
    }
    #workbenchArea,
    #taskSection,
    #gallerySection {
        padding: 14px;
    }
    #workbenchArea,
    #taskSection {
        padding-top: 72px;
    }
    .workbench-top-actions,
    .task-top-actions {
        top: 12px;
        left: 14px;
        right: 14px;
    }
    .data-panel {
        min-height: unset;
        padding: 12px;
    }
    #controlSection {
        margin-top: 8px;
        padding-top: 10px;
    }
    .control-buttons,
    .control-options {
        gap: 8px;
    }
    .control-buttons {
        grid-template-columns: 1fr 1fr;
    }
    #stepNav {
        flex-wrap: wrap;
        gap: 8px;
        padding: 10px 8px;
    }
    #stepNavBottom {
        flex-wrap: wrap;
        gap: 8px;
        padding: 10px 8px;
    }
    .step-arrow {
        min-width: 84px;
        font-size: 0.82em;
        min-height: 40px;
        padding: 8px 10px;
    }
    #stepIndicator {
        font-size: 0.86em;
        min-width: 84px;
    }
    #stepIndicatorBottom {
        font-size: 0.86em;
        min-width: 84px;
    }
    .step-jump-menu {
        min-width: 260px;
        max-width: 92vw;
        max-height: 260px;
    }
    .step-jump-item {
        font-size: 0.84em;
        padding: 8px 9px;
    }
    #taskSection { padding: 14px; }
    #helpButtonContainer { flex-direction: column; }
    .data-toggles {
        flex-direction: column;
        gap: 8px;
    }
    .data-toggle-label {
        min-height: 40px;
        padding: 8px 10px;
    }
    input[type="button"],
    button.help-nav-btn,
    button.step-arrow,
    .top-bar-btn {
        min-height: 40px;
    }
    #taskAnswer,
    textarea#taskAnswer {
        width: 100% !important;
    }
    #taskAnswerDiv select,
    #taskAnswerDiv .clozeSelect {
        width: 100% !important;
        min-width: 0 !important;
        max-width: 100% !important;
    }
    input.rs-task-answer-input,
    textarea.rs-task-answer-input {
        width: 100% !important;
        min-width: 0 !important;
    }
    #taskSection #taskFeedback {
        margin-left: 0 !important;
    }
    #taskInfo {
        font-size: 0.92em;
    }
    #scatter,
    #3Dscatter {
        min-height: 260px;
    }
    #divtable table.dataTable {
        min-width: 520px;
    }
    #JSMol { height: 320px; }
    #JSMol #jmol_1_appletinfotablediv {
        height: 44vh !important;
        min-height: 260px;
    }
    #orcaSidebar,
    #helpSidebar,
    #analyticsSidebar {
        width: 100vw;
        max-width: 100vw;
    }
    #orcaSidebar .sidebar-header,
    #helpSidebar .sidebar-header,
    #analyticsSidebar .sidebar-header,
    #orcaSidebar #energy_information,
    #orcaSidebar #orcaOutput,
    #helpSidebar .sidebar-body,
    #analyticsSidebar .sidebar-body {
        padding: 12px;
    }

    #orcaSidebar #energy_information {
        margin: 12px 12px 0;
    }

    #orcaSidebar .energy-information-list p {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    #orcaSidebar .energy-information-list span,
    #orcaSidebar .energy-information-list strong {
        max-width: 100%;
        text-align: left;
        white-space: normal;
    }
}

@media (max-width: 980px) {
    #taskAnswerDiv .rs-custom-select-menu {
        max-height: min(56vh, 360px);
    }
}

@media (max-width: 970px) {
    #app {
        padding: 12px;
    }

    #workbenchArea,
    #taskSection {
        padding: 12px;
        padding-top: 54px;
    }

    .workbench-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .system-switcher {
        flex-wrap: wrap;
        align-items: stretch;
        gap: 6px;
    }

    .system-switcher label {
        width: 100%;
    }

    .system-switcher select {
        width: 100%;
        min-width: 0;
        flex: 1 1 100%;
    }

    .viewer-panel,
    .data-panel {
        min-height: 0;
    }

    #JSMol {
        height: clamp(250px, 44vh, 380px);
        max-height: 52vh;
    }

    #JSMol #jmol_1_appletinfotablediv {
        height: clamp(250px, 44vh, 380px) !important;
    }

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

    .control-buttons input[type="button"] {
        width: 100%;
        min-width: 0;
        padding: 9px 10px;
    }

    .control-options {
        gap: 8px;
    }

    .checkbox-container {
        font-size: 0.86em;
    }

    #dataSection {
        margin-top: 0;
    }

    #scatter,
    #3Dscatter {
        min-height: 260px;
    }

    #divtable table.dataTable {
        min-width: 640px;
    }

    #stepNav,
    #stepNavBottom {
        gap: 10px;
        padding: 10px;
        flex-wrap: wrap;
    }

    .step-arrow {
        min-width: 100px;
    }
}

@media (max-width: 480px) {
    #app { padding: 10px; }
    .site-title { font-size: 1.05em; }
    .top-bar-actions {
        width: 100%;
        flex-direction: column;
        gap: 8px;
    }
    .top-bar-btn {
        width: 100%;
        padding: 8px 12px;
    }
    .workbench-top-actions .top-bar-btn,
    .task-top-actions .top-bar-btn {
        width: auto;
    }
    #stepNav {
        flex-wrap: wrap;
    }
    #stepIndicator {
        order: 3;
        width: 100%;
        min-width: 100%;
        margin-top: 2px;
    }
    #stepIndicatorBottom {
        order: 3;
        width: 100%;
        min-width: 100%;
        margin-top: 2px;
    }
    .step-arrow {
        flex: 1;
        min-width: 120px;
    }
    .control-buttons {
        grid-template-columns: 1fr;
    }
    #JSMol { height: 260px; }
    #JSMol #jmol_1_appletinfotablediv {
        height: 40vh !important;
        min-height: 220px;
    }
}

/* Final feedback spacing overrides to avoid external CSS conflicts */
#taskSection .answer-action-row {
    margin-top: 14px !important;
    display: grid !important;
    grid-template-columns: max-content minmax(0, 1fr) !important;
    column-gap: 18px !important;
    align-items: center !important;
}

#taskSection #taskFeedback {
    margin-left: 0 !important;
    gap: 10px !important;
    padding: 12px 18px !important;
    border-radius: 16px !important;
    max-width: 100% !important;
}

#taskSection .rs-feedback-icon {
    margin-top: 2px !important;
}