/* LyricEx overlays & modals (split from styles.css, v2.0.5): about, changelog,
   settings (+ schema & theme custom controls), first-visit guide, search,
   share card, video export and share template buttons. */
/* =========================== ABOUT MODAL =========================== */
.about-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.about-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
.about-modal {
    background: var(--bg-secondary);
    color: var(--text-primary);
    max-width: 700px;
    width: 92%;
    max-height: 80vh;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
/* v2.0.0: about modal restructured into a side sub-nav + scrollable body,
   mirroring the settings modal layout. */
.about-main {
    flex: 1;
    display: flex;
    min-height: 0;
    overflow: hidden;
}
.about-subnav {
    width: 150px;
    flex-shrink: 0;
}
.about-body {
    flex: 1;
    overflow-y: auto;
    padding: 28px 30px 16px;
    min-width: 0;
}
.about-section {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 14px;
}
.about-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.about-section h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.about-section p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}
.about-section a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}
.about-section a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}
.brand-section {
    text-align: left;
}
.brand-section .logo-icon {
    font-size: 32px;
    color: var(--accent);
    display: block;
    margin-bottom: 4px;
}
.brand-section h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}
.brand-section h2 span {
    color: var(--accent);
}
.brand-section .version {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}
.brand-section .slogan {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}
/* v3.2.1: developer e-mail line in 关于 (was inline font/color/margin) */
.about-mail {
    font-size: 13px;
    color: var(--text-muted);
}
.about-mail i {
    margin-right: 4px;
}
.tech-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.tech-list li {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 2px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}
.tech-list li .tech-icon {
    width: 18px;
    color: var(--text-muted);
    text-align: center;
    flex-shrink: 0;
    font-size: 14px;
}
.shortcut-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.shortcut-list li {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-secondary);
    padding: 4px 0;
    border-bottom: 1px solid var(--border-color);
}
.shortcut-list li:last-child {
    border-bottom: none;
}
.shortcut-list .key {
    background: var(--bg-hover);
    padding: 0 10px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-weight: 600;
}
.disclaimer .small-text {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-top: 2px;
}
.about-footer {
    flex-shrink: 0;
    padding: 12px 30px 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    background: var(--bg-secondary);
    transition:
        background var(--transition),
        border-color var(--transition);
}
.about-footer .close-btn {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    padding: 6px 28px;
    font-size: 14px;
    cursor: pointer;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
    font-family: var(--font);
}
.about-footer .close-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}

/* =========================== CHANGELOG MODAL (v2.0.0) =========================== */
.changelog-modal {
    max-width: 640px;
}
.changelog-title {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 30px 10px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}
.changelog-title .cl-only-zh {
    font-size: 11px;
    font-weight: 400;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    padding: 0 6px;
}
/* v3.5.2: changelog version filter row + "show more" button */
.cl-filter {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 30px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 13px;
}
.cl-filter input {
    flex: 1;
    min-width: 0;
    padding: 6px 10px;
    font-size: 13px;
    color: var(--text-primary);
    background: var(--bg-input, var(--bg-secondary));
    border: 1px solid var(--border-color);
    border-radius: 6px;
    outline: none;
}
.cl-filter input:focus {
    border-color: var(--accent);
}
.cl-more {
    display: block;
    margin: 4px auto 14px;
    padding: 6px 18px;
    font-size: 13px;
    color: var(--text-secondary);
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
}
.cl-more:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.cl-more.hidden {
    display: none;
}
.changelog-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px 30px 8px;
}
.cl-entry {
    border-bottom: 1px solid var(--border-color);
    padding: 14px 0;
}
.cl-entry:last-child {
    border-bottom: none;
}
.cl-head {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 8px;
}
.cl-version {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
}
.cl-date {
    font-size: 12px;
    color: var(--text-muted);
}
.cl-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.cl-item {
    display: flex;
    gap: 8px;
    align-items: baseline;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    padding: 1px 0;
}
.cl-tag {
    flex-shrink: 0;
    font-size: 11px;
    font-weight: 600;
    padding: 0 6px;
    border-radius: 3px;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-family: var(--font);
}
.cl-tag.added {
    color: #3a7d44;
    border-color: rgba(58, 125, 68, 0.4);
}
.cl-tag.fixed {
    color: #b0652a;
    border-color: rgba(176, 101, 42, 0.4);
}
.cl-tag.changed {
    color: #4a6fa5;
    border-color: rgba(74, 111, 165, 0.4);
}
.cl-tag.removed {
    color: #b0423c;
    border-color: rgba(176, 66, 60, 0.4);
}
.cl-tag.breaking {
    color: #a3389c;
    border-color: rgba(163, 56, 156, 0.4);
}
.cl-tag.test {
    color: #6a6a6a;
    border-color: rgba(106, 106, 106, 0.4);
}
.cl-text {
    min-width: 0;
}
.cl-empty {
    color: var(--text-muted);
    font-size: 14px;
    padding: 20px 0;
    text-align: center;
}
[data-theme='dark'] .cl-tag.added {
    color: #7fc98a;
}
[data-theme='dark'] .cl-tag.fixed {
    color: #e09a5b;
}
[data-theme='dark'] .cl-tag.changed {
    color: #8fb3e0;
}
[data-theme='dark'] .cl-tag.removed {
    color: #e07b73;
}
[data-theme='dark'] .cl-tag.breaking {
    color: #d58cd0;
}
[data-theme='dark'] .cl-tag.test {
    color: #b0b0b0;
}

/* =========================== SETTINGS MODAL =========================== */
.settings-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.settings-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
.settings-modal {
    background: var(--bg-secondary);
    color: var(--text-primary);
    max-width: 600px;
    width: 92%;
    /* v1.6.0: fixed height so the modal never grows/shrinks when switching
       panels — the body scrolls instead */
    height: 600px;
    max-height: 88vh;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.settings-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    transition: border-color var(--transition);
}
.settings-tab {
    flex: 1;
    padding: 12px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    font-family: var(--font);
    transition:
        background var(--transition),
        color var(--transition);
    border-bottom: 2px solid transparent;
    text-align: center;
}
.settings-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}
.settings-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}
.settings-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px 28px 16px;
    min-width: 0;
}
/* v1.6.1: settings-main splits the modal into a vertical sub-nav (left, pure
   navigation) and the scrollable body (right, scrolls through all sections) */
.settings-main {
    flex: 1;
    display: flex;
    min-height: 0;
    overflow: hidden;
}
.settings-subnav {
    width: 150px;
    flex-shrink: 0;
    border-right: 1px solid var(--border-color);
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
    transition: border-color var(--transition);
}
.settings-subnav.hidden {
    display: none;
}
.settings-subnav-item {
    text-align: left;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    font-family: var(--font);
    border-left: 2px solid transparent;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.settings-subnav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}
.settings-subnav-item.active {
    color: var(--accent);
    border-left-color: var(--accent);
    background: var(--accent-bg);
}
.settings-section + .settings-section {
    margin-top: 26px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}
.settings-panel {
    display: none;
}
.settings-panel.active {
    display: block;
}
.settings-panel h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 14px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.color-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.color-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 12px 8px;
    border: 1px solid var(--border-color);
    background: transparent;
    transition:
        border-color var(--transition),
        background var(--transition);
    font-family: var(--font);
}
.color-option:hover {
    border-color: var(--accent);
    background: var(--bg-hover);
}
.color-option.active {
    border-color: var(--accent);
    background: var(--accent-bg);
}
.color-option .swatch {
    width: 48px;
    height: 48px;
    border-radius: 50% !important;
    border: 2px solid var(--border-color);
    transition: border-color var(--transition);
}
.color-option .swatch-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}
.lang-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.lang-option {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 12px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    font-family: var(--font);
    transition:
        border-color var(--transition),
        background var(--transition),
        color var(--transition);
}
.lang-option:hover {
    border-color: var(--accent);
    background: var(--bg-hover);
    color: var(--text-primary);
}
.lang-option.active {
    border-color: var(--accent);
    background: var(--accent-bg);
    color: var(--text-primary);
}
.settings-footer {
    flex-shrink: 0;
    padding: 12px 28px 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    background: var(--bg-secondary);
    transition:
        background var(--transition),
        border-color var(--transition);
}
.settings-footer .close-btn {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    padding: 6px 28px;
    font-size: 14px;
    cursor: pointer;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
    font-family: var(--font);
}
.settings-footer .close-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}

/* =========================== FIRST-VISIT GUIDE (v1.6.4) =========================== */
.guide-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.guide-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
.guide-modal {
    background: var(--bg-secondary);
    color: var(--text-primary);
    max-width: 520px;
    width: 92%;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.guide-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px 0;
}
.guide-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}
.guide-counter {
    font-size: 12px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}
.guide-body {
    padding: 20px 24px 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    text-align: center;
    min-height: 210px;
    justify-content: center;
}
.guide-body .guide-icon {
    font-size: 44px;
    color: var(--accent);
}
.guide-body .guide-step-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}
.guide-body .guide-step-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 400px;
}
.guide-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 14px 0 4px;
}
.guide-dots .dot {
    width: 8px;
    height: 8px;
    background: var(--border-color);
    transition: background var(--transition);
}
.guide-dots .dot.active {
    background: var(--accent);
}
.guide-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 14px 24px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    transition:
        background var(--transition),
        border-color var(--transition);
}
.guide-footer #guidePrevBtn {
    margin-right: auto;
}
.guide-btn {
    padding: 7px 20px;
    font-size: 14px;
    cursor: pointer;
    font-family: var(--font);
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.guide-btn.ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.guide-btn.ghost:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}
.guide-btn.primary {
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
}
.guide-btn.primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

/* =========================== V1.5.0: SETTINGS SCHEMA CONTROLS =========================== */
.settings-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 14px;
    line-height: 1.6;
}
#appearanceFonts,
#appearanceSizes,
#lyricsControls,
#generalControls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 18px;
}
/* v1.6.3: sidebar-visibility checkboxes auto-flow into 2–3 columns so the
   General panel stays compact; the heading spans the full row. */
#sidebarControls {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 6px 16px;
    margin-top: 18px;
}
#sidebarControls h4 {
    grid-column: 1 / -1;
}
.setting-row {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 32px;
}
.setting-row .setting-label {
    flex: 1;
    font-size: 13px;
    color: var(--text-secondary);
}
.setting-row select,
.setting-row input[type='text'] {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 5px 8px;
    font-size: 13px;
    font-family: var(--font);
    min-width: 0;
    transition: border-color var(--transition);
}
.setting-row input[type='text'] {
    flex: 1.4;
}
.setting-row select {
    flex: 1.4;
}
.setting-row select:focus,
.setting-row input[type='text']:focus {
    border-color: var(--accent);
    outline: none;
}
.setting-row input[type='range'] {
    flex: 1.4;
    min-width: 0;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--progress-bg);
    outline: none;
    cursor: pointer;
    transition: background var(--transition);
}
.setting-row input[type='range']::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border: none;
    cursor: pointer;
}
.setting-row input[type='range']::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent);
    border: none;
    cursor: pointer;
}
.setting-row input[type='range']::-moz-range-track {
    height: 4px;
    background: transparent;
}
.setting-row input[type='checkbox'] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}
.setting-row .setting-value {
    min-width: 64px;
    text-align: right;
    font-size: 12px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}
.keycap {
    min-width: 76px;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-hover);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition:
        border-color var(--transition),
        background var(--transition),
        color var(--transition);
}
.keycap:hover {
    border-color: var(--accent);
}
.keycap.capturing {
    border-color: var(--accent);
    background: var(--accent-bg);
    color: var(--accent);
    animation: keycap-pulse 1s ease-in-out infinite;
}
@keyframes keycap-pulse {
    50% {
        opacity: 0.55;
    }
}
.sidebar-status .no-audio-tag {
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 2px;
}
.settings-footer .danger-btn {
    color: #c0392b;
    border-color: #c0392b;
    margin-right: auto;
}
.settings-footer .danger-btn:hover {
    background: rgba(192, 57, 43, 0.08);
    color: #c0392b;
}

/* =========================== V1.6.0: THEME CUSTOM CONTROLS =========================== */
#themeControls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 18px;
}
.theme-control-row {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 30px;
}
.theme-control-row .setting-label {
    flex: 1;
    font-size: 13px;
    color: var(--text-secondary);
}
.theme-control-row input[type='color'] {
    width: 44px;
    height: 26px;
    padding: 0 2px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    cursor: pointer;
}
.theme-control-row .mini-btn {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-muted);
    font-size: 11px;
    padding: 4px 10px;
    cursor: pointer;
    font-family: var(--font);
    transition:
        color var(--transition),
        border-color var(--transition);
}
.theme-control-row .mini-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent);
}
.theme-preset-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
    margin-top: 4px;
}
.preset-row-line {
    display: flex;
    gap: 8px;
    align-items: center;
}
.theme-preset-row select,
.theme-preset-row input[type='text'] {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 5px 8px;
    font-size: 13px;
    font-family: var(--font);
    transition: border-color var(--transition);
}
.theme-preset-row select {
    flex: 1.6;
    min-width: 0;
}
.theme-preset-row input[type='text'] {
    flex: 1;
    min-width: 110px;
}
.theme-preset-row select:focus,
.theme-preset-row input[type='text']:focus {
    border-color: var(--accent);
    outline: none;
}
/* v1.6.1: real buttons for preset save/delete (previous mini-btn look was
   inconsistent with the rest of the UI) */
.preset-btn {
    border-radius: 6px;
    padding: 7px 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font);
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition),
        opacity var(--transition);
}
.preset-save-btn {
    flex: 1;
    background: var(--accent);
    border: 1px solid var(--accent);
    color: #fff;
}
.preset-save-btn:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}
.preset-del-btn {
    background: transparent;
    border: 1px solid rgba(192, 57, 43, 0.55);
    color: #c0392b;
}
.preset-del-btn:hover:not(:disabled) {
    background: rgba(192, 57, 43, 0.08);
}
.preset-del-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* =========================== SEARCH (v1.7.0) =========================== */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    z-index: 1050;
    padding-top: 12vh;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}
.search-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
.search-modal {
    background: var(--bg-secondary);
    color: var(--text-primary);
    width: min(640px, 92%);
    max-height: 70vh;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.search-input-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
}
.search-input-row > i {
    color: var(--text-muted);
    font-size: 16px;
}
.search-input-row input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 16px;
    font-family: var(--font);
}
.search-count {
    font-size: 12px;
    color: var(--text-muted);
    min-width: 24px;
    text-align: right;
}
.search-results {
    flex: 1;
    overflow-y: auto;
    padding: 6px 0;
}
.search-result {
    padding: 10px 16px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 3px;
}
.search-result.selected {
    background: var(--bg-hover);
}
.search-result .sr-line {
    font-size: 16px;
    font-family: var(--font-lyrics);
}
.search-result .sr-trans {
    font-size: 13px;
    color: var(--text-secondary);
    font-family: var(--font-translation);
}
.search-empty {
    padding: 24px 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}
.search-hint {
    padding: 9px 16px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-muted);
}
.search-results mark {
    background: var(--accent-bg);
    color: var(--accent);
    border-radius: 2px;
    padding: 0 1px;
}

/* =========================== SHARE CARD (v1.7.0) =========================== */
.share-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.share-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
.share-modal {
    background: var(--bg-secondary);
    color: var(--text-primary);
    width: min(760px, 94%);
    max-height: 88vh;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.share-preview {
    background: var(--bg-hover);
    padding: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.share-preview img {
    max-width: 100%;
    max-height: 40vh;
    border-radius: 8px;
    box-shadow: var(--shadow);
}
.share-controls {
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    border-top: 1px solid var(--border-color);
    overflow-y: auto;
}
.share-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.share-row > label {
    font-size: 13px;
    color: var(--text-secondary);
    min-width: 72px;
}
.share-row select,
.share-row textarea {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 8px;
    font-size: 13px;
    font-family: var(--font);
}
.share-row textarea {
    flex: 1;
    min-width: 220px;
    font-family: var(--font-mono);
    resize: vertical;
}
.share-row input[type='color'] {
    width: 42px;
    height: 30px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: transparent;
    padding: 0;
    cursor: pointer;
}
.share-checks {
    gap: 20px;
}
.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
}
.share-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
}

/* =========================== VIDEO EXPORT (v1.7.0) =========================== */
.video-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.video-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
.video-modal {
    background: var(--bg-secondary);
    color: var(--text-primary);
    width: min(440px, 92%);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
    padding: 22px 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.video-modal h4 {
    font-size: 16px;
}
.video-progress {
    height: 6px;
    background: var(--progress-bg);
    border-radius: 3px;
    overflow: hidden;
}
.video-progress-fill {
    height: 100%;
    width: 0%;
    background: var(--progress-fill);
    transition: width 0.2s linear;
}
.video-status {
    font-size: 13px;
    color: var(--text-secondary);
    min-height: 18px;
}
.video-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}
/* v2.0.5: the video modal's two buttons used .close-btn, but no rule was
   scoped to .video-footer, so they fell back to the browser default look */
.video-footer .close-btn {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    padding: 6px 16px;
    font-size: 13px;
    cursor: pointer;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
    font-family: var(--font);
}
.video-footer .close-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}
.video-footer .close-btn#videoStartBtn {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.video-footer .close-btn#videoStartBtn:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}
.video-footer .close-btn:disabled {
    opacity: 0.6;
    cursor: default;
}

/* =========================== v2.0.0: SHARE TEMPLATE + PRINT =========================== */
.share-tpl-btns {
    gap: 8px;
    justify-content: flex-start;
}
.share-footer .close-btn,
.share-tpl-btns .close-btn {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    padding: 6px 16px;
    font-size: 13px;
    cursor: pointer;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
    font-family: var(--font);
}
.share-footer .close-btn:hover,
.share-tpl-btns .close-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}

/* =========================== v2.1.1: COVER VIEWER =========================== */
.cover-viewer {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.78);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.cover-viewer.open {
    opacity: 1;
    pointer-events: auto;
}
.cover-viewer img {
    max-width: 86vw;
    max-height: 84vh;
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}
.cover-viewer-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    font-family: var(--font);
}
.cover-viewer-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* =========================== v2.1.1: SONG LIBRARY =========================== */
.library-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.library-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
.library-modal {
    position: relative;
    background: var(--bg-secondary);
    color: var(--text-primary);
    max-width: 520px;
    width: 92%;
    max-height: 80vh;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
    border-radius: 12px;
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow: hidden;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.library-modal h4 {
    margin: 0;
    font-size: 16px;
}
.library-list {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.library-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
}
.library-item-info {
    flex: 1;
    min-width: 0;
}
.library-item-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.library-item-meta {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.5;
}
.library-item-btn {
    flex-shrink: 0;
    border: 1px solid var(--accent);
    background: transparent;
    color: var(--accent);
    padding: 5px 14px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    font-family: var(--font);
    transition:
        background var(--transition),
        color var(--transition);
}
.library-item-btn:hover {
    background: var(--accent);
    color: #fff;
}
.library-status {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    padding: 8px;
}
.library-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}
.library-footer .close-btn {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    padding: 6px 16px;
    font-size: 13px;
    cursor: pointer;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
    font-family: var(--font);
}
.library-footer .close-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}

.library-item-links {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
}
.library-item-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: var(--accent);
    text-decoration: none;
    border: 1px solid var(--border-color);
    padding: 2px 8px;
    transition:
        border-color var(--transition),
        background var(--transition);
}
.library-item-link:hover {
    border-color: var(--accent);
    background: var(--accent-bg);
}
.library-item-link i {
    font-size: 11px;
}

/* v2.9.3: multi-source chooser overlays the modal */
.library-source-pop {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.library-source-pop[hidden] {
    display: none;
}
.library-source-pop-title {
    font-size: 14px;
    font-weight: 600;
    margin: 0;
}
.library-source-pop-list {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.library-source-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
    font-family: var(--font);
    font-size: 13px;
    text-align: left;
    transition: border-color var(--transition);
}
.library-source-btn:hover {
    border-color: var(--accent);
}
.library-source-file {
    font-size: 11px;
    color: var(--text-muted);
    word-break: break-all;
}

/* =========================== v2.3.1: LANGUAGE DRAWER ===========================
   Language picking moved from an inline grid to a compact second-level drawer
   so a growing language list never crowds the general settings panel. */
.lang-current-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.lang-current-row .setting-label {
    font-weight: 500;
    color: var(--text-primary);
}
.lang-change-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    font-family: var(--font);
    transition:
        border-color var(--transition),
        color var(--transition);
}
.lang-change-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}
.lang-drawer {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1100; /* above the settings overlay (z-index 1000) */
    width: min(320px, 80vw);
    max-height: 60vh;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
    padding: 12px;
    flex-direction: column;
}
.lang-drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2px 4px 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}
.lang-drawer-close {
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
}
.lang-drawer-close:hover {
    color: var(--text-primary);
}
.lang-list {
    overflow-y: auto;
    max-height: calc(60vh - 50px);
    display: flex;
    flex-direction: column;
    gap: 2px;
}
/* v3.5.0: AI-maintained translation disclaimer under the language list */
.lang-drawer-notice {
    margin: 10px 4px 2px;
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
    font-size: 11px;
    line-height: 1.5;
    color: var(--text-muted);
}
/* drawer rows override the old inline-grid .lang-option look */
.lang-list .lang-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    font-family: var(--font);
    text-align: left;
    transition:
        background var(--transition),
        color var(--transition);
}
.lang-list .lang-option:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}
.lang-list .lang-option.active {
    background: var(--accent-bg);
    color: var(--text-primary);
}
.lang-check {
    display: none;
    color: var(--accent);
}
.lang-list .lang-option.active .lang-check {
    display: inline-flex;
}

/* unloaded language rows: dimmed hint that picking them fetches on demand */
.lang-list .lang-option.lang-pending {
    opacity: 0.65;
}
.lang-list .lang-option.lang-pending:hover {
    opacity: 1;
}

/* =========================== v2.3.3: GUIDE GLOBE ===========================
   First-run language switch sits bottom-left inside the onboarding overlay;
   it opens the same language drawer as the settings row. */
.guide-globe {
    position: absolute;
    left: 16px;
    bottom: 16px;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 17px;
    cursor: pointer;
    z-index: 6;
    display: flex;
    align-items: center;
    justify-content: center;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.guide-globe:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}
.lang-not-reset {
    margin: 2px 0 10px;
    font-size: 12px;
}

/* =========================== v2.8.1: DIALOG (alert/confirm/prompt) ===========================
   One reusable native-style dialog replacing window.alert/confirm/prompt.
   Mirrors the settings/about modal look: backdrop blur + footer close-btns. */
.dialog-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    /* above settings/share (1000) and the guide/lang drawer (1100) */
    z-index: 1200;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.dialog-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
.dialog-modal {
    background: var(--bg-secondary);
    color: var(--text-primary);
    width: min(400px, 90vw);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
    padding: 22px 24px 8px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.dialog-message {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    word-break: break-word;
}
/* v3.2.1: busy spinner shown while the update check fetches */
.dialog-message .dialog-spinner {
    display: inline-block;
    width: 15px;
    height: 15px;
    margin-right: 9px;
    vertical-align: -3px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: dialog-spin 0.8s linear infinite;
}
@keyframes dialog-spin {
    to {
        transform: rotate(360deg);
    }
}
/* v3.2.1: update-found dialog — wide split layout */
.dialog-message.dialog-html {
    color: var(--text-primary);
    font-size: 13px;
}
.dialog-modal:has(.dialog-html) {
    width: min(640px, 92vw);
}
.update-head {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}
.update-head .fas {
    color: var(--accent);
}
.update-mock-tag {
    margin-left: auto;
    font-size: 11px;
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 9px;
    padding: 1px 8px;
}
.update-body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 190px;
    gap: 14px;
    margin-top: 12px;
}
.update-col-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--text-tertiary);
    margin-bottom: 6px;
}
.update-notes-scroll {
    max-height: 240px;
    overflow-y: auto;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
    color: var(--text-secondary);
    line-height: 1.75;
}
.update-side {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.update-meta {
    font-size: 12px;
    color: var(--text-tertiary);
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.update-meta code {
    font-size: 11px;
    color: var(--text-secondary);
    word-break: break-all;
}
.update-api summary {
    cursor: pointer;
    font-size: 12px;
    color: var(--text-secondary);
}
.update-api pre {
    margin-top: 6px;
    font-size: 10px;
    line-height: 1.5;
    max-height: 120px;
    overflow: auto;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-card);
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-all;
}
.update-current {
    margin-top: 10px;
    font-size: 11px;
    color: var(--text-tertiary);
}
@media (max-width: 560px) {
    .update-body {
        grid-template-columns: 1fr;
    }
    .update-side {
        order: 2;
    }
}
.setting-row.setting-disabled {
    opacity: 0.5;
}
.setting-row.setting-disabled select {
    cursor: not-allowed;
}
.dialog-input-row input[type='text'] {
    width: 100%;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 8px 10px;
    font-size: 14px;
    font-family: var(--font);
    box-sizing: border-box;
    transition: border-color var(--transition);
}
.dialog-input-row input[type='text']:focus {
    border-color: var(--accent);
    outline: none;
}
.dialog-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 4px 0 14px;
}
.dialog-footer .close-btn {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    padding: 6px 28px;
    font-size: 14px;
    cursor: pointer;
    font-family: var(--font);
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.dialog-footer .close-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}
.dialog-footer .dialog-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.dialog-footer .dialog-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}
.dialog-footer .dialog-danger {
    background: transparent;
    color: #c0392b;
    border-color: #c0392b;
}
.dialog-footer .dialog-danger:hover {
    background: rgba(192, 57, 43, 0.08);
    color: #c0392b;
    border-color: #c0392b;
}

/* =========================== v2.4.1: SETTING ICONS =========================== */
.setting-label i {
    margin-right: 8px;
    width: 16px;
    text-align: center;
    color: var(--accent);
    font-size: 13px;
    flex-shrink: 0;
}
.theme-control-row .setting-label i {
    margin-right: 8px;
}
.danger-btn i {
    margin-right: 6px;
}

/* =========================== v3.3.0: UNIFIED EXPORT DIALOG =========================== */
.export-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.export-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
.export-modal {
    background: var(--bg-secondary);
    color: var(--text-primary);
    width: min(880px, 94%);
    height: min(640px, 88vh);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
    display: flex;
    flex-direction: column;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.export-head {
    padding: 16px 20px 10px;
    border-bottom: 1px solid var(--border-color);
}
.export-head h4 {
    font-size: 16px;
    margin: 0 0 4px;
}
.export-head h4 i {
    color: var(--accent);
    margin-right: 8px;
}
.export-head .small-text {
    margin: 0;
    font-size: 12px;
    color: var(--text-secondary);
}
.export-main {
    display: flex;
    flex: 1;
    min-height: 0;
}
.export-subnav {
    width: 178px;
    flex-shrink: 0;
    border-right: 1px solid var(--border-color);
    padding: 10px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
}
.export-nav-group {
    font-size: 11px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 10px 12px 4px;
    font-weight: 700;
}
.export-subnav-item {
    text-align: left;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    font-family: var(--font);
    border-left: 2px solid transparent;
    display: flex;
    align-items: center;
    gap: 8px;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}
.export-subnav-item i {
    width: 15px;
    text-align: center;
    font-size: 12px;
    flex-shrink: 0;
}
.export-subnav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}
.export-subnav-item.active {
    color: var(--accent);
    border-left-color: var(--accent);
    background: var(--accent-bg);
}
.export-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding: 14px 18px;
    gap: 12px;
    overflow: hidden;
}
.export-action-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-align: center;
    color: var(--text-secondary);
}
.export-action-icon {
    font-size: 34px;
    color: var(--accent);
    opacity: 0.85;
}
.export-action-panel h5 {
    margin: 0;
    font-size: 15px;
    color: var(--text-primary);
}
.export-action-desc {
    margin: 0 0 8px;
    font-size: 12px;
    max-width: 360px;
    line-height: 1.5;
}
.export-run-btn {
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #fff;
    padding: 7px 26px;
    font-size: 13px;
    cursor: pointer;
    font-family: var(--font);
    border-radius: 4px;
    transition:
        background var(--transition),
        border-color var(--transition);
}
.export-run-btn:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}
.export-config {
    flex-shrink: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}
.export-preview {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    background: var(--bg-card);
}
.export-preview-head {
    padding: 6px 12px;
    font-size: 11px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.export-preview-content {
    flex: 1;
    min-height: 0;
    overflow: auto;
    padding: 14px;
    transition: opacity 0.15s ease;
}
.export-preview-content.export-preview-loading {
    opacity: 0.55;
}
.export-preview-empty {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 13px;
}
/* v3.3.1: form items — config controls + text preview + run button */
.export-config {
    padding: 4px 2px 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-shrink: 0;
}
.export-cfg-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
}
.export-cfg-row input[type='checkbox'] {
    accent-color: var(--accent);
    width: 14px;
    height: 14px;
    cursor: pointer;
}
.export-cfg-row input[type='number'] {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
    padding: 3px 6px;
}
.export-cfg-row select {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
    padding: 3px 6px;
    cursor: pointer;
}
.export-form-foot {
    flex-shrink: 0;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
}
.export-form-foot .export-run-btn {
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #fff;
    padding: 7px 26px;
    font-size: 13px;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font);
}
.export-text-preview {
    margin: 0;
    font-family: var(--font-mono, Consolas, 'Courier New', monospace);
    font-size: 12px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-all;
    color: var(--text-primary);
}
.export-html-preview {
    width: 100%;
    height: 100%;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #fff;
}
.export-video-preview {
    width: 100%;
    max-height: 240px;
    object-fit: contain;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
}
.export-card-preview {
    display: block;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #fff;
}
.export-empty {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 13px;
}
.export-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 10px 18px;
    border-top: 1px solid var(--border-color);
}
.export-footer .close-btn {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    padding: 6px 16px;
    font-size: 13px;
    cursor: pointer;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
    font-family: var(--font);
}
.export-footer .close-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}
@media (max-width: 720px) {
    .export-modal {
        width: 96%;
        height: 92vh;
    }
    .export-subnav {
        width: 128px;
    }
}