/*!
 * eXeLearning v4 Spectrum 128K Style
 * ----------------------------------
 * Author: Área de Tecnología Educativa · Consejería de Educación, FP y
 *         Actividad Física del Gobierno de Canarias
 * Project: eXeLearning.net
 * License: Creative Commons CC0 1.0 Universal
 *
 * A retro re-skin inspired by the Sinclair ZX Spectrum 128K:
 * rainbow stripes, BRIGHT palette, pixel typography, subtle CRT scanlines.
 *
 * Note: config.xml lists third-party assets (fonts, icons) included here.
 */

@charset "UTF-8";

/* -------------------------------------------------------------------------
   Fonts
   ------------------------------------------------------------------------- */
@font-face {
    font-family: "VT323";
    src: url(fonts/VT323-Regular.woff2) format("woff2");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: "JetBrains Mono";
    src: url(fonts/JetBrainsMono-Regular.woff2) format("woff2");
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

/* -------------------------------------------------------------------------
   Theme tokens
   ------------------------------------------------------------------------- */
:root {
    /* Spectrum BRIGHT palette */
    --sp-black:     #000000;
    --sp-blue:      #0000D7;
    --sp-red:       #D70000;
    --sp-magenta:   #D700D7;
    --sp-green:     #00D700;
    --sp-cyan:      #00D7D7;
    --sp-yellow:    #D7D700;
    --sp-white:     #FFFFFF;

    /* Normal (non-bright) ink */
    --sp-blue-d:    #0000A8;
    --sp-cyan-d:    #00A8A8;
    --sp-magenta-d: #A800A8;

    /* Semantic roles (light / paper mode is default for exports) */
    --bg:           #FFFFFF;
    --bg-alt:       #F4F4F0;
    --ink:          #101010;
    --ink-dim:      #404048;
    --ink-faint:    #707078;
    --border:       var(--sp-blue);
    --border-soft:  #C8C8E0;
    --link:         var(--sp-magenta-d);
    --link-hover:   var(--sp-blue);
    --accent:       var(--sp-magenta-d);
    --accent-2:     var(--sp-blue);

    /* Typography */
    --font-pixel: "VT323", ui-monospace, "Cascadia Mono", "Courier New", monospace;
    --font-mono:  "JetBrains Mono", ui-monospace, "Cascadia Mono", "Menlo", monospace;

    /* Layout */
    --stripe-h: 6px;

    /* Stripe gradient — overridable by body.spectrum-stripes-*
       Default is 128K: repeating diagonal stripes like the logo,
       so the slant is visible on any strip size. */
    --stripe-gradient: repeating-linear-gradient(
        120deg,
        var(--sp-red)    0    24px,
        var(--sp-yellow) 24px 48px,
        var(--sp-green)  48px 72px,
        var(--sp-cyan)   72px 96px
    );
}

/* 48K preset — 4 vertical colour bars (like the narrow side stripe
   of the original 48K rubber-key model). */
body.spectrum-stripes-48k {
    --stripe-gradient: linear-gradient(
        to right,
        var(--sp-red)    0    25%,
        var(--sp-yellow) 25%  50%,
        var(--sp-green)  50%  75%,
        var(--sp-cyan)   75% 100%
    );
}

/* Monochrome preset — greys */
body.spectrum-stripes-mono {
    --stripe-gradient: linear-gradient(
        to right,
        #FFFFFF 0    25%,
        #A8A8A8 25%  50%,
        #707070 50%  75%,
        #383838 75% 100%
    );
}

/* Pixel-everywhere: applies VT323 to body text too */
body.spectrum-pixel-all,
body.spectrum-pixel-all .exe-content,
body.spectrum-pixel-all .exe-content p,
body.spectrum-pixel-all .exe-content li,
body.spectrum-pixel-all .exe-content td,
body.spectrum-pixel-all .exe-content th {
    font-family: var(--font-pixel);
    font-size: 18px;
    line-height: 1.45;
}

/* -------------------------------------------------------------------------
   Common body / content styles
   ------------------------------------------------------------------------- */
body.exe-export {
    background: var(--bg);
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 1.65;
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.exe-content {
    font-family: var(--font-mono);
    line-height: 1.6;
    font-size: 15px;
    color: var(--ink);
}

body.exe-export input,
body.exe-export select,
body.exe-export textarea {
    font-family: var(--font-mono);
    font-size: 1em;
}
body.exe-export button {
    font-family: var(--font-pixel);
}
body#tinymce {
    font-family: var(--font-mono);
    line-height: 1.6;
    font-size: 15px;
}
.exe-content p { margin: 1em 0; text-wrap: pretty; }
.exe-content a {
    color: var(--link);
    text-decoration: underline;
    text-underline-offset: 3px;
}
.exe-content a:hover,
.exe-content a:focus {
    color: var(--link-hover);
    text-decoration: none;
    background: color-mix(in srgb, var(--sp-yellow) 60%, transparent);
}
.box-content a { text-decoration: underline; }
.box-content a:hover { text-decoration: none; }
.box-content a:focus { text-decoration: underline; }
.box-content a:focus-visible { --bs-focus-ring-color: var(--sp-magenta); }

/* Headings use the pixel font for retro chrome */
.exe-content h1,
.exe-content h2,
.exe-content h3,
.exe-content h4,
.exe-content h5,
.exe-content h6 {
    font-family: var(--font-pixel);
    font-weight: normal;
    letter-spacing: 0.3px;
    line-height: 1.15;
    margin: 1.2em 0 0.4em;
    color: var(--accent-2);
}

/* -------------------------------------------------------------------------
   Page chrome — single-page and export layouts
   ------------------------------------------------------------------------- */
.exe-export .exe-content {
    max-width: 1280px;
    padding: 24px;
    margin: 0 auto;
    position: relative;
    background: var(--bg);
}

/* The iconic rainbow stripe at the top of each page */
.exe-export .exe-content::before {
    content: "";
    display: block;
    height: var(--stripe-h);
    margin: -24px -24px 20px;
    background: var(--stripe-gradient);
}

/* Package header (course-level title) */
.exe-content .package-header {
    color: var(--ink);
    position: relative;
    padding: 10px 14px;
    background: var(--sp-blue);
    color: var(--sp-white);
    border: 2px solid var(--sp-black);
    margin-bottom: 18px;
}
.exe-content .package-header .package-title {
    color: var(--sp-white);
    font-family: var(--font-pixel);
    font-size: 1.8em;
    letter-spacing: 0.5px;
    margin: 0;
    line-height: 1.2;
}
.exe-content .package-subtitle {
    color: var(--sp-yellow);
    font-family: var(--font-pixel);
    font-size: 1.1em;
    margin: 0.2em 0 0;
    opacity: 0.95;
}

body:has(#teacher-mode-toggler-wrapper) .package-title { padding-right: 100px; }
#teacher-mode-toggler-wrapper { float: right; }
body:has(.package-header #darkModeToggler) #teacher-mode-toggler-wrapper { margin-right: 45px; }
#teacher-mode-toggler-wrapper .form-check-input { filter: grayscale(1); }
#teacher-mode-toggler-wrapper .form-check-input:checked {
    filter: grayscale(0);
    background-color: var(--sp-yellow);
    border-color: var(--sp-yellow);
}

/* Page header / title */
.exe-content .page-header {
    color: var(--accent-2);
    padding-top: 22px;
    border-top: 0;
    margin-top: 22px;
    position: relative;
}
.exe-content .page-header::before {
    content: "";
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 3px;
    background: var(--stripe-gradient);
}
.exe-content .page-title {
    font-family: var(--font-pixel);
    font-size: 2.4em;
    color: var(--sp-blue-d);
    margin: 0;
    font-weight: normal;
    letter-spacing: 0.4px;
}

/* Page counter pill */
.exe-content .page-counter {
    position: absolute;
    top: 55px;
    right: 40px;
    background: var(--sp-black);
    color: var(--sp-yellow);
    font-family: var(--font-pixel);
    font-size: 1em;
    letter-spacing: 1px;
    padding: 1px 10px;
    border: 1px solid var(--sp-yellow);
    z-index: 99;
}

/* -------------------------------------------------------------------------
   Boxes / iDevices
   ------------------------------------------------------------------------- */
.exe-content .box {
    border: 2px solid var(--border);
    margin: 22px 0;
    border-radius: 0;
    background: var(--bg);
    box-shadow: 4px 4px 0 var(--sp-magenta);
    position: relative;
}
.exe-content .box-head {
    border: 0;
    background: var(--sp-blue);
    color: var(--sp-white);
    min-height: 56px;
    padding: 8px 14px 8px 12px;
    position: relative;
    border-radius: 0;
    overflow: hidden;
}
/* iconic rainbow ribbon on the right of every box header */
.exe-content .box-head::after {
    content: "";
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: 60px;
    background: var(--stripe-gradient);
    opacity: 0.9;
    pointer-events: none;
}
.exe-content .box-icon {
    float: left;
    margin-right: 12px;
    background: var(--sp-black);
    padding: 3px;
    border: 1px solid var(--sp-white);
}
.exe-content .box-head.no-icon { padding-left: 14px; }
.exe-content .box-icon img {
    width: 46px;
    height: auto;
    scale: 0.9;
    filter: drop-shadow(1px 1px 0 var(--sp-magenta));
}
#node-content-container.exe-content .box-head .exe-icon img {
    max-width: none;
    height: 42px;
    width: auto;
    scale: 1;
    margin-right: -10px;
}

.exe-export .box-title {
    padding-top: 8px;
    color: var(--sp-white);
    font-family: var(--font-pixel);
    font-size: 1.55em;
    font-weight: normal;
    letter-spacing: 0.5px;
    line-height: 1.2;
    margin: 0;
    padding-right: 80px; /* clear the rainbow ribbon */
}

.exe-content .box-content {
    border-top: 2px solid var(--border);
    background: var(--bg);
}
.exe-export .box-content { padding: 18px 22px; }

.exe-export .box-head .box-toggle {
    position: absolute;
    right: 70px; /* avoid rainbow ribbon */
    top: 10px;
    border: 1px solid var(--sp-white);
    display: block;
    background: transparent url(img/icons.png) no-repeat -300px 0;
    background-size: auto 50px;
    width: 40px;
    height: 40px;
    border-radius: 0;
    transition: rotate 0.3s ease;
    filter: invert(1);
    z-index: 1;
}
.exe-content .box.minimized .box-head { border-radius: 0; }
.exe-export .box.minimized .box-head .box-toggle { rotate: -180deg; }
.exe-export .box-head .box-toggle span {
    position: absolute;
    clip: rect(1px 1px 1px 1px);
    clip: rect(1px, 1px, 1px, 1px);
}

/* iDevices with no box head */
.exe-export .box.no-header:not(:has(.box-toggle)) .box-head { display: none; }
.exe-export .box.no-header:not(:has(.box-toggle)) .box-content { border-top: 0; }

/* -------------------------------------------------------------------------
   iDevice / feedback buttons — "cassette keys"
   ------------------------------------------------------------------------- */
.exe-content .iDevice_buttons input,
.exe-content .iDevice_buttons button {
    font-family: var(--font-pixel);
    font-size: 1.1em;
    letter-spacing: 0.5px;
    text-transform: lowercase;
    border: 2px solid var(--sp-black);
    background: var(--sp-yellow);
    color: var(--sp-black);
    padding: 4px 16px 2px;
    margin: 0.5em 6px 0.5em 0;
    box-shadow: 3px 3px 0 var(--sp-magenta);
    border-radius: 0;
    cursor: pointer;
    transition: none;
}
.exe-content .iDevice_buttons input:hover,
.exe-content .iDevice_buttons input:focus,
.exe-content .iDevice_buttons button:hover,
.exe-content .iDevice_buttons button:focus {
    background: var(--sp-cyan);
    color: var(--sp-black);
    outline: none;
}
.exe-content .iDevice_buttons input:active,
.exe-content .iDevice_buttons button:active {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 var(--sp-magenta);
}

/* -------------------------------------------------------------------------
   Quotes, code, tables
   ------------------------------------------------------------------------- */
.exe-content blockquote,
.exe-content .styled-qc {
    border-left: 6px solid var(--sp-magenta);
    padding: 12px 18px;
    background: var(--bg-alt);
    margin: 1em 0;
    font-style: italic;
    position: relative;
}
.exe-content .styled-qc { margin-top: 2em; }

.exe-content .pre-code,
.exe-content .highlighted-code,
.exe-content pre {
    background: var(--sp-black);
    color: var(--sp-white);
    border: 2px solid var(--sp-cyan);
    padding: 14px 18px;
    font-family: var(--font-mono);
    font-size: 0.95em;
    line-height: 1.55;
    border-radius: 0;
    overflow-x: auto;
}
.exe-content code {
    font-family: var(--font-mono);
    background: var(--bg-alt);
    color: var(--sp-magenta-d);
    padding: 0 4px;
    border: 1px solid var(--border-soft);
}

.exe-content table,
.exe-content .exe-table {
    border-collapse: collapse;
    border: 2px solid var(--border);
    font-family: var(--font-mono);
}
.exe-content table th,
.exe-content .exe-table th {
    background: var(--sp-blue);
    color: var(--sp-white);
    font-family: var(--font-pixel);
    font-size: 1.1em;
    font-weight: normal;
    padding: 8px 12px;
    border: 2px solid var(--border);
}
.exe-content table td,
.exe-content .exe-table td {
    padding: 8px 12px;
    border: 2px solid var(--border);
}

/* -------------------------------------------------------------------------
   Effects (accordion, etc.)
   ------------------------------------------------------------------------- */
.exe-content .exe-accordion {
    border: 2px solid var(--border);
    border-radius: 0;
}
.exe-content .fx-accordion-title {
    background: var(--sp-blue);
    background-size: auto 40px;
    border-color: var(--border) !important;
    position: relative;
    color: var(--sp-white);
}
.exe-content .fx-accordion-title:after {
    content: "";
    width: 40px;
    height: 40px;
    display: inline-block;
    position: absolute;
    top: 5px;
    right: 5px;
    background: transparent url(img/icons.png) no-repeat -240px 50%;
    background-size: auto 40px;
    border-color: var(--border) !important;
    opacity: 0.8;
    filter: invert(1);
    transition: all 0.3s ease;
    transform: rotate(180deg);
}
.exe-content .fx-accordion-title:hover:after { opacity: 1; }
.exe-content .fx-accordion-title h2 {
    color: var(--sp-yellow);
    padding-right: 60px;
    font-family: var(--font-pixel);
}
.exe-content .fx-accordion-title.active h2 { color: var(--sp-white); }
.exe-content .fx-accordion-title.active { padding-bottom: 0; }
.exe-content .fx-accordion-title.active:after { transform: rotate(0); }
.fx-accordion-content { color: var(--ink); }

/* -------------------------------------------------------------------------
   Site (multi-page) layout
   ------------------------------------------------------------------------- */
.exe-web-site .exe-content {
    max-width: none;
    padding: 0;
    background: var(--bg);
}
.exe-web-site .main-header,
.exe-web-site .page-content,
.exe-web-site #siteFooterContent {
    max-width: 1280px;
    margin: 0 auto;
}
.exe-web-site .page-content { padding: 0; }

.exe-web-site .exe-content {
    position: relative;
    /* Soft left "column" behind the sidebar — faint off-white */
    box-shadow:
        inset 320px 0 0 0 var(--bg-alt),
        inset 321px 0 0 0 var(--border);
}
.exe-web-site main.page {
    padding-top: 24px;
    padding-left: 340px;
    padding-right: 22px;
    min-height: calc(100vh - 147px);
}
.exe-web-site #siteFooter {
    background: none;
    border: none;
    padding: 0 22px 0 340px;
}
.exe-web-site #siteFooterContent {
    background: var(--sp-blue);
    color: var(--sp-white);
    border: 2px solid var(--sp-black);
    margin: 0 auto;
    padding: 18px 22px;
    font-family: var(--font-pixel);
    border-radius: 0;
}
.exe-web-site #siteFooterContent a {
    color: var(--sp-yellow);
    text-decoration: none;
    border: 1px solid var(--sp-yellow);
    padding: 2px 8px;
}
.exe-web-site #siteFooterContent a:hover,
.exe-web-site #siteFooterContent a:focus {
    background: var(--sp-yellow);
    color: var(--sp-blue);
}

/* Single-page exports use the package header area */
#siteFooter {
    background: var(--bg-alt);
    color: var(--ink);
    padding: 18px;
    border: 2px solid var(--border);
    border-radius: 0;
}
#siteFooter a { color: var(--link); text-decoration: underline; }
#packageLicense {
    text-align: left;
    font-size: 0.9em;
    line-height: 1em;
    margin-bottom: 1em;
}
#packageLicense p { margin: 0; }
#packageLicense .license-label {
    position: absolute;
    clip: rect(1px 1px 1px 1px);
    clip: rect(1px, 1px, 1px, 1px);
}
#packageLicense a {
    color: var(--ink-dim);
    text-transform: capitalize;
    display: inline-block;
    white-space: nowrap;
    text-overflow: ellipsis;
    max-width: 100%;
    overflow: hidden;
    line-height: 15px;
}
#packageLicense a:hover,
#packageLicense a:focus {
    text-decoration: none;
    color: var(--sp-magenta-d);
}
#packageLicense.propietary {
    position: absolute;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    height: 0;
}
#packageLicense.cc { padding: 0 20px 0 90px; background: url(img/licenses.gif) no-repeat 0 0; }
#packageLicensea.cc-by-nd  { background-position: 0 -200px; }
#packageLicense.cc-by-nc   { background-position: 0 -300px; }
#packageLicense.cc-by-nc-sa{ background-position: 0 -400px; }
#packageLicense.cc-by-nc-nd{ background-position: 0 -500px; }
#packageLicense.cc-0       { background-position: 0 -600px; }

/* -------------------------------------------------------------------------
   Breadcrumbs
   ------------------------------------------------------------------------- */
#siteBreadcrumbs {
    font-family: var(--font-pixel);
    font-size: 1.05em;
    color: var(--sp-white);
    text-transform: lowercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}
#siteBreadcrumbs ul { margin: 0; padding: 0; list-style: none; }
#siteBreadcrumbs li { margin: 0; padding: 0; list-style: none; display: inline; }
#siteBreadcrumbs a { color: var(--sp-yellow); text-decoration: none; }
#siteBreadcrumbs a:hover,
#siteBreadcrumbs a:focus { color: var(--sp-white); text-decoration: underline; }
#siteBreadcrumbs a img { position: relative; top: -2px; }
#siteBreadcrumbs a:after {
    content: "/";
    margin: 0 0.5em;
    color: var(--sp-cyan);
}
#exe-index #siteBreadcrumbs { display: none; }
#siteBreadcrumbsHome:hover img,
#siteBreadcrumbsHome:focus img {
    filter: brightness(1.1) saturate(1.1) hue-rotate(350deg);
}
#siteBreadcrumbs strong { font-weight: normal; color: var(--sp-white); opacity: 0.95; }
.package-header.width-breadcrumbs .package-title,
.package-header.width-breadcrumbs .package-subtitle {
    position: absolute;
    clip: rect(1px 1px 1px 1px);
    clip: rect(1px, 1px, 1px, 1px);
}

/* -------------------------------------------------------------------------
   Sidebar navigation
   ------------------------------------------------------------------------- */
#skipNav:focus { top: 4px; }
#sidebar-nav.fixed { position: fixed; }
#siteNav {
    float: left;
    width: 320px;
    font-family: var(--font-pixel);
}
@media (min-width: 576px) {
    #siteNav {
        position: fixed;
        max-height: calc(100vh - 50px);
        overflow-y: auto;
        padding-bottom: 43px;
    }
}
#siteNav .other-section { display: none; }
#siteNav ul { margin: 10px 0 0 10px; padding: 0; list-style: none; }
#siteNav ul ul { margin-top: 4px; }
#siteNav li { margin: 0 0 3px 0; padding: 0; list-style: none; }
#siteNav a {
    color: var(--ink);
    display: block;
    padding: 6px 14px;
    max-width: 300px;
    background: transparent;
    border-left: 4px solid transparent;
    border-radius: 0;
    font-size: 1.15em;
    line-height: 1.25;
    transition: none;
    position: relative;
}
#siteNav a::before {
    content: ">";
    color: var(--ink-faint);
    margin-right: 6px;
    font-family: var(--font-pixel);
}
#siteNav a.active {
    color: var(--sp-white);
    background: var(--accent);
    border-left-color: var(--sp-yellow);
    text-decoration: none;
}
#siteNav a.active::before { content: "\25B6"; color: var(--sp-yellow); }
#siteNav a:hover,
#siteNav a:focus {
    background: var(--sp-blue);
    color: var(--sp-white);
    text-decoration: none;
    box-shadow: none;
}
#siteNav a:hover::before,
#siteNav a:focus::before { color: var(--sp-yellow); }

/* Special / highlighted links */
#siteNav a.highlighted-link {
    background: var(--sp-yellow);
    color: var(--sp-black);
    box-shadow: inset 0 0 0 1px var(--sp-black);
}
#siteNav a.highlighted-link:hover,
#siteNav a.highlighted-link:focus {
    background: var(--sp-cyan);
    color: var(--sp-black);
    box-shadow: inset 0 0 0 1px var(--sp-black);
}

#siteNav ul ul { margin-left: 0; padding-left: 16px; border-left: 1px dashed var(--ink-faint); }
#siteNav ul ul a { padding-left: 30px; font-size: 1.05em; }
#siteNav ul ul ul a { padding-left: 46px; font-size: 1em; }
#siteNav ul ul ul ul a { padding-left: 62px; }

/* Dropdown toggle buttons */
#siteNav a { position: relative; }
#siteNav a:has(button) { padding-right: 35px; }
#siteNav a button {
    width: 20px;
    height: 20px;
    position: absolute;
    right: 10px;
    bottom: 10px;
    border: none;
    background: transparent url(img/icons.png) no-repeat -185px 50%;
    background-size: auto 30px;
    transform: rotate(180deg);
    transition: all 0.3s ease;
    filter: invert(1);
}
#siteNav a button.open-ul { transform: rotate(0); }
#siteNav a button span {
    position: absolute;
    clip: rect(1px 1px 1px 1px);
    clip: rect(1px, 1px, 1px, 1px);
}

/* -------------------------------------------------------------------------
   Top navigation bar (prev / next + toggles)
   ------------------------------------------------------------------------- */
.nav-buttons {
    position: fixed;
    top: 0;
    left: 0;
    height: 50px;
    border: none;
    background: var(--sp-black);
    width: 100%;
    border-bottom: 2px solid var(--sp-cyan);
    z-index: 100;
}
/* Spectrum rainbow stripe underneath the top bar */
.nav-buttons::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -6px;
    height: 4px;
    background: var(--stripe-gradient);
}
.nav-buttons .nav-button-left {
    position: absolute;
    top: 0;
    right: 160px;
    display: block;
    background: transparent url(img/icons.png) no-repeat -100px 0;
    background-size: auto 50px;
    width: 50px;
    height: 50px;
    filter: invert(1);
}
.nav-buttons .nav-button-right {
    position: absolute;
    top: 0;
    right: 110px;
    display: block;
    background: transparent url(img/icons.png) no-repeat -150px 0;
    background-size: auto 50px;
    width: 50px;
    height: 50px;
    filter: invert(1);
}
.nav-buttons span.nav-button {
    opacity: 0.4;
    filter: grayscale(1) invert(1);
    cursor: not-allowed;
}

/* Page counter pinned to the top bar in site mode */
.exe-web-site .page-counter {
    position: fixed;
    top: 0;
    right: 280px;
    z-index: 101;
    margin: 0;
    background: var(--sp-black);
    color: var(--sp-yellow);
    font-family: var(--font-pixel);
    font-size: 17px;
    letter-spacing: 0.5px;
    line-height: 1;
    padding: 4px 10px;
    border: 1px solid var(--sp-yellow);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    top: 10px;
}
.exe-web-site .page-counter .page-counter-label,
.exe-web-site .page-counter .page-counter-content {
    font-family: var(--font-pixel);
    color: inherit;
}
.exe-web-site .page-counter strong { font-weight: normal; color: var(--sp-cyan); }
.exe-web-site .page-counter .page-counter-sep { color: var(--sp-magenta); margin: 0 2px; }
body.exe-web-site { padding-top: 56px; }

/* Visually-hidden helper for screen-reader-only labels.
   The `clip` property is deprecated and does NOT shrink layout, so on mobile
   the ~70-80px label text ("Spectrum tweaks", "(nueva ventana)", etc.)
   extended past the viewport and forced a shrink-to-fit "zoom". The full
   inset-clip-path recipe below actually collapses the box. */
#siteNavToggler span,
#searchBarTogger span,
#darkModeToggler span,
#spectrumTweaksToggler span,
.nav-buttons a span,
.nav-buttons span span,
.toggler > span,
#made-with-eXe a > span,
#made-with-eXe a > span > span {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    clip-path: inset(50%) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Cassette-key base style for every Spectrum toggler on the black top bar */
.exe-web-site #siteNavToggler,
.exe-web-site #searchBarTogger,
.exe-web-site #darkModeToggler,
.exe-web-site #spectrumTweaksToggler {
    position: fixed;
    top: 6px;
    width: 40px;
    height: 38px;
    border: 2px solid var(--sp-black);
    background-repeat: no-repeat;
    background-size: auto 40px;
    background-position: center center;
    z-index: 110;
    cursor: pointer;
    filter: none;
    scale: 1;
    box-shadow: 2px 2px 0 var(--sp-black);
    transition: transform 80ms ease;
}
.exe-web-site #siteNavToggler:active,
.exe-web-site #searchBarTogger:active,
.exe-web-site #darkModeToggler:active,
.exe-web-site #spectrumTweaksToggler:active {
    transform: translate(2px, 2px);
    box-shadow: 0 0 0 var(--sp-black);
}

/* Menu — yellow key on the far left (uses a self-contained SVG "hamburger") */
.exe-web-site #siteNavToggler {
    left: 10px;
    background-color: var(--sp-yellow);
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3' stroke-linecap='square'><line x1='4' y1='7' x2='20' y2='7'/><line x1='4' y1='12' x2='20' y2='12'/><line x1='4' y1='17' x2='20' y2='17'/></svg>");
    background-size: 24px 24px;
    background-position: center center;
}
.exe-web-site #siteNavToggler:hover,
.exe-web-site #siteNavToggler:focus {
    background-color: var(--sp-white);
}

/* Search — cyan key */
.exe-web-site #searchBarTogger {
    left: 56px;
    background-color: var(--sp-cyan);
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3' stroke-linecap='square'><circle cx='11' cy='11' r='6'/><line x1='16' y1='16' x2='21' y2='21'/></svg>");
    background-size: 22px 22px;
    background-position: center center;
}
.exe-web-site #searchBarTogger:hover,
.exe-web-site #searchBarTogger:focus {
    background-color: var(--sp-white);
}

/* Dark mode — sun icon on a yellow key (flips to a moon when dark mode is on) */
.exe-web-site #darkModeToggler {
    right: 60px;
    background-color: var(--sp-yellow);
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000' stroke='%23000' stroke-width='2' stroke-linecap='square'><circle cx='12' cy='12' r='4'/><g stroke-linecap='round' fill='none'><line x1='12' y1='2' x2='12' y2='4'/><line x1='12' y1='20' x2='12' y2='22'/><line x1='2' y1='12' x2='4' y2='12'/><line x1='20' y1='12' x2='22' y2='12'/><line x1='4.9' y1='4.9' x2='6.3' y2='6.3'/><line x1='17.7' y1='17.7' x2='19.1' y2='19.1'/><line x1='4.9' y1='19.1' x2='6.3' y2='17.7'/><line x1='17.7' y1='6.3' x2='19.1' y2='4.9'/></g></svg>");
    background-size: 24px 24px;
    background-position: center center;
}
.exe-web-site #darkModeToggler:hover,
.exe-web-site #darkModeToggler:focus {
    background-color: var(--sp-white);
}

/* Tweaks — magenta key, pinned to the far right */
.exe-web-site #spectrumTweaksToggler {
    right: 10px;
    background-color: var(--sp-magenta);
    background-image: none;
    color: var(--sp-white);
    font-family: var(--font-pixel);
    font-size: 22px;
    line-height: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.exe-web-site #spectrumTweaksToggler::before {
    content: "\2699"; /* gear */
    display: block;
    line-height: 1;
}
.exe-web-site #spectrumTweaksToggler:hover,
.exe-web-site #spectrumTweaksToggler:focus {
    background-color: var(--sp-white);
    color: var(--sp-magenta-d);
}

/* Single-page exports put the dark-mode toggle inside the blue package header */
#darkModeToggler {
    position: absolute;
    right: 10px;
    top: 8px;
    border: 2px solid var(--sp-black);
    display: block;
    background: var(--sp-yellow) url(img/icons.png) no-repeat -205px center;
    background-size: auto 40px;
    width: 40px;
    height: 38px;
    z-index: 100;
    cursor: pointer;
    box-shadow: 2px 2px 0 var(--sp-black);
}
#darkModeToggler:hover,
#darkModeToggler:focus { background-color: var(--sp-white); }
#darkModeToggler:active {
    transform: translate(2px, 2px);
    box-shadow: 0 0 0 var(--sp-black);
}

/* Tweaks button also exists in single-page mode (top-right of package header) */
#spectrumTweaksToggler {
    position: absolute;
    right: 56px;
    top: 8px;
    border: 2px solid var(--sp-black);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sp-magenta);
    width: 40px;
    height: 38px;
    z-index: 100;
    cursor: pointer;
    box-shadow: 2px 2px 0 var(--sp-black);
    color: var(--sp-white);
    font-family: var(--font-pixel);
    font-size: 22px;
    line-height: 1;
    padding: 0;
}
#spectrumTweaksToggler::before { content: "\2699"; display: block; line-height: 1; }
#spectrumTweaksToggler:hover,
#spectrumTweaksToggler:focus { background-color: var(--sp-white); color: var(--sp-magenta-d); }

/* Bigger Next/Previous labels on desktop */
@media (min-width: 768px) {
    /* Restore the previously visually-hidden "anterior"/"siguiente" label
       on desktop. Has to match the !important used by the base hide rule. */
    .nav-buttons a span,
    .nav-buttons span span {
        position: relative !important;
        width: auto !important;
        height: auto !important;
        margin: 0 !important;
        padding: 0 !important;
        overflow: visible !important;
        clip: auto !important;
        clip-path: none !important;
        white-space: normal !important;
        border: 0 !important;
    }
    .nav-buttons .nav-button-left,
    .nav-buttons .nav-button-right {
        width: auto;
        height: 30px;
        top: 10px;
        right: 20px;
        min-width: 120px;
        line-height: 30px;
        background: none;
        filter: none;
        border: 2px solid var(--sp-cyan);
        color: var(--sp-yellow) !important;
        padding: 0;
        text-align: center;
        border-radius: 0;
        font-size: 0.95em;
        font-family: var(--font-pixel);
        letter-spacing: 0.5px;
        text-transform: lowercase;
        transition: background 0.2s ease;
    }
    .nav-buttons a:hover,
    .nav-buttons a:focus {
        text-decoration: none;
        background: var(--sp-magenta);
        color: var(--sp-white) !important;
        border-color: var(--sp-yellow);
    }
    .nav-buttons .nav-button-left  { right: 280px; }
    .nav-buttons .nav-button-right { right: 150px; }
    .exe-web-site #darkModeToggler { right: 60px; }
    .exe-web-site #spectrumTweaksToggler { right: 10px; }
    .exe-web-site .page-counter { right: 420px; }

    /* Prepend/append arrows on the desktop text buttons */
    .nav-buttons .nav-button-left  span::before {
        content: "\25C0";
        margin-right: 6px;
        color: var(--sp-cyan);
    }
    .nav-buttons .nav-button-right span::after {
        content: "\25B6";
        margin-left: 6px;
        color: var(--sp-cyan);
    }
    .nav-buttons a:hover span::before,
    .nav-buttons a:focus span::before,
    .nav-buttons a:hover span::after,
    .nav-buttons a:focus span::after {
        color: var(--sp-yellow);
    }
}

/* Hidden navigation */
html body.exe-web-site.siteNav-off .exe-content { box-shadow: none !important; }
body.siteNav-off #siteNav { display: none; }
body.siteNav-off main.page,
body.siteNav-off #siteFooter { padding-left: 20px; }

/* -------------------------------------------------------------------------
   Search bar
   ------------------------------------------------------------------------- */
button#searchBarTogger { display: none; }
.exe-search-on #searchBarTogger { display: inline; }
#exe-client-search {
    display: none;
    max-width: 1280px;
    margin: -10px auto 0 auto;
    text-align: center;
    margin-bottom: 24px;
}
#exe-client-search-text {
    display: inline;
    max-width: 600px;
    font-family: var(--font-pixel);
    font-size: 1.1em;
    background: var(--sp-black);
    color: var(--sp-yellow);
    border: 2px solid var(--sp-cyan);
    padding: 6px 12px;
    border-radius: 0;
}
#exe-client-search-reset span {
    position: absolute;
    clip: rect(1px 1px 1px 1px);
    clip: rect(1px, 1px, 1px, 1px);
}
#exe-client-search-submit {
    text-indent: -999em;
    background: var(--sp-yellow) url(img/icons.png) no-repeat -41px -1px;
    background-size: auto 40px;
    width: 38px;
    height: 38px;
    border: 2px solid var(--sp-black);
    border-radius: 0;
}
#exe-client-search-reset.visible {
    background: transparent url(img/icons.png) no-repeat -280px -1px;
    background-size: auto 40px;
    width: 38px;
    height: 38px;
    display: inline-block;
    vertical-align: middle;
    position: relative;
    top: -2px;
    left: -5px;
    opacity: 0.7;
    border-radius: 0;
}
#exe-client-search-reset:hover,
#exe-client-search-reset:focus { opacity: 1; }
#exe-client-search-submit:hover,
#exe-client-search-submit:focus { background-color: var(--sp-cyan); }
#exe-client-search-results-list { text-align: left; }
#exe-client-search-results-list ul,
#exe-client-search-results-list li { margin: 2em 0; padding: 0; list-style: none; }
#exe-client-search-results-list li { margin: 0 0 1em 0; }
#exe-client-search-results-list p { margin-top: 2em; }

/* -------------------------------------------------------------------------
   Scrollbar
   ------------------------------------------------------------------------- */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: var(--bg-alt); }
*::-webkit-scrollbar-thumb {
    background: var(--sp-cyan);
    border: 2px solid var(--bg-alt);
}
*::-webkit-scrollbar-thumb:hover { background: var(--sp-magenta); }
* { scrollbar-width: thin; }

/* -------------------------------------------------------------------------
   UDL colour coding (Universal theme convention, preserved)
   Boxes whose icon filename starts with `eng_`, `exp_` or `rep_` get
   green / blue / purple accents.
   ------------------------------------------------------------------------- */
/* Green — engagement */
.exe-export .box:has(.box-icon img[src*="eng_"]) .box-head .box-toggle { background-position: -400px 0; }
.box:has(.box-icon img[src*="eng_"]) a,
.box:has(.box-icon img[src*="eng_"]) .box-title { color: var(--sp-green); }
.exe-export .box:has(.box-icon img[src*="eng_"]) { border-color: var(--sp-green); box-shadow: 4px 4px 0 var(--sp-green); }
.exe-export .box:has(.box-icon img[src*="eng_"]) .box-head { background: #007a00; }
.box:has(.box-icon img[src*="eng_"]) .exe-table th { background: #007a00; color: #fff; border-color: var(--sp-green); }
.box:has(.box-icon img[src*="eng_"]) .iDevice_buttons input,
.box:has(.box-icon img[src*="eng_"]) .iDevice_buttons button { background: var(--sp-green); box-shadow: 3px 3px 0 #004a00; }

/* Blue — expression */
.exe-export .box:has(.box-icon img[src*="exp_"]) .box-head .box-toggle { background-position: -450px 0; }
.box:has(.box-icon img[src*="exp_"]) a,
.box:has(.box-icon img[src*="exp_"]) .box-title { color: var(--sp-cyan); }
.exe-export .box:has(.box-icon img[src*="exp_"]) { border-color: var(--sp-cyan-d); box-shadow: 4px 4px 0 var(--sp-cyan-d); }
.exe-export .box:has(.box-icon img[src*="exp_"]) .box-head { background: var(--sp-cyan-d); }
.box:has(.box-icon img[src*="exp_"]) .exe-table th { background: var(--sp-cyan-d); color: #fff; border-color: var(--sp-cyan-d); }
.box:has(.box-icon img[src*="exp_"]) .iDevice_buttons input,
.box:has(.box-icon img[src*="exp_"]) .iDevice_buttons button { background: var(--sp-cyan); color: var(--sp-black); box-shadow: 3px 3px 0 var(--sp-cyan-d); }

/* Purple — representation */
.exe-export .box:has(.box-icon img[src*="rep_"]) .box-head .box-toggle { background-position: -500px 0; }
.box:has(.box-icon img[src*="rep_"]) a,
.box:has(.box-icon img[src*="rep_"]) .box-title { color: var(--sp-magenta); }
.exe-export .box:has(.box-icon img[src*="rep_"]) { border-color: var(--sp-magenta); box-shadow: 4px 4px 0 var(--sp-magenta); }
.exe-export .box:has(.box-icon img[src*="rep_"]) .box-head { background: var(--sp-magenta-d); }
.box:has(.box-icon img[src*="rep_"]) .exe-table th { background: var(--sp-magenta-d); color: #fff; border-color: var(--sp-magenta); }
.box:has(.box-icon img[src*="rep_"]) .iDevice_buttons input,
.box:has(.box-icon img[src*="rep_"]) .iDevice_buttons button { background: var(--sp-magenta); color: var(--sp-white); box-shadow: 3px 3px 0 var(--sp-magenta-d); }

/* -------------------------------------------------------------------------
   Mobile
   ------------------------------------------------------------------------- */
@media (max-width: 575.98px) {
    #sidebar-nav.fixed { position: relative; }
    #siteNav { width: 100%; float: none; padding-bottom: 10px; }
    #siteNav > ul { margin-right: 10px; }
    #siteNav a { max-width: 100%; }
    .exe-web-site main.page,
    .exe-web-site #siteFooter { padding-left: 20px; }
    .exe-web-site .exe-content { box-shadow: none !important; }
    .exe-content .page-title { font-size: 1.8em; }
    .exe-export .box-title { font-size: 1.3em; padding-right: 70px; }
}

/* -------------------------------------------------------------------------
   Mobile top bar: prev/next as chevron cassette keys, counter compacted
   ------------------------------------------------------------------------- */
@media (max-width: 767.98px) {
    /* Drop the sprite-based home/arrow icons and draw clean chevrons. */
    .nav-buttons .nav-button-left,
    .nav-buttons .nav-button-right {
        background-image: none !important;
        background-size: auto !important;
        filter: none !important;
        top: 6px;
        width: 40px;
        height: 38px;
        border: 2px solid var(--sp-black);
        box-shadow: 2px 2px 0 var(--sp-black);
        background-color: var(--sp-cyan);
        color: var(--sp-black);
        text-decoration: none;
        text-align: center;
        line-height: 34px;
    }
    .nav-buttons .nav-button-left:hover,
    .nav-buttons .nav-button-right:hover { background-color: var(--sp-white); }
    .nav-buttons .nav-button-left::before,
    .nav-buttons .nav-button-right::before {
        display: block;
        font-family: var(--font-pixel);
        font-size: 30px;
        line-height: 32px;
        color: var(--sp-black);
    }
    .nav-buttons .nav-button-left::before  { content: "\2039"; } /* ‹ */
    .nav-buttons .nav-button-right::before { content: "\203A"; } /* › */
    /* Disabled state (first/last page) renders as <span>; keep it muted. */
    .nav-buttons span.nav-button { opacity: 0.35; filter: grayscale(1); }

    /* Re-pack the right edge: tweaks(10..50) → dark(60..100) → next(108..148)
       → prev(152..192) → counter(starts ~198). */
    .nav-buttons .nav-button-right { right: 108px; }
    .nav-buttons .nav-button-left  { right: 152px; }
    .exe-web-site .page-counter {
        right: 198px;
        padding: 4px 6px;
        font-size: 13px;
        letter-spacing: 0;
        gap: 2px;
    }
    /* "Página " label is redundant when we only have room for "2/11". */
    .exe-web-site .page-counter .page-counter-label { display: none; }
}

/* -------------------------------------------------------------------------
   Print
   ------------------------------------------------------------------------- */
@media print {
    html body.exe-export { background: #fff; }
    .exe-export .exe-content {
        background: #fff;
        box-shadow: none;
        color: #000;
        padding: 0;
    }
    .exe-export .exe-content::before { display: none; }
    @page { margin: 1.5cm; }
    .exe-export .box { box-shadow: none; }
    .exe-export .box-head::after { display: none; }
    .exe-export .box-toggle { display: none; }
    .exe-web-site #siteNav,
    .exe-web-site .nav-buttons,
    .exe-web-site button.toggler { display: none; }
    .exe-export #siteFooter,
    .exe-export #siteFooterContent,
    .exe-export main.page,
    .exe-export .package-header,
    .exe-export .page-header {
        padding-left: 0;
        padding-right: 0;
    }
    .exe-export .page-counter { top: 0; right: 0; }
}

/* -------------------------------------------------------------------------
   Dark mode — the native ZX Spectrum state
   The sun icon toggles between dark (on) and paper (off).
   ------------------------------------------------------------------------- */
@media screen {
    html.exe-dark-mode {
        --bg: #000000;
        --bg-alt: #0a0a14;
        --ink: #E8E8F0;
        --ink-dim: #A0A0B0;
        --ink-faint: #707080;
        --border: var(--sp-cyan);
        --border-soft: #202038;
        --link: var(--sp-yellow);
        --link-hover: var(--sp-white);
        --accent: var(--sp-magenta);
        --accent-2: var(--sp-cyan);
    }
    html.exe-dark-mode body.exe-export,
    html.exe-dark-mode .exe-content {
        background: var(--bg) !important;
        color: var(--ink);
    }
    html.exe-dark-mode .exe-web-site .exe-content {
        box-shadow:
            inset 320px 0 0 0 var(--bg-alt),
            inset 321px 0 0 0 var(--sp-cyan) !important;
    }
    html.exe-dark-mode .exe-content .page-title { color: var(--sp-cyan); }
    html.exe-dark-mode .exe-content .package-header { background: var(--sp-blue); }
    html.exe-dark-mode .exe-content .box {
        background: var(--bg-alt);
        border-color: var(--sp-cyan);
        box-shadow: 4px 4px 0 var(--sp-magenta);
    }
    html.exe-dark-mode .exe-content .box-content { background: var(--bg-alt); }
    html.exe-dark-mode .exe-content .box-head { background: var(--sp-blue); color: var(--sp-white); }
    html.exe-dark-mode .exe-content a { color: var(--link); }
    html.exe-dark-mode .exe-content a:hover,
    html.exe-dark-mode .exe-content a:focus {
        color: var(--link-hover);
        background: color-mix(in srgb, var(--sp-magenta) 50%, transparent);
    }
    html.exe-dark-mode .exe-content code {
        background: var(--bg-alt);
        color: var(--sp-yellow);
        border-color: var(--sp-cyan);
    }
    html.exe-dark-mode .exe-content h1,
    html.exe-dark-mode .exe-content h2,
    html.exe-dark-mode .exe-content h3,
    html.exe-dark-mode .exe-content h4,
    html.exe-dark-mode .exe-content h5,
    html.exe-dark-mode .exe-content h6 { color: var(--sp-cyan); }

    /* Site chrome in dark mode */
    html.exe-dark-mode .nav-buttons { background: var(--sp-black); border-bottom-color: var(--sp-cyan); }
    html.exe-dark-mode #siteNav a {
        color: var(--ink);
        background: transparent;
    }
    html.exe-dark-mode #siteNav a.active {
        background: var(--sp-magenta);
        color: var(--sp-white);
    }
    html.exe-dark-mode #siteNav a:hover,
    html.exe-dark-mode #siteNav a:focus {
        background: var(--sp-blue);
        color: var(--sp-white);
    }
    html.exe-dark-mode #siteNav a button { filter: invert(1); }
    html.exe-dark-mode #siteNav a.highlighted-link {
        background: var(--sp-yellow);
        color: var(--sp-black);
    }
    html.exe-dark-mode #siteNav a.highlighted-link:hover,
    html.exe-dark-mode #siteNav a.highlighted-link:focus {
        background: var(--sp-cyan);
        color: var(--sp-black);
    }

    /* Sun → moon: swap the icon when dark mode is active */
    html.exe-dark-mode #darkModeToggler,
    html.exe-dark-mode .exe-web-site #darkModeToggler {
        background-color: var(--sp-cyan);
        background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000' stroke='%23000' stroke-width='1.5' stroke-linejoin='round'><path d='M21 13A9 9 0 1 1 11 3a7 7 0 0 0 10 10z'/></svg>");
    }

    /* Breadcrumbs stay legible */
    html.exe-dark-mode #siteBreadcrumbs { color: var(--ink); }
    html.exe-dark-mode #siteBreadcrumbs a { color: var(--sp-cyan); }

    /* Made-with-eXe badge */
    html.exe-dark-mode #made-with-eXe a { filter: invert(100%) hue-rotate(180deg); opacity: 1; }
    html.exe-dark-mode #packageLicense.cc { filter: invert(1) hue-rotate(180deg); }
    html.exe-dark-mode #packageLicense.cc a { color: var(--sp-yellow); }

    /* Accessibility toolbar */
    html.exe-dark-mode #eXeAtoolsBtnSet,
    html.exe-dark-mode #eXeAtoolsSet {
        filter: invert(94%) hue-rotate(180deg);
        box-shadow: var(--sp-cyan) 0 0 2px;
    }
}

@media (min-width: 768px) {
    html.exe-dark-mode .nav-buttons a:hover,
    html.exe-dark-mode .nav-buttons a:focus {
        background: var(--sp-magenta);
        border-color: var(--sp-yellow);
    }
}

/* -------------------------------------------------------------------------
   CRT scanlines — toggleable independently of dark mode.
   The overlay is opt-in: body gets .spectrum-scanlines via style.js
   (or via tweaks panel).
   ------------------------------------------------------------------------- */
@media screen {
    body.spectrum-scanlines::before {
        content: "";
        position: fixed;
        inset: 0;
        pointer-events: none;
        z-index: 9999;
        background: repeating-linear-gradient(
            to bottom,
            rgba(0, 0, 0, 0.16) 0,
            rgba(0, 0, 0, 0.16) 1px,
            transparent 1px,
            transparent 3px
        );
        mix-blend-mode: multiply;
    }
    /* Subtle vignette in dark mode to sell the CRT look */
    html.exe-dark-mode body.spectrum-scanlines::after {
        content: "";
        position: fixed;
        inset: 0;
        pointer-events: none;
        z-index: 9998;
        background: radial-gradient(
            ellipse at center,
            transparent 60%,
            rgba(0, 0, 0, 0.45) 100%
        );
    }
}
@media print {
    body.spectrum-scanlines::before,
    body.spectrum-scanlines::after { display: none; }
}

/* -------------------------------------------------------------------------
   Tweaks panel — triggered by #spectrumTweaksToggler.
   Floats over the page; all state stored in localStorage.
   ------------------------------------------------------------------------- */
#spectrumTweaks {
    position: fixed;
    right: 16px;
    bottom: 16px;
    width: 280px;
    background: var(--sp-black);
    color: var(--sp-white);
    border: 2px solid var(--sp-cyan);
    font-family: var(--font-pixel);
    z-index: 200;
    box-shadow: 6px 6px 0 var(--sp-magenta);
    display: none;
}
#spectrumTweaks.open { display: block; }
#spectrumTweaks .tw-head {
    background: var(--sp-blue);
    color: var(--sp-white);
    padding: 6px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 18px;
    border-bottom: 2px solid var(--sp-cyan);
    letter-spacing: 0.5px;
}
#spectrumTweaks .tw-close {
    background: transparent;
    border: 1px solid var(--sp-white);
    color: var(--sp-white);
    font-family: var(--font-pixel);
    font-size: 16px;
    cursor: pointer;
    padding: 0 8px;
    line-height: 1.2;
}
#spectrumTweaks .tw-close:hover,
#spectrumTweaks .tw-close:focus {
    background: var(--sp-white);
    color: var(--sp-blue);
}
#spectrumTweaks .tw-body {
    padding: 12px 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    font-size: 16px;
}
#spectrumTweaks .tw-row { display: flex; flex-direction: column; gap: 4px; }
#spectrumTweaks .tw-label {
    color: var(--sp-yellow);
    font-size: 15px;
    letter-spacing: 0.5px;
}
#spectrumTweaks .tw-segs { display: flex; gap: 4px; flex-wrap: wrap; }
#spectrumTweaks .tw-seg {
    flex: 1 1 auto;
    background: transparent;
    color: var(--sp-white);
    border: 1px solid var(--sp-cyan);
    font-family: var(--font-pixel);
    font-size: 15px;
    padding: 3px 8px 1px;
    cursor: pointer;
    text-align: center;
    min-width: 60px;
    letter-spacing: 0.5px;
    text-transform: lowercase;
}
#spectrumTweaks .tw-seg:hover:not(.on) { background: var(--sp-blue); }
#spectrumTweaks .tw-seg.on {
    background: var(--sp-magenta);
    border-color: var(--sp-magenta);
    color: var(--sp-white);
}

/* -------------------------------------------------------------------------
   Tape-load intro overlay (ZX Spectrum "loading" mimic)
   Horizontal stripes on top/bottom borders; blue paper screen in the middle
   with VT323 text that reveals line-by-line. Keep this self-contained so it
   can mount on any page without fighting with the rest of the theme.
   ------------------------------------------------------------------------- */
body.spectrum-loading { overflow: hidden; }
body.spectrum-loading > *:not(.spectrum-loader) { visibility: hidden; }

.spectrum-loader {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-family: var(--font-pixel, "VT323", ui-monospace, monospace);
    transition: opacity 0.4s ease;
    visibility: visible !important;
    /* Pilot tone: red / cyan horizontal bands wrap the entire viewport so
       they surround the central "screen" on all four sides. */
    background-image: repeating-linear-gradient(
        to bottom,
        #d71919 0 4px,
        #19d7d7 4px 8px
    );
    animation: sp-load-flick 0.08s steps(2) infinite;
}
.spectrum-loader.fading { opacity: 0; pointer-events: none; }

/* Data phase: yellow / blue fast flicker. */
.spectrum-loader.phase-data {
    background-image: repeating-linear-gradient(
        to bottom,
        #d7d719 0 3px,
        #1919d7 3px 6px
    );
    animation-duration: 0.05s;
}
@keyframes sp-load-flick {
    from { background-position: 0 0; }
    to   { background-position: 0 8px; }
}

.spectrum-loader .sp-screen {
    background: #00009c; /* Spectrum paper blue */
    color: #ffffff;
    padding: 52px 60px;
    /* Native Spectrum SCREEN$ is 256x192 → 4:3. Sized to the limiting
       viewport dimension so the rectangle grows while keeping ratio. */
    width: min(900px, 92vw, calc(92vh * 4 / 3));
    aspect-ratio: 4 / 3;
    border: 3px solid #ffffff;
    box-shadow: 0 0 0 3px #000000, 6px 6px 0 3px #000000;
    font-size: clamp(22px, 3.8vw, 36px);
    line-height: 1.25;
    letter-spacing: 1px;
    text-transform: uppercase;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.spectrum-loader .sp-line { margin: 0 0 6px; }
.spectrum-loader .sp-line.sp-hidden { visibility: hidden; }
.spectrum-loader .sp-spacer { flex: 0 0 16px; }
.spectrum-loader .sp-copy  { color: #ffff00; }
.spectrum-loader .sp-title { color: #ffffff; font-size: 1.15em; }
.spectrum-loader .sp-hl    { color: #ffff00; }
.spectrum-loader .sp-ok    { color: #19d719; }

.spectrum-loader .sp-cursor {
    display: inline-block;
    width: 0.55ch;
    height: 0.9em;
    margin-left: 2px;
    background: currentColor;
    vertical-align: -0.08em;
    animation: sp-caret 0.55s steps(2) infinite;
}
@keyframes sp-caret { 50% { opacity: 0; } }

@media (max-width: 575.98px) {
    .spectrum-loader .sp-screen {
        width: min(94vw, calc(78vh * 4 / 3));
        padding: 30px 26px;
    }
}

/* -------------------------------------------------------------------------
   In-editor (eXeLearning workarea) overrides
   ------------------------------------------------------------------------- */
#workarea .box-head {
    border: 2px solid var(--border) !important;
    margin-bottom: 10px;
    /* The exported stylesheet clips the header with overflow:hidden to contain
       the rainbow ribbon. In edit mode that also clips the actions dropdown
       menu, leaving an empty white rectangle. Allow it to escape here. */
    overflow: visible !important;
}
/* Shrink the rainbow ribbon in edit mode so it doesn't cover the 3-dot menu. */
#workarea .box-head::after { width: 28px !important; opacity: 0.85; }

/* The exported stylesheet sets .box-title color only inside .exe-export, so in
   the editor the title renders dark-on-dark-blue. Force white + pixel font
   with !important because editor base.css also targets this selector. */
#workarea .box-head .box-title,
#workarea .box-head h1.box-title,
#workarea .box-head .content-editable-title h1,
#workarea .box-head .content-editable-title [contenteditable="true"] {
    color: var(--sp-white) !important;
    font-family: var(--font-pixel) !important;
    font-size: 1.4em !important;
    font-weight: normal !important;
    letter-spacing: 0.5px;
    line-height: 1.2;
    margin: 0 !important;
    padding: 6px 10px !important;
    background: transparent !important;
}

/* Invert the dark icons on the pencil/move/3-dot buttons so they're legible
   on the blue header. The icons use mask-image or img src with dark ink. */
#workarea .box-head .btn-edit-title,
#workarea .box-head .box_actions .btn-action-menu,
#workarea .box-head .box_actions .exe-actions-menu > button {
    color: var(--sp-white) !important;
    background: transparent !important;
    border: 1px solid rgba(255, 255, 255, 0.5) !important;
    border-radius: 0 !important;
}
#workarea .box-head .btn-edit-title:hover,
#workarea .box-head .box_actions .btn-action-menu:hover {
    background: rgba(255, 255, 255, 0.18) !important;
    border-color: var(--sp-white) !important;
}
/* Icons on the action buttons live inside .small-icon and are either <img>,
   mask-image or currentColor SVG. Invert the dark sprite into white. */
#workarea .box-head .btn-edit-title .small-icon,
#workarea .box-head .box_actions .exe-actions-menu > button .small-icon {
    filter: invert(1) brightness(1.25) !important;
}
#workarea .box-head .box_actions {
    position: relative;
    z-index: 3;
    margin-right: 36px;
}

/* Dropdown menu items land on the standard light Bootstrap surface — keep
   their icons uninverted and text dark so they're readable. Float the menu
   above both the rainbow ribbon and the blue header. */
#workarea .box-head .dropdown-menu,
#workarea .box-head .exe-actions-menu .dropdown-menu {
    z-index: 2000 !important;
    position: absolute;
}
#workarea .box-head .dropdown-menu .dropdown-item {
    color: var(--ink) !important;
    font-family: var(--font-mono, system-ui);
}
#workarea .box-head .dropdown-menu .dropdown-item .small-icon {
    filter: none !important;
}