/* Catalog and topic introductions: clear typography and print-safe contrast.
   Loaded only on these two page types; game state styling stays independent. */
body.discovery, body.discovery.discovery-topic-page {
  --ink: #142337;
  --soft: #35465a;
  --display: Arial, "Segoe UI", sans-serif;
  --body: Arial, "Segoe UI", sans-serif;
  --discovery-bg: #edf3ff;
  color: var(--ink);
  background-color: var(--discovery-bg);
  background-image: url('../img/multimedia/discovery-cosmos.svg');
  background-position: center;
  background-size: 100% 100%;
  background-repeat: no-repeat;
  background-attachment: fixed;
}
body.discovery::before, body.discovery::after { content: none; }
.discovery h1, .discovery h2, .discovery h3 { font-weight: 800; }
.discovery .discover-nav { min-height: 80px; padding-inline: 18px; border-bottom: 1px solid #c3ced8; border-radius: 0 0 14px 14px; background: #ffffffd9; }
.discovery .discover-links > a { color: #253b51; font-size: 15px; border-radius: 7px; }
.discovery .discover-links > a.is-active { color: #fff; background: #183c64; }
.discovery .discover-button { background: #183c64; border-color: #183c64; border-radius: 8px; box-shadow: none; }
.discovery .discover-button:hover { background: #102d4e; }
.discovery .discover-hero::after { background: linear-gradient(90deg, #ffffff 0%, #ffffffed 32%, #ffffff78 58%, transparent 76%); }
.discovery .discover-hero h1 { color: #142337; font-weight: 800; font-size: clamp(38px, 4.3vw, 60px); }
.discovery .discover-hero h1 em { color: #174c87; }
.discovery .discover-hero-description { color: #263c51; font-size: 18px; }
.discovery .discover-hero-facts > span, .discovery .discover-hero-facts b { font-size: 13px; color: #22394c; }
.discovery .discover-kicker { color: #244b70; font-size: 12px; letter-spacing: 1.4px; }
.discovery .discover-section-heading h2 { font-size: 36px; font-weight: 800; color: #142337; }
.discovery .discover-section-heading > div > p:last-child { font-size: 17px; color: #35465a; }
.discovery .discover-count { font-size: 14px; color: #fff; background: #183c64; border-color: #183c64; }
.discovery .discover-filters button { color: #253b51; border-color: #aab9c8; font-size: 14px; border-radius: 7px; background: #fff; }
.discovery .discover-filters button.is-selected { background: #183c64; border-color: #183c64; color: #fff; }
.discovery .discover-grid { gap: 22px; }

/* Every topic owns a dark, legible accent and a saturated illustration field. */
.discovery .discover-topic, .discovery .discover-topic--tree { --accent: #12603d; --scene-top: #14965f; --scene-bottom: #086443; --accent-ink: #12603d; }
.discovery .discover-topic--planet { --accent: #283b8d; --scene-top: #4c63d2; --scene-bottom: #293b8e; --accent-ink: #283b8d; }
.discovery .discover-topic--heart { --accent: #a12649; --scene-top: #dd5273; --scene-bottom: #9f2547; --accent-ink: #a12649; }
.discovery .discover-topic--sprout, .discovery .discover-topic--leaf { --accent: #42651b; --scene-top: #79a62e; --scene-bottom: #42651b; --accent-ink: #42651b; }
.discovery .discover-topic--paw { --accent: #93430e; --scene-top: #df8c25; --scene-bottom: #a7510b; --accent-ink: #93430e; }
.discovery .discover-topic--globe { --accent: #075f65; --scene-top: #14969b; --scene-bottom: #075f65; --accent-ink: #075f65; }
.discovery .discover-topic--bolt { --accent: #653593; --scene-top: #9454cf; --scene-bottom: #633291; --accent-ink: #653593; }
.discovery .discover-topic--gem { --accent: #075c85; --scene-top: #159cc3; --scene-bottom: #075c85; --accent-ink: #075c85; }
.discovery .discover-card { padding: 0; border: 1.5px solid #b6c4cf; border-radius: 12px; overflow: hidden; box-shadow: 0 3px 10px #132b4210; }
.discovery a.discover-card:hover { border-color: var(--accent); box-shadow: 0 8px 22px #132b4220; }
.discovery .discover-card-scene { height: 144px; border-radius: 0; }
.discovery .discover-topic-art { height: 124px; width: 142px; margin-top: 10px; filter: saturate(1.35) drop-shadow(0 5px 5px #0002); }
.discovery .discover-card-number { background: #fff; color: var(--accent); font-size: 14px; border-radius: 6px; }
.discovery .discover-card-badge { background: #fff; color: var(--accent); font-size: 12px; border-radius: 5px; }
.discovery .scene-spark { color: #fff; opacity: .85; }
.discovery .discover-card-body { padding: 17px; }
.discovery .discover-card-body h3 { color: #142337; font-size: 21px; font-weight: 800; min-height: 54px; line-height: 1.25; letter-spacing: -.4px; }
.discovery .discover-card-body > p { color: #304254; font-size: 16px; font-weight: 400; line-height: 1.5; min-height: 72px; margin: 8px 0 18px; }
.discovery .discover-card-meta { font-size: 13px; color: #304254; }
.discovery .discover-card-stars { color: #8b5607; }
.discovery .discover-card-cta { color: #fff; background: var(--accent); border-color: var(--accent); border-radius: 6px; font-size: 15px; }
.discovery .discover-card--soon { filter: none; }
.discovery .discover-card--soon .discover-card-cta { color: #35465a; background: #e3e9ee; border-color: #a8b7c5; }

body.discovery.discovery-topic-page { --ink: #142337; --t1: #142337; --t2: #35465a; background-color: var(--discovery-bg); }
body.discovery.discovery-topic-page::before, body.discovery.discovery-topic-page::after { content: none; }
body.discovery.discovery-topic-page .lesson { padding-top: 12px; }
body.discovery.discovery-topic-page .lesson > .back { border: 1px solid #d5dfeb; padding: 9px 12px; background: #ffffffeb; box-shadow: none; color: #263e56; font-size: 14px; }
.discovery-topic-page .discover-lesson-hero { background: var(--accent); border: 0; border-radius: 14px; padding: 30px 36px; grid-template-columns: minmax(0, 1.8fr) minmax(0, 1fr); }
.discovery-topic-page .discover-lesson-hero::before, .discovery-topic-page .discover-lesson-hero::after { content: none; }
.discovery-topic-page .discover-lesson-intro > .discover-eyebrow { color: #fff; background: none; border: 0; padding: 0; font-size: 13px; letter-spacing: .5px; }
body.discovery.discovery-topic-page .discover-lesson-intro h1 { color: #fff; font-size: clamp(32px, 3.5vw, 48px); font-weight: 800; max-width: 23ch; line-height: 1.12; letter-spacing: -1px; }
.discovery-topic-page .discover-lesson-intro > p:not(.discover-eyebrow):not(.discover-lesson-complete) { color: #fff; font-size: 18px; line-height: 1.5; }
.discovery-topic-page .discover-lesson-facts > span, .discovery-topic-page .discover-lesson-facts b { color: #fff; font-size: 14px; }
.discovery-topic-page .discover-lesson-facts .ico { color: #fff; width: 18px; height: 18px; }
body.discovery.discovery-topic-page .lesson-start .btn { color: var(--accent); background: #fff; border: 1px solid #fff; border-radius: 7px; box-shadow: none; font-size: 16px; }
body.discovery.discovery-topic-page .lesson-start p { color: #fff; font-size: 12px; line-height: 1.5; }
.discovery-topic-page .discover-lesson-complete { color: #fff; }
.discovery-topic-page .discover-lesson-picture { min-height: 220px; }
.discovery-topic-page .discover-lesson-picture > svg { filter: saturate(1.35) drop-shadow(0 10px 8px #0002); transform: none; width: 250px; height: 220px; }
.discovery-topic-page .discover-picture-label { color: #142337; background: #fff; transform: none; font-size: 12px; border-radius: 6px; bottom: -9px; }
.discovery-topic-page .discover-path-heading { margin: 30px 0 20px; text-align: left; }
body.discovery.discovery-topic-page .stages-title { font-size: 30px; font-weight: 800; color: #142337; }
.discovery-topic-page .discover-path-heading > p:last-child { color: #35465a; font-size: 15px; }
body.discovery.discovery-topic-page .folders { margin-top: 20px; gap: 16px; }
.discovery-topic-page .folder-slot { --stage-ink: #8e4b08; }
.discovery-topic-page .folder-slot:nth-child(2) { --stage-ink: #146346; }
.discovery-topic-page .folder-slot:nth-child(3) { --stage-ink: #155c97; }
.discovery-topic-page .folder-slot:nth-child(4) { --stage-ink: #633c98; }
.discovery-topic-page .folder-slot:nth-child(5) { --stage-ink: #a12b50; }
body.discovery.discovery-topic-page .folder { padding: 18px 16px; border: 1.5px solid #aabac9; border-top: 7px solid var(--stage-ink); border-radius: 9px; background: #fff; box-shadow: 0 3px 9px #132b4210; }
body.discovery.discovery-topic-page .folder--shut { border-style: dashed; opacity: 1; }
body.discovery.discovery-topic-page .folder--soon { opacity: 1; background: #f2f5f8; }
body.discovery.discovery-topic-page .folder-tab { background: var(--stage-ink); border: 0; color: #fff; border-radius: 5px; font-size: 13px; }
.discovery-topic-page .discover-stage-art { width: 98px; height: 85px; margin-bottom: 14px; filter: saturate(1.5); }
body.discovery.discovery-topic-page .folder-name { color: var(--stage-ink); font-size: 12px; letter-spacing: 1px; }
body.discovery.discovery-topic-page .folder-sheet b { font-size: 21px; color: #142337; line-height: 1.2; }
body.discovery.discovery-topic-page .folder-sheet > span { font-size: 15px; color: #35465a; line-height: 1.5; }
body.discovery.discovery-topic-page .folder-sheet { margin-bottom: 16px; }
body.discovery.discovery-topic-page .folder-go { color: var(--stage-ink); font-size: 13px; border-top: 1px solid #ccd5de; margin-top: auto; padding-top: 12px; }
body.discovery.discovery-topic-page .folder-go--shut { font-size: 12px; }
.discovery .discover-footer { margin-top: 20px; }
.discovery .discover-footer p, .discovery .discover-footer small { color: #35465a; }

/* Every topic page shows its five stages as physical folder silhouettes. */
body.discovery.discovery-stage-folders .folders { gap: 28px 22px; margin-top: 28px; padding-right: 7px; }
.discovery-stage-folders .folder-slot { --folder-paper: #ff767e; }
.discovery-stage-folders .folder-slot:nth-child(2) { --folder-paper: #ffbf4f; }
.discovery-stage-folders .folder-slot:nth-child(3) { --folder-paper: #6bcf77; }
.discovery-stage-folders .folder-slot:nth-child(4) { --folder-paper: #80a6fb; }
.discovery-stage-folders .folder-slot:nth-child(5) { --folder-paper: #bd9bfa; }
body.discovery.discovery-stage-folders .folder { isolation: isolate; margin-top: 0; padding: 44px 16px 16px; border: 0; border-radius: 0; background: none; box-shadow: none; overflow: visible; color: #17212e; }
.stage-folder-shell { position: absolute; z-index: -1; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; filter: drop-shadow(6px 7px 0 #18212e); }
.stage-folder-shell path { fill: var(--folder-paper); stroke: #18212e; stroke-width: 2.2px; stroke-linejoin: round; }
body.discovery.discovery-stage-folders .folder--open:hover,
body.discovery.discovery-stage-folders .folder--open:focus-visible { box-shadow: none; transform: translateY(-5px); }
body.discovery.discovery-stage-folders .folder--open:active { transform: translate(3px, 3px); }
body.discovery.discovery-stage-folders .folder-tab { top: 5px; left: calc(17% - 19px); width: 38px; height: 23px; border: 0; border-radius: 0; background: none; color: #17212e; font-size: 14px; }
.discovery-stage-folders .discover-stage-art { width: 68px; height: 60px; margin: 0 0 12px; filter: saturate(1.3); }
body.discovery.discovery-stage-folders .folder-name { color: #17212e; font-size: 12px; letter-spacing: .5px; margin-bottom: 9px; }
body.discovery.discovery-stage-folders .folder-sheet { flex: 1; margin: 0; padding: 12px; border: 1.5px solid #18212e; border-radius: 9px; background: #fffef9; }
body.discovery.discovery-stage-folders .folder-sheet b { color: #17212e; font-size: 18px; line-height: 1.25; }
body.discovery.discovery-stage-folders .folder-sheet > span { color: #2f3a47; font-size: 14px; line-height: 1.5; margin-top: 7px; }
body.discovery.discovery-stage-folders .folder-go { color: #17212e; font-size: 12px; padding-top: 0; margin-top: 14px; border: 0; opacity: 1; }
body.discovery.discovery-stage-folders .folder--shut { opacity: 1; }
.discovery-stage-folders .folder--shut .stage-folder-shell path { stroke-dasharray: 6 4; }
body.discovery.discovery-stage-folders .folder--soon { --folder-paper: #b9c5d3; opacity: 1; }

@media (max-width: 1100px) {
  body.discovery.discovery-topic-page .folders { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 800px) {
  body.discovery, body.discovery.discovery-topic-page { background-image: url('../img/multimedia/discovery-cosmos-mobile.svg'); }
  .discovery-topic-page .discover-lesson-hero { padding: 26px; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); }
  .discovery-topic-page .discover-lesson-picture > svg { width: 180px; height: 170px; }
  .discovery .discover-card-body h3 { font-size: 20px; }
}
@media (max-width: 600px) {
  .discovery .discover-section-heading { display: block; }
  .discovery .discover-count { display: inline-flex; margin-top: 14px; }
  .discovery .discover-filters { flex-wrap: wrap; overflow: visible; }
  .discovery-topic-page .discover-lesson-hero { grid-template-columns: minmax(0, 1fr); padding: 24px; text-align: left; }
  body.discovery.discovery-topic-page .discover-lesson-intro h1 { margin-inline: 0; font-size: 34px; }
  .discovery-topic-page .discover-lesson-intro > p:not(.discover-eyebrow):not(.discover-lesson-complete) { font-size: 17px; }
  .discovery-topic-page .discover-lesson-picture { min-height: 190px; }
  .discovery-topic-page .discover-picture-label { bottom: 0; }
  body.discovery.discovery-topic-page .folders { grid-template-columns: minmax(0, 1fr); }
  body.discovery.discovery-topic-page .folder { padding: 22px 18px; }
  body.discovery.discovery-stage-folders .folder { display: flex; flex-direction: column; gap: 0; padding: 44px 18px 18px; }
  .discovery .discover-section-heading h2 { font-size: 30px; }
}
@media (max-width: 480px) {
  .discovery .discover-grid { grid-template-columns: minmax(0, 1fr); }
  .discovery .discover-card-body h3 { min-height: 0; }
  .discovery .discover-card-body > p { min-height: 0; }
  .discovery .discover-card-meta { margin-top: 4px; }
}
@media print {
  body.discovery { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .discovery .discover-card, body.discovery.discovery-topic-page .folder { box-shadow: none; break-inside: avoid; }
  .discovery .discover-lesson-hero { break-inside: avoid; }
}