/* Spolecny vzhled skript (Pi - chemie, fyzika, matematika; Vesmir - filozofie); zelena barva loga Thanatolog #3a8f45 */
* { box-sizing: border-box; }

      html, body {
        margin: 0;
        min-height: 100%;
        font-family: 'Segoe UI', system-ui, sans-serif;
        background: #0f0f13;
        color: #d8d4dc;
      }

      .top-nav {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.5rem 2rem;
        padding: 0.7rem 1.25rem;
        background: #1c1b23;
        border-bottom: 1px solid #322f3c;
      }

      .top-nav-brand {
        font-family: Georgia, 'Times New Roman', serif;
        font-size: 1.2rem;
        color: #cfc4de;
        text-decoration: none;
        letter-spacing: 0.03em;
      }

      .top-nav-links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.25rem; }

      .top-nav-links a,
      .sub-nav a {
        color: #a9a3b6;
        text-decoration: none;
        font-size: 0.9rem;
        padding: 0.3rem 0;
        border-bottom: 2px solid transparent;
      }

      .top-nav-links a:hover,
      .sub-nav a:hover { color: #d8d4dc; }

      .top-nav-links a.active,
      .sub-nav a.active { color: #d8d4dc; border-bottom-color: #3a8f45; }

      .sub-nav {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 0.4rem 1.5rem;
        padding: 0.55rem 1.25rem;
        background: #15141b;
        border-bottom: 1px solid #26242e;
      }

      .sub-nav .sub-nav-title {
        font-family: Georgia, 'Times New Roman', serif;
        color: #cfc4de;
        font-size: 1rem;
        margin-right: 0.5rem;
      }

      /* --- skripta --- */
      main {
        max-width: 780px;
        margin: 0 auto;
        padding: 3rem 1.25rem 4rem;
      }

      .kicker {
        margin: 0 0 0.3rem;
        font-size: 0.78rem;
        text-transform: uppercase;
        letter-spacing: 0.1em;
        color: #7d7789;
      }

      h1 {
        font-family: Georgia, 'Times New Roman', serif;
        font-weight: normal;
        font-size: clamp(2.2rem, 6vw, 3.2rem);
        color: #cfc4de;
        letter-spacing: 0.03em;
        margin: 0 0 0.6rem;
      }

      .lead {
        margin: 0 0 1.8rem;
        padding: 1rem 1.2rem;
        background: #1c1b23;
        border-left: 3px solid #3a8f45;
        border-radius: 0 6px 6px 0;
        font-family: Georgia, 'Times New Roman', serif;
        font-style: italic;
        font-size: 1.08rem;
        line-height: 1.7;
        color: #c3bfca;
      }

      .toc {
        background: #1c1b23;
        border: 1px solid #322f3c;
        border-radius: 8px;
        padding: 0.9rem 1.2rem;
        margin: 0 0 2.5rem;
      }

      .toc strong { font-family: Georgia, 'Times New Roman', serif; font-weight: normal; color: #cfc4de; }

      .toc ol { margin: 0.6rem 0 0.2rem; padding-left: 1.4rem; columns: 2 15rem; column-gap: 2rem; }

      .toc li { margin: 0.2rem 0; color: #6f6a7c; break-inside: avoid; }

      .toc a { color: #7fcf8a; text-decoration: none; }

      .toc a:hover { text-decoration: underline; }

      h2 {
        font-family: Georgia, 'Times New Roman', serif;
        font-weight: normal;
        font-size: 1.6rem;
        color: #cfc4de;
        margin: 2.8rem 0 1rem;
        scroll-margin-top: 1rem;
      }

      h2 .num { color: #3a8f45; margin-right: 0.4rem; }

      h3 {
        font-family: Georgia, 'Times New Roman', serif;
        font-weight: normal;
        font-size: 1.22rem;
        color: #d8cfe6;
        margin: 1.8rem 0 0.6rem;
      }

      p, li, dd {
        font-family: Georgia, 'Times New Roman', serif;
        font-size: 1.06rem;
        line-height: 1.8;
        color: #d0ccd6;
      }

      p { margin: 0 0 1rem; }

      ul, ol { padding-left: 1.4rem; margin: 0 0 1rem; }

      li { margin-bottom: 0.4rem; }

      strong { color: #ece6f4; }

      em { color: #e1d9ec; }

      .box {
        margin: 1.4rem 0;
        padding: 1rem 1.2rem;
        border-radius: 8px;
        background: #12231a;
        border: 1px solid #2a5535;
      }

      .box.warn { background: #241a1d; border-color: #4f3039; }

      .box-title {
        display: block;
        margin-bottom: 0.4rem;
        font-family: 'Segoe UI', system-ui, sans-serif;
        font-size: 0.78rem;
        text-transform: uppercase;
        letter-spacing: 0.08em;
        color: #7fcf8a;
      }

      .box.warn .box-title { color: #e08a98; }

      .box p:last-child, .box ul:last-child { margin-bottom: 0; }

      .table-wrap { overflow-x: auto; margin: 1.2rem 0 1.6rem; }

      table { width: 100%; border-collapse: collapse; font-size: 0.95rem; min-width: 560px; }

      th, td { padding: 0.55rem 0.7rem; border-bottom: 1px solid #2a2833; text-align: left; vertical-align: top; }

      th { color: #9d8bc4; font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; }

      td { color: #d0ccd6; }

      td:first-child { color: #ece6f4; font-style: italic; white-space: nowrap; }

      /* casova osa */
      .chart-wrap { overflow-x: auto; margin: 1.2rem 0 0.4rem; background: #15141b; border: 1px solid #26242e; border-radius: 8px; padding: 0.8rem 0.6rem 0.4rem; }

      #timelineChart { display: block; min-width: 640px; width: 100%; height: auto; }

      .chart-note { font-size: 0.82rem !important; color: #7d7789 !important; font-family: 'Segoe UI', system-ui, sans-serif !important; }

      /* slovnicek, otazky */
      dl.glossary div { padding: 0.55rem 0; border-bottom: 1px solid #22202a; }

      dl.glossary dt { color: #7fcf8a; font-weight: 600; }

      dl.glossary dd { margin: 0.15rem 0 0; font-size: 1rem; line-height: 1.6; }

      .quiz details {
        background: #1c1b23;
        border: 1px solid #322f3c;
        border-radius: 8px;
        margin-bottom: 0.6rem;
      }

      .quiz summary {
        cursor: pointer;
        padding: 0.8rem 1rem;
        font-family: Georgia, 'Times New Roman', serif;
        font-size: 1.05rem;
        color: #cfc4de;
      }

      .quiz details p { padding: 0 1rem 0.9rem; margin: 0; color: #a5dcae; }

      .sources ol { font-size: 0.88rem; color: #a9a3b6; }

      .sources li { font-family: 'Segoe UI', system-ui, sans-serif; font-size: 0.88rem; line-height: 1.6; color: #a9a3b6; }

      .sources a, main a { color: #7fcf8a; overflow-wrap: anywhere; }

/* zalozky podstranek Evoluce */
.tabs { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.4rem 0 1.4rem; }

.tabs a {
  padding: 0.35rem 0.95rem;
  border: 1px solid #3a3646;
  border-radius: 999px;
  color: #a9a3b6;
  text-decoration: none;
  font-size: 0.9rem;
}

.tabs a:hover { color: #d8d4dc; border-color: #3a8f45; }

.tabs a.active { background: #3a8f45; border-color: #3a8f45; color: #fff; }

/* rozcestnik */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr)); gap: 1.2rem; margin-top: 1.5rem; }

.card {
  display: block;
  padding: 1.3rem 1.3rem 1.4rem;
  background: #1c1b23;
  border: 1px solid #322f3c;
  border-top: 3px solid #3a8f45;
  border-radius: 8px;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}

.card:hover { border-color: #3a8f45; transform: translateY(-2px); }

.card h2 { margin: 0 0 0.5rem; font-size: 1.45rem; }

.card p { margin: 0; font-size: 1rem; color: #a9a3b6; }

.card .meta { display: block; margin-top: 0.8rem; font-family: 'Segoe UI', system-ui, sans-serif; font-size: 0.82rem; color: #7fcf8a; }
/* --- dalsi a predchozi kapitola, rozcestnik --- */
.pager { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.8rem; margin-top: 3rem; padding-top: 1.2rem; border-top: 1px solid #2a2833; font-family: 'Segoe UI', system-ui, sans-serif; }

.pager a { text-decoration: none; }

.pager a:hover { text-decoration: underline; }

.level-note { font-family: 'Segoe UI', system-ui, sans-serif; font-size: 0.85rem; color: #7d7789; margin-left: 0.4rem; }

h2 a { color: inherit !important; text-decoration: none; }

.card-quiz { border-top-color: #d6a64f; }

/* --- kvizy --- */
.kviz { margin: 1rem 0 1.5rem; }

.kq { background: #1c1b23; border: 1px solid #322f3c; border-radius: 8px; padding: 0.9rem 1rem 0.8rem; margin-bottom: 0.8rem; }

.kq-q { margin: 0 0 0.6rem; font-size: 1.05rem; line-height: 1.55; color: #ece6f4; }

.kq-n { color: #7d7789; margin-right: 0.15rem; }

.kq-ch { display: block; margin-top: 0.15rem; font-family: 'Segoe UI', system-ui, sans-serif; font-size: 0.75rem; color: #7d7789; text-transform: uppercase; letter-spacing: 0.06em; }

.kq-opts { display: grid; gap: 0.4rem; }

.kq-opt { text-align: left; padding: 0.55rem 0.8rem; border-radius: 6px; border: 1px solid #3a3646; background: #15141b; color: #d8d4dc; font: inherit; font-size: 0.97rem; line-height: 1.45; cursor: pointer; }

.kq-opt:hover:not(:disabled) { border-color: #8a80a0; }

.kq-opt:disabled { cursor: default; opacity: 0.7; }

.kq-opt.right { opacity: 1; background: #17321f; border-color: #4f9a62; color: #e5f7ea; }

.kq-opt.wrong { opacity: 1; background: #3a1a21; border-color: #b25466; color: #f7e1e6; }

.kq-e { margin: 0.6rem 0 0; font-family: 'Segoe UI', system-ui, sans-serif; font-size: 0.92rem; line-height: 1.55; }

.kq-e.ok { color: #9fd8ad; }

.kq-e.ko { color: #f0a9b6; }

.kviz-bar { position: sticky; bottom: 0; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.6rem; padding: 0.7rem 1rem; margin-top: 0.4rem; background: rgba(21, 20, 27, 0.96); border: 1px solid #322f3c; border-radius: 8px; }

.kviz-status { margin: 0; font-family: 'Segoe UI', system-ui, sans-serif; font-size: 0.92rem; color: #c3bfca; }

.kviz-again { padding: 0.45rem 1rem; border-radius: 999px; border: 1px solid #3a3646; background: #2a2833; color: #ece6f4; font: inherit; font-size: 0.9rem; cursor: pointer; }

.kviz-again:hover { border-color: #8a80a0; }

.kviz-result { margin: 1rem 0 0.4rem; padding: 1.1rem 1.2rem; border-radius: 8px; background: #221d2c; border: 1px solid #4a3f62; }

.kviz-score { margin: 0 0 0.4rem; font-size: 1.25rem; color: #fff; }

.kviz-grade { margin: 0; display: flex; align-items: center; gap: 0.8rem; }

.kviz-mark { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; width: 2.6rem; height: 2.6rem; border-radius: 50%; background: #d6a64f; color: #1a1408; font-family: 'Segoe UI', system-ui, sans-serif; font-weight: 700; font-size: 1.35rem; }

/* vzorce a obrazky ve skriptech */
.formula { display: block; margin: 0.8rem 0 1rem; padding: 0.7rem 1rem; background: #15141b; border: 1px solid #26242e; border-radius: 6px; font-family: 'Cambria Math', Cambria, Georgia, serif; font-size: 1.12rem; color: #ece6f4; text-align: center; overflow-x: auto; }

figure.fig { margin: 1.4rem 0; padding: 0.8rem; background: #15141b; border: 1px solid #26242e; border-radius: 8px; }

figure.fig svg { display: block; width: 100%; height: auto; max-height: 360px; }

figure.fig figcaption { margin-top: 0.5rem; font-family: 'Segoe UI', system-ui, sans-serif; font-size: 0.82rem; color: #8f8a9c; text-align: center; }