/**
 * Téma CNT: modernizovaná podoba upraveného bartiku (2014–2026).
 * Barvy a prvky převzaté z původního style.css.
 */

:root {
  --cnt-blue: #1156a3;
  --cnt-blue-dark: #0a4990;
  --cnt-blue-light: #3180d9;
  --cnt-red: #bc0000;
  --cnt-red-dark: #990000;
  --cnt-text: #2b2b2b;
  --cnt-muted: #6b7178;
  --cnt-bg: #e9edf0;
  --cnt-surface: #fff;
  --cnt-border: #d7dce0;
  --cnt-radius: 8px;
  --cnt-shadow: 0 1px 3px rgb(0 0 0 / 0.08), 0 4px 14px rgb(0 0 0 / 0.04);
  --cnt-max: 1200px;
  /* Společná výška prvků v pruhu s nadpisem (uživatelský panel, hledání). */
  --cnt-tool-h: 40px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--cnt-bg);
  color: var(--cnt-text);
  font: 400 0.9375rem/1.6 "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--cnt-red);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

:focus-visible {
  outline: 3px solid var(--cnt-blue-light);
  outline-offset: 2px;
}

h1,
h2,
h3,
h4 {
  line-height: 1.25;
  margin: 1.4em 0 0.5em;
}

h2,
h3 {
  color: var(--cnt-red);
}

.container {
  width: 100%;
  max-width: var(--cnt-max);
  margin-inline: auto;
  padding-inline: 16px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}

/* ---------- Hlavička ---------- */

.site-header {
  background: var(--cnt-blue-dark) url(../images/header.jpg) center top / cover no-repeat;
  padding-bottom: 14px;
}

.site-header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 18px 22px;
}

.site-logo img {
  display: block;
  width: 240px;
}

.site-slogan {
  margin: 0;
  color: #fff;
  font-size: 1.35rem;
  font-style: italic;
  font-weight: 700;
  text-shadow: 0 1px 2px rgb(0 0 0 / 0.4);
}

/* ---------- Hlavní menu ---------- */

.main-nav {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding: 6px 10px;
  background: linear-gradient(var(--cnt-blue), var(--cnt-blue-dark));
  border-top: 1px solid var(--cnt-blue-light);
  border-bottom: 3px solid var(--cnt-blue-light);
  border-radius: var(--cnt-radius);
}

.main-nav__toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.main-nav__toggle-icon,
.main-nav__toggle-icon::before,
.main-nav__toggle-icon::after {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  content: "";
}

.main-nav__toggle-icon {
  position: relative;
}

.main-nav__toggle-icon::before {
  position: absolute;
  top: -6px;
}

.main-nav__toggle-icon::after {
  position: absolute;
  top: 6px;
}

.main-nav__menu {
  flex: 1;
}

.main-nav__menu ul {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.main-nav__menu a {
  display: block;
  padding: 8px 12px;
  border-radius: 6px;
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 700;
}

.main-nav__menu a:hover,
.main-nav__menu a:focus,
.main-nav__menu a.is-active {
  background: var(--cnt-red);
  text-decoration: none;
}

.social {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
}

.social__link {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  color: #fff;
}

.social__link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.social__link--x {
  background: #000;
}

.social__link--fb {
  background: #1877f2;
}

.social__link--rss {
  background: #f26522;
}

@media (max-width: 860px) {
  .site-header__top {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-slogan {
    font-size: 1.05rem;
  }

  .main-nav__toggle {
    display: inline-flex;
  }

  .main-nav__menu {
    display: none;
    order: 3;
    flex-basis: 100%;
  }

  .main-nav.is-open .main-nav__menu {
    display: block;
  }

  .main-nav__menu ul {
    flex-direction: column;
    padding: 6px 0 4px;
  }

  .social {
    margin-left: auto;
  }

  .social__label {
    display: none;
  }
}

/* ---------- Pruh s nadpisem a uživatelským panelem ---------- */

.title-bar {
  background: #f7f9fa;
  border-bottom: 1px solid var(--cnt-border);
}

.title-bar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  min-height: 64px;
  padding-block: 10px;
}

.page-title,
.title-bar h1 {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  color: var(--cnt-blue);
  font-size: 1.35rem;
  font-weight: 700;
}

.page-title::before,
.title-bar h1::before {
  flex: none;
  width: 36px;
  height: 21px;
  background: url(../images/vlajka.png) center / contain no-repeat;
  content: "";
}

.title-bar__tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
}

.user-panel {
  display: flex;
  align-items: center;
  gap: 4px;
  height: var(--cnt-tool-h);
  margin: 0;
  padding: 0 4px;
  list-style: none;
  background: #fff;
  border: 1px solid var(--cnt-border);
  border-radius: 6px;
}

.user-panel__link {
  display: block;
  padding: 4px 10px 4px 30px;
  background: 8px center / 18px 18px no-repeat;
  color: var(--cnt-text);
  font-size: 0.85rem;
  font-weight: 700;
}

.user-panel__link--ucet { background-image: url(../images/ucet.png); }
.user-panel__link--odhlasit { background-image: url(../images/logout.png); }
.user-panel__link--prihlasit { background-image: url(../images/prihlaseni.png); }
.user-panel__link--registrace { background-image: url(../images/registration.png); }

.title-bar form.search-block-form {
  display: flex;
}

.title-bar .search-block-form input[type="search"] {
  width: 180px;
  height: var(--cnt-tool-h);
  padding: 0 10px;
  border: 1px solid var(--cnt-border);
  border-right: 0;
  border-radius: 6px 0 0 6px;
  font: inherit;
  font-size: 0.9rem;
}

.title-bar .search-block-form .form-actions {
  margin: 0;
}

.title-bar .search-block-form input[type="submit"] {
  display: block;
  width: 40px;
  height: var(--cnt-tool-h);
  border: 0;
  border-radius: 0 6px 6px 0;
  background: #3e9d37 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round'%3E%3Ccircle cx='10' cy='10' r='6.5'/%3E%3Cpath d='m15 15 6 6'/%3E%3C/svg%3E") center / 16px no-repeat;
  color: transparent;
  cursor: pointer;
}

.title-bar .search-block-form .form-item {
  margin: 0;
}

/* ---------- Obsah ---------- */

.main {
  padding-block: 24px 32px;
}

.main > * + * {
  margin-top: 24px;
}

.section-title {
  margin: 32px 0 14px;
  color: var(--cnt-red);
  font-size: 1.6rem;
}

.block-system-main-block > .node--full,
.node--full,
.main > .views-element-container,
.region-content > .views-element-container,
.taxonomy-term,
.intro,
.block-block-content.uvod {
  padding: 24px clamp(16px, 4vw, 40px);
  background: var(--cnt-surface);
  border-radius: var(--cnt-radius);
  box-shadow: var(--cnt-shadow);
}

.node--full .node__content {
  max-width: 860px;
}

.node--full table,
.node--full .node__content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

/* CKEditor 5 při uložení nahradí zastaralé align="center" třídou .table
   a tabulky sám středí; stejně se mají chovat i na webu. */
.node__content table.table {
  margin-inline: auto;
}

.node__content th {
  background: #59626a;
  color: #fff;
  text-align: left;
}

.node__content th,
.node__content td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--cnt-border);
}

.node__content tr:nth-child(even) td {
  background: #f5f7f8;
}

.node__content blockquote,
.quotecontent {
  margin: 0 0 1.2em;
  padding: 14px 18px;
  background: #f5f7f8;
  border-left: 4px solid var(--cnt-blue-light);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin: 0 0 12px;
  color: var(--cnt-muted);
  font-size: 0.85rem;
}

.meta__date {
  padding-left: 20px;
  background: url(../images/calendar.png) left center / 14px no-repeat;
}

.meta__author {
  padding-left: 20px;
  background: url(../images/user.png) left center / 14px no-repeat;
}

.field--name-field-kategorie,
.field--name-field-field-kat-content {
  margin-top: 24px;
  font-size: 0.9rem;
}

.field--name-field-kategorie .field__label,
.field--name-field-field-kat-content .field__label {
  color: var(--cnt-red);
  font-weight: 700;
}

/* ---------- Novinky: záložky a karty ---------- */

.tabs-novinky__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tabs-novinky__tab {
  padding: 8px 16px;
  border: 1px solid var(--cnt-border);
  border-radius: 999px;
  background: #fff;
  color: var(--cnt-text);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

.tabs-novinky__tab:hover {
  border-color: var(--cnt-red);
}

.tabs-novinky__tab[aria-selected="true"] {
  border-color: var(--cnt-red);
  background: var(--cnt-red);
  color: #fff;
}

.card-grid,
.view-taxonomy-term .view-content,
.view-novinky .view-content,
.view-frontpage .view-content {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 18px 20px;
  background: var(--cnt-surface);
  border-radius: var(--cnt-radius);
  border-top: 3px solid var(--cnt-red);
  box-shadow: var(--cnt-shadow);
}

.card__title {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.card__title a {
  color: var(--cnt-red);
}

.card__body {
  flex: 1;
  overflow: hidden;
  font-size: 0.9rem;
}

.card__body img {
  display: none;
}

.card__more {
  align-self: flex-start;
  margin-top: 12px;
}

.button {
  display: inline-block;
  padding: 8px 16px;
  border: 0;
  border-radius: 6px;
  background: var(--cnt-red);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.button:hover,
.button:focus {
  background: var(--cnt-red-dark);
  color: #fff;
  text-decoration: none;
}

.button--small {
  padding: 5px 12px;
  font-size: 0.85rem;
}

.more-link {
  margin: 14px 0 0;
  font-weight: 700;
  text-align: right;
}

/* ---------- Rubriky (dlaždice) ---------- */

.rubriky ul {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.rubriky li a {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  background: #fff;
  border-radius: var(--cnt-radius);
  box-shadow: var(--cnt-shadow);
  color: var(--cnt-c, var(--cnt-blue));
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.rubriky li a:hover,
.rubriky li a:focus {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgb(0 0 0 / 0.12);
  text-decoration: none;
}

.rubriky li a span {
  display: block;
  aspect-ratio: 16 / 9;
  margin-bottom: 10px;
  background: var(--cnt-c) var(--cnt-icon) center / 52px no-repeat;
  color: transparent;
}

.rubriky li a {
  padding-bottom: 10px;
}

#astrofyzika { --cnt-c: #28446d; --cnt-icon: url(../images/rubriky/astrofyzika.png); }
#biologie { --cnt-c: #286d3a; --cnt-icon: url(../images/rubriky/biologie.png); }
#distribuovane-vypocty { --cnt-c: #1a7cc1; --cnt-icon: url(../images/rubriky/distribuovane-vypocty.png); }
#kryptografie { --cnt-c: #3b3b3b; --cnt-icon: url(../images/rubriky/kryptografie.png); }
#veda { --cnt-c: #415a53; --cnt-icon: url(../images/rubriky/veda.png); }
#zeme { --cnt-c: #6a6a6a; --cnt-icon: url(../images/rubriky/zeme.png); }
#ostatni { --cnt-c: #893923; --cnt-icon: url(../images/rubriky/ostatni.png); }
#testy-a-hardware { --cnt-c: #2a8c43; --cnt-icon: url(../images/rubriky/testy-a-hardware.png); }
#articles-and-instructions { --cnt-c: #967400; --cnt-icon: url(../images/rubriky/articles-and-instructions.png); }
#navody-a-nastaveni { --cnt-c: #a55a29; --cnt-icon: url(../images/rubriky/navody-a-nastaveni.png); }
#cnt { --cnt-c: #aa1313; --cnt-icon: url(../images/rubriky/cnt.png); }
#profily { --cnt-c: #541173; --cnt-icon: url(../images/rubriky/profily.png); }

@media (max-width: 1000px) {
  .rubriky ul {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 640px) {
  .rubriky ul {
    grid-template-columns: repeat(2, 1fr);
  }

  .rubriky li a span {
    aspect-ratio: 2 / 1;
  }
}

/* ---------- Podpořte nás + partneři ---------- */

.support {
  margin-bottom: 32px;
  padding: 0;
  overflow: hidden;
  background: var(--cnt-surface);
  border-radius: var(--cnt-radius);
  box-shadow: var(--cnt-shadow);
}

.support__band {
  display: block;
  padding: 14px 16px;
  background: var(--cnt-blue);
  border-bottom: 3px solid var(--cnt-red);
  color: #fff;
  text-align: center;
}

.support__band:hover {
  background: var(--cnt-blue-dark);
  text-decoration: none;
}

.support__band strong {
  display: block;
  font-size: 1.2rem;
}

.support__band span {
  color: #b9d3f2;
  font-size: 0.85rem;
}

.region-partneri {
  padding: 16px;
}

.region-partneri div:has(> p) {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.region-partneri p {
  margin: 0;
}

.region-partneri img {
  max-height: 64px;
  width: auto;
  padding: 6px 10px;
  border: 1px solid var(--cnt-border);
  border-radius: 6px;
}

/* ---------- Patička ---------- */

.site-footer {
  background: #1f2a36;
  color: #a9b3bd;
  font-size: 0.85rem;
}

.site-footer a {
  color: #fff;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 18px;
}

.to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: var(--cnt-blue);
  box-shadow: var(--cnt-shadow);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
}

/* ---------- Drupal: zprávy, záložky správce, stránkování, formuláře ---------- */

.messages {
  margin-bottom: 16px;
  padding: 12px 16px;
  background: #f1f8e9;
  border: 1px solid #b7d99a;
  border-radius: var(--cnt-radius);
}

.messages--error {
  background: #fdecea;
  border-color: #f2a8a1;
}

.messages--warning {
  background: #fff8e1;
  border-color: #f1d27a;
}

ul.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

ul.tabs a {
  display: block;
  padding: 5px 12px;
  border-radius: 6px;
  background: var(--cnt-blue);
  color: #fff;
  font-size: 0.85rem;
}

ul.tabs a.is-active {
  background: var(--cnt-blue-dark);
}

.pager__items {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.pager__item a {
  display: block;
  padding: 6px 12px;
  border-radius: 6px;
  background: #fff;
  box-shadow: var(--cnt-shadow);
}

.pager__item.is-active a {
  background: var(--cnt-red);
  color: #fff;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
textarea,
select {
  max-width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--cnt-border);
  border-radius: 6px;
  font: inherit;
}

input[type="submit"]:not(.title-bar input) {
  padding: 8px 16px;
  border: 0;
  border-radius: 6px;
  background: var(--cnt-red);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.form-item {
  margin-bottom: 14px;
}

.form-item label {
  display: block;
  font-weight: 700;
}