/* ==========================================================================
   kodabey.cz – hlavní styly
   Barvy a základní rozměry jsou v proměnných níže – změna vzhledu = změna tokenů.
   ========================================================================== */

:root {
  --color-ink: #111827;           /* základní text i tmavé plochy */
  --color-ink-soft: #364153;      /* sekundární text */
  --color-primary: #111827;       /* tlačítka a CTA (tmavé pilulky) */
  --color-primary-dark: #000000;
  --color-accent: #c8ff3d;        /* limetkový akcent */
  --color-accent-2: #ff5f2e;      /* oranžový akcent */
  --color-blue: #3455ff;          /* odkazy a focus */
  --color-bg: #f6f3ec;            /* papírové pozadí */
  --color-bg-alt: #ebe7de;
  --color-card: #ffffff;
  --color-line: rgba(17, 24, 39, 0.16);
  --color-footer-bg: #111827;
  --color-footer-ink: rgba(255, 255, 255, 0.7);

  --font-base: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, "Helvetica Neue", Arial, sans-serif;

  --container: 1240px;
  --radius: 20px;
  --shadow: 0 26px 80px rgba(17, 24, 39, 0.14);
}

/* ----- základ ----- */

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 17px;
  line-height: 1.65;
  color: var(--color-ink);
  background: var(--color-bg);
}

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

a { color: var(--color-blue); text-decoration: none; }
a:hover { color: var(--color-ink); text-decoration: underline; }

h1, h2, h3 { line-height: 1.25; color: var(--color-ink); }
h2 { font-size: 1.7rem; margin: 0 0 1.2rem; }
h3 { font-size: 1.15rem; margin: 0 0 0.5rem; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.container-narrow { max-width: 780px; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 16px;
  z-index: 100;
}
.skip-link:focus { left: 0; color: #fff; }

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

/* ----- hlavička ----- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 243, 236, 0.86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-ink);
}

.brand-mark {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 36px;
  overflow: hidden;
  border-radius: 10px;
  background: var(--color-ink);
  color: transparent;
  font-size: 0;
}

.brand-mark::before,
.brand-mark::after {
  position: absolute;
  content: "";
  width: 15px;
  height: 15px;
  transform: rotate(45deg);
}

.brand-mark::before {
  left: -5px;
  bottom: -4px;
  background: var(--color-accent);
}

.brand-mark::after {
  top: -5px;
  right: -4px;
  background: var(--color-accent-2);
}

.brand-name {
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 1.05rem;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: block;
  padding: 8px 12px;
  text-decoration: none;
  color: var(--color-ink-soft);
  font-weight: 500;
  border-radius: 8px;
}

.site-nav a:hover { color: var(--color-primary-dark); background: var(--color-bg-alt); }

.site-nav .nav-cta {
  background: var(--color-primary);
  color: #fff;
  border-radius: 999px;
}
.site-nav .nav-cta:hover { background: var(--color-primary-dark); color: #fff; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  background: none;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle-bar {
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 1px;
}

/* ----- hero ----- */

.hero {
  background: linear-gradient(145deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, #1a5c9e 100%);
  color: #fff;
  padding: 88px 0 96px;
}

.hero h1 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.1rem);
  margin: 0 0 0.4rem;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 600;
  color: #cfe3f6;
  margin: 0 0 1rem;
}

.hero-lead {
  max-width: 560px;
  font-size: 1.08rem;
  color: #e4eef8;
  margin: 0 0 1.8rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.btn-primary { background: #fff; color: var(--color-primary-dark); }
.btn-primary:hover { background: #e4eef8; color: var(--color-primary-dark); }

.btn-ghost {
  border: 2px solid rgba(255, 255, 255, 0.7);
  color: #fff;
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); color: #fff; }

.page .btn-primary { background: var(--color-primary); color: #fff; }
.page .btn-primary:hover { background: var(--color-primary-dark); }

/* ----- sekce ----- */

.section { padding: 64px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-text { max-width: 760px; }
.section-text p { margin: 0 0 1rem; }

/* ----- karty ----- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 20px;
}

.cards-4 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }

.card {
  background: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.card p { margin: 0 0 0.8rem; color: var(--color-ink-soft); }
.card p:last-child { margin-bottom: 0; }

.card-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 999px;
  margin: 0 0 0.9rem;
}

.card-badge-live { background: #e2f4f1; color: #1c6e63; }
.card-badge-dev { background: #e8effa; color: var(--color-primary-dark); }

.card-link { font-weight: 600; text-decoration: none; }
.card-link:hover { text-decoration: underline; }

.card-service h3 { color: var(--color-primary-dark); }

/* ----- kontakt ----- */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 20px;
  max-width: 760px;
}

.contact-card {
  background: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.contact-card p { margin: 0 0 0.4rem; }

.contact-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.contact-value { font-size: 1.15rem; font-weight: 600; }

.support-card { margin: 1.5rem 0 2rem; max-width: 420px; }

/* ----- podstránky ----- */

.page { padding: 48px 0 72px; }
.page h1 { font-size: 2.4rem; margin: 0 0 0.5rem; font-weight: 800; letter-spacing: -0.04em; }
.page h2 { font-size: 1.3rem; margin: 2rem 0 0.7rem; }
.page-updated { color: var(--color-ink-soft); font-size: 0.92rem; margin: 0 0 2rem; }

.error-page { text-align: center; padding-top: 40px; }
.error-code {
  font-size: 5.5rem;
  font-weight: 800;
  color: var(--color-line);
  margin: 0;
  line-height: 1;
}

/* ----- patička ----- */

.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-ink);
  padding: 48px 0 0;
  margin-top: 40px;
}

.site-footer a { color: #fff; }
.site-footer a:hover { color: var(--color-accent); text-decoration: none; }

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  padding-bottom: 32px;
}

.footer-col p { margin: 0 0 0.6rem; }

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  font-size: 1.05rem;
}

.footer-heading {
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}

.footer-court {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.5);
  max-width: 320px;
}

.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin: 0 0 0.5rem; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 18px;
  padding-bottom: 18px;
  font-size: 0.9rem;
}
.footer-bottom p { margin: 0; }

/* ----- responzivita ----- */

@media (max-width: 760px) {
  .nav-toggle { display: flex; }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open { display: block; }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 20px 16px;
  }

  .site-nav a { padding: 12px; }

  .hero { padding: 56px 0 64px; }
  .section { padding: 48px 0; }
}