/* ROOT TECH d.o.o. — plain corporate one-pager */

:root {
  --blue: #0a5a9c;
  --blue-dark: #07457a;
  --blue-tint: #eef4fa;
  --blue-line: #d5e3f0;
  --text: #1f2a37;
  --muted: #56657a;
  --white: #ffffff;
  --radius: 10px;
  --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--white);
}

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

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

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.6em; color: var(--text); }
h1 { font-size: clamp(1.9rem, 1.2rem + 2.6vw, 3rem); font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2.1rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}
.container.narrow { max-width: 780px; }

/* Skip link */
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  background: var(--blue);
  color: var(--white);
  padding: 10px 14px;
  border-radius: 6px;
  z-index: 100;
}
.skip-link:focus { top: 12px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--blue-line);
  backdrop-filter: blur(6px);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 72px;
  padding-top: 10px;
  padding-bottom: 10px;
}
.brand { flex: none; display: block; }
.brand img { width: 180px; height: auto; }

.site-nav { margin-left: auto; }
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 4px;
}
.site-nav a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
}
.site-nav a:hover { background: var(--blue-tint); color: var(--blue-dark); text-decoration: none; }

/* Hero */
.hero {
  position: relative;
  background: var(--white) url("/assets/bg.jpg") no-repeat left center;
  background-size: cover;
  border-bottom: 1px solid var(--blue-line);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.55) 0%, rgba(255,255,255,0.88) 45%, rgba(255,255,255,0.97) 100%);
}
.hero-inner {
  position: relative;
  padding-top: clamp(56px, 8vw, 110px);
  padding-bottom: clamp(56px, 8vw, 110px);
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.hero h1 { color: var(--blue-dark); }
.lead {
  font-size: clamp(1.05rem, 0.95rem + 0.5vw, 1.3rem);
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 1.6em;
}

.button {
  display: inline-block;
  background: var(--blue);
  color: var(--white);
  font-weight: 600;
  padding: 13px 26px;
  border-radius: 8px;
  border: 2px solid var(--blue);
  transition: background 0.15s ease, border-color 0.15s ease;
}
.button:hover { background: var(--blue-dark); border-color: var(--blue-dark); text-decoration: none; }

/* Sections */
.section { padding: clamp(56px, 7vw, 96px) 0; }
.section h2 { text-align: center; }
.section-intro {
  text-align: center;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 2.4em;
}

.services { background: var(--white); }

.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}
@media (min-width: 700px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
}

.card {
  background: var(--white);
  border: 1px solid var(--blue-line);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.card:hover {
  border-color: var(--blue);
  box-shadow: 0 6px 20px rgba(10, 90, 156, 0.08);
}
.card p { margin: 0; color: var(--muted); }
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--blue-tint);
  color: var(--blue);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
}
.card-icon svg { width: 26px; height: 26px; }

.about { background: var(--blue-tint); }
.about p { font-size: 1.08rem; text-align: center; color: var(--text); }
.about p:last-child { margin-bottom: 0; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 2em;
}
@media (min-width: 760px) {
  .contact-grid { grid-template-columns: repeat(3, 1fr); }
}
.contact-block {
  border-top: 3px solid var(--blue);
  padding-top: 18px;
}
.contact-block h3 { font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--blue-dark); }
.contact-block a { font-weight: 600; word-break: break-all; }
address { font-style: normal; margin: 0 0 14px; }
address:last-child { margin-bottom: 0; }

dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; }
dt { color: var(--muted); }
dd { margin: 0; font-variant-numeric: tabular-nums; word-break: break-all; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--blue-line);
  padding: 26px 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.footer-inner p { margin: 0; }
.footer-mark { width: 28px; height: 28px; }

/* Small screens */
@media (max-width: 480px) {
  body { font-size: 16px; }
  .card { padding: 22px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card, .button { transition: none; }
}

/* Language switcher: flag + code, thin dividers between items, active one in blue */
.lang-nav { flex: none; }
.lang-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
}
.lang-nav li { display: flex; align-items: center; }
.lang-nav li + li::before {
  content: "";
  width: 1px;
  height: 14px;
  background: var(--blue-line);
}
.lang-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1;
  white-space: nowrap;
}
.lang-nav a:hover { color: var(--blue-dark); background: var(--blue-tint); text-decoration: none; }
.lang-nav a[aria-current="page"] { color: var(--blue-dark); }
.lang-nav a[aria-current="page"] .lang-code {
  text-decoration: underline;
  text-decoration-color: var(--blue);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}
.flag {
  display: block;
  flex: none;
  width: 18px;
  height: 13px;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(31, 42, 55, 0.18);
}

/* Header on narrow screens: logo left + languages right on row one, menu centred on row two */
@media (max-width: 760px) {
  .header-inner { flex-wrap: wrap; gap: 0 12px; padding-top: 12px; padding-bottom: 8px; }
  .brand { order: 1; margin-right: auto; }
  .brand img { width: 150px; }
  .lang-nav { order: 2; }
  .lang-nav a { padding: 8px 8px; }
  .site-nav { order: 3; flex-basis: 100%; margin: 6px 0 0; }
  .site-nav ul { justify-content: center; }
}

/* Small screens */
@media (max-width: 480px) {
  body { font-size: 16px; }
  .brand img { width: 150px; }
  .site-nav a { padding: 8px 9px; font-size: 0.95rem; }
  .card { padding: 22px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card, .button { transition: none; }
}

/* Language switcher: small flags + code, quiet by default, active one underlined.
   Design reviewed with Codex: 44px touch targets, explicit focus ring, flags never dimmed. */
.lang-nav { flex: 0 0 auto; max-width: 100%; }
.lang-nav ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.lang-nav li { display: flex; margin: 0; padding: 0; }
.lang-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 44px;
  padding: 0 6px;
  border-radius: 4px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.025em;
  white-space: nowrap;
}
.lang-nav a:hover,
.lang-nav a:focus-visible { background: var(--blue-tint); color: var(--blue); text-decoration: none; }
.lang-nav a:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.lang-nav a[aria-current="page"] { color: var(--blue); }
.lang-nav a[aria-current="page"] .lang-code {
  text-decoration-line: underline;
  text-decoration-color: var(--blue);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}
.lang-nav .flag {
  display: block;
  flex: 0 0 18px;
  width: 18px;
  height: 13px;
  overflow: hidden;
  border-radius: 2px;
  box-shadow: 0 0 0 1px var(--blue-line);
}

@media (max-width: 640px) {
  .header-inner { flex-wrap: wrap; }
  .brand { order: 1; }
  .lang-nav { order: 2; }
  .site-nav { order: 3; flex-basis: 100%; }
  .site-nav ul { justify-content: center; }
}

/* Footer legal text */
.legal {
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--muted);
  text-align: center;
  max-width: 900px;
  margin: 0 auto 18px;
}