/* =========================================================
   FIRIS s.r.o. — Design System
   Light, modern, consultant-corporate style
   ========================================================= */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f8fc;
  --color-bg-navy: #0b2545;
  --color-navy: #0b2545;
  --color-navy-700: #123061;
  --color-navy-600: #1a3d78;
  --color-primary: #2b5fe0;
  --color-primary-dark: #1e46b0;
  --color-primary-light: #eaf0fe;
  --color-teal: #0d9c95;
  --color-teal-light: #e4f7f5;
  --color-coral: #ff6b4a;
  --color-text: #16213e;
  --color-text-muted: #5b6478;
  --color-text-soft: #7c869c;
  --color-border: #e6eaf2;
  --color-border-strong: #d5dcea;

  --font-heading: "Plus Jakarta Sans", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --container: 1200px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --shadow-sm: 0 2px 8px rgba(11, 37, 69, 0.06);
  --shadow-md: 0 8px 24px rgba(11, 37, 69, 0.08);
  --shadow-lg: 0 20px 48px rgba(11, 37, 69, 0.12);

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 16px;
  color: var(--color-navy);
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 16px;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* ---------- Layout helpers ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section--tight {
  padding: 64px 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--navy {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.88);
}

.section--navy h1,
.section--navy h2,
.section--navy h3 {
  color: #fff;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-head--left {
  margin: 0 0 48px;
  text-align: left;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}

.eyebrow--teal {
  color: var(--color-teal);
  background: var(--color-teal-light);
}

.eyebrow--light {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

h2 {
  font-size: clamp(28px, 3.4vw, 42px);
}

h3 {
  font-size: clamp(20px, 2.2vw, 26px);
}

.lead {
  font-size: 19px;
  color: var(--color-text-muted);
}

.text-muted {
  color: var(--color-text-muted);
}

.grid {
  display: grid;
  gap: 32px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 980px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  border-color: var(--color-border-strong);
  color: var(--color-navy);
  background: #fff;
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.btn-outline-light:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 14px;
}

.btn-arrow {
  transition: transform var(--transition);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: var(--container);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 22px;
  color: var(--color-navy);
}

.logo__mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-teal));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 800;
}

.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav__links {
  display: flex;
  gap: 32px;
}

.nav__links a {
  font-weight: 600;
  font-size: 15px;
  color: var(--color-text);
  position: relative;
  padding: 6px 0;
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav__links a:hover::after,
.nav__links a.is-active::after {
  width: 100%;
}

.nav__links a.is-active {
  color: var(--color-primary);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lang-toggle {
  display: flex;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.lang-toggle button {
  border: none;
  background: transparent;
  padding: 7px 13px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-soft);
  transition: background var(--transition), color var(--transition);
}

.lang-toggle button.is-active {
  background: var(--color-navy);
  color: #fff;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-navy);
  margin: 5px 0;
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 500px) {
  .nav__actions .btn {
    display: none;
  }
}

@media (max-width: 900px) {
  .nav__links {
    position: fixed;
    z-index: 99;
    top: 73px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  .nav__links.is-open {
    max-height: 420px;
  }

  .nav__links a {
    padding: 16px 24px;
    border-top: 1px solid var(--color-border);
  }

  .nav__links a::after {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav {
    gap: 14px;
  }
}

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 100px;
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(34px, 5vw, 56px);
}

.hero__media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3.2;
}

.hero__badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: rgba(11, 37, 69, 0.88);
  backdrop-filter: blur(8px);
  color: #fff;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.hero__meta {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.hero__meta div {
  font-size: 13px;
  color: var(--color-text-soft);
}

.hero__meta strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 26px;
  color: var(--color-navy);
}

@media (max-width: 900px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }
  .hero { padding: 40px 0 64px; }
}

/* ---------- Stats bar ---------- */
.stats {
  background: var(--color-navy);
  padding: 56px 0;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stats__item strong {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(30px, 4vw, 44px);
  color: #fff;
}

.stats__item span {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}

@media (max-width: 700px) {
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Cards ---------- */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 22px;
}

.card__icon--teal {
  background: var(--color-teal-light);
  color: var(--color-teal);
}

.card h3 {
  margin-bottom: 10px;
}

.card p:last-child {
  margin-bottom: 0;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-weight: 700;
  font-size: 14px;
  color: var(--color-primary);
}

/* Image cards */
.card--media {
  padding: 0;
  overflow: hidden;
}

.card--media img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.card--media .card__body {
  padding: 28px;
}

/* ---------- Pills / tags ---------- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-navy);
}

.tag--teal {
  background: var(--color-teal-light);
  border-color: transparent;
  color: var(--color-teal);
}

/* ---------- Timeline / process steps ---------- */
.process {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process__step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  position: relative;
  padding-bottom: 40px;
}

.process__step:last-child {
  padding-bottom: 0;
}

.process__num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 17px;
  z-index: 1;
}

.process__step::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 48px;
  bottom: 0;
  width: 2px;
  background: var(--color-border-strong);
}

.process__step:last-child::before {
  display: none;
}

.process__content h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-navy);
  margin: 4px 0 8px;
}

.process__content p {
  color: var(--color-text-muted);
  margin: 0;
}

/* ---------- Timeline (about page) ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.timeline__item {
  border-left: 3px solid var(--color-primary);
  padding-left: 18px;
}

.timeline__year {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 20px;
  color: var(--color-primary);
}

@media (max-width: 900px) {
  .timeline { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .timeline { grid-template-columns: 1fr; }
}

/* ---------- Split section (image + text) ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.split--reverse .split__media {
  order: 2;
}

.split__media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  aspect-ratio: 4/3.3;
  object-fit: cover;
}

.split__checks {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 24px 0;
}

.split__checks li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.check {
  flex: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-teal-light);
  color: var(--color-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  margin-top: 2px;
}

@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; gap: 32px; }
  .split--reverse .split__media { order: 0; }
}

/* ---------- People / team ---------- */
.people {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.person {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.person__avatar {
  flex: none;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-teal));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 22px;
}

.person__role {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 8px;
  display: block;
}

@media (max-width: 700px) {
  .people { grid-template-columns: 1fr; }
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--color-navy) 0%, var(--color-navy-600) 100%);
  border-radius: var(--radius-lg);
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 20%, rgba(43, 95, 224, 0.35), transparent 55%),
              radial-gradient(circle at 85% 85%, rgba(13, 156, 149, 0.35), transparent 55%);
}

.cta-band > * {
  position: relative;
}

.cta-band h2 {
  color: #fff;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.75);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.cta-band__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 28px;
  flex-wrap: wrap;
}

/* ---------- AI highlight panel ---------- */
.ai-panel {
  background: linear-gradient(135deg, #0d9c95 0%, #2b5fe0 100%);
  border-radius: var(--radius-lg);
  padding: 56px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.ai-panel::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.ai-panel h2, .ai-panel h3 { color: #fff; }
.ai-panel p { color: rgba(255, 255, 255, 0.85); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 32px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__grid h5 {
  color: #fff;
  font-family: var(--font-heading);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.footer__grid ul li {
  margin-bottom: 10px;
}

.footer__grid a:hover {
  color: #fff;
}

.footer__logo {
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 22px;
  margin-bottom: 14px;
  display: block;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 12px;
}

@media (max-width: 900px) {
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .footer__grid { grid-template-columns: 1fr; }
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  padding: 64px 0 72px;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  font-size: clamp(32px, 4.4vw, 48px);
  max-width: 780px;
}

.page-hero p {
  max-width: 640px;
}

.breadcrumb {
  font-size: 13px;
  color: var(--color-text-soft);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--color-text-soft);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

/* ---------- Forms ---------- */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-field.full {
  grid-column: 1 / -1;
}

.form-field label {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-navy);
}

.form-field input,
.form-field textarea,
.form-field select {
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-strong);
  font-family: inherit;
  font-size: 15px;
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-light);
}

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
}

/* ---------- Contact cards ---------- */
.contact-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-card:last-child {
  border-bottom: none;
}

.contact-card__icon {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- Map ---------- */
.map-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.map-frame iframe {
  width: 100%;
  height: 100%;
  min-height: 320px;
  border: 0;
  display: block;
}

/* ---------- Scroll reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Misc ---------- */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: 64px 0;
}

.icon-check {
  color: var(--color-teal);
}

.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 90;
  border: none;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-4px);
}

/* ---------- Language switching ---------- */
body.lang-cs .lang-en { display: none !important; }
body.lang-en .lang-cs { display: none !important; }

/* ---------- Header scroll state ---------- */
.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}