:root {
  --brand-blue: #004e91;
  --brand-dark: #10161f;
  --brand-dark-soft: #171f2a;
  --brand-dark-lift: #202a36;
  --turquoise: #18c9bc;
  --paper: #f4f7f8;
  --muted: #9ca8b4;
  --line: rgba(255, 255, 255, 0.14);
  --content: min(92vw, 1440px);
  --header-height: 92px;
  --ease: cubic-bezier(.2, .75, .25, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--brand-dark);
  color: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  overflow-x: clip;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 1000;
  padding: .75rem 1rem;
  background: var(--paper);
  color: var(--brand-dark);
  translate: 0 -180%;
}

.skip-link:focus {
  translate: 0;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  min-height: var(--header-height);
  padding: 18px 4vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  transition: background .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(16, 22, 31, .9);
  border-color: var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  position: relative;
  z-index: 2;
}

.brand-surface {
  display: block;
  width: clamp(190px, 19vw, 300px);
  padding: 9px 12px;
  background: #fff;
}

.brand-surface img {
  width: 100%;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2.25rem);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.site-nav a {
  position: relative;
  padding: .75rem 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: .5rem;
  width: 100%;
  height: 1px;
  background: var(--turquoise);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .3s var(--ease);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-nav .nav-cta {
  padding: .85rem 1rem;
  background: var(--turquoise);
  color: var(--brand-dark);
  font-weight: 700;
}

.site-nav .nav-cta::after {
  display: none;
}

.menu-button {
  display: none;
  border: 0;
  background: transparent;
  color: var(--paper);
  text-transform: uppercase;
  letter-spacing: .08em;
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--header-height) + 6vh) 4vw 7vh;
  background:
    radial-gradient(circle at 82% 25%, rgba(0, 78, 145, .25), transparent 34%),
    linear-gradient(180deg, var(--brand-dark), #0d131b);
}

.hero::after {
  content: "";
  position: absolute;
  left: 4vw;
  right: 4vw;
  bottom: 0;
  height: 1px;
  background: var(--line);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
}

.eyebrow {
  margin: 0 0 1.5rem;
  color: var(--turquoise);
  font-size: clamp(.72rem, .8vw, .88rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .14em;
}

.hero-title,
.statement-title,
.career h2,
.contact h2,
.section-heading h2 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -.065em;
  line-height: .88;
}

.hero-title {
  font-size: clamp(4.6rem, 11.6vw, 12.5rem);
  max-width: 94vw;
  text-transform: uppercase;
}

.hero-title span {
  display: block;
}

.hero-title .accent-word {
  color: var(--turquoise);
}

.hero-bottom {
  margin-top: 4vh;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
}

.hero-bottom p {
  max-width: 480px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.35vw, 1.3rem);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--paper);
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.hero-backdrop span {
  position: absolute;
  z-index: 1;
  color: rgba(255, 255, 255, .025);
  font-size: clamp(8rem, 24vw, 28rem);
  font-weight: 700;
  line-height: 1;
  user-select: none;
  will-change: transform;
}

.hero-backdrop span:nth-child(1) {
  right: -2vw;
  top: 4vh;
}

.hero-backdrop span:nth-child(2) {
  right: 8vw;
  bottom: -7vh;
  color: rgba(24, 201, 188, .04);
}

.hero-backdrop span:nth-child(3) {
  left: -2vw;
  top: 25vh;
}

.scroll-cue {
  position: absolute;
  right: 1.3vw;
  bottom: 7vh;
  display: grid;
  justify-items: center;
  gap: .75rem;
  font-size: .65rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

.scroll-cue span {
  writing-mode: vertical-rl;
}

.scroll-cue i {
  width: 1px;
  height: 52px;
  background: var(--turquoise);
  transform-origin: top;
  animation: scroll-line 1.8s var(--ease) infinite;
}

@keyframes scroll-line {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

.reveal {
  opacity: 0;
  transform: translateY(46px);
  animation: reveal-up .8s var(--ease) forwards;
}

.reveal-delay {
  animation-delay: .1s;
}

.reveal-delay-2 {
  animation-delay: .2s;
}

@keyframes reveal-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tile-story {
  position: relative;
  height: 290vh;
  background: var(--brand-dark-soft);
}

.tile-sticky {
  position: sticky;
  top: 0;
  min-height: 100svh;
  padding: calc(var(--header-height) + 2vh) 4vw 3vh;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(220px, .72fr) minmax(0, 2.28fr);
  align-items: center;
  gap: clamp(2rem, 4vw, 5rem);
}

.section-heading {
  align-self: center;
}

.section-heading h2 {
  font-size: clamp(2.7rem, 5vw, 6rem);
}

.stage-label {
  margin: 2.25rem 0 0;
  color: var(--muted);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.tile-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(6px, .8vw, 14px);
  width: 100%;
  max-height: 80svh;
}

.service-tile {
  position: relative;
  aspect-ratio: 1;
  min-width: 0;
  overflow: hidden;
  padding: clamp(1rem, 1.6vw, 2rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  will-change: transform;
  transition: background-color .55s var(--ease);
}

.tone-navy {
  background: #253244;
}

.tone-blue {
  background: var(--brand-blue);
}

.tone-turquoise {
  background: var(--turquoise);
  color: var(--brand-dark);
}

.tile-index {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
}

.tile-index::after {
  content: "";
  display: block;
  width: 30px;
  height: 1px;
  margin-top: .75rem;
  background: currentColor;
  opacity: .55;
}

.tile-copy {
  position: relative;
  z-index: 2;
  transition: opacity .2s ease, transform .25s var(--ease);
}

.service-tile.is-changing .tile-copy {
  opacity: 0;
  transform: translateY(18px);
}

.tile-copy h3 {
  margin: 0 0 .55rem;
  font-size: clamp(1.08rem, 1.75vw, 2rem);
  line-height: 1;
  letter-spacing: -.04em;
}

.tile-copy p {
  margin: 0;
  max-width: 24ch;
  font-size: clamp(.78rem, .92vw, .98rem);
  opacity: .72;
}

.service-tile::after {
  content: attr(data-tile);
  position: absolute;
  right: -.08em;
  top: -.28em;
  color: currentColor;
  opacity: .055;
  font-size: clamp(7rem, 14vw, 15rem);
  font-weight: 700;
  line-height: 1;
}

.tile-progress {
  position: absolute;
  left: 4vw;
  right: 4vw;
  bottom: 1.5vh;
  height: 2px;
  background: rgba(255, 255, 255, .1);
}

.tile-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--turquoise);
}

.statement {
  position: relative;
  min-height: 110svh;
  padding: 16vh 4vw;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.statement-inner {
  position: relative;
  z-index: 2;
  width: var(--content);
  margin: 0 auto;
}

.statement-title {
  max-width: 1200px;
  font-size: clamp(3.2rem, 7.6vw, 9rem);
}

.statement-title span {
  color: var(--brand-blue);
}

.statement-copy {
  margin: 10vh 0 0 auto;
  max-width: 650px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  color: var(--muted);
}

.statement-copy p {
  margin: 0;
}

.statement-number,
.career-word {
  position: absolute;
  color: rgba(255, 255, 255, .025);
  font-weight: 700;
  line-height: 1;
  user-select: none;
  will-change: transform;
}

.statement-number {
  left: -3vw;
  top: 5vh;
  font-size: clamp(9rem, 25vw, 28rem);
}

.numbers {
  width: var(--content);
  margin: 0 auto 15vh;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.number-item {
  min-height: 310px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid var(--line);
}

.number-item:last-child {
  border-right: 0;
}

.number-item strong {
  color: var(--turquoise);
  font-size: clamp(3.5rem, 7vw, 8rem);
  line-height: .9;
  letter-spacing: -.07em;
}

.number-item span {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .75rem;
}

.career {
  position: relative;
  min-height: 100svh;
  padding: 15vh 4vw;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--brand-blue);
}

.career-content {
  position: relative;
  z-index: 2;
  width: var(--content);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 7vw;
  align-items: end;
}

.career h2 {
  max-width: 900px;
  font-size: clamp(4rem, 8vw, 9.5rem);
}

.career .eyebrow {
  color: var(--paper);
}

.career-details {
  font-size: clamp(1rem, 1.2vw, 1.2rem);
}

.career-details ul {
  margin: 2rem 0;
  padding: 0;
  list-style: none;
}

.career-details li {
  padding: .8rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, .28);
}

.career-word {
  right: -2vw;
  top: 2vh;
  color: rgba(255, 255, 255, .055);
  font-size: clamp(8rem, 24vw, 27rem);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-width: 210px;
  padding: 1rem 1.25rem;
  border: 0;
  cursor: pointer;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  transition: transform .25s var(--ease), background .25s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-4px);
}

.button-light {
  background: var(--paper);
  color: var(--brand-dark);
}

.button-accent {
  width: 100%;
  background: var(--turquoise);
  color: var(--brand-dark);
}

.contact {
  width: var(--content);
  margin: 0 auto;
  padding: 16vh 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8vw;
}

.contact h2 {
  max-width: 700px;
  font-size: clamp(4rem, 8vw, 9rem);
}

.contact-lead {
  max-width: 520px;
  margin: 2rem 0 4rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.3vw, 1.25rem);
}

.contact-list {
  border-top: 1px solid var(--line);
}

.contact-list a {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.contact-list span {
  color: var(--muted);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .1em;
}

.contact-list strong {
  font-size: clamp(1rem, 1.25vw, 1.25rem);
}

.contact-form-wrap {
  align-self: end;
  padding: clamp(1.5rem, 3vw, 3.5rem);
  background: var(--brand-dark-soft);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-field {
  margin-bottom: 1.25rem;
}

.form-field label {
  display: block;
  margin-bottom: .45rem;
  color: var(--muted);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .09em;
}

.form-field input,
.form-field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0;
  outline: none;
  background: transparent;
  color: var(--paper);
  padding: .9rem 1rem;
  transition: border-color .2s ease, background .2s ease;
}

.form-field textarea {
  resize: vertical;
  min-height: 150px;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--turquoise);
  background: rgba(255, 255, 255, .03);
}

.form-trap {
  position: absolute;
  left: -9999px;
}

.consent {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  margin: .5rem 0 1.5rem;
  color: var(--muted);
  font-size: .78rem;
}

.consent input {
  margin-top: .2rem;
  accent-color: var(--turquoise);
}

.form-message {
  margin: 0 0 1.5rem;
  padding: 1rem;
  background: rgba(24, 201, 188, .12);
  border-left: 3px solid var(--turquoise);
}

.form-message.is-error {
  background: rgba(255, 84, 84, .1);
  border-color: #ff5454;
}

.site-footer {
  padding: 2.5rem 4vw;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: end;
  gap: 3rem;
  color: var(--muted);
  font-size: .78rem;
}

.site-footer p {
  margin: .25rem 0;
}

.site-footer > div:last-child {
  text-align: right;
}

.footer-brand .brand-surface {
  width: min(280px, 100%);
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  :root {
    --header-height: 78px;
  }

  .menu-button {
    position: relative;
    z-index: 102;
    display: flex;
    align-items: center;
    gap: .7rem;
    cursor: pointer;
  }

  .menu-lines,
  .menu-lines::before {
    display: block;
    width: 24px;
    height: 1px;
    background: currentColor;
    transition: transform .3s ease;
  }

  .menu-lines::before {
    content: "";
    transform: translateY(7px);
  }

  .menu-button[aria-expanded="true"] .menu-lines {
    transform: rotate(45deg);
  }

  .menu-button[aria-expanded="true"] .menu-lines::before {
    transform: rotate(-90deg);
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 101;
    padding: 18vh 6vw 8vh;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    background: var(--brand-dark);
    transform: translateY(-100%);
    visibility: hidden;
    transition: transform .45s var(--ease), visibility .45s;
  }

  .site-nav.is-open {
    transform: translateY(0);
    visibility: visible;
  }

  .site-nav a {
    font-size: clamp(2.3rem, 7vw, 5.5rem);
    line-height: 1;
    letter-spacing: -.04em;
    text-transform: none;
  }

  .site-nav .nav-cta {
    margin-top: 1rem;
    font-size: 1rem;
    letter-spacing: .08em;
    text-transform: uppercase;
  }

  .tile-sticky {
    grid-template-columns: 1fr;
    align-content: center;
    gap: 2rem;
  }

  .section-heading {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 1rem;
  }

  .section-heading .eyebrow {
    grid-column: 1 / -1;
    margin-bottom: 0;
  }

  .section-heading h2 br {
    display: none;
  }

  .stage-label {
    margin: 0;
  }

  .tile-grid {
    max-width: 850px;
    margin: 0 auto;
  }

  .career-content {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 720px) {
  :root {
    --content: 90vw;
  }

  .site-header {
    padding-inline: 5vw;
  }

  .brand-surface {
    width: 190px;
  }

  .hero {
    padding-inline: 5vw;
    padding-bottom: 9vh;
  }

  .hero-title {
    font-size: clamp(4rem, 18vw, 7rem);
  }

  .hero-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .scroll-cue {
    display: none;
  }

  .tile-story {
    height: auto;
    padding: 12vh 0;
  }

  .tile-sticky {
    position: relative;
    min-height: auto;
    padding: 0 5vw;
    overflow: visible;
  }

  .section-heading {
    display: block;
  }

  .section-heading h2 {
    font-size: clamp(2.8rem, 14vw, 5rem);
  }

  .stage-label,
  .tile-progress {
    display: none;
  }

  .tile-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-height: none;
  }

  .service-tile {
    padding: 1rem;
    transform: none !important;
  }

  .tile-copy h3 {
    font-size: clamp(1rem, 5vw, 1.45rem);
  }

  .tile-copy p {
    font-size: .72rem;
  }

  .statement {
    min-height: 90svh;
    padding-inline: 5vw;
  }

  .statement-title {
    font-size: clamp(3.2rem, 13vw, 6rem);
  }

  .statement-copy {
    grid-template-columns: 1fr;
    margin-top: 4rem;
  }

  .numbers {
    grid-template-columns: 1fr;
  }

  .number-item {
    min-height: 210px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .number-item:last-child {
    border-bottom: 0;
  }

  .career {
    min-height: auto;
    padding: 14vh 5vw;
  }

  .career h2 {
    font-size: clamp(3.6rem, 15vw, 6.5rem);
  }

  .contact {
    grid-template-columns: 1fr;
    gap: 5rem;
    padding-block: 12vh;
  }

  .contact h2 {
    font-size: clamp(3.8rem, 16vw, 7rem);
  }

  .contact-form-wrap {
    padding: 1.35rem;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .contact-list a {
    grid-template-columns: 1fr;
    gap: .35rem;
  }

  .site-footer {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .site-footer > div:last-child {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .reveal,
  .reveal-on-scroll {
    opacity: 1;
    transform: none;
  }
}

/*
 * V2: Výškové přizpůsobení dlaždic pro široké a nižší monitory.
 * Mřížka si ponechá poměr 3 × 2, ale její šířka se nyní odvozuje také
 * od dostupné výšky obrazovky. Druhý řádek tak zůstane celý viditelný.
 */
@media (min-width: 721px) {
  .tile-grid {
    width: min(
      100%,
      calc((100svh - var(--header-height) - 8vh) * 1.5)
    );
    justify-self: end;
  }
}

@media (min-width: 721px) and (max-width: 1080px) {
  .tile-sticky {
    grid-template-columns: minmax(190px, .7fr) minmax(0, 2.3fr);
    align-items: center;
    align-content: normal;
  }

  .section-heading {
    display: block;
  }

  .section-heading .eyebrow {
    margin-bottom: 1.5rem;
  }

  .stage-label {
    margin-top: 1.25rem;
  }
}

/*
 * V3: Méně výrazný podklad loga.
 * Průhlednost je pouze na pozadí, takže samotné logo zůstává ostré.
 */
.brand-surface {
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(8px);
}

/*
 * V4: Podklad loga je stejně subtilní jako velké texty v pozadí.
 */
.brand-surface {
  background: rgba(255, 255, 255, .06);
}

/*
 * V5: Finální návrat k plnému bílému podkladu loga.
 */
.brand-surface {
  background: #fff;
  backdrop-filter: none;
}