:root {
  --navy: #061426;
  --navy-soft: #0a213d;
  --panel: rgba(13, 42, 72, 0.72);
  --line: rgba(112, 190, 224, 0.17);
  --text: #f7fbff;
  --muted: #a9bbcc;
  --cyan: #18d4c7;
  --cyan-bright: #26ede0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 72% 16%, rgba(20, 124, 181, 0.2), transparent 32rem),
    linear-gradient(180deg, #061426 0%, #071a30 62%, #061426 100%);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.wrap {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.045em;
  text-decoration: none;
}

.logo span,
h1 span {
  color: var(--cyan);
}

.site-header nav {
  display: flex;
  gap: 38px;
}

.site-header nav a {
  color: #dbe6ef;
  font-size: 0.97rem;
  text-decoration: none;
  transition: color 180ms ease;
}

.site-header nav a:hover,
.site-header nav a:focus-visible {
  color: var(--cyan-bright);
}

.hero {
  min-height: 650px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(430px, 0.92fr);
  align-items: center;
  gap: 34px;
  padding-block: 56px 86px;
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--cyan);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 730px;
  margin-bottom: 24px;
  font-size: clamp(3rem, 5vw, 4.75rem);
  line-height: 1.06;
  letter-spacing: -0.055em;
}

.lead {
  max-width: 650px;
  margin-bottom: 32px;
  color: #c1cfdb;
  font-size: 1.17rem;
  line-height: 1.8;
}

.primary-button {
  width: fit-content;
  min-height: 62px;
  display: inline-flex;
  align-items: center;
  gap: 13px;
  padding: 0 24px;
  border: 1px solid rgba(83, 255, 238, 0.66);
  border-radius: 10px;
  background: linear-gradient(135deg, #08aca5, #19d6c8);
  box-shadow: 0 14px 34px rgba(9, 214, 198, 0.15);
  color: #031a24;
  font-weight: 800;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.primary-button:hover,
.primary-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 18px 42px rgba(9, 214, 198, 0.26);
}

.primary-button svg {
  width: 24px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.availability {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.availability::before {
  content: "";
  width: 8px;
  height: 8px;
  display: inline-block;
  margin-right: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 16px var(--cyan);
}

.hero-art {
  position: relative;
  min-height: 430px;
  isolation: isolate;
}

.hero-image {
  margin-right: -8vw;
}

.hero-image img {
  width: 128%;
  height: 100%;
  position: absolute;
  inset: 0 auto 0 -12%;
  object-fit: cover;
  object-position: 68% center;
  mask-image: linear-gradient(90deg, transparent 0, #000 13%, #000 93%, transparent 100%);
  filter: saturate(0.92) contrast(1.03);
}

.hero-art::before {
  content: "";
  position: absolute;
  inset: 14% 2% 0;
  z-index: -3;
  background-image:
    linear-gradient(rgba(41, 161, 211, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(41, 161, 211, 0.12) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle, #000 5%, transparent 70%);
  transform: perspective(500px) rotateX(62deg);
}

.hero-art::after {
  content: "";
  position: absolute;
  width: 82%;
  height: 45%;
  left: 12%;
  bottom: 4%;
  z-index: -2;
  border-radius: 50%;
  background: rgba(0, 205, 255, 0.22);
  filter: blur(55px);
}

.glass-panel {
  position: absolute;
  width: 78%;
  height: 62%;
  left: 13%;
  top: 12%;
  overflow: hidden;
  border: 1px solid rgba(159, 229, 255, 0.65);
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(27, 80, 118, 0.8), rgba(7, 31, 61, 0.62));
  box-shadow:
    inset 0 0 38px rgba(57, 187, 255, 0.09),
    0 0 0 7px rgba(38, 124, 175, 0.1),
    0 24px 55px rgba(0, 0, 0, 0.42),
    0 0 40px rgba(0, 213, 255, 0.16);
  transform: perspective(900px) rotateY(-9deg) rotateX(3deg);
}

.chart {
  position: absolute;
  left: 10%;
  bottom: 15%;
  width: 51%;
  height: 55%;
  display: flex;
  align-items: flex-end;
  gap: 8%;
  border-bottom: 1px solid rgba(88, 218, 255, 0.28);
  border-left: 1px solid rgba(88, 218, 255, 0.28);
  padding: 0 6%;
}

.chart i {
  flex: 1;
  background: linear-gradient(#14dccc, #0e6492);
  border: 1px solid rgba(62, 237, 255, 0.38);
}

.chart-line {
  position: absolute;
  left: 10%;
  top: 18%;
  width: 52%;
  fill: none;
  stroke: #35f5e7;
  stroke-width: 3;
  filter: drop-shadow(0 0 7px #18d4c7);
}

.chart-copy {
  position: absolute;
  width: 22%;
  right: 8%;
  top: 42%;
}

.chart-copy::before {
  content: "";
  width: 68px;
  height: 68px;
  display: block;
  margin: 0 auto 28px;
  border: 14px solid rgba(23, 213, 204, 0.82);
  border-right-color: rgba(31, 107, 160, 0.78);
  border-radius: 50%;
}

.chart-copy span {
  height: 6px;
  display: block;
  margin-top: 10px;
  border-radius: 9px;
  background: rgba(85, 197, 229, 0.45);
}

.node {
  position: absolute;
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(75, 227, 255, 0.57);
  border-radius: 50%;
  background: rgba(9, 46, 82, 0.92);
  box-shadow: 0 0 0 7px rgba(26, 118, 165, 0.1), 0 0 30px rgba(23, 213, 225, 0.24);
}

.node svg {
  width: 32px;
  fill: none;
  stroke: #40e7dc;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.node-shield {
  left: 2%;
  bottom: 13%;
}

.node-search {
  right: 0;
  top: 27%;
}

.node-doc {
  right: 10%;
  bottom: 3%;
}

.orbit {
  position: absolute;
  border: 1px solid rgba(43, 197, 233, 0.17);
  border-radius: 50%;
}

.orbit-one {
  inset: 7% 0 4%;
  transform: rotate(-10deg);
}

.orbit-two {
  inset: 21% 9% 1%;
  transform: rotate(16deg);
}

.use-cases {
  padding-block: 90px;
}

.section-heading {
  max-width: 660px;
  margin-bottom: 38px;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 3.4vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.use-card {
  min-height: 280px;
  padding: 30px 26px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(13, 47, 80, 0.79), rgba(7, 28, 52, 0.64));
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.12);
}

.card-icon {
  width: 60px;
  height: 60px;
  display: grid;
  place-items: center;
  margin-bottom: 28px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
}

.card-icon svg {
  width: 28px;
  fill: none;
  stroke: var(--cyan);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.55;
}

.use-card h3 {
  min-height: 48px;
  margin-bottom: 17px;
  font-size: 1.12rem;
  line-height: 1.35;
}

.use-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.72;
}

.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 90px;
  padding-block: 100px;
  border-top: 1px solid var(--line);
}

.about > p {
  margin: 0;
  color: #bdcbd7;
  font-size: 1.08rem;
  line-height: 1.9;
}

.contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin-block: 70px 110px;
  padding: 52px;
  border: 1px solid rgba(42, 220, 209, 0.25);
  border-radius: 18px;
  background:
    radial-gradient(circle at 86% 30%, rgba(14, 216, 201, 0.12), transparent 19rem),
    rgba(9, 37, 65, 0.8);
}

.contact h2 {
  max-width: 620px;
}

.contact p:not(.eyebrow) {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
}

.logo.small {
  font-size: 1.35rem;
}

.footer-inner p {
  max-width: 760px;
  margin: 0;
  color: #8298aa;
  font-size: 0.82rem;
  line-height: 1.7;
  text-align: right;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 70px;
  }

  .hero-copy {
    position: relative;
    z-index: 2;
  }

  .hero-art {
    min-height: 390px;
  }

  .hero-image {
    margin-right: 0;
  }

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

@media (max-width: 720px) {
  .wrap {
    width: min(100% - 32px, 1180px);
  }

  .site-header {
    height: 76px;
  }

  .logo {
    font-size: 1.55rem;
  }

  .site-header nav {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-block: 58px 45px;
  }

  h1 {
    font-size: clamp(2.65rem, 14vw, 4rem);
  }

  .lead {
    font-size: 1.03rem;
  }

  .primary-button {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .hero-art {
    min-height: 300px;
  }

  .hero-image img {
    width: 122%;
    left: -11%;
  }

  .node {
    width: 56px;
    height: 56px;
  }

  .node svg {
    width: 25px;
  }

  .use-cases {
    padding-block: 70px;
  }

  .card-grid,
  .about {
    grid-template-columns: 1fr;
  }

  .use-card {
    min-height: 0;
  }

  .about {
    gap: 22px;
    padding-block: 75px;
  }

  .contact {
    align-items: stretch;
    flex-direction: column;
    margin-block: 55px 75px;
    padding: 34px 24px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
    padding-block: 35px;
  }

  .footer-inner p {
    text-align: left;
  }
}

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

  * {
    transition: none !important;
  }
}

/* Kompaktní desktopová varianta podle schváleného návrhu. */
@media (min-width: 981px) {
  main {
    min-height: 100svh;
    display: flex;
    flex-direction: column;
  }

  .site-header {
    height: 72px;
  }

  .logo {
    font-size: 1.75rem;
  }

  .site-header nav {
    gap: 34px;
  }

  .hero {
    min-height: 0;
    height: 430px;
    grid-template-columns: minmax(0, 1fr) minmax(420px, 0.92fr);
    padding-block: 20px 22px;
  }

  h1 {
    max-width: 680px;
    margin-bottom: 18px;
    font-size: clamp(2.8rem, 4.2vw, 4.15rem);
  }

  .eyebrow {
    margin-bottom: 15px;
  }

  .lead {
    max-width: 620px;
    margin-bottom: 22px;
    font-size: 1.05rem;
    line-height: 1.65;
  }

  .primary-button {
    min-height: 56px;
  }

  .availability {
    margin-top: 17px;
  }

  .hero-art {
    min-height: 350px;
  }

  .use-cases {
    padding-block: 0 26px;
  }

  .card-grid {
    gap: 14px;
  }

  .use-card {
    min-height: 205px;
    padding: 22px 20px;
  }

  .card-icon {
    width: 52px;
    height: 52px;
    margin-bottom: 18px;
  }

  .card-icon svg {
    width: 24px;
  }

  .use-card h3 {
    min-height: 42px;
    margin-bottom: 10px;
    font-size: 1rem;
  }

  .use-card p {
    font-size: 0.82rem;
    line-height: 1.55;
  }

  .site-footer {
    margin-top: auto;
  }

  .footer-inner {
    min-height: 60px;
    justify-content: center;
  }

  .footer-inner p {
    max-width: none;
    font-size: 0.76rem;
    text-align: center;
  }
}