/*
  02 — Signal Lab
  A poster-like treatment of the same shared HTML used in every example.
  The markup and its order are intentionally left untouched.
*/

:root {
  color-scheme: light;
  --paper: #f3f1e8;
  --cobalt: #253bd6;
  --lime: #dcfa4c;
  --ink: #171d38;
  --line: #171d38;
  --muted: #46506a;
  --content: 1220px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

::selection {
  background: var(--lime);
  color: var(--ink);
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

a:focus-visible {
  outline: 3px solid currentColor;
  outline-offset: 5px;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  transform: translateY(-160%);
  padding: 12px 16px;
  background: var(--lime);
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

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

/* The top line acts as a compact masthead, not as another hero. */
.site-header {
  position: relative;
  z-index: 2;
  background: var(--cobalt);
  color: #fff;
  border-bottom: 2px solid var(--ink);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 82px;
}

.brand {
  display: inline-block;
  max-width: 320px;
  font-size: 0.88rem;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.025em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px 28px;
}

.site-nav a {
  padding-block: 8px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-bottom-color: var(--lime);
}

/* The rings and stripes are CSS shapes; the three gallery images are local files. */
.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--lime);
  color: var(--cobalt);
  border-bottom: 2px solid var(--line);
}

.hero::before {
  position: absolute;
  z-index: -1;
  top: -210px;
  right: max(-340px, calc((100vw - var(--content)) / 2 - 330px));
  width: 940px;
  aspect-ratio: 1;
  content: "";
  border: 2px solid currentColor;
  border-radius: 50%;
  opacity: 0.27;
  box-shadow:
    0 0 0 56px var(--lime),
    0 0 0 58px currentColor,
    0 0 0 116px var(--lime),
    0 0 0 118px currentColor,
    0 0 0 176px var(--lime),
    0 0 0 178px currentColor;
}

.hero::after {
  position: absolute;
  z-index: -1;
  right: 0;
  bottom: 0;
  left: 0;
  height: 12px;
  content: "";
  background: repeating-linear-gradient(90deg, var(--cobalt) 0 36px, transparent 36px 56px);
}

.hero__content {
  width: 100%;
  max-width: 100%;
}

.hero__inner {
  min-height: 680px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding-block: 76px 92px;
}

.eyebrow,
.section-kicker {
  display: inline-block;
  margin: 0 0 22px;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.hero .eyebrow {
  padding: 9px 11px 7px;
  background: var(--cobalt);
  color: var(--lime);
}

.hero__title {
  max-width: 12ch;
  margin: 0;
  font-family: Impact, "Arial Black", "Segoe UI Black", sans-serif;
  font-size: clamp(4.4rem, 9vw, 9rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.005em;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.hero__title em {
  display: block;
  font-style: normal;
}

.hero__lead {
  max-width: 640px;
  margin: 38px 0 0;
  font-size: clamp(1.1rem, 1.8vw, 1.45rem);
  font-weight: 700;
  line-height: 1.36;
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  width: 100%;
  max-width: 100%;
  margin-top: 48px;
  border-top: 2px solid var(--cobalt);
  border-bottom: 2px solid var(--cobalt);
}

.meta-item {
  padding: 15px 20px;
  margin: 0;
  font-size: 0.84rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.meta-item span,
.meta-item strong {
  display: block;
}

.meta-item span {
  margin-bottom: 3px;
  font-size: 0.69rem;
  letter-spacing: 0.14em;
}

.meta-item:first-child {
  padding-left: 0;
}

.meta-item + .meta-item {
  border-left: 2px solid var(--cobalt);
}

/* Every section has the same horizontal rhythm; each keeps its own voice. */
.section {
  padding-block: clamp(72px, 9vw, 128px);
  border-bottom: 2px solid var(--line);
}

.section-heading {
  margin: 0 0 38px;
}

.section-heading h2 {
  max-width: 13ch;
  margin: 0;
  font-family: Impact, "Arial Black", "Segoe UI Black", sans-serif;
  font-size: clamp(2.7rem, 5.9vw, 5.8rem);
  font-weight: 400;
  line-height: 1.16;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.section-kicker {
  color: var(--cobalt);
}

.intro {
  background: var(--paper);
}

.intro .wrap {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  column-gap: clamp(40px, 8vw, 130px);
  row-gap: 20px;
  align-items: start;
}

.intro .section-heading {
  grid-column: 1;
  grid-row: 1 / span 2;
}

.intro .wrap > p {
  grid-column: 2;
  max-width: 64ch;
  margin: 0;
  font-size: clamp(1.08rem, 1.55vw, 1.3rem);
  line-height: 1.6;
}

.intro .wrap > p:nth-of-type(1) {
  font-weight: 700;
}


/* A képsor a poszter három szomszédos panelje. */
.intro .image-gallery {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px;
  margin-top: 3rem;
  border: 2px solid var(--cobalt);
  background: var(--cobalt);
}
.intro .image-gallery img {
  display: block;
  width: 100%;
  height: clamp(13rem, 24vw, 20rem);
  object-fit: cover;
}

.program {
  background: var(--cobalt);
  color: #fff;
}

.program .section-kicker {
  color: var(--lime);
}

.program .section-heading h2 {
  max-width: none;
}

.program-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--lime);
  border: 2px solid var(--lime);
}

.program-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 340px;
  padding: clamp(28px, 3.8vw, 52px);
  background: var(--cobalt);
}

.program-card:nth-child(2),
.program-card:nth-child(3) {
  background: var(--paper);
  color: var(--ink);
}

.card-number {
  display: inline-block;
  margin: 0 0 auto;
  font-family: Impact, "Arial Black", sans-serif;
  font-size: clamp(3.8rem, 5.5vw, 6.6rem);
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.program-card:nth-child(2) .card-number,
.program-card:nth-child(3) .card-number {
  color: var(--cobalt);
}

.program-card h3 {
  max-width: 20ch;
  margin: 28px 0 13px;
  font-family: Impact, "Arial Black", "Segoe UI Black", sans-serif;
  font-size: clamp(1.8rem, 2.6vw, 2.8rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0;
  text-transform: uppercase;
}

.program-card p {
  max-width: 43ch;
  margin: 0;
  font-size: 1rem;
  line-height: 1.55;
}

.question {
  background: var(--lime);
  color: var(--cobalt);
}

.question .section-kicker {
  color: var(--cobalt);
}

.question .section-heading h2 {
  max-width: none;
}

.question__quote {
  max-width: 1100px;
  margin: 0;
  font-family: Impact, "Arial Black", "Segoe UI Black", sans-serif;
  font-size: clamp(2.8rem, 5.4vw, 6rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0;
  text-transform: uppercase;
}

.question__quote::before {
  content: "↗";
  display: block;
  margin-bottom: 36px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: clamp(4rem, 9vw, 8rem);
  font-weight: 400;
  line-height: 0.75;
}

.question .wrap > p:last-child {
  max-width: 62ch;
  margin: 48px 0 0 auto;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.55;
}

.visit {
  background: var(--paper);
}

.visit .wrap {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  column-gap: clamp(40px, 8vw, 130px);
  row-gap: 18px;
  align-items: start;
}

.visit .section-heading {
  grid-column: 1;
  grid-row: 1 / span 2;
}

.visit-list {
  grid-column: 2;
  margin: 0;
  border-top: 2px solid var(--line);
}

.visit-item {
  display: grid;
  grid-template-columns: minmax(100px, 0.35fr) minmax(0, 0.65fr);
  gap: 20px;
  padding-block: 22px;
  border-bottom: 2px solid var(--line);
}

.visit-item dt {
  font-size: 0.73rem;
  font-weight: 900;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.visit-item dd {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
}

.button-link {
  grid-column: 2;
  justify-self: start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 54px;
  margin-top: 32px;
  padding: 13px 21px;
  background: var(--cobalt);
  color: #fff;
  border: 2px solid var(--cobalt);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  line-height: 1.35;
  text-decoration: none;
  text-transform: uppercase;
  transition: background-color 150ms ease, color 150ms ease;
}

.button-link:hover {
  background: var(--lime);
  color: var(--ink);
}

.button-link:focus-visible {
  outline-color: var(--cobalt);
}

.site-footer {
  padding-block: 34px;
  background: var(--ink);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px 28px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 850px) {
  .intro .wrap,
  .visit .wrap {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .intro .section-heading,
  .intro .wrap > p,
  .visit .section-heading,
  .visit-list,
  .button-link {
    grid-column: 1;
    grid-row: auto;
  }

  .hero__inner {
    min-height: 610px;
  }

  .hero::before {
    right: -560px;
  }
}

@media (max-width: 620px) {
  .wrap {
    width: min(calc(100% - 32px), var(--content));
  }

  .site-header .wrap {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
    padding-block: 17px;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 4px 16px;
  }

  .site-nav a {
    font-size: 0.7rem;
  }

  .hero__inner {
    min-height: auto;
    padding-block: 70px 88px;
  }

  .hero__title {
    font-size: clamp(3.7rem, 15vw, 6.2rem);
  }

  .hero__lead {
    margin-top: 28px;
  }

  .hero__meta {
    display: block;
    width: 100%;
    margin-top: 36px;
  }

  .meta-item {
    display: block;
    margin: 0;
    padding: 9px 0;
  }

  .meta-item + .meta-item {
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--cobalt);
  }

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

  .program-card {
    min-height: 270px;
  }

  .program-card:nth-child(3) {
    background: var(--cobalt);
    color: #fff;
  }

  .program-card:nth-child(3) .card-number {
    color: var(--lime);
  }

  .program-card:nth-child(4) {
    background: var(--paper);
    color: var(--ink);
  }

  .program-card:nth-child(4) .card-number {
    color: var(--cobalt);
  }

  .visit-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

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

  .button-link {
    transition: none;
  }
}

@media (max-width: 560px) {
  .intro .image-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2px;
    margin-top: 2rem;
  }
  .intro .image-gallery img { height: 10rem; }
  .intro .image-gallery img:first-child {
    grid-column: 1 / -1;
    height: 16rem;
  }
}

/* Finomítás — 2026. október 1. */
/* Képműhely: lime hátterű, festéknyomatra emlékeztető képpanelek.
   A multiply a képet a galéria hátterével keveri, a HTML változatlan.
   Rontsd el: a háttérszínt állítsd feketére, majd állítsd vissza. */
.hero__inner { min-height: 0; padding-block: 3.5rem 4rem; }
.hero__title { max-width: 17ch; font-size: clamp(3.5rem, 7.4vw, 7.2rem); line-height: 1.05; }
.hero__lead { margin-top: 1.8rem; }
.hero__meta { margin-top: 2rem; }
.intro .image-gallery { isolation: isolate; background: var(--lime); gap: .7rem; padding: .7rem; }
.intro .image-gallery img {
  filter: grayscale(1) contrast(1.12);
  mix-blend-mode: multiply;
  clip-path: polygon(0 0, 92% 0, 100% 12%, 100% 100%, 0 100%);
}
.intro .image-gallery img:nth-child(2) { filter: grayscale(.4) contrast(1.1); clip-path: polygon(8% 0, 100% 0, 100% 100%, 0 100%, 0 12%); }
.intro .image-gallery img:nth-child(3) { clip-path: polygon(0 0, 100% 0, 100% 88%, 92% 100%, 0 100%); }
@media (max-width: 620px) {
  .hero__inner { padding-block: 2.8rem 3rem; }
  .hero__title { font-size: clamp(3rem, 12vw, 4.6rem); }
  .hero__lead { margin-top: 1.5rem; }
  .hero__meta { margin-top: 1.6rem; }
}