:root {
  --max: 1120px;
  --gap: 1.25rem;
  --mea-blue: #00549F;
  --mea-blue-75: #407FB7;
  --mea-blue-50: #8EBAE5;
  --mea-blue-25: #C7DDF2;
  --mea-blue-10: #E8F1FA;
  --mea-yellow: #FFED00;
  --mea-orange: #F6A800;
  --mea-orange-75: #FABE50;
  --mea-orange-50: #FDD48F;
  --mea-turquoise: #0098A1;
  --mea-petrol: #006165;
  --mea-gray-75: #404143;
  --mea-gray-50: #9C9E9F;
  --mea-gray-25: #CFD1D2;
  --mea-gray-10: #ECEDED;
  --white: #fff;
  --shadow: 0 1.3rem 3rem rgba(0, 84, 159, .14);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--mea-gray-75); line-height: 1.58; background: white; }
a { color: var(--mea-blue); text-decoration-thickness: .08em; text-underline-offset: .14em; }
a:hover { color: var(--mea-petrol); }
.skip-link { position: absolute; left: -999px; top: 0; background: white; padding: .75rem; z-index: 20; }
.skip-link:focus { left: 1rem; }
.site-header { border-bottom: 1px solid var(--mea-blue-25); background: rgba(255,255,255,.96); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(10px); }
.header-inner { max-width: var(--max); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .72rem 1rem; }
.brand { flex: 0 0 auto; text-decoration: none; font-weight: 900; letter-spacing: -.04em; font-size: 1.35rem; color: var(--mea-blue); }
.brand-year, footer strong span, .title-year { color: var(--mea-orange); }
.nav { display: flex; flex-wrap: wrap; gap: .75rem 1rem; align-items: center; font-size: .95rem; }
.nav a { text-decoration: none; color: var(--mea-blue); font-weight: 700; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a.active { border-bottom-color: var(--mea-orange); color: var(--mea-blue); }
.nav-toggle { display: none; border: 2px solid var(--mea-blue); background: white; color: var(--mea-blue); border-radius: .35rem; padding: .45rem .65rem; font-weight: 800; }
main { max-width: var(--max); margin: 0 auto; padding: 0 1rem 5rem; position: relative; z-index: 1; }
.hero { max-width: none; margin: 0 calc(50% - 50vw) 3.4rem; padding: 0; border-bottom: 4px solid var(--mea-orange); background: radial-gradient(circle at 75% 25%, var(--mea-blue-25), transparent 28rem), linear-gradient(135deg, white, var(--mea-blue-10)); }
.hero-content { max-width: none; margin: 0; min-height: clamp(28rem, 58vw, 44rem); padding: clamp(3rem, 8vw, 6rem) max(2rem, calc((100vw - var(--max))/2 + 1rem)); display: flex; align-items: center; background-color: var(--mea-blue-10); background-image: linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.96) 22%, rgba(232,241,250,.92) 42%, rgba(232,241,250,.54) 58%, rgba(232,241,250,.12) 72%, rgba(232,241,250,0) 83%), url('../img/eurogress-aachen-hero.jpg'); background-position: left top, right center; background-size: cover, auto 100%; background-repeat: no-repeat; border-radius: 0; }
.hero-copy { max-width: 690px; }
.page-hero { margin: 0 calc(50% - 50vw) 3rem; padding: clamp(3rem, 6vw, 5.25rem) calc(50vw - min(var(--max), calc(100vw - 2rem))/2); background: radial-gradient(circle at 82% 10%, var(--mea-blue-25), transparent 28rem), linear-gradient(135deg, white, var(--mea-blue-10)); border-bottom: 4px solid var(--mea-orange); }
section { margin: 3.2rem 0; scroll-margin-top: 5.5rem; }
.eyebrow { color: var(--mea-blue); text-transform: uppercase; letter-spacing: .08em; font-size: .86rem; font-weight: 800; margin: 0 0 .6rem; }
h1 { color: var(--mea-blue); font-size: clamp(3.2rem, 10vw, 7.5rem); line-height: .9; margin: .2rem 0 1rem; letter-spacing: -.055em; }
.page-hero h1 { font-size: clamp(2.8rem, 6vw, 5.2rem); }
.title-year { color: var(--mea-orange); text-shadow: 0 .02em 0 rgba(246,168,0,.22); }
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .title-year { background: linear-gradient(180deg, var(--mea-yellow) 0%, var(--mea-orange) 76%); -webkit-background-clip: text; background-clip: text; color: transparent; }
}
h2 { color: var(--mea-blue); font-size: clamp(1.65rem, 3vw, 2.35rem); margin: 0 0 1rem; line-height: 1.13; }
h3 { color: var(--mea-blue); margin: 0 0 .55rem; line-height: 1.18; }
p { margin: 0 0 1rem; }
.lead { max-width: 850px; font-size: clamp(1.2rem, 2.4vw, 1.85rem); color: var(--mea-blue); font-weight: 720; }
.sublead { color: var(--mea-gray-75); font-size: 1.13rem; font-weight: 600; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.6rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 2.75rem; padding: .75rem 1.05rem; border: 2px solid var(--mea-blue); border-radius: .38rem; text-decoration: none; background: var(--mea-blue); color: white; font-weight: 800; box-shadow: 0 .35rem .7rem rgba(0,84,159,.12); }
.button:hover { background: var(--mea-petrol); border-color: var(--mea-petrol); color: white; }
.button.secondary { background: var(--mea-orange); color: #111; border-color: var(--mea-orange); }
.button.secondary:hover { background: var(--mea-orange-75); border-color: var(--mea-orange-75); color: #111; }
.button.ghost { background: white; color: var(--mea-blue); }
.button.disabled { opacity: .68; cursor: not-allowed; background: var(--mea-gray-25); border-color: var(--mea-gray-25); color: var(--mea-gray-75); box-shadow: none; }
.panel { background: var(--mea-blue-10); border: 1px solid var(--mea-blue-25); border-radius: .8rem; padding: 1.4rem; box-shadow: 0 .4rem 1.2rem rgba(0,84,159,.06); }
.split { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr); gap: var(--gap); align-items: center; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: var(--gap); }
.facts article { background: white; border-left: .35rem solid var(--mea-orange); padding: 1rem; border-radius: .4rem; }
.facts strong { display: block; color: var(--mea-blue); }
.cards, .grid.two { display: grid; grid-template-columns: repeat(auto-fit, minmax(245px, 1fr)); gap: var(--gap); }
.cards article, .grid article { border: 1px solid var(--mea-blue-25); border-radius: .72rem; padding: 1.1rem; background: white; box-shadow: 0 .35rem .9rem rgba(0,84,159,.05); }
.cards.compact article { background: var(--mea-blue-10); box-shadow: none; }
.highlight-grid { align-items: start; }
.callout { border-left: .4rem solid var(--mea-orange); background: linear-gradient(90deg, var(--mea-orange-50), white); border-radius: .7rem; padding: 1.1rem; }
.copy-box { background: var(--mea-blue-10); border: 1px solid var(--mea-blue-25); padding: 1rem; border-radius: .55rem; }
ul { padding-left: 1.2rem; }
.check-list li { margin: .35rem 0; }
.table-wrap { width: 100%; overflow-x: auto; border: 1px solid var(--mea-gray-25); border-radius: .7rem; background: white; }
table { width: 100%; border-collapse: collapse; background: white; min-width: 720px; }
th, td { text-align: left; border-bottom: 1px solid var(--mea-gray-25); padding: .78rem; vertical-align: top; }
th { color: var(--mea-blue); background: var(--mea-blue-10); font-weight: 800; }
tr:last-child td { border-bottom: none; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.section-head h2 { margin-bottom: 0; }
.search-label { font-weight: 700; color: var(--mea-blue); }
.search-label input { margin-left: .45rem; padding: .55rem .65rem; border: 1px solid var(--mea-blue-25); border-radius: .35rem; min-width: 240px; }
.faq-list details { border: 1px solid var(--mea-blue-25); border-radius: .55rem; padding: .85rem 1rem; margin-bottom: .75rem; background: white; }
.faq-list summary { color: var(--mea-blue); cursor: pointer; font-weight: 800; }
.small { font-size: .9rem; color: var(--mea-gray-75); }
.venue-thumb { width: 100%; border-radius: .65rem; box-shadow: var(--shadow); }
.contact-cards p { margin-bottom: .35rem; }
footer { margin-top: 2rem; background: var(--mea-blue); color: white; padding: 2rem 1rem; text-align: center; }
.footer-inner { max-width: var(--max); margin: 0 auto; }
footer a { color: white; }
footer .small { color: rgba(255,255,255,.82); }
@media (max-width: 860px) {
  .header-inner { align-items: flex-start; }
  .nav-toggle { display: inline-flex; }
  .nav { display: none; width: 100%; padding-top: .75rem; }
  .nav.open { display: flex; }
  .header-inner { flex-wrap: wrap; }
  .hero { padding: 0; }
  .hero-content { min-height: 32rem; padding-inline: 1rem; background-image: linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.94) 55%, rgba(232,241,250,.45) 100%), url('../img/eurogress-aachen-hero.jpg'); background-position: left top, right center; background-size: cover, auto 100%; }
  .split { grid-template-columns: 1fr; }
  .section-head { align-items: stretch; flex-direction: column; }
  .search-label input { width: 100%; min-width: 0; margin-left: 0; margin-top: .25rem; }
}
@media (max-width: 560px) {
  main { padding-inline: .85rem; }
  .hero-content { padding-inline: .85rem; background-image: linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.94) 72%, rgba(232,241,250,.55) 100%), url('../img/eurogress-aachen-hero.jpg'); }
  .actions { flex-direction: column; align-items: stretch; }
  table { min-width: 620px; }
}


/* MEA 2027 refinement: corrected hero fade, horizontal overflow, and footer skyline */
html, body { overflow-x: hidden; }
@supports (overflow: clip) {
  html, body { overflow-x: clip; }
}
.hero-content {
  position: relative;
  overflow: hidden;
  background-color: var(--mea-blue-10);
  background-image: none;
}
.hero-content::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 28%;
  z-index: 0;
  background-image: url('../img/eurogress-aachen-hero.jpg');
  background-position: right center;
  background-size: cover;
  background-repeat: no-repeat;
}
.hero-content::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(90deg,
    rgba(232,241,250,.98) 0%,
    rgba(232,241,250,.98) 30%,
    rgba(232,241,250,.96) 34%,
    rgba(232,241,250,.78) 52%,
    rgba(232,241,250,.32) 68%,
    rgba(232,241,250,0) 84%);
}
.hero-copy { position: relative; z-index: 2; }
.city-skyline {
  width: min(860px, calc(100vw - 2rem));
  margin: -4.2rem auto 0;
  padding: 0;
  position: relative;
  z-index: 0;
  background: transparent;
  pointer-events: none;
}
.city-skyline img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 auto;
}
.city-skyline + footer { margin-top: 0; }
@media (max-width: 860px) {
  .hero-content { background-image: none; }
  .hero-content::after { left: 14%; }
  .hero-content::before {
    background: linear-gradient(90deg,
      rgba(232,241,250,.98) 0%,
      rgba(232,241,250,.96) 48%,
      rgba(232,241,250,.72) 72%,
      rgba(232,241,250,.28) 100%);
  }
}
@media (max-width: 560px) {
  .hero-content { background-image: none; }
  .hero-content::after { left: 0; opacity: .72; }
  .hero-content::before {
    background: linear-gradient(90deg,
      rgba(232,241,250,.98) 0%,
      rgba(232,241,250,.96) 70%,
      rgba(232,241,250,.70) 100%);
  }
  .city-skyline {
    width: calc(100vw - 1.7rem);
    max-width: 560px;
    margin-top: -2rem;
  }
}

/* MEA 2027 PHP refactor: RWTH-based light/dark theme system */
:root {
  color-scheme: light;
  --page-bg: #FFFFFF;
  --surface: #FFFFFF;
  --surface-soft: var(--mea-blue-10);
  --surface-strong: var(--mea-blue-25);
  --text-color: var(--mea-gray-75);
  --muted-color: var(--mea-gray-75);
  --heading-color: var(--mea-blue);
  --link-color: var(--mea-blue);
  --link-hover-color: var(--mea-petrol);
  --border-color: var(--mea-blue-25);
  --header-bg: rgba(255, 255, 255, .96);
  --hero-bg: var(--mea-blue-10);
  --hero-image: url('../img/eurogress-aachen-hero.jpg');
  --hero-fade-a: rgba(232,241,250,.98);
  --hero-fade-b: rgba(232,241,250,.96);
  --hero-fade-c: rgba(232,241,250,.78);
  --hero-fade-d: rgba(232,241,250,.32);
  --hero-fade-clear: rgba(232,241,250,0);
  --footer-bg: var(--mea-blue);
  --footer-text: #FFFFFF;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page-bg: var(--mea-gray-75);
    --surface: var(--mea-blue);
    --surface-soft: var(--mea-petrol);
    --surface-strong: var(--mea-blue-75);
    --text-color: var(--mea-blue-10);
    --muted-color: var(--mea-blue-25);
    --heading-color: var(--mea-blue-10);
    --link-color: var(--mea-blue-25);
    --link-hover-color: var(--mea-blue-50);
    --border-color: var(--mea-blue-75);
    --header-bg: rgba(64, 65, 67, .96);
    --hero-bg: var(--mea-blue);
    --hero-image: url('../img/eurogress-aachen-hero-night.jpg');
    --hero-fade-a: rgba(0,84,159,.98);
    --hero-fade-b: rgba(0,84,159,.96);
    --hero-fade-c: rgba(0,84,159,.78);
    --hero-fade-d: rgba(0,84,159,.32);
    --hero-fade-clear: rgba(0,84,159,0);
    --footer-bg: var(--mea-blue);
    --footer-text: #FFFFFF;
    --shadow: 0 1.3rem 3rem rgba(0, 0, 0, .26);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page-bg: var(--mea-gray-75);
  --surface: var(--mea-blue);
  --surface-soft: var(--mea-petrol);
  --surface-strong: var(--mea-blue-75);
  --text-color: var(--mea-blue-10);
  --muted-color: var(--mea-blue-25);
  --heading-color: var(--mea-blue-10);
  --link-color: var(--mea-blue-25);
  --link-hover-color: var(--mea-blue-50);
  --border-color: var(--mea-blue-75);
  --header-bg: rgba(64, 65, 67, .96);
  --hero-bg: var(--mea-blue);
  --hero-image: url('../img/eurogress-aachen-hero-night.jpg');
  --hero-fade-a: rgba(0,84,159,.98);
  --hero-fade-b: rgba(0,84,159,.96);
  --hero-fade-c: rgba(0,84,159,.78);
  --hero-fade-d: rgba(0,84,159,.32);
  --hero-fade-clear: rgba(0,84,159,0);
  --footer-bg: var(--mea-blue);
  --footer-text: #FFFFFF;
  --shadow: 0 1.3rem 3rem rgba(0, 0, 0, .26);
}

body { color: var(--text-color); background: var(--page-bg); }
a { color: var(--link-color); }
a:hover { color: var(--link-hover-color); }
.skip-link { background: var(--surface); color: var(--link-color); }
.site-header { border-bottom-color: var(--border-color); background: var(--header-bg); }
.brand, .nav a, .nav a:hover, .nav a.active { color: var(--heading-color); }
.nav a:hover, .nav a.active { border-bottom-color: var(--mea-orange); }
.nav-toggle, .theme-toggle { border: 2px solid var(--border-color); background: var(--surface); color: var(--heading-color); border-radius: .35rem; padding: .45rem .65rem; font-weight: 800; }
.theme-toggle { min-width: 4.6rem; }
.hero { background: radial-gradient(circle at 75% 25%, var(--surface-strong), transparent 28rem), linear-gradient(135deg, var(--page-bg), var(--hero-bg)); }
.hero-content { background-color: var(--hero-bg); }
.hero-content::after { background-image: var(--hero-image); }
.hero-content::before {
  background: linear-gradient(90deg,
    var(--hero-fade-a) 0%,
    var(--hero-fade-a) 30%,
    var(--hero-fade-b) 34%,
    var(--hero-fade-c) 52%,
    var(--hero-fade-d) 68%,
    var(--hero-fade-clear) 84%);
}
.page-hero { background: radial-gradient(circle at 82% 10%, var(--surface-strong), transparent 28rem), linear-gradient(135deg, var(--page-bg), var(--hero-bg)); }
h1, h2, h3, .lead, .eyebrow, .facts strong, .faq-list summary, .search-label { color: var(--heading-color); }
.sublead, .small { color: var(--muted-color); }
.panel, .cards.compact article, .copy-box, th { background: var(--surface-soft); border-color: var(--border-color); }
.facts article, .cards article, .grid article, .faq-list details, .table-wrap, table { background: var(--surface); border-color: var(--border-color); }
th, td { border-bottom-color: var(--border-color); }
.callout { background: linear-gradient(90deg, var(--mea-orange-50), var(--surface)); color: var(--text-color); }
.button { background: var(--mea-blue); border-color: var(--mea-blue); color: #FFFFFF; }
:root[data-theme="dark"] .button { background: var(--mea-blue-75); border-color: var(--mea-blue-75); color: #FFFFFF; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .button { background: var(--mea-blue-75); border-color: var(--mea-blue-75); color: #FFFFFF; }
}
.button:hover { background: var(--mea-petrol); border-color: var(--mea-petrol); color: #FFFFFF; }
.button.ghost { background: var(--surface); color: var(--link-color); }
.button.secondary { background: var(--mea-orange); border-color: var(--mea-orange); color: #111111; }
.button.secondary:hover { background: var(--mea-orange-75); border-color: var(--mea-orange-75); color: #111111; }
.button.disabled { background: var(--mea-gray-25); border-color: var(--mea-gray-25); color: var(--mea-gray-75); }
footer { background: var(--footer-bg); color: var(--footer-text); }
footer a, footer .small { color: rgba(255,255,255,.86); }
.city-skyline { background: transparent; }

@media (max-width: 860px) {
  .hero-content::before {
    background: linear-gradient(90deg,
      var(--hero-fade-a) 0%,
      var(--hero-fade-b) 48%,
      var(--hero-fade-c) 72%,
      var(--hero-fade-d) 100%);
  }
}
@media (max-width: 560px) {
  .hero-content::before {
    background: linear-gradient(90deg,
      var(--hero-fade-a) 0%,
      var(--hero-fade-b) 70%,
      var(--hero-fade-c) 100%);
  }
}