:root{
  /* Theme */
  --bg:#141418; --ink:#f7f7fb; --muted:#c2c2d2; --brand:#a09990; --brand-2:#e71d36; --card:#1a1a22; --line:#2a2a38; --orange:#ff8000;
  --radius:18px; --radius-sm:12px; --shadow:0 10px 25px rgba(0,0,0,.35);
  /* Optional design tokens */
  --space-1:.25rem; --space-2:.5rem; --space-3:.75rem; --space-4:1rem; --space-5:1.25rem; --space-6:1.5rem;
  --fs-xs:.85rem; --fs-sm:.95rem; --fs-md:1rem; --fs-lg:1.2rem; --fs-xl:2rem; --fs-2xl:clamp(2rem,4.8vw,4rem);
}

/* Base & Resets */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,Inter,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background: linear-gradient(180deg,#1d1d26,var(--bg));
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1200px,100% - 2rem);margin-inline:auto}

/* Accessibility */
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}
:target{scroll-margin-top:80px}

/* Header */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(20,20,24,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
@supports not ((-webkit-backdrop-filter: blur(10px)) or (backdrop-filter: blur(10px))){
  header{background:#141418}
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:.8rem 0}
.brand{display:flex;gap:.7rem;align-items:center}
.logo{width:38px;height:38px;border-radius:12px;background:conic-gradient(from 210deg,var(--brand),var(--brand-2));box-shadow:inset 0 0 30px rgba(0,0,0,.4)}
.logo-img{width:auto;height:42px;border-radius:8px;display:block}
.brand h1{font-size:1.05rem;letter-spacing:.5px;margin:0}
.menu{display:flex;gap:1rem;align-items:center}
.menu a{padding:.55rem .9rem;border-radius:999px;border:1px solid transparent;opacity:.9;transition:opacity .2s,border-color .2s,background-color .2s,transform .2s}
.menu a:hover{opacity:1;border-color:var(--line)}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.1rem;border-radius:999px;border:1px solid var(--line);text-decoration:none;transition:transform .15s ease,box-shadow .15s ease}
.btn:active{transform:translateY(1px)}
.cta{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:700;border-color:transparent}
.hamb,.mobile{display:none !important}

/* Hero (gecombineerd & compact) */
.hero{position:relative;isolation:isolate;min-height:60vh;background:#2a2a34;background-size:cover;background-repeat:no-repeat;--focus-x:50%;--focus-y:50%;background-position:var(--focus-x) var(--focus-y)}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.35),rgba(0,0,0,.55));z-index:-1}
.hero-inner{padding:clamp(4rem,8vw,9rem) 0}
.hero h2{font-size:var(--fs-2xl);line-height:1.05;margin:0 0 1rem}
.hero p{color:var(--muted);font-size:clamp(1rem,2.2vw,1.15rem);max-width:60ch}
.hero .actions{margin-top:1.25rem;display:flex;gap:.8rem;flex-wrap:wrap}
@media(max-width:640px){.hero{min-height:65vh;--focus-y:35%}}
@media(min-width:641px){.hero{min-height:60vh}}
@media(min-width:1200px){.hero{min-height:70vh;--focus-y:45%}}

/* Sections */
section{padding:clamp(2.5rem,6vw,5rem) 0;border-top:1px solid var(--line);content-visibility:auto;contain-intrinsic-size:800px}
section h3{margin:0 0 1rem;font-size:clamp(1.4rem,3vw,2rem)}


/* Artists grid */
.artists-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem;margin-top:1.2rem}
.artists-grid figure{margin:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#12121a;text-align:center;position:relative;cursor:pointer}
.artists-grid img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;display:block;transition:transform .4s ease}
.artists-grid figure:hover img{transform:scale(1.05)}
.artists-grid figcaption{position:absolute;left:0;right:0;bottom:0;background:rgba(0,0,0,.55);color:#fff;font-size:1.05rem;padding:.6rem .8rem;transform:translateY(100%);transition:transform .3s ease}
.artists-grid figure:hover figcaption{transform:translateY(0)}
@media(max-width:1000px){.artists-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.artists-grid{grid-template-columns:repeat(2,1fr)}}

/* Timelines (programma) */
.timelines{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;margin-top:1.2rem}
.timeline{background:#12121a;border:1px solid var(--line);border-radius:12px;padding:1rem 1.2rem}
.timeline h4{margin:0 0 .8rem 0;font-size:1.1rem;display:flex;align-items:baseline;gap:.5rem}
.timeline h4 span{color:var(--muted);font-weight:400;font-size:.95rem}
.timeline ul{list-style:none;margin:0;padding:0}
.timeline li{padding:.55rem .65rem;border-radius:10px;display:flex;gap:.7rem;align-items:baseline}
.timeline li + li{margin-top:.35rem;border-top:1px dashed var(--line);padding-top:.7rem}
.timeline li strong{color:var(--brand);width:64px;flex:0 0 64px}
.timeline.artiesten li strong{color:var(--orange)}
.timeline.carbid li strong{color:var(--brand-2)}
@media (max-width:900px){.timelines{grid-template-columns:1fr}}

/* Year grid (zelfde stijl als artists-grid, 2 kolommen op mobiel) */
.year-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem;margin-top:1.2rem}
.year-grid figure{margin:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#12121a;text-align:center;position:relative;cursor:pointer}
.year-grid img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;display:block;transition:transform .4s ease}
.year-grid figure:hover img{transform:scale(1.05)}
.year-grid figcaption{position:absolute;left:0;right:0;bottom:0;background:rgba(0,0,0,.55);color:#fff;font-size:1.05rem;padding:.6rem .8rem;transform:translateY(100%);transition:transform .3s ease}
.year-grid figure:hover figcaption{transform:translateY(0)}
@media(max-width:1000px){.year-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.year-grid{grid-template-columns:repeat(2,1fr)}}

/* Sponsors (grid) */
.sponsors{display:grid;grid-template-columns:repeat(6,1fr);gap:1rem}
.s-logo{border-radius:14px;border:1px solid var(--line);background:#191922;display:grid;place-items:center;aspect-ratio:3/2;font-weight:700;color:#dcdcf0}
.s-cta{margin-top:1rem;padding:1rem;border:1px dashed var(--line);border-radius:var(--radius-sm);color:var(--muted)}

/* ===== Seamless Sponsor Scroller (single source of truth) ===== */
.sponsor-scroller{
  --gap:2rem;
  --speed:40s;
  position:relative;
  overflow:hidden;
  width:100%;
  padding-block:1rem;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#15151c;
  -webkit-mask-image:linear-gradient(to right,transparent,black 10%,black 90%,transparent);
  mask-image:linear-gradient(to right,transparent,black 10%,black 90%,transparent);
}
.sponsor-track{
  display:flex;align-items:center;gap:var(--gap);
  width:max-content;
  animation:sponsor-scroll var(--speed) linear infinite;
}
@keyframes sponsor-scroll{to{transform:translateX(-50%)}}
.sponsor-scroller:hover .sponsor-track,
.sponsor-scroller:focus-within .sponsor-track{animation-play-state:paused}
@media (prefers-reduced-motion:reduce){.sponsor-track{animation:none}}
/* Logo sizes (per verzoek: height 140px) */
.sponsor-logo{height:140px;width:auto;filter:grayscale(.05) brightness(.95);opacity:.95;padding:.6rem;background:#1a1a22;border:1px solid var(--line);border-radius:14px}
.sponsor-logo.small{height:90px}
/* HTML-tip: dupliceer de logo-reeks in de markup voor een perfecte loop */


/* Location */
.location{display:grid;grid-template-columns:1.2fr .8fr;gap:1rem}
.panel{padding:1rem;border:1px solid var(--line);border-radius:var(--radius);background:#191922}
iframe{display:block;width:100%;height:360px;border:0;border-radius:12px;background:#111}
@media (max-width:900px){
  .location{grid-template-columns:1fr}
  iframe{height:300px}
}

/* Footer */
footer{padding:2rem 0;color:var(--muted);border-top:1px solid var(--line)}
.socials{display:flex;gap:.8rem}
.icon{width:22px;height:22px;display:inline-block}
.icon svg{width:100%;height:100%;fill:currentColor;transition:fill .3s}
.icon:hover svg{fill:var(--brand-2)}

/* Section title + lead */
.section-title{position:relative;text-align:center;font-size:2rem;font-weight:bold;margin:2rem 0}
.lead{color:var(--muted);position:relative;text-align:center;font-weight:bold;margin:2rem 0}
.section-title::before{content:"";display:inline-block;width:30px;height:3px;background-color:red;margin-right:10px;vertical-align:middle}

/* Lightbox */
#lightbox{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.85);z-index:9999}
#lightbox.is-open{display:flex}
#lightbox .lightbox-inner{position:relative;max-width:92vw;max-height:92vh}
#lightbox-img{max-width:92vw;max-height:92vh;display:block;border-radius:12px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
#lightbox-close,#lightbox-prev,#lightbox-next{position:absolute;top:50%;transform:translateY(-50%);border:0;background:rgba(0,0,0,.4);color:#fff;font-size:2rem;line-height:1;width:56px;height:56px;border-radius:999px;cursor:pointer}
#lightbox-close{top:0;right:0;transform:none;font-size:2rem;margin:8px}
#lightbox-prev{left:-64px}
#lightbox-next{right:-64px}
#lightbox button:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}
@media (max-width:640px){
  #lightbox-prev{left:8px;top:auto;bottom:12px;transform:none}
  #lightbox-next{right:8px;top:auto;bottom:12px;transform:none}
}

/* =========================================
   Optie 2: Donkere achtergrond + accent per sectie
   ========================================= */
body {
  background: #000;
  color: #eee;
}

#artiesten { background: #181818; }  /* diep blauwgrijs */
#programma { background: #181818; }  /* donkerrood tint */
#fotos     { background: #181818; }  /* neutraal grijs */
#sponsors  { background: #181818; }  /* diepblauw */
#locatie   { background: #181818; }  /* donkergrijs */
#contact   { background: #181818; }  /* neutraal zwart */
#aftermovie { background: #181818; }  /* donkergrijs */

section {
  padding: 2rem;
  border-radius: 12px;
  margin-bottom: 2rem;
  box-shadow: 0 0 15px rgba(255,255,255,0.05);
}

/* =========================================
   Boxbreedte responsief beperken (centrale kolom)
   ========================================= */
section {
  max-width: 1100px;
  margin: 2rem auto; /* centreren en verticale ruimte */
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(255,255,255,0.05);
}

/* Extra marge op ultrabrede schermen */
@media (min-width: 1600px) {
  section {
    max-width: 1300px;
  }
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 verhouding */
  height: 0;
  overflow: hidden;
  border-radius: 12px;
  max-width: 940px;
  margin: 0 auto;
  box-shadow: 0 0 15px rgba(255,255,255,0.05);
}
.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}


/* Mobile smoothness tweaks (prevent flicker) */
@media(max-width:800px){
  header{
    backdrop-filter:none;
    -webkit-backdrop-filter:none;
    background:rgba(20,20,24,.98);
  }
  section{
    content-visibility:visible;
    contain-intrinsic-size:auto;
    box-shadow:none; /* optioneel, minder repaints */
  }
  .sponsor-scroller{
    -webkit-mask-image:none;
    mask-image:none;
  }
}
/* Stabilize scroller animation on all sizes */
.sponsor-track{will-change:transform;transform:translateZ(0)}