/* EPEX 2026 — lightweight, modern CSS (no framework) */

:root{
  --bg: #0f1115;
  --surface: #151a22;
  --surface-2: #10141b;
  --text: #eef2ff;
  --muted: #b7c0d9;
  --muted-2:#8f9ab8;
  --border: rgba(255,255,255,.12);

  /* Accent inspired by the legacy palette (purple/blue) */
  --accent: #7a28ff;
  --accent-2:#00a1ff;

  --max: 1120px;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0,0,0,.45);

  --step--1: clamp(0.92rem, 0.85rem + 0.3vw, 1.0rem);
  --step-0: clamp(1.00rem, 0.92rem + 0.5vw, 1.12rem);
  --step-1: clamp(1.20rem, 1.05rem + 0.9vw, 1.50rem);
  --step-2: clamp(1.55rem, 1.25rem + 1.4vw, 2.10rem);
  --step-3: clamp(2.05rem, 1.55rem + 2.2vw, 3.10rem);
}

*{ box-sizing:border-box; }
html{ color-scheme: dark; scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  font-size: var(--step-0);
  line-height: 1.6;
  background: radial-gradient(1200px 600px at 30% -10%, rgba(122,40,255,.25), transparent 60%),
              radial-gradient(900px 500px at 80% 0%, rgba(0,161,255,.18), transparent 55%),
              var(--bg);
  color: var(--text);
}

img{ max-width:100%; height:auto; display:block; }
a{ color:inherit; text-decoration-color: rgba(255,255,255,.35); text-underline-offset: .22em; }
a:hover{ text-decoration-color: rgba(255,255,255,.8); }
p{ margin: 0 0 1rem; color: var(--muted); }
strong{ color: var(--text); }

.container{ max-width: var(--max); margin-inline:auto; padding-inline: clamp(1rem, 3vw, 1.5rem); }
.flow > * + *{ margin-top: 1rem; }

.skip-link{
  position:absolute; left:-999px; top:0;
  background:#fff; color:#000; padding:.5rem .75rem; border-radius: 12px;
}
.skip-link:focus{ left: 1rem; top: 1rem; z-index: 9999; }

.site-header{
  position: sticky;
  top: 0;
  z-index: 500;
  backdrop-filter: blur(10px);
  background: rgba(15,17,21,.7);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-block:.85rem;
  gap: 1rem;
}
.brand{
  display:flex; align-items:center; gap:.75rem;
  text-decoration:none;
}
.brand-mark{
  width: 38px; height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 30px rgba(122,40,255,.25);
}
.brand-text{
  display:flex; flex-direction:column; line-height:1.1;
}
.brand-text strong{ font-size: 1.05rem; letter-spacing: .02em; }
.brand-text span{ font-size: .9rem; color: var(--muted-2); }

.primary-nav{
  display:flex; align-items:center; gap:.8rem;
}
.primary-nav a{
  text-decoration:none;
  padding:.45rem .6rem;
  border-radius: 12px;
  color: var(--muted);
}
.primary-nav a[aria-current="page"]{
  color: var(--text);
  background: rgba(255,255,255,.06);
}
.primary-nav a:hover{ color: var(--text); background: rgba(255,255,255,.06); }

.cta{
  display:inline-flex; align-items:center; justify-content:center;
  gap:.5rem;
  padding:.55rem .85rem;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: linear-gradient(135deg, rgba(122,40,255,.95), rgba(0,161,255,.85));
  color:#fff;
  text-decoration:none;
  font-weight: 650;
  box-shadow: 0 16px 44px rgba(0,0,0,.35);
}
.cta:focus-visible, a:focus-visible, button:focus-visible, summary:focus-visible{
  outline: 3px solid rgba(0,161,255,.55);
  outline-offset: 2px;
}

.nav-disclosure{
  display:none;
}

@media (max-width: 820px){
  .primary-nav{ display:none; }
  .nav-disclosure{ display:block; }
  .nav-disclosure summary{
    list-style:none;
    cursor:pointer;
    padding:.5rem .75rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    color: var(--text);
    background: rgba(255,255,255,.05);
  }
  .nav-disclosure summary::-webkit-details-marker{ display:none; }
  .nav-panel{
    margin-top:.75rem;
    padding:.75rem;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: rgba(10,12,18,.9);
  }
  .nav-panel a{
    display:block;
    padding:.6rem .7rem;
    border-radius: 12px;
    text-decoration:none;
    color: var(--muted);
  }
  .nav-panel a:hover{ background: rgba(255,255,255,.06); color: var(--text); }
  .nav-panel .cta{ margin-top:.5rem; width:100%; }
}

.subnav{
  border-bottom: 1px solid var(--border);
  background: rgba(10,12,18,.35);
}
.subnav-inner{
  display:flex;
  gap:.5rem;
  padding-block:.55rem;
  overflow-x:auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
}
.subnav a{
  scroll-snap-align:start;
  flex: 0 0 auto;
  text-decoration:none;
  padding:.4rem .65rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.10);
  color: var(--muted);
  background: rgba(255,255,255,.03);
  white-space:nowrap;
}
.subnav a:hover{ color: var(--text); border-color: rgba(255,255,255,.18); }

.hero{
  position: relative;
  isolation: isolate;
  padding: clamp(3.2rem, 6vw, 5rem) 0 clamp(2rem, 4vw, 3rem);
}
.hero-media{
  position:absolute; inset:0;
  z-index:-2;
}
.hero-media img{
  width:100%; height:100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.05);
}
.hero-overlay{
  position:absolute; inset:0;
  z-index:-1;
  background:
    linear-gradient(90deg, rgba(15,17,21,.92) 0%, rgba(15,17,21,.70) 45%, rgba(15,17,21,.92) 100%),
    radial-gradient(900px 500px at 70% 0%, rgba(0,161,255,.20), transparent 60%),
    radial-gradient(1100px 600px at 30% 10%, rgba(122,40,255,.25), transparent 60%);
}
.hero h1{
  font-size: var(--step-3);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 .75rem;
}
.hero .lede{
  font-size: var(--step-1);
  color: var(--muted);
  max-width: 62ch;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:.6rem;
  margin: 1.2rem 0 1.5rem;
}
.chip{
  display:inline-flex; align-items:center;
  padding:.25rem .6rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-size: var(--step--1);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:.75rem;
  align-items:center;
}
.button{
  display:inline-flex; align-items:center; justify-content:center;
  padding:.6rem .9rem;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  color: var(--text);
  text-decoration:none;
  font-weight: 650;
}
.button:hover{ background: rgba(255,255,255,.07); }
.button.secondary{ background: transparent; }

/* Gold / metallic glass button variant (uses existing .button base) */
.button.button-gold{
  position: relative;
  overflow: hidden;
  color: #1f1700;
  border: 1px solid rgba(255, 220, 120, 0.55);

  /* metallic + glassy layered look */
  background:
    linear-gradient(180deg, rgba(255,255,255,.35) 0%, rgba(255,255,255,.08) 38%, rgba(255,255,255,0) 39%),
    linear-gradient(160deg, #fff0a6 0%, #ffd75a 18%, #e9b72c 42%, #c98a10 62%, #f6cf52 82%, #fff0b3 100%);

  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.55),
    inset 0 -1px 0 rgba(90,55,0,.22),
    inset 0 0 0 1px rgba(255,255,255,.08),
    0 10px 24px rgba(0,0,0,.28),
    0 4px 10px rgba(180,120,10,.18);

  font-weight: 750;
  letter-spacing: .01em;
  text-decoration: none;
  text-shadow: 0 1px 0 rgba(255,255,255,.22);
}

/* glossy highlight sweep */
.button.button-gold::before{
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 15% 0%, rgba(255,255,255,.55), transparent 45%),
    linear-gradient(115deg, transparent 30%, rgba(255,255,255,.22) 45%, transparent 60%);
  opacity: .85;
}

/* subtle lower metal depth */
.button.button-gold::after{
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 4px;
  height: 38%;
  border-radius: 999px;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(120,70,0,0), rgba(120,70,0,.18));
  filter: blur(3px);
}

.button.button-gold:hover{
  color: #1b1400;
  border-color: rgba(255, 232, 160, 0.8);
  background:
    linear-gradient(180deg, rgba(255,255,255,.42) 0%, rgba(255,255,255,.10) 38%, rgba(255,255,255,0) 39%),
    linear-gradient(160deg, #fff3b8 0%, #ffe073 20%, #efbf39 42%, #d39414 62%, #ffd45b 82%, #fff2bf 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.62),
    inset 0 -1px 0 rgba(90,55,0,.24),
    inset 0 0 0 1px rgba(255,255,255,.10),
    0 14px 30px rgba(0,0,0,.34),
    0 6px 14px rgba(200,140,20,.24);
}

.button.button-gold:active{
  transform: translateY(1px);
  box-shadow:
    inset 0 2px 4px rgba(90,55,0,.18),
    inset 0 1px 0 rgba(255,255,255,.35),
    0 6px 16px rgba(0,0,0,.25);
}

/* Optional: better contrast for disabled state if you ever use aria-disabled */
.button.button-gold[aria-disabled="true"]{
  opacity: .6;
  pointer-events: none;
}

.section{
  padding: clamp(2.2rem, 5vw, 3.2rem) 0;
}
.section h2{
  font-size: var(--step-2);
  margin: 0 0 .8rem;
  letter-spacing: -0.02em;
}
.section h3{
  font-size: var(--step-1);
  margin: 0 0 .45rem;
}
.kicker{
  color: var(--muted-2);
  font-weight: 650;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .8rem;
  margin: 0 0 .35rem;
}
.grid{
  display:grid;
  gap: 1rem;
}
.grid.one{ grid-template-columns: 1fr; }
.grid.two{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three{ grid-template-columns: repeat(3, minmax(0, 1fr)); }

.grid + .grid{
  margin-top: 1rem;
}

@media (max-width: 900px){
  .grid.two, .grid.three{ grid-template-columns: 1fr; }
}

.media-banner{
  --media-h: 250px; /* default height; override inline or with a class */
  width: 100%;
  height: var(--media-h);
  margin: 1rem 0 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: rgba(255,255,255,.04);
}

.media-banner img{
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}

/* Makes the banner span the full viewport width (useful when inside .container) */
.media-banner--bleed{
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

/* Optional helper heights you can reuse anywhere */
.media-h-180{ --media-h: 180px; }
.media-h-250{ --media-h: 250px; }
.media-h-320{ --media-h: 320px; }
.media-h-420{ --media-h: 420px; }

/* Slightly reduce corner radius on very small screens if desired */
@media (max-width: 640px){
  .media-banner{
    border-radius: 14px;
  }
}

.card{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  padding: 1.05rem;
  box-shadow: var(--shadow);
}
.card p{ margin-bottom: 0; }

.card li + li {margin-top: 0.25rem;}

.figure-card{
  overflow:hidden;
  padding:0;
}
.figure-card .media{
  aspect-ratio: 16/9;
  background: rgba(255,255,255,.04);
  border-bottom: 1px solid var(--border);
}
.figure-card .media img{ width:100%; height:100%; object-fit: cover; }
.figure-card .content{
  padding: 1rem 1.05rem 1.1rem;
}

/* Sponsor cards */
.sponsor-card{
  text-align: center;
}

.sponsor-card h3{
  margin-bottom: 0.75rem;
}

/* Fixed logo area so logos align nicely even if source files vary */
.sponsor-logo-wrap{
  min-height: 110px;              /* adjust as needed */
  display: grid;
  place-items: center;
  padding: 0.5rem;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 14px;
  background: rgba(255,255,255,.02);
}

/* Keep logos contained and crisp */
.sponsor-logo{
  max-width: min(100%, 280px);
  max-height: 80px;
  width: auto;
  height: auto;
  object-fit: contain;
  margin-top: 0.5rem;
}

/* Tighten the label under the logo */
.sponsor-name{
  margin-top: 0.65rem;
  margin-bottom: 0;
}

.table{
  width:100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow:hidden;
}
.table th, .table td{
  padding: .8rem .8rem;
  border-bottom: 1px solid var(--border);
  text-align:left;
  vertical-align: top;
}
.table th{
  color: var(--muted-2);
  font-weight: 700;
  background: rgba(255,255,255,.03);
}
.table tr:last-child td{ border-bottom: 0; }

details{
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: .75rem .9rem;
  background: rgba(255,255,255,.03);
}
details + details{ margin-top: .75rem; }
summary{
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
}
summary::marker{ color: rgba(255,255,255,.55); }
details p{ margin: .6rem 0 0; }


/* Agenda list: scannable, “designed” bullets inside day cards */
.agenda-list{
  list-style: none;
  padding: 0;
  margin: .75rem 0 0;
  display: grid;
  gap: .55rem;
}

/* Each agenda item becomes a small pill-row */
.agenda-list li{
  position: relative;
  padding: .55rem .7rem .55rem 2.0rem;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
  color: var(--muted);
  line-height: 1.35;
}

/* Replace the bullet with a subtle accent dot */
.agenda-list li::before{
  content: "";
  position: absolute;
  left: .7rem;
  top: .95rem;              /* visually aligns with first line */
  width: .55rem;
  height: .55rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 24px rgba(122,40,255,.18);
  opacity: .95;
}

/* Hover/focus polish (works if list items become links later) */
.agenda-list li:hover{
  border-color: rgba(255,255,255,.16);
  background: rgba(255,255,255,.045);
  color: var(--text);
}

/* Tighter on mobile */
@media (max-width: 520px){
  .agenda-list li{
    padding: .5rem .65rem .5rem 1.85rem;
    border-radius: 12px;
  }
  .agenda-list li::before{
    left: .6rem;
  }
}

.site-footer{
  border-top: 1px solid var(--border);
  background: rgba(10,12,18,.35);
  padding: 2rem 0;
}
.footer-grid{
  display:grid;
  gap: 1rem;
  grid-template-columns: 1.4fr 1fr;
}
@media (max-width: 900px){
  .footer-grid{ grid-template-columns: 1fr; }
}
.footer-links{
  display:flex;
  flex-wrap:wrap;
  gap:.75rem;
}
.small{ font-size: .95rem; color: var(--muted-2); }
.xsmall{ font-size: .7rem; text-transform: uppercase; color: var(--muted-2); }