/* ===========================================================
   EchoYouth — design system
   Monochrome, high-contrast, generous space, restrained accent.
   =========================================================== */

:root{
  --bg:#0D0A26;
  --bg-raised:#181233;
  --text:#F4F3FB;
  --text-dim:rgba(244,243,251,0.60);
  --text-faint:rgba(244,243,251,0.36);
  --line:rgba(244,243,251,0.14);
  --accent:#A855F7;
  --accent-2:#6C5CE7;
  --accent-dim:rgba(168,85,247,0.40);
  --gradient-brand:linear-gradient(90deg, var(--accent-2), var(--accent));
  --radius:2px;
  --max:1160px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:
    radial-gradient(circle at 15% 0%, rgba(168,85,247,0.24) 0%, transparent 45%),
    radial-gradient(circle at 85% 25%, rgba(108,92,231,0.20) 0%, transparent 50%),
    linear-gradient(165deg, #0D0A26 0%, #170C38 45%, #230F48 100%);
  background-attachment:fixed;
  color:var(--text);
  font-family:-apple-system, BlinkMacSystemFont, "Inter", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing:antialiased;
  font-size:16px;
}
h1,h2,h3,h4{
  margin:0;
  font-weight:600;
  letter-spacing:-0.02em;
  line-height:1.05;
}
p{ margin:0; line-height:1.65; color:var(--text-dim); }
a{ color:inherit; text-decoration:none; }
img,svg{ display:block; max-width:100%; }
button{ font-family:inherit; }

.wrap{ max-width:var(--max); margin:0 auto; padding:0 32px; }
@media(max-width:640px){ .wrap{ padding:0 22px; } }

section{ padding:140px 0; }
@media(max-width:900px){ section{ padding:88px 0; } }
.section-tight{ padding:96px 0; }

.eyebrow{
  font-size:13px;
  letter-spacing:0.06em;
  text-transform:uppercase;
  color:var(--text-faint);
  font-weight:500;
  margin-bottom:18px;
  display:block;
}

.hl{
  font-size:clamp(40px, 6vw, 84px);
  max-width:900px;
}
.hl-center{ text-align:center; margin:0 auto; }

.lede{
  font-size:clamp(17px,1.6vw,20px);
  color:var(--text-dim);
  max-width:560px;
  margin-top:24px;
}
.lede-center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ---- buttons ---- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:500;
  padding:14px 28px;
  border-radius:100px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--text);
  cursor:pointer;
  transition:border-color .2s ease, background .2s ease;
}
.btn:hover{ border-color:rgba(245,245,247,0.4); }
.btn-solid{
  background:var(--text);
  color:#000;
  border-color:var(--text);
}
.btn-solid:hover{ background:#d8d8db; border-color:#d8d8db; }
.btn-accent{
  background:var(--gradient-brand);
  border-color:transparent;
  color:#fff;
}
.btn-accent:hover{ filter:brightness(1.1); }
.btn-row{ display:flex; gap:14px; flex-wrap:wrap; }

/* ---- nav ---- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(13,10,38,0.72);
  backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid var(--line);
}
.nav .wrap{ display:flex; align-items:center; justify-content:space-between; height:64px; }
.brand{ font-size:15px; font-weight:600; letter-spacing:-0.01em; }
.nav-links{ display:flex; gap:34px; list-style:none; margin:0; padding:0; }
.nav-links a{ font-size:13.5px; color:var(--text-dim); }
.nav-links a:hover, .nav-links a.active{ color:var(--text); }
.nav-toggle{ display:none; background:none; border:none; cursor:pointer; }
.nav-toggle span{ display:block; width:20px; height:1.5px; background:var(--text); margin:5px 0; }
@media(max-width:820px){
  .nav-links{
    position:absolute; top:64px; left:0; right:0;
    flex-direction:column; gap:0;
    background:rgba(13,10,38,0.97);
    border-bottom:1px solid var(--line);
    display:none;
  }
  .nav-links.open{ display:flex; }
  .nav-links a{ padding:18px 22px; border-top:1px solid var(--line); }
  .nav-toggle{ display:block; }
}

body{ padding-top:64px; }

/* ---- hero ---- */
.hero{
  min-height:calc(100svh - 64px);
  display:flex; align-items:center; justify-content:center;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  width:1000px; height:1000px;
  border-radius:50%;
  background:
    radial-gradient(circle at 35% 35%, rgba(168,85,247,0.36) 0%, transparent 55%),
    radial-gradient(circle at 65% 65%, rgba(108,92,231,0.28) 0%, transparent 55%);
  top:50%; left:50%;
  transform:translate(-50%,-50%);
  filter:blur(30px);
  opacity:0.85;
  pointer-events:none;
}
.hero-inner{ position:relative; z-index:1; }
.hero .hl{ font-size:clamp(44px,8vw,108px); }
.hero .lede{ max-width:640px; }

/* ---- divided list (replaces bordered cards) ---- */
.divided > *{
  border-top:1px solid var(--line);
  padding:40px 0;
}
.divided > *:last-child{ border-bottom:1px solid var(--line); }

.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:48px; }
.grid-2{ display:grid; grid-template-columns:repeat(2,1fr); gap:48px; }
@media(max-width:820px){ .grid-3, .grid-2{ grid-template-columns:1fr; gap:36px; } }

.row-num{ font-size:13px; color:var(--text-faint); font-variant-numeric:tabular-nums; margin-bottom:14px; display:block; }
.item-title{ font-size:20px; margin-bottom:10px; }

/* ---- stats ---- */
.stat-grid{ display:grid; grid-template-columns:repeat(4,1fr); }
@media(max-width:820px){ .stat-grid{ grid-template-columns:repeat(2,1fr); } }
.stat{ padding:32px 0; border-top:1px solid var(--line); }
.stat-num{
  font-size:clamp(36px,4.4vw,56px); font-weight:600; letter-spacing:-0.02em;
  background:var(--gradient-brand);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-label{ color:var(--text-faint); font-size:13.5px; margin-top:8px; }

/* ---- founders ---- */
.founder-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:56px 40px; }
@media(max-width:900px){ .founder-grid{ grid-template-columns:repeat(2,1fr); } }
@media(max-width:600px){ .founder-grid{ grid-template-columns:1fr; } }
.founder{ text-align:center; }
.avatar{
  width:104px; height:104px; border-radius:50%;
  background:var(--bg-raised);
  border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  color:var(--text-faint);
  margin:0 auto 22px;
  overflow:hidden;
}
.avatar-icon{
  width:56px; height:56px;
  color:var(--text-faint);
}
.founder h3{ font-size:17px; }
.founder .role{ font-size:13px; color:var(--accent); margin-top:6px; }
.founder p{ font-size:14px; margin-top:14px; }

/* ---- events ---- */
.event-row{ display:grid; grid-template-columns:160px 1fr auto; gap:24px; align-items:start; }
@media(max-width:700px){ .event-row{ grid-template-columns:1fr; gap:10px; } }
.event-meta{ font-size:13.5px; color:var(--text-faint); }
.event-title{ font-size:19px; margin-bottom:8px; }
.event-desc{ font-size:14.5px; max-width:480px; }
.event-link{ font-size:13.5px; color:var(--accent); align-self:center; white-space:nowrap; }
.event-private{ font-size:13.5px; color:var(--text-faint); align-self:center; white-space:nowrap; }

.past-strip{ display:flex; gap:1px; background:var(--line); overflow-x:auto; margin-top:8px; }
.past-card{ flex:0 0 240px; background:var(--bg); padding:26px 22px; }
.past-card .event-meta{ margin-bottom:10px; }
.past-card h4{ font-size:15px; margin-bottom:8px; }
.past-card p{ font-size:13px; }

/* ---- event type chips + hover blurb ---- */
.type-chips{ display:flex; flex-wrap:wrap; gap:10px; }
.type-chip{
  position:relative;
  border:1px solid var(--line); border-radius:100px;
  padding:8px 16px; font-size:13.5px; color:var(--text-dim);
  background:var(--bg-raised); cursor:default; outline:none;
  transition:border-color .2s ease, color .2s ease;
}
.type-chip:hover, .type-chip:focus-visible{
  border-color:var(--accent); color:var(--text);
}
.type-blurb{
  position:absolute; left:50%; bottom:calc(100% + 12px);
  transform:translateX(-50%) translateY(6px);
  width:max-content; max-width:260px;
  background:var(--text); color:#000;
  font-size:12.5px; line-height:1.45; text-align:left;
  padding:12px 14px; border-radius:8px;
  box-shadow:0 10px 30px rgba(0,0,0,0.35);
  opacity:0; visibility:hidden; pointer-events:none; z-index:40;
  transition:opacity .2s ease, transform .2s ease;
}
.type-blurb::after{
  content:""; position:absolute; top:100%; left:50%;
  transform:translateX(-50%);
  border:6px solid transparent; border-top-color:var(--text);
}
.type-chip:hover .type-blurb,
.type-chip:focus-visible .type-blurb{
  opacity:1; visibility:visible; transform:translateX(-50%) translateY(0);
}
@media(max-width:600px){ .type-blurb{ max-width:220px; } }

.mini-cal{ border:1px solid var(--line); padding:26px; margin-top:64px; }
.cal-days .cell.evt{ position:relative; cursor:default; outline:none; }
.cal-blurb{
  position:absolute; left:50%; bottom:calc(100% + 10px);
  transform:translateX(-50%) translateY(6px);
  width:max-content; max-width:220px;
  background:var(--text); color:#000;
  font-size:12px; line-height:1.45; text-align:left;
  font-weight:400; letter-spacing:normal;
  padding:10px 12px; border-radius:8px;
  box-shadow:0 10px 30px rgba(0,0,0,0.35);
  opacity:0; visibility:hidden; pointer-events:none; z-index:40;
  transition:opacity .2s ease, transform .2s ease;
}
.cal-blurb::after{
  content:""; position:absolute; top:100%; left:50%;
  transform:translateX(-50%);
  border:6px solid transparent; border-top-color:var(--text);
}
.cell.evt:hover .cal-blurb,
.cell.evt:focus-visible .cal-blurb{
  opacity:1; visibility:visible; transform:translateX(-50%) translateY(0);
}
.mini-cal-head{ display:flex; justify-content:space-between; margin-bottom:20px; font-size:14px; color:var(--text-dim); }
.cal-days{ display:grid; grid-template-columns:repeat(7,1fr); gap:4px; text-align:center; font-size:12.5px; }
.cal-days .dow{ color:var(--text-faint); padding-bottom:10px; }
.cal-days .cell{ padding:10px 0; color:var(--text-dim); }
.cal-days .cell.blank{ visibility:hidden; }
.cal-days .cell.evt{ background:var(--gradient-brand); color:#fff; border-radius:50%; }

/* ---- quote ---- */
.quote{
  font-size:clamp(22px,3vw,34px);
  font-weight:500;
  letter-spacing:-0.01em;
  max-width:820px;
  color:var(--text);
}
.quote-attrib{ margin-top:24px; color:var(--text-faint); font-size:14px; }

/* ---- contact / footer ---- */
.newsletter{ display:flex; max-width:420px; margin-top:28px; gap:0; }
.newsletter input{
  flex:1;
  background:transparent;
  border:1px solid var(--line);
  border-right:none;
  border-radius:100px 0 0 100px;
  padding:14px 20px;
  color:var(--text);
  font-size:14.5px;
}
.newsletter input::placeholder{ color:var(--text-faint); }
.newsletter button{
  border:1px solid transparent;
  background:var(--gradient-brand);
  color:#fff;
  border-radius:0 100px 100px 0;
  padding:0 24px;
  font-weight:500;
  cursor:pointer;
}

footer{ border-top:1px solid var(--line); padding:64px 0 32px; }
.footer-grid{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:40px; margin-bottom:56px; }
.footer-links{ display:flex; gap:28px; flex-wrap:wrap; }
.footer-links a{ font-size:13.5px; color:var(--text-dim); }
.footer-links a:hover{ color:var(--text); }
.footer-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; font-size:12.5px; color:var(--text-faint); border-top:1px solid var(--line); padding-top:24px; }

/* ---- reveal-on-load (single orchestrated moment, not per-card) ---- */
.reveal{ animation:rise .8s cubic-bezier(.16,1,.3,1) both; }
@keyframes rise{ from{ opacity:0; transform:translateY(18px); } to{ opacity:1; transform:none; } }
@media(prefers-reduced-motion:reduce){ .reveal{ animation:none; } }

:focus-visible{ outline:2px solid var(--accent); outline-offset:3px; }