/* ==========================================================================
   INTELLECT CULT — DESIGN SYSTEM
   Concept: "field index" — a research-lab index for student competitions.
   Dark academic-technical base, mono metadata, restrained triad accent.
   ========================================================================== */

:root{
  /* -- color tokens -- */
  --bg:            #0a0e1a;
  --bg-raised:     #0d1220;
  --surface:       #10162a;
  --surface-2:     #141b32;
  --border:        rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.16);
  --text:          #edf1fa;
  --text-muted:    #8b93a8;
  --text-faint:    #5b6478;

  --blue:          #4c7cf0;
  --blue-dim:      #3a5fc4;
  --violet:        #8b5cf6;
  --cyan:          #35d0c6;
  --amber:         #f0b74c;
  --red:           #f0604c;

  --grad-signature: linear-gradient(120deg,#4c7cf0 0%,#8b5cf6 55%,#35d0c6 100%);

  /* -- type -- */
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SFMono-Regular', monospace;

  /* -- layout -- */
  --max-w: 1180px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 72px;
  --space-9: 104px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; }

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.12;
  letter-spacing:-0.01em;
  margin:0;
}
h1{ font-size:clamp(2.1rem,5vw,3.4rem); }
h2{ font-size:clamp(1.5rem,3vw,2.15rem); }
h3{ font-size:1.15rem; }
p{ margin:0; }

.container{
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 24px;
}

/* focus states — always visible */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:4px;
}

/* -------------------------------------------------------------------- */
/* mono / eyebrow / metadata language                                    */
/* -------------------------------------------------------------------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:0.72rem;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--cyan);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:var(--space-3);
}
.eyebrow::before{
  content:'';
  width:14px;
  height:1px;
  background:var(--cyan);
  display:inline-block;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 10px;
  font-family:var(--font-mono);
  font-size:0.78rem;
  color:var(--text-muted);
}
.meta-row .sep{ color:var(--text-faint); }

.tag{
  font-family:var(--font-mono);
  font-size:0.68rem;
  letter-spacing:0.06em;
  text-transform:uppercase;
  padding:3px 9px;
  border-radius:999px;
  border:1px solid var(--border-strong);
  color:var(--text-muted);
  white-space:nowrap;
}
.tag.status-live{ color:var(--cyan); border-color:rgba(53,208,198,0.4); background:rgba(53,208,198,0.08); }
.tag.status-upcoming{ color:var(--blue); border-color:rgba(76,124,240,0.4); background:rgba(76,124,240,0.08); }
.tag.status-past{ color:var(--text-faint); }
.tag.status-live::before{ content:'●'; margin-right:5px; font-size:0.55rem; position:relative; top:-1px; }

/* -------------------------------------------------------------------- */
/* signal bar (signature element)                                        */
/* -------------------------------------------------------------------- */
.signal-bar{
  background:var(--bg-raised);
  border-bottom:1px solid var(--border);
  overflow:hidden;
  white-space:nowrap;
}
.signal-bar__track{
  display:inline-flex;
  gap:48px;
  padding:9px 0;
  font-family:var(--font-mono);
  font-size:0.72rem;
  color:var(--text-muted);
  animation:signal-scroll 32s linear infinite;
}
.signal-bar__track span{ display:inline-flex; align-items:center; gap:8px; }
.signal-bar__track span::before{ content:'//'; color:var(--text-faint); }
@keyframes signal-scroll{
  from{ transform:translateX(0); }
  to{ transform:translateX(-50%); }
}
@media (prefers-reduced-motion: reduce){
  .signal-bar__track{ animation:none; overflow-x:auto; }
}

/* -------------------------------------------------------------------- */
/* header / nav                                                          */
/* -------------------------------------------------------------------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(10,14,26,0.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav{
  max-width:var(--max-w);
  margin:0 auto;
  padding:14px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.05rem;
  letter-spacing:-0.01em;
}
.brand__mark{
  width:26px;height:26px;border-radius:7px;
  background:var(--grad-signature);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);
  font-size:0.65rem;
  color:#fff;
  font-weight:700;
  flex-shrink:0;
}
.nav__links{
  display:flex; align-items:center; gap:28px;
  font-size:0.92rem;
  color:var(--text-muted);
}
.nav__links a{ transition:color .15s ease; padding:4px 0; position:relative; }
.nav__links a:hover, .nav__links a[aria-current="page"]{ color:var(--text); }
.nav__links a[aria-current="page"]::after{
  content:''; position:absolute; left:0; right:0; bottom:-6px; height:2px;
  background:var(--grad-signature); border-radius:2px;
}
.nav__actions{ display:flex; align-items:center; gap:12px; }
.nav__toggle{
  display:none;
  background:none; border:1px solid var(--border-strong); border-radius:8px;
  width:40px; height:40px; color:var(--text); cursor:pointer;
  align-items:center; justify-content:center;
}
.nav__toggle svg{ width:20px; height:20px; }

.nav__mobile{
  display:none;
  flex-direction:column;
  gap:2px;
  background:var(--bg-raised);
  border-bottom:1px solid var(--border);
  padding:8px 24px 18px;
}
.nav__mobile a{
  padding:12px 4px; border-bottom:1px solid var(--border);
  color:var(--text-muted); font-size:0.98rem;
}
.nav__mobile a:last-child{ border-bottom:none; }
.nav__mobile a[aria-current="page"]{ color:var(--text); }
.nav__mobile.is-open{ display:flex; }

@media (max-width:860px){
  .nav__links{ display:none; }
  .nav__toggle{ display:inline-flex; }
}

/* -------------------------------------------------------------------- */
/* buttons                                                                */
/* -------------------------------------------------------------------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:0.92rem;
  padding:12px 22px;
  border-radius:10px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, background .15s ease, border-color .15s ease, opacity .15s ease;
  min-height:44px;
  white-space:nowrap;
}
.btn:active{ transform:scale(0.98); }
.btn-primary{ background:var(--blue); color:#fff; }
.btn-primary:hover{ background:#5f8bf5; }
.btn-secondary{ background:transparent; border-color:var(--border-strong); color:var(--text); }
.btn-secondary:hover{ border-color:var(--cyan); color:var(--cyan); }
.btn-ghost{ background:transparent; color:var(--text-muted); padding:8px 4px; min-height:auto; }
.btn-ghost:hover{ color:var(--text); }
.btn[disabled], .btn.is-disabled{ opacity:0.45; cursor:not-allowed; pointer-events:none; }
.btn-full{ width:100%; }

/* -------------------------------------------------------------------- */
/* hero                                                                   */
/* -------------------------------------------------------------------- */
.hero{
  position:relative;
  padding:var(--space-9) 0 var(--space-8);
  border-bottom:1px solid var(--border);
  overflow:hidden;
}
.hero::before{
  content:'';
  position:absolute; inset:-40% -10% auto -10%; height:600px;
  background:radial-gradient(ellipse at top, rgba(76,124,240,0.16), transparent 60%),
             radial-gradient(ellipse at 70% 0%, rgba(139,92,246,0.14), transparent 55%);
  pointer-events:none;
}
.hero__inner{ position:relative; max-width:760px; }
.hero h1{ margin-bottom:var(--space-4); }
.hero p.lede{ font-size:1.1rem; color:var(--text-muted); max-width:600px; margin-bottom:var(--space-6); }
.hero__ctas{ display:flex; gap:14px; flex-wrap:wrap; }

/* -------------------------------------------------------------------- */
/* sections                                                               */
/* -------------------------------------------------------------------- */
.section{ padding:var(--space-8) 0; }
.section-head{
  display:flex; align-items:flex-end; justify-content:space-between; gap:24px;
  margin-bottom:var(--space-6); flex-wrap:wrap;
}
.section-head h2{ max-width:560px; }
.section-head p{ color:var(--text-muted); margin-top:6px; max-width:520px; }

/* -------------------------------------------------------------------- */
/* cards / grid                                                          */
/* -------------------------------------------------------------------- */
.grid{ display:grid; gap:20px; }
.grid-4{ grid-template-columns:repeat(4,1fr); }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }
@media (max-width:960px){ .grid-4{ grid-template-columns:repeat(2,1fr); } .grid-3{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px){ .grid-4,.grid-3,.grid-2{ grid-template-columns:1fr; } }

.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:var(--space-5);
  transition:border-color .18s ease, transform .18s ease;
}
.card:hover{ border-color:var(--border-strong); }
.card--interactive{ cursor:pointer; }
.card--interactive:hover{ transform:translateY(-2px); }

.card-domain{
  display:flex; flex-direction:column; gap:10px;
  text-align:left;
}
.card-domain .icon{ font-size:1.5rem; }

.event-card{
  display:flex; flex-direction:column; gap:14px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:var(--space-5);
}
.event-card:hover{ border-color:var(--border-strong); }
.event-card__top{ display:flex; justify-content:space-between; align-items:flex-start; gap:12px; }
.event-card h3{ margin:2px 0 6px; }
.event-card p.desc{ color:var(--text-muted); font-size:0.92rem; }
.event-card__footer{
  display:flex; justify-content:space-between; align-items:center;
  padding-top:14px; border-top:1px solid var(--border);
  margin-top:auto;
}
.event-card__fee{ font-family:var(--font-mono); font-size:0.85rem; color:var(--text); }

/* -------------------------------------------------------------------- */
/* filter bar                                                             */
/* -------------------------------------------------------------------- */
.filter-bar{
  display:flex; flex-wrap:wrap; gap:10px; align-items:center;
  margin-bottom:var(--space-6);
}
.search-input{
  flex:1 1 220px;
  background:var(--surface);
  border:1px solid var(--border-strong);
  border-radius:10px;
  padding:11px 14px;
  color:var(--text);
  font-family:var(--font-body);
  font-size:0.92rem;
}
.search-input::placeholder{ color:var(--text-faint); }
.filter-chip{
  font-family:var(--font-mono);
  font-size:0.76rem;
  text-transform:uppercase;
  letter-spacing:0.04em;
  padding:9px 14px;
  border-radius:999px;
  border:1px solid var(--border-strong);
  background:transparent;
  color:var(--text-muted);
  cursor:pointer;
  transition:all .15s ease;
  min-height:auto;
}
.filter-chip:hover{ color:var(--text); border-color:var(--text-muted); }
.filter-chip.is-active{ background:var(--blue); border-color:var(--blue); color:#fff; }

/* -------------------------------------------------------------------- */
/* empty states                                                          */
/* -------------------------------------------------------------------- */
.empty-state{
  text-align:center;
  padding:var(--space-8) var(--space-5);
  border:1px dashed var(--border-strong);
  border-radius:var(--radius-md);
  color:var(--text-muted);
}
.empty-state .glyph{
  font-family:var(--font-mono); font-size:0.72rem; letter-spacing:0.1em;
  color:var(--text-faint); text-transform:uppercase; margin-bottom:10px; display:block;
}
.empty-state h3{ color:var(--text); margin-bottom:8px; }
.empty-state p{ max-width:420px; margin:0 auto; font-size:0.92rem; }

/* -------------------------------------------------------------------- */
/* countdown / terminal readout                                          */
/* -------------------------------------------------------------------- */
.readout{
  display:inline-flex; gap:10px; flex-wrap:wrap;
}
.readout__cell{
  background:var(--surface-2);
  border:1px solid var(--border-strong);
  border-radius:10px;
  padding:12px 16px;
  min-width:74px;
  text-align:center;
}
.readout__cell b{
  display:block; font-family:var(--font-mono); font-size:1.5rem; color:var(--cyan);
}
.readout__cell span{
  display:block; font-family:var(--font-mono); font-size:0.62rem; letter-spacing:0.08em;
  color:var(--text-faint); text-transform:uppercase; margin-top:2px;
}

/* -------------------------------------------------------------------- */
/* how it works / steps                                                  */
/* -------------------------------------------------------------------- */
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--border); border:1px solid var(--border); border-radius:var(--radius-md); overflow:hidden; }
.step{ background:var(--surface); padding:var(--space-5); }
.step .num{ font-family:var(--font-mono); color:var(--text-faint); font-size:0.8rem; }
.step h3{ margin:10px 0 8px; font-size:1rem; }
.step p{ color:var(--text-muted); font-size:0.88rem; }
@media (max-width:860px){ .steps{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:520px){ .steps{ grid-template-columns:1fr; } }

/* -------------------------------------------------------------------- */
/* forms                                                                  */
/* -------------------------------------------------------------------- */
.form-field{ display:flex; flex-direction:column; gap:6px; margin-bottom:var(--space-4); }
.form-field label{ font-size:0.85rem; color:var(--text-muted); }
.form-field input, .form-field textarea, .form-field select{
  background:var(--surface);
  border:1px solid var(--border-strong);
  border-radius:10px;
  padding:12px 14px;
  color:var(--text);
  font-family:var(--font-body);
  font-size:0.95rem;
}
.form-field textarea{ resize:vertical; min-height:110px; }
.form-note{ font-size:0.8rem; color:var(--text-faint); margin-top:4px; }
.notice{
  border:1px solid var(--border-strong);
  border-left:3px solid var(--amber);
  background:rgba(240,183,76,0.06);
  border-radius:8px;
  padding:14px 16px;
  font-size:0.88rem;
  color:var(--text-muted);
  display:flex; gap:10px;
}
.notice.notice-info{ border-left-color:var(--blue); }

/* -------------------------------------------------------------------- */
/* footer                                                                 */
/* -------------------------------------------------------------------- */
.site-footer{ border-top:1px solid var(--border); padding:var(--space-7) 0 var(--space-6); margin-top:var(--space-8); }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:32px; margin-bottom:var(--space-6); }
.footer-col h4{ font-size:0.8rem; text-transform:uppercase; letter-spacing:0.08em; color:var(--text-faint); font-family:var(--font-mono); margin-bottom:14px; }
.footer-col a, .footer-col p{ display:block; color:var(--text-muted); font-size:0.9rem; margin-bottom:10px; }
.footer-col a:hover{ color:var(--text); }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; padding-top:24px; border-top:1px solid var(--border); font-size:0.8rem; color:var(--text-faint); flex-wrap:wrap; gap:10px; }
@media (max-width:860px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:520px){ .footer-grid{ grid-template-columns:1fr; } }

/* -------------------------------------------------------------------- */
/* page header (interior pages)                                          */
/* -------------------------------------------------------------------- */
.page-hero{ padding:var(--space-7) 0 var(--space-6); border-bottom:1px solid var(--border); }
.page-hero p.lede{ color:var(--text-muted); max-width:640px; margin-top:12px; }
.breadcrumb{ font-family:var(--font-mono); font-size:0.78rem; color:var(--text-faint); margin-bottom:14px; }
.breadcrumb a{ color:var(--text-muted); }
.breadcrumb a:hover{ color:var(--cyan); }

/* -------------------------------------------------------------------- */
/* FAQ accordion                                                         */
/* -------------------------------------------------------------------- */
.faq-item{ border-bottom:1px solid var(--border); padding:18px 0; }
.faq-item summary{ cursor:pointer; font-weight:600; display:flex; justify-content:space-between; align-items:center; list-style:none; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:'+'; font-family:var(--font-mono); color:var(--text-faint); font-size:1.2rem; }
.faq-item[open] summary::after{ content:'−'; }
.faq-item p{ color:var(--text-muted); margin-top:12px; font-size:0.92rem; max-width:680px; }

/* -------------------------------------------------------------------- */
/* certificate / leaderboard / profile specifics                        */
/* -------------------------------------------------------------------- */
.lookup-box{
  display:flex; gap:10px; flex-wrap:wrap;
  background:var(--surface); border:1px solid var(--border-strong); border-radius:var(--radius-md);
  padding:var(--space-5);
}
.lookup-box input{ flex:1 1 220px; }

.leader-row{
  display:grid; grid-template-columns:48px 1fr 120px; gap:14px; align-items:center;
  padding:14px 16px; border-bottom:1px solid var(--border); font-size:0.92rem;
}
.leader-row.head{ font-family:var(--font-mono); font-size:0.72rem; text-transform:uppercase; color:var(--text-faint); letter-spacing:0.06em; }

.profile-header{ display:flex; gap:20px; align-items:center; flex-wrap:wrap; }
.avatar-placeholder{
  width:72px; height:72px; border-radius:16px;
  background:var(--surface-2); border:1px solid var(--border-strong);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); color:var(--text-faint); font-size:1.4rem;
}
.stat-block{ display:flex; gap:32px; flex-wrap:wrap; margin-top:var(--space-6); }
.stat-block .stat b{ display:block; font-family:var(--font-mono); font-size:1.6rem; color:var(--text); }
.stat-block .stat span{ font-size:0.78rem; color:var(--text-faint); text-transform:uppercase; letter-spacing:0.06em; }

/* misc utility */
.mt-1{ margin-top:8px; } .mt-2{ margin-top:16px; } .mt-3{ margin-top:24px; } .mt-4{ margin-top:40px; }
.text-muted{ color:var(--text-muted); }
.text-center{ text-align:center; }
.hidden{ display:none !important; }
.skip-link{
  position:absolute; left:-9999px; top:0; background:var(--blue); color:#fff; padding:10px 16px; z-index:200; border-radius:0 0 8px 0;
}
.skip-link:focus{ left:0; }