@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --bg:      #020614;
  --bg2:     #05091f;
  --card:    #080d25;
  --border:  #111840;
  --indigo:  #6366f1;
  --blue:    #3b82f6;
  --teal:    #14b8a6;
  --gold:    #f59e0b;
  --text:    #e8eeff;
  --text2:   #6878aa;
  --muted:   #1e2860;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

/* ── STARS ───────────────────────── */
.inf-stars {
  position: fixed; inset: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
}

/* ── HEADER ──────────────────────── */
.inf-header {
  position: relative; z-index: 1;
  padding: 80px 24px 60px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: radial-gradient(ellipse at 50% 60%, rgba(99,102,241,.15) 0%, transparent 70%);
}

.inf-header-inner { max-width: 800px; margin: 0 auto; }

.inf-dept { font-size: 0.7rem; letter-spacing: 0.25em; text-transform: uppercase; color: var(--indigo); margin-bottom: 24px; font-weight: 600; }

.inf-symbol {
  font-family: 'Playfair Display', serif;
  font-size: clamp(6rem, 20vw, 14rem);
  font-weight: 900;
  color: transparent;
  background: linear-gradient(135deg, var(--indigo), var(--blue), var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  line-height: 1;
  display: block;
  margin-bottom: -20px;
  opacity: 0.85;
}

.inf-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.02em;
}

.inf-tagline {
  margin-top: 16px;
  color: var(--text2);
  font-size: 1rem;
  font-style: italic;
}

/* ── NAV ─────────────────────────── */
.inf-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(2,6,20,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  display: flex; flex-wrap: wrap; justify-content: center;
}

.inf-nav-a {
  padding: 12px 16px; font-size: 0.78rem; font-weight: 500;
  text-decoration: none; color: var(--text2);
  border-bottom: 2px solid transparent; transition: all 0.2s; white-space: nowrap;
}
.inf-nav-a:hover { color: var(--indigo); border-color: var(--indigo); }
.inf-nav-a.active { color: var(--indigo); border-color: var(--indigo); }

/* ── MAIN ────────────────────────── */
.inf-main { position: relative; z-index: 1; max-width: 960px; margin: 0 auto; padding: 48px 24px 80px; display: flex; flex-direction: column; gap: 52px; }

/* ── SECTION ─────────────────────── */
.inf-section { opacity: 0; transform: translateY(24px); transition: opacity .55s, transform .55s; }
.inf-section.visible { opacity: 1; transform: translateY(0); }

.inf-sec-head {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 22px; border-radius: 10px 10px 0 0; border-left: 4px solid transparent;
}
.inf-sec-head.indigo { background: rgba(99,102,241,.1); border-color: var(--indigo); }
.inf-sec-head.blue   { background: rgba(59,130,246,.08); border-color: var(--blue); }

.inf-sec-n {
  font-family: 'Playfair Display', serif; font-size: 1rem; font-style: italic;
  color: var(--text2); width: 24px;
}
.inf-sec-head h2 { font-family: 'Playfair Display', serif; font-size: 1.3rem; font-weight: 700; color: var(--text); }

.inf-sec-body {
  background: var(--card); border: 1px solid var(--border);
  border-top: none; border-radius: 0 0 10px 10px; padding: 28px;
}
.inf-sec-body p { color: var(--text2); line-height: 1.85; font-size: 0.95rem; margin-bottom: 18px; }
.inf-sec-body p:last-child { margin-bottom: 0; }
.inf-sec-body strong { color: var(--text); }

/* ── QUOTE ───────────────────────── */
.inf-quote {
  border-left: 3px solid var(--indigo);
  padding: 14px 20px; margin: 18px 0;
  background: rgba(99,102,241,.05);
  border-radius: 0 8px 8px 0;
}
.inf-quote blockquote { font-family: 'Playfair Display', serif; font-style: italic; font-size: 1.05rem; color: var(--text); margin-bottom: 6px; }
.inf-quote cite { font-size: 0.8rem; color: var(--text2); }

/* ── PHILO GRID ──────────────────── */
.inf-philo-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-top: 18px; }
.inf-philo-card { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 16px; }
.inf-philo-card h4 { font-family: 'Playfair Display', serif; font-size: 0.9rem; color: var(--indigo); margin-bottom: 8px; }
.inf-philo-card p  { font-size: 0.84rem; color: var(--text2); margin: 0; line-height: 1.7; }

/* ── TIMELINE ────────────────────── */
.inf-timeline { display: flex; flex-direction: column; gap: 10px; }
.inf-tl { display: flex; gap: 14px; }
.inf-tl-era { font-size: 0.7rem; font-weight: 700; color: var(--blue); width: 80px; flex-shrink: 0; padding-top: 3px; text-align: right; }
.inf-tl-c { flex: 1; background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 11px 15px; font-size: 0.86rem; color: var(--text2); line-height: 1.7; }
.inf-tl-c strong { color: var(--text); }
.inf-tl-c em { color: var(--gold); }

/* ── ALEPH HIERARCHY ─────────────── */
.inf-aleph-hierarchy {
  display: flex; align-items: center; gap: 12px; margin: 18px 0;
  padding: 20px; background: var(--bg2); border: 1px solid var(--border); border-radius: 10px;
  flex-wrap: wrap;
}
.inf-aleph-item {
  flex: 1; min-width: 160px; padding: 16px; border-radius: 8px; border: 1px solid;
  text-align: center;
}
.inf-aleph-item.aleph0 { background: rgba(99,102,241,.08); border-color: rgba(99,102,241,.25); }
.inf-aleph-item.aleph1 { background: rgba(59,130,246,.08); border-color: rgba(59,130,246,.25); }
.inf-aleph-item.aleph2 { background: rgba(20,184,166,.08); border-color: rgba(20,184,166,.25); }

.ia-symbol { font-family: 'Playfair Display', serif; font-size: 1.6rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.ia-name   { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text2); margin-bottom: 6px; }
.ia-desc   { font-size: 0.8rem; color: var(--text2); line-height: 1.6; }

.inf-aleph-arrow { font-size: 1.5rem; color: var(--muted); flex-shrink: 0; }

/* ── KEY RESULTS ─────────────────── */
.inf-key-results { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
.inf-kr { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 16px; }
.inf-kr h4 { font-family: 'Playfair Display', serif; font-size: 0.9rem; color: var(--teal); margin-bottom: 8px; }
.inf-kr p  { font-size: 0.84rem; color: var(--text2); margin: 0; line-height: 1.7; }

/* ── DIAG DEMO ───────────────────── */
.inf-diag-demo { background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin: 18px 0; }
.inf-diag-label { font-size: 0.82rem; color: var(--text2); margin-bottom: 14px; font-style: italic; }
.inf-diag-label2 { font-size: 0.82rem; color: var(--indigo); margin-top: 14px; }
.inf-diag-table { display: flex; flex-direction: column; gap: 4px; font-family: monospace; }
.idt-row { display: flex; gap: 10px; align-items: center; font-size: 0.92rem; }
.idt-n { color: var(--blue); width: 30px; }
.idt-d { color: var(--text2); }
.idt-diag { background: rgba(245,158,11,.25); border: 1px solid rgba(245,158,11,.5); border-radius: 3px; padding: 0 3px; color: var(--gold); font-weight: 700; }

/* ── ORDINAL SEQUENCE ────────────── */
.inf-ordinal-sequence {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  padding: 16px; background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; margin: 18px 0;
}
.inf-ordinal-sequence span {
  font-family: 'Playfair Display', serif;
  font-size: 0.9rem; color: var(--text2); padding: 4px 8px;
  border-radius: 4px; border: 1px solid transparent;
}
.inf-ordinal-sequence span.hl {
  color: var(--indigo); border-color: rgba(99,102,241,.3);
  background: rgba(99,102,241,.08); font-weight: 700;
}

/* ── HC BOX ──────────────────────── */
.inf-hc-box { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin: 18px 0; }
.inf-hc-item { padding: 18px; border-radius: 8px; border: 1px solid; }
.inf-hc-item.proved { background: rgba(59,130,246,.08); border-color: rgba(59,130,246,.25); }
.inf-hc-item.open   { background: rgba(99,102,241,.08); border-color: rgba(99,102,241,.25); }
.inf-hc-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--blue); margin-bottom: 8px; }
.inf-hc-item p { font-size: 0.84rem; color: var(--text2); margin: 0; line-height: 1.7; }

/* ── PARADOXES ───────────────────── */
.inf-paradox-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
.inf-para { background: var(--bg2); border: 1px solid var(--border); border-top: 3px solid var(--indigo); border-radius: 0 0 10px 10px; padding: 18px; }
.inf-para h4 { font-size: 0.9rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.inf-para p  { font-size: 0.84rem; color: var(--text2); margin: 0; line-height: 1.75; }

/* ── FORMULAS GRID ───────────────── */
.inf-formulas-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; margin: 18px 0; }
.inf-fml { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 16px; }
.inf-fml-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--blue); margin-bottom: 8px; font-weight: 700; }
.inf-fml-eq { font-family: 'Playfair Display', serif; font-size: 0.95rem; color: var(--text); line-height: 1.6; }

/* ── FOOTER ──────────────────────── */
.inf-footer { position: relative; z-index: 1; border-top: 1px solid var(--border); background: var(--bg2); padding: 20px 32px; }
.inf-footer-inner { max-width: 960px; margin: 0 auto; display: flex; align-items: center; gap: 14px; font-size: 0.8rem; color: var(--text2); }
.inf-footer-sym { font-family: 'Playfair Display', serif; font-size: 1.5rem; color: var(--indigo); }

/* ── RESPONSIVE ──────────────────── */
@media (max-width: 768px) {
  .inf-philo-grid, .inf-hc-box, .inf-paradox-grid, .inf-formulas-grid { grid-template-columns: 1fr; }
  .inf-aleph-hierarchy { flex-direction: column; }
  .inf-key-results { grid-template-columns: 1fr; }
  .inf-tl-era { width: 60px; font-size: 0.65rem; }
}