/* ================================================================
   HOME PAGE — Near-black background, blue/cyan quant terminal
   ================================================================ */

/* Hero section */
.hero {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--space-md);
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

/* Near-black overlay — covers the body gradient mesh for a darker home page */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(20, 157, 221, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(55, 179, 237, 0.03) 0%, transparent 40%),
    radial-gradient(ellipse at 80% 20%, rgba(69, 198, 255, 0.02) 0%, transparent 40%),
    #000000;
}

/* Hero glass card — base .glass with reduced blur & opacity */
.hero__card {
  text-align: center;
  padding: var(--space-xl) var(--space-2xl);
  max-width: 650px;
  width: 100%;
  position: relative;
  z-index: 2;
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-color: rgba(255, 255, 255, 0.06);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* Disable hover effect on hero card — keep it static */
.hero__card:hover {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(255, 255, 255, 0.06);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.hero__name {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0;
}

.hero__subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-xs);
  font-weight: 300;
}

.hero__affiliation {
  font-size: 1rem;
  color: var(--text-tertiary);
  margin-bottom: 0;
}

.hero__socials {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

/* ========== THEMATIC BACKGROUND CONTAINER ========== */

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

/* ========== CANVAS (particles + Brownian paths) ========== */

#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* ========== FINANCIAL GRID ========== */

.hero__grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(20, 157, 221, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 157, 221, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(20, 157, 221, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 157, 221, 0.10) 1px, transparent 1px);
  background-size: 80px 60px, 80px 60px, 320px 240px, 320px 240px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.3) 50%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.3) 50%, transparent 80%);
}

/* ========== FLOATING MATH SYMBOLS (15 total) ========== */

.hero__symbols {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.math-symbol {
  position: absolute;
  font-family: 'Times New Roman', 'Georgia', serif;
  color: rgba(20, 157, 221, 0.15);
  pointer-events: none;
  user-select: none;
}

.math-symbol--1  { top: 12%;  left: 6%;   font-size: 2.2rem;  animation: symbolFloat 20s ease-in-out infinite alternate; }
.math-symbol--2  { top: 22%;  right: 10%; font-size: 3.5rem;  animation: symbolFloat 18s ease-in-out 2s infinite alternate; }
.math-symbol--3  { bottom: 28%; left: 12%; font-size: 3rem;   animation: symbolFloat 22s ease-in-out 4s infinite alternate; }
.math-symbol--4  { top: 8%;   right: 22%; font-size: 4rem;    animation: symbolFloat 16s ease-in-out 1s infinite alternate; }
.math-symbol--5  { bottom: 18%; right: 8%; font-size: 2.8rem; animation: symbolFloat 24s ease-in-out 3s infinite alternate; }
.math-symbol--6  { top: 58%;  left: 4%;   font-size: 1.8rem;  font-style: italic; animation: symbolFloat 19s ease-in-out 5s infinite alternate; }
.math-symbol--7  { bottom: 12%; left: 35%; font-size: 2.2rem; animation: symbolFloat 21s ease-in-out 6s infinite alternate; }
.math-symbol--8  { top: 38%;  right: 4%;  font-size: 3rem;    animation: symbolFloat 17s ease-in-out 2.5s infinite alternate; }
.math-symbol--9  { top: 45%;  left: 2%;   font-size: 2.5rem;  color: rgba(13, 142, 207, 0.12); animation: symbolFloat 23s ease-in-out 7s infinite alternate; }
.math-symbol--10 { top: 6%;   left: 55%;  font-size: 2rem;    color: rgba(55, 179, 237, 0.12); animation: symbolFloat 15s ease-in-out 1.5s infinite alternate; }
.math-symbol--11 { bottom: 35%; right: 18%; font-size: 3.2rem; color: rgba(20, 157, 221, 0.10); animation: symbolFloat 26s ease-in-out 8s infinite alternate; }
.math-symbol--12 { top: 75%;  left: 20%;  font-size: 2.4rem;  color: rgba(13, 142, 207, 0.14); animation: symbolFloat 20s ease-in-out 4.5s infinite alternate; }
.math-symbol--13 { top: 30%;  left: 28%;  font-size: 2rem;    color: rgba(55, 179, 237, 0.10); animation: symbolFloat 18s ease-in-out 3.5s infinite alternate; }
.math-symbol--14 { bottom: 45%; right: 30%; font-size: 2.6rem; color: rgba(20, 157, 221, 0.12); animation: symbolFloat 22s ease-in-out 6.5s infinite alternate; }
.math-symbol--15 { top: 85%;  right: 5%;  font-size: 1.9rem;  color: rgba(13, 142, 207, 0.13); animation: symbolFloat 19s ease-in-out 9s infinite alternate; }

/* ========== FULL FORMULAS (10 total) ========== */

.hero__formulas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.math-formula {
  position: absolute;
  font-family: 'Times New Roman', 'Georgia', serif;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  letter-spacing: 0.03em;
  text-shadow: 0 0 12px rgba(20, 157, 221, 0.28);
}

.math-formula--1  { top: 6%;   left: 2%;   font-size: 1.1rem;  color: rgba(20, 157, 221, 0.26);  animation: formulaDrift 25s ease-in-out infinite alternate; }
.math-formula--2  { bottom: 32%; right: 2%; font-size: 0.95rem; color: rgba(13, 142, 207, 0.23);  animation: formulaDrift 22s ease-in-out 3s infinite alternate; }
.math-formula--3  { top: 70%;  left: 8%;   font-size: 1rem;    color: rgba(55, 179, 237, 0.24);   animation: formulaDrift 28s ease-in-out 6s infinite alternate; }
.math-formula--4  { bottom: 6%; right: 12%; font-size: 1.05rem; color: rgba(20, 157, 221, 0.22);  animation: formulaDrift 24s ease-in-out 2s infinite alternate; }
.math-formula--5  { top: 32%;  left: 1%;   font-size: 1.15rem; color: rgba(13, 142, 207, 0.24);   animation: formulaDrift 20s ease-in-out 4s infinite alternate; }
.math-formula--6  { top: 80%;  right: 6%;  font-size: 0.9rem;  color: rgba(55, 179, 237, 0.20);   animation: formulaDrift 26s ease-in-out 1s infinite alternate; }
.math-formula--7  { top: 18%;  right: 5%;  font-size: 0.85rem; color: rgba(20, 157, 221, 0.20);   animation: formulaDrift 23s ease-in-out 5s infinite alternate; }
.math-formula--8  { bottom: 50%; left: 5%; font-size: 0.9rem;  color: rgba(13, 142, 207, 0.22);   animation: formulaDrift 27s ease-in-out 7s infinite alternate; }
.math-formula--9  { top: 55%;  right: 3%;  font-size: 0.85rem; color: rgba(55, 179, 237, 0.19);   animation: formulaDrift 21s ease-in-out 8s infinite alternate; }
.math-formula--10 { bottom: 15%; left: 30%; font-size: 0.9rem; color: rgba(20, 157, 221, 0.21);   animation: formulaDrift 24s ease-in-out 3.5s infinite alternate; }

/* ========== STOCK NUMBERS (15 total) ========== */

.hero__numbers {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.stock-number {
  position: absolute;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  color: rgba(255, 255, 255, 0.16);
  pointer-events: none;
  user-select: none;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.stock-number--up {
  color: rgba(20, 157, 221, 0.30);
}

.stock-number--down {
  color: rgba(248, 113, 113, 0.28);
}

.stock-number--1  { top: 16%;  right: 5%;  font-size: 1.05rem; animation: numberPulse 15s ease-in-out infinite alternate; }
.stock-number--2  { top: 20%;  right: 2%;  animation: numberPulse 12s ease-in-out 1s infinite alternate; }
.stock-number--3  { bottom: 23%; left: 3%; font-size: 1rem;    animation: numberPulse 18s ease-in-out 3s infinite alternate; }
.stock-number--4  { bottom: 20%; left: 7%; animation: numberPulse 14s ease-in-out 2s infinite alternate; }
.stock-number--5  { top: 4%;   left: 32%;  font-size: 1rem;    animation: numberPulse 20s ease-in-out 5s infinite alternate; }
.stock-number--6  { top: 8%;   left: 36%;  animation: numberPulse 16s ease-in-out 4s infinite alternate; }
.stock-number--7  { bottom: 10%; right: 28%; animation: numberPulse 17s ease-in-out 6s infinite alternate; }
.stock-number--8  { top: 48%;  right: 1%;  font-size: 0.9rem;  animation: numberPulse 19s ease-in-out 1.5s infinite alternate; }
.stock-number--9  { bottom: 38%; left: 22%; animation: numberPulse 13s ease-in-out 7s infinite alternate; }
.stock-number--10 { top: 65%;  right: 18%; animation: numberPulse 21s ease-in-out 2.5s infinite alternate; }
.stock-number--11 { top: 10%;  left: 10%;  font-size: 0.8rem;  color: rgba(13, 142, 207, 0.20); animation: numberPulse 16s ease-in-out 8s infinite alternate; }
.stock-number--12 { top: 14%;  left: 14%;  color: rgba(20, 157, 221, 0.25); animation: numberPulse 14s ease-in-out 9s infinite alternate; }
.stock-number--13 { bottom: 42%; right: 6%; font-size: 0.8rem; color: rgba(255, 255, 255, 0.14); animation: numberPulse 18s ease-in-out 4.5s infinite alternate; }
.stock-number--14 { top: 72%;  left: 3%;   animation: numberPulse 15s ease-in-out 6.5s infinite alternate; }
.stock-number--15 { bottom: 8%; left: 55%;  font-size: 0.8rem; color: rgba(13, 142, 207, 0.18); animation: numberPulse 20s ease-in-out 3.5s infinite alternate; }

/* ========== SCROLLING TICKER TAPES ========== */

.hero__ticker {
  position: absolute;
  left: 0;
  width: 100%;
  overflow: hidden;
  opacity: 0.38;
}

.hero__ticker--top    { top: 8%; }
.hero__ticker--bottom { bottom: 8%; }

.ticker__track {
  display: flex;
  gap: 3rem;
  white-space: nowrap;
  animation: tickerScroll 35s linear infinite;
  width: max-content;
}

.ticker__track--reverse {
  animation: tickerScrollReverse 38s linear infinite;
}

.ticker__item {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.04em;
}

.ticker__item em {
  font-style: normal;
  margin-left: 0.4em;
}

.ticker__up  { color: rgba(20, 157, 221, 0.85); }
.ticker__down { color: rgba(248, 113, 113, 0.80); }

/* ========== ABOUT SECTION ========== */

.about h2 {
  margin-bottom: var(--space-md);
}

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}