/* ============ Bruin Quant Traders ============ */
:root {
  --blue: #2774AE;         /* UCLA True Blue */
  --blue-dark: #003B5C;    /* UCLA Darker Blue */
  --blue-deep: #011627;
  --gold: #FFD100;         /* UCLA Gold */
  --gold-soft: #FFC72C;
  --ink: #0b1622;
  --paper: #ffffff;
  --paper-alt: #f4f7fb;
  --muted: #5b6b7c;
  --line: rgba(0, 59, 92, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 50px -25px rgba(0, 59, 92, 0.35);
  --shadow-lg: 0 40px 90px -40px rgba(0, 59, 92, 0.55);
  --maxw: 1160px;
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --display: "Space Grotesk", var(--font);
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 14px 26px; border-radius: 999px;
  font-weight: 600; font-size: 0.98rem; letter-spacing: 0.01em;
  cursor: pointer; border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}
.btn--primary {
  background: var(--gold); color: var(--blue-dark);
  box-shadow: 0 12px 30px -12px rgba(255, 199, 44, 0.7);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -14px rgba(255, 199, 44, 0.9); }
.btn--ghost { border-color: currentColor; color: inherit; background: transparent; }
.btn--ghost:hover { transform: translateY(-2px); background: rgba(255,255,255,0.08); }

/* ============ Nav ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}
.nav.scrolled { border-color: var(--line); box-shadow: 0 6px 24px -18px rgba(0,59,92,0.5); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--display); font-weight: 700; }
.brand__mark {
  display: grid; place-items: center;
  width: 40px; height: 40px; border-radius: 11px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  color: var(--gold); font-family: var(--display); font-weight: 700; font-size: 0.95rem;
  letter-spacing: 0.02em; box-shadow: var(--shadow);
}
.brand__text { font-size: 1.02rem; color: var(--blue-dark); }
.nav__links { display: flex; align-items: center; gap: 30px; }
.nav__links a { font-size: 0.95rem; font-weight: 500; color: var(--blue-dark); opacity: 0.85; transition: opacity 0.15s ease; }
.nav__links a:hover { opacity: 1; }
.nav__cta {
  background: var(--blue-dark); color: #fff !important; opacity: 1 !important;
  padding: 9px 20px; border-radius: 999px; font-weight: 600;
}
.nav__cta:hover { background: var(--blue); }
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__toggle span { width: 24px; height: 2px; background: var(--blue-dark); border-radius: 2px; transition: transform 0.25s ease, opacity 0.2s ease; }
.nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative; overflow: hidden;
  padding: 150px 0 0;
  background:
    linear-gradient(180deg, rgba(1,22,39,0.82) 0%, rgba(0,42,66,0.72) 45%, rgba(1,22,39,0.93) 100%),
    radial-gradient(1100px 550px at 78% -8%, rgba(39,116,174,0.30), transparent 60%),
    url("../img/hero-campus.jpg") center 32% / cover no-repeat;
  background-color: var(--blue-deep);
  color: #eaf3fb;
}
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(900px 500px at 60% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(900px 500px at 60% 0%, #000 30%, transparent 75%);
}
.hero__glow {
  position: absolute; top: -120px; right: -80px; width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(255,209,0,0.22), transparent 62%);
  filter: blur(10px); pointer-events: none;
}
.hero__inner { position: relative; z-index: 2; padding-bottom: 70px; }
.hero__eyebrow {
  display: inline-block; font-family: var(--mono); font-size: 0.82rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--gold);
  padding: 7px 14px; border: 1px solid rgba(255,209,0,0.4); border-radius: 999px;
  margin-bottom: 24px;
}
.hero__title {
  font-family: var(--display); font-weight: 700; line-height: 1.02;
  font-size: clamp(2.8rem, 7vw, 5.4rem); letter-spacing: -0.02em; color: #fff;
}
.grad {
  background: linear-gradient(100deg, var(--gold) 10%, var(--gold-soft) 60%, #fff2b8 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lead {
  max-width: 640px; margin-top: 22px; font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  color: rgba(234,243,251,0.82);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  margin-top: 60px; padding-top: 36px; border-top: 1px solid rgba(255,255,255,0.12);
}
.hero__stats dt { font-family: var(--display); font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 700; color: var(--gold); }
.hero__stats dd { font-size: 0.9rem; color: rgba(234,243,251,0.7); margin-top: 4px; }

/* ============ Marquee ============ */
.marquee {
  position: relative; z-index: 2; overflow: hidden;
  border-top: 1px solid rgba(255,255,255,0.1);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  background: rgba(1, 22, 39, 0.55); padding: 18px 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee__track { display: inline-flex; align-items: center; gap: 28px; white-space: nowrap; animation: scroll 38s linear infinite; }
.marquee__track span { font-family: var(--display); font-size: 1.15rem; font-weight: 600; color: rgba(234,243,251,0.72); }
.marquee__track .dot { color: var(--gold); font-size: 0.7rem; }
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ============ Sections ============ */
.section { padding: 100px 0; }
.section--alt { background: var(--paper-alt); }
.section--dark {
  background:
    radial-gradient(900px 500px at 20% -20%, rgba(39,116,174,0.3), transparent 60%),
    linear-gradient(180deg, var(--blue-dark), var(--blue-deep));
  color: #eaf3fb;
}

/* Photo-backed section overrides (dimmed UCLA campus) */
#competition.section--dark {
  background:
    linear-gradient(rgba(0,42,66,0.80), rgba(1,22,39,0.90)),
    url("../img/campus-dusk.jpg") center / cover fixed no-repeat;
  background-color: var(--blue-deep);
}
#join.section--dark {
  background:
    linear-gradient(rgba(1,22,39,0.84), rgba(0,42,66,0.82)),
    url("../img/hero-campus.jpg") center 45% / cover fixed no-repeat;
  background-color: var(--blue-deep);
}

/* UCLA photo band (Berkeley-style dimmed campus strip) */
.band {
  position: relative; color: #eaf3fb; text-align: center; padding: 118px 0;
  background-image:
    linear-gradient(rgba(1,22,39,0.70), rgba(0,42,66,0.80)),
    url("../img/campus-walk.jpg");
  background-size: cover; background-position: center 40%;
  background-attachment: fixed; background-repeat: no-repeat;
}
.band .container { max-width: 800px; }
.band__eyebrow {
  display: inline-block; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--gold); margin-bottom: 16px;
}
.band__title { font-family: var(--display); font-weight: 700; font-size: clamp(1.9rem, 4vw, 2.9rem); line-height: 1.12; letter-spacing: -0.02em; color: #fff; }
.band__text { margin-top: 18px; font-size: 1.08rem; color: rgba(234,243,251,0.85); }
.section__head { max-width: 720px; margin-bottom: 54px; }
.section__head h2 { font-family: var(--display); font-weight: 700; font-size: clamp(1.9rem, 4vw, 2.9rem); line-height: 1.1; letter-spacing: -0.02em; margin-top: 14px; }
.section--dark .section__head h2 { color: #fff; }
.section__sub { margin-top: 18px; font-size: 1.06rem; color: var(--muted); }
.section--dark .section__sub { color: rgba(234,243,251,0.78); }
.tag {
  display: inline-block; font-family: var(--mono); font-size: 0.75rem;
  letter-spacing: 0.14em; text-transform: uppercase; font-weight: 500;
  color: var(--blue); background: rgba(39,116,174,0.1);
  padding: 6px 12px; border-radius: 999px;
}
.tag--gold { color: var(--gold); background: rgba(255,209,0,0.12); }

/* ============ Pillars ============ */
.pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.pillar {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.pillar:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(39,116,174,0.3); }
.pillar__icon {
  width: 52px; height: 52px; display: grid; place-items: center; font-size: 1.5rem;
  border-radius: 14px; background: linear-gradient(135deg, rgba(39,116,174,0.12), rgba(255,209,0,0.14));
  margin-bottom: 18px;
}
.pillar h3 { font-family: var(--display); font-size: 1.25rem; margin-bottom: 8px; }
.pillar p { color: var(--muted); font-size: 0.96rem; }

/* ============ Tracks ============ */
.tracks { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.track {
  position: relative; background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 32px 30px 30px; overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}
.track:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.track::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: linear-gradient(var(--blue), var(--gold)); }
.track__num { font-family: var(--mono); font-size: 0.85rem; color: var(--blue); font-weight: 500; }
.track h3 { font-family: var(--display); font-size: 1.35rem; margin: 8px 0 10px; }
.track p { color: var(--muted); }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }
.chips li {
  font-size: 0.92rem; font-weight: 500; color: var(--blue-dark);
  background: var(--paper); border: 1px solid var(--line);
  padding: 10px 18px; border-radius: 999px;
}

/* ============ Projects ============ */
.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.project {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.project:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(39,116,174,0.3); }
.project header { display: flex; flex-direction: column; gap: 12px; margin-bottom: 12px; }
.project__badge {
  align-self: flex-start; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--blue-dark); background: rgba(255,209,0,0.18);
  padding: 5px 11px; border-radius: 999px;
}
.project h3 { font-family: var(--display); font-size: 1.3rem; }
.project p { color: var(--muted); }

/* ============ Competition ============ */
.comp { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.comp__card {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius); padding: 30px 24px; text-align: center;
  transition: transform 0.22s ease, background 0.22s ease;
}
.comp__card:hover { transform: translateY(-5px); background: rgba(255,255,255,0.09); }
.comp__stat { font-family: var(--display); font-size: 1.9rem; font-weight: 700; color: var(--gold); }
.comp__label { margin-top: 8px; color: rgba(234,243,251,0.75); font-size: 0.95rem; }
.comp__note { margin-top: 34px; font-family: var(--mono); font-size: 0.9rem; color: rgba(234,243,251,0.6); letter-spacing: 0.04em; }

/* ============ Board ============ */
.board { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.member {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; text-align: center;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.member:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: rgba(39,116,174,0.3); }
.member__avatar {
  width: 76px; height: 76px; margin: 0 auto 16px; border-radius: 50%;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  color: var(--gold); font-family: var(--display); font-weight: 700; font-size: 1.5rem;
  box-shadow: var(--shadow);
}
.member__avatar::after { content: attr(data-initials); }
.member h3 { font-family: var(--display); font-size: 1.14rem; }
.member__role { color: var(--blue); font-weight: 600; font-size: 0.9rem; margin: 4px 0 10px; }
.member__bio { color: var(--muted); font-size: 0.9rem; }

/* ============ Sponsor CTA ============ */
.sponsor-cta {
  display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap;
  background: linear-gradient(120deg, var(--blue-dark), var(--blue));
  color: #fff; border-radius: var(--radius); padding: 44px 46px; box-shadow: var(--shadow-lg);
}
.sponsor-cta h3 { font-family: var(--display); font-size: 1.7rem; margin-bottom: 8px; }
.sponsor-cta p { color: rgba(234,243,251,0.85); max-width: 520px; }

/* ============ Join ============ */
.join { max-width: 760px; }
.join__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }

/* ============ Footer ============ */
.footer { background: var(--blue-deep); color: rgba(234,243,251,0.72); padding: 56px 0 28px; }
.footer__inner { display: flex; flex-wrap: wrap; gap: 30px; justify-content: space-between; align-items: flex-start; padding-bottom: 34px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer__brand { display: flex; gap: 14px; align-items: center; }
.footer__brand strong { color: #fff; font-family: var(--display); }
.footer__brand p { font-size: 0.9rem; }
.footer__links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer__links a { font-size: 0.92rem; transition: color 0.15s ease; }
.footer__links a:hover { color: var(--gold); }
.footer__contact a { color: var(--gold); font-weight: 500; }
.footer__bottom { margin-top: 22px; font-size: 0.82rem; color: rgba(234,243,251,0.5); }

/* ============ Reveal animation ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============ Responsive ============ */
@media (max-width: 980px) {
  .pillars, .board { grid-template-columns: repeat(2, 1fr); }
  .comp { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .nav__links {
    position: fixed; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 4px;
    background: rgba(255,255,255,0.98); backdrop-filter: blur(14px);
    padding: 16px 24px 26px; border-bottom: 1px solid var(--line);
    transform: translateY(-140%); transition: transform 0.3s ease; box-shadow: var(--shadow);
  }
  .nav__links.open { transform: translateY(0); }
  .nav__links a { width: 100%; padding: 10px 0; }
  .nav__cta { width: auto; }
  .nav__toggle { display: flex; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; }
  .tracks, .projects { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .sponsor-cta { padding: 34px 28px; }
  /* Fixed backgrounds are janky on mobile — pin them to scroll */
  .band, #competition.section--dark, #join.section--dark { background-attachment: scroll; }
  .band { padding: 84px 0; }
}
@media (max-width: 520px) {
  .pillars, .board, .comp { grid-template-columns: 1fr; }
  .brand__text { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}