/* ============================================================
   OWLGEBRA AI — STYLESHEET
   Design: Clean white (ollama.com) + content structure (primeintellect.ai)
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --white: #ffffff;
  --black: #0a0a0a;
  --gray-50: #f9f9f9;
  --gray-100: #f2f2f2;
  --gray-200: #e5e5e5;
  --gray-400: #a0a0a0;
  --gray-600: #666666;
  --accent: #1a1a1a;
  --accent-muted: #333333;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.15);

  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Mono', monospace;

  --max-w: 1200px;
  --section-pad: 120px 0;
  --radius: 12px;
  --radius-sm: 8px;

  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --nav-h: 64px;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--white);
  color: var(--black);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, canvas { display: block; }
button { cursor: pointer; font-family: inherit; }

/* ── Typography ─────────────────────────────────────────────── */
.h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--black);
}
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 1.25rem;
}

/* ── Container ──────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.375rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: var(--transition);
  white-space: nowrap;
  border: 1.5px solid transparent;
}
.btn--primary {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}
.btn--primary:hover {
  background: #1f1f1f;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.btn--ghost {
  background: transparent;
  color: var(--black);
  border-color: var(--border-strong);
}
.btn--ghost:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
}
.btn--outline {
  background: transparent;
  color: var(--black);
  border-color: var(--black);
}
.btn--outline:hover {
  background: var(--black);
  color: var(--white);
}
.btn--lg {
  padding: 0.8rem 1.75rem;
  font-size: 0.95rem;
}

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

/* ── NAV ─────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.nav.scrolled {
  box-shadow: 0 1px 24px rgba(0,0,0,0.07);
}
.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.nav__logo-img {
  width: 38px;
  height: 38px;
  object-fit: contain;
  flex-shrink: 0;
  /* nudge down slightly to compensate for whitespace at top of PNG */
  margin-top: 3px;
}
.nav__logo-accent { color: var(--gray-400); font-weight: 400; }
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}
.nav__links a {
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  font-size: 0.875rem;
  color: var(--gray-600);
  transition: var(--transition);
  white-space: nowrap;
}
.nav__links a:hover { color: var(--black); background: var(--gray-100); }
.nav__cta {
  background: var(--black) !important;
  color: var(--white) !important;
  border-radius: 7px !important;
  padding: 0.4rem 1rem !important;
}
.nav__cta:hover { background: #222 !important; }
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  padding: 4px;
}
.nav__toggle span {
  display: block;
  height: 1.5px;
  background: var(--black);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── HERO ────────────────────────────────────────────────────── */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 3rem) 1.25rem 5rem;
  text-align: center;
  position: relative;
  background: var(--white);
}
.hero__animation-wrap {
  width: 100%;
  max-width: 960px;
  margin-bottom: 3rem;
  display: flex;
  justify-content: center;
}
.hero__canvas {
  width: 100%;
  max-width: 960px;
  height: auto;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
}
.hero__content {
  max-width: 680px;
}
.hero__title {
  font-size: clamp(2.25rem, 5.5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.1;
  color: var(--black);
  margin-bottom: 1.25rem;
}
.hero__title-accent {
  background: linear-gradient(135deg, #1a1a1a 0%, #555 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__sub {
  font-size: 1.1rem;
  line-height: 1.65;
  color: var(--gray-600);
  max-width: 560px;
  margin: 0 auto 2rem;
}
.hero__actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}
.hero__scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--gray-400);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gray-400), transparent);
  animation: scrollPulse 1.8s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.1); }
}

/* ── MARQUEE BAR ─────────────────────────────────────────────── */
.marquee-bar {
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--gray-50);
  padding: 0.875rem 0;
  white-space: nowrap;
}
.marquee-bar__inner {
  display: inline-flex;
  gap: 1.5rem;
  animation: marquee 20s linear infinite;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--gray-400);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.marquee-bar__inner .sep { color: var(--gray-200); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ── SECTIONS (shared) ───────────────────────────────────────── */
.section {
  padding: var(--section-pad);
}
.section:nth-child(even) {
  background: var(--white);
}

/* ── WHAT WE DO ──────────────────────────────────────────────── */
.what__header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 4rem;
  align-items: start;
  margin-bottom: 4rem;
}
.what__header .h2 { grid-column: 1; }
.what__desc {
  grid-column: 2;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--gray-600);
  padding-top: 0.25rem;
}
.what__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.what__card {
  padding: 2.5rem;
  position: relative;
  transition: background var(--transition);
}
.what__card:nth-child(odd) {
  border-right: 1px solid var(--border);
}
.what__card:nth-child(-n+2) {
  border-bottom: 1px solid var(--border);
}
.what__card:hover { background: var(--gray-50); }
.what__card-num {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gray-400);
  margin-bottom: 1.5rem;
  font-variant-numeric: tabular-nums;
}
.what__card-body h3 {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.875rem;
  color: var(--black);
}
.what__card-body p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--gray-600);
}

/* ── PLATFORM DEEP DIVE ──────────────────────────────────────── */
.platform__block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 6rem;
  align-items: start;
  padding: 4rem 0;
}
.platform__block-header { display: flex; flex-direction: column; gap: 1.25rem; }
.platform__block-header .h2 { font-size: clamp(1.5rem, 2.5vw, 2.25rem); }
.platform__block-desc {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--gray-600);
}
.platform__features {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.platform__feature {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem 1.75rem;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.platform__feature:last-child { border-bottom: none; }
.platform__feature:hover { background: var(--gray-50); }
.platform__feature-letter {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--black);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0;
  margin-top: 2px;
}
.platform__feature strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
  color: var(--black);
}
.platform__feature p {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--gray-600);
  margin: 0;
}
.platform__divider {
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ── RESEARCH ────────────────────────────────────────────────── */
.research { background: var(--gray-50) !important; }
.research__header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 4rem;
  align-items: start;
  margin-bottom: 3.5rem;
}
.research__header .h2 { grid-column: 1; }
.research__header p {
  grid-column: 2;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--gray-600);
  padding-top: 0.25rem;
}
.research__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.research__card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: box-shadow var(--transition), transform var(--transition);
}
.research__card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.07);
  transform: translateY(-2px);
}
.research__card-tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--black);
  color: var(--white);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  width: fit-content;
}
.research__card-meta {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gray-400);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.research__card-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--black);
}
.research__card-desc {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--gray-600);
  flex: 1;
}
.research__card-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--black);
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 1px;
  width: fit-content;
  transition: var(--transition);
}
.research__card-link:hover {
  border-color: var(--black);
}

/* ── BLOG ────────────────────────────────────────────────────── */
.blog__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.blog__see-all {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition);
}
.blog__see-all:hover { color: var(--black); }
.blog__tabs {
  display: flex;
  gap: 0.375rem;
  margin-bottom: 2.5rem;
}
.blog__tab {
  padding: 0.375rem 0.875rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  background: none;
  border: 1px solid var(--border);
  color: var(--gray-600);
  transition: var(--transition);
}
.blog__tab.active, .blog__tab:hover {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}
.blog__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.blog__card {
  border-top: 2px solid var(--black);
  padding: 1.75rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
}
.blog__card:hover { opacity: 0.75; }
.blog__card > a {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
}
.blog__card-cat {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
}
.blog__card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.35;
  color: var(--black);
}
.blog__card p {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--gray-600);
  flex: 1;
}
.blog__card-date {
  font-size: 0.75rem;
  color: var(--gray-400);
  font-weight: 500;
}

/* ── CTA SECTION ─────────────────────────────────────────────── */
.cta-section { background: var(--gray-50) !important; }
.cta-box {
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: clamp(3rem, 6vw, 5rem) clamp(2rem, 6vw, 5rem);
  text-align: center;
  background: var(--white);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}
.cta-box__owl-img {
  width: 80px;
  height: 80px;
  object-fit: contain;
}
.cta-box .h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
.cta-box p {
  font-size: 1.05rem;
  color: var(--gray-600);
  max-width: 440px;
}
.cta-box__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.5rem;
}

/* ── FOOTER ──────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
  background: var(--white);
}
.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer__brand-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
}
.footer__brand-name {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.footer__tagline {
  font-size: 0.85rem;
  color: var(--gray-400);
  margin-top: 0.25rem;
}
.footer__links-group h4 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 1rem;
}
.footer__links-group ul {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.footer__links-group a {
  font-size: 0.875rem;
  color: var(--gray-600);
  transition: color var(--transition);
}
.footer__links-group a:hover { color: var(--black); }
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--gray-400);
  flex-wrap: wrap;
  gap: 0.75rem;
}
.footer__legal {
  display: flex;
  gap: 1.5rem;
}
.footer__legal a { color: var(--gray-400); transition: color var(--transition); }
.footer__legal a:hover { color: var(--black); }

/* ── RESPONSIVE ──────────────────────────────────────────────── */

/* Tablet: 768px–1023px */
@media (max-width: 1023px) {
  :root { --section-pad: 80px 0; }

  .what__header,
  .research__header {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .what__desc { grid-column: 1; }
  .research__header p { grid-column: 1; }

  .what__cards {
    grid-template-columns: repeat(2, 1fr);
    border-radius: var(--radius);
  }

  .platform__block {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .research__grid,
  .blog__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .footer__brand { grid-column: 1 / -1; }
}

/* Mobile: <768px */
@media (max-width: 767px) {
  :root { --section-pad: 60px 0; }

  /* Nav mobile */
  .nav__toggle { display: flex; }
  .nav__links {
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 1.5rem;
    gap: 0.25rem;
    display: none;
    border-top: 1px solid var(--border);
  }
  .nav__links.open { display: flex; }
  .nav__links a { padding: 0.75rem 1rem; font-size: 1rem; }
  .nav__cta {
    text-align: center;
    padding: 0.75rem 1rem !important;
    margin-top: 0.5rem;
  }
  /* Hamburger → X */
  .nav__toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav__toggle.open span:nth-child(2) { opacity: 0; }
  .nav__toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .hero__title { font-size: 2rem; }
  .hero__sub { font-size: 0.95rem; }
  .hero__scroll-hint { display: none; }

  .what__cards {
    grid-template-columns: 1fr;
  }
  .what__card:nth-child(odd) {
    border-right: none;
  }
  .what__card:nth-child(-n+2) {
    border-bottom: none;
  }
  .what__card:not(:last-child) {
    border-bottom: 1px solid var(--border);
  }

  .research__grid,
  .blog__grid {
    grid-template-columns: 1fr;
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer__brand { grid-column: 1; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}