/* ============================
   Reka Clip — Modern Stylesheet
   Inspired by autoresearch.lol
   ============================ */

:root {
  --accent: #6366f1;
  --accent-light: #8b5cf6;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --bg: #fafafa;
  --bg-card: #ffffff;
  --bg-muted: #f1f5f9;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1100px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.8; }
img { max-width: 100%; display: block; }

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

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
}
.navbar-brand img { height: 32px; }
.navbar-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.navbar-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.navbar-links a:hover { color: var(--accent); }
.navbar-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 13px;
  transition: all 0.2s;
}
.navbar-cta:hover { background: var(--accent-light) !important; opacity: 1 !important; }
.mobile-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.mobile-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: 0.3s; }

/* --- Hero --- */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
}
.hero-content { position: relative; max-width: 780px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-glow);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(99, 102, 241, 0.2);
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 14px 32px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-primary:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  color: var(--text);
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* --- Section common --- */
.section {
  padding: 90px 0;
  border-top: 1px solid var(--border);
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

/* --- Capabilities --- */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cap-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.25s;
}
.cap-card:hover { border-color: var(--accent); box-shadow: 0 4px 20px var(--accent-glow); }
.cap-card-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
}
.cap-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.cap-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }
.cap-card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

/* --- Why section --- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.why-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.why-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.why-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }
.why-highlight {
  grid-column: 1 / -1;
  background: var(--accent-glow);
  border-color: rgba(99, 102, 241, 0.3);
  padding: 32px;
}

/* --- Solutions --- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.25s;
}
.solution-card:hover { border-color: var(--accent); }
.solution-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.solution-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }

/* --- Models --- */
.models-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.model-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.model-card.featured { border-color: var(--accent); grid-column: 1 / -1; }
.model-card .model-size {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.model-card h3 { font-size: 1.05rem; font-weight: 700; }
.model-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }

/* --- Developers --- */
.dev-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.dev-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
}
.dev-card-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
}
.dev-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.dev-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }

/* --- Community --- */
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.community-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
}
.community-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.community-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 12px; }
.community-card .btn-primary { padding: 10px 22px; font-size: 13px; }

/* --- Get Started / CTA --- */
.cta-section {
  text-align: center;
  padding: 100px 24px;
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 80%);
  border-top: 1px solid var(--border);
}
.cta-section h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-section p {
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

/* --- FAQ --- */
.faq-list {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  font-family: var(--font);
}
.faq-question:hover { background: var(--bg-muted); }
.faq-arrow {
  transition: transform 0.3s;
  color: var(--text-muted);
  font-size: 0.8rem;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 18px;
}
.faq-answer p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 60px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-brand img { height: 28px; margin-bottom: 12px; }
.footer-brand p { font-size: 0.82rem; color: var(--text-muted); max-width: 260px; line-height: 1.6; }
.footer-col h4 { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-secondary); margin-bottom: 16px; }
.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.footer-bottom-links { display: flex; gap: 24px; }

/* --- Responsive --- */
@media (max-width: 900px) {
  .capabilities-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: 1fr; }
  .models-grid { grid-template-columns: 1fr; }
  .model-card.featured { grid-column: 1; }
  .why-grid { grid-template-columns: 1fr; }
  .why-highlight { grid-column: 1; }
  .dev-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .navbar-links { display: none; }
  .mobile-toggle { display: flex; }
  .navbar-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 16px;
    align-items: flex-start;
  }
  .capabilities-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; justify-content: center; }
}