/* ==========================================================================
   ABOUT.CSS — Premium, Minimalist Redesign for Infotris About Page
   Aesthetic reference: Apple, Linear, Stripe, Notion, OpenAI, GitHub
   ========================================================================== */

/* Page background override to pure white for crisp, high-contrast look */
body.page-about {
  background-color: #ffffff;
  color: #111111;
  font-family: var(--font-family-base);
  overflow-x: hidden;
}

body.page-about .footer-section {
  padding-top: 6rem;
}

body.page-about .footer-bottom {
  margin-top: 3rem;
  padding: 2.5rem 0;
}

/* --------------------------------------------------------------------------
   SECTION 1: HERO
   -------------------------------------------------------------------------- */
.about-hero {
  padding: 10rem 1.5rem 7rem;
  text-align: center;
  max-width: 58rem;
  margin: 0 auto;
}

.about-hero__eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: #888888;
  margin-bottom: 2rem;
}

.about-hero__title {
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: #111111;
  margin-bottom: 2.5rem;
  white-space: pre-line;
}

.about-hero__lead {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: #666666;
  line-height: 1.6;
  max-width: 42rem;
  margin: 0 auto 3.5rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.hero-ctas {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  align-items: center;
}

/* --------------------------------------------------------------------------
   SECTION 2: WHAT IS INFOTRIS
   -------------------------------------------------------------------------- */
.about-what {
  max-width: 46rem;
  margin: 8rem auto;
  padding: 0 1.5rem;
  text-align: left;
}

.about-what__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #111111;
  margin-bottom: 2rem;
  line-height: 1.15;
}

.about-what__content {
  font-size: 1.125rem;
  color: #555555;
  line-height: 1.75;
  letter-spacing: -0.01em;
}

.about-what__content p {
  margin-bottom: 1.5rem;
}

.about-what__content p:last-child {
  margin-bottom: 0;
}

.highlight-large {
  font-size: 1.35rem;
  color: #111111;
  line-height: 1.6;
  font-weight: 450;
  margin-bottom: 2rem;
}

/* --------------------------------------------------------------------------
   SECTION 3: WHY INFOTRIS
   -------------------------------------------------------------------------- */
.about-why-name {
  max-width: 60rem;
  margin: 10rem auto;
  padding: 0 1.5rem;
}

.why-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.why-text h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #111111;
  margin-bottom: 2rem;
}

.why-item {
  margin-bottom: 2rem;
}

.why-item:last-child {
  margin-bottom: 0;
}

.why-item__title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #111111;
  margin-bottom: 0.5rem;
}

.why-item__desc {
  font-size: 1rem;
  color: #666666;
  line-height: 1.65;
}

.why-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #fafafa;
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 12px;
  padding: 3rem;
  min-height: 280px;
}

.nodes-diagram {
  max-width: 100%;
}

.nodes-diagram circle {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), fill 0.3s ease;
}

.nodes-diagram:hover circle {
  fill: #000000;
  transform: scale(1.1);
  transform-origin: center;
}

/* --------------------------------------------------------------------------
   SECTION 4: OUR PHILOSOPHY
   -------------------------------------------------------------------------- */
.about-philosophy {
  background-color: #fafafa;
  border-top: 1px solid rgba(0, 0, 0, 0.04);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  padding: 9rem 1.5rem;
  text-align: center;
}

.philosophy-container {
  max-width: 52rem;
  margin: 0 auto;
}

.philosophy-quote {
  font-size: clamp(1.5rem, 3.2vw, 2.125rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.03em;
  color: #111111;
  margin-bottom: 3.5rem;
}

.philosophy-desc {
  font-size: 1.0625rem;
  color: #666666;
  line-height: 1.8;
  max-width: 44rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* --------------------------------------------------------------------------
   SECTION 5: HOW IT WORKS
   -------------------------------------------------------------------------- */
.about-how {
  max-width: 60rem;
  margin: 10rem auto;
  padding: 0 1.5rem;
}

.how-header {
  text-align: center;
  margin-bottom: 4rem;
}

.how-header h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #111111;
}

.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.how-card {
  padding: 2.5rem 2.25rem;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 8px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  display: flex;
  flex-direction: column;
}

.how-card:hover {
  border-color: rgba(0, 0, 0, 0.15);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.03);
  transform: translateY(-2px);
}

.how-card__num {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #a8a8a8;
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
}

.how-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #111111;
  margin-bottom: 1rem;
}

.how-card__text {
  font-size: 0.9375rem;
  color: #666666;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   SECTION 6: THE ECOSYSTEM
   -------------------------------------------------------------------------- */
.about-ecosystem {
  max-width: 60rem;
  margin: 10rem auto;
  padding: 0 1.5rem;
}

.ecosystem-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 5rem;
  align-items: start;
}

.ecosystem-intro h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #111111;
  margin-bottom: 1.5rem;
}

.ecosystem-intro p {
  font-size: 1.0625rem;
  color: #666666;
  line-height: 1.7;
}

.ecosystem-list {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.ecosystem-item {
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  padding-bottom: 2rem;
}

.ecosystem-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.ecosystem-item__title {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #111111;
  margin-bottom: 0.5rem;
}

.ecosystem-item__desc {
  font-size: 0.9375rem;
  color: #666666;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   SECTION 7: OPEN LETTER
   -------------------------------------------------------------------------- */
.about-letter {
  background-color: #fafafa;
  border-top: 1px solid rgba(0, 0, 0, 0.04);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  padding: 9rem 1.5rem;
}

.letter-container {
  max-width: 36rem;
  margin: 0 auto;
}

.letter-title {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 3.5rem;
  text-align: center;
}

.letter-body {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #333333;
}

.letter-body p {
  margin-bottom: 1.5rem;
}

.letter-body p:last-child {
  margin-bottom: 0;
}

.letter-signature {
  margin-top: 3.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: #111111;
  line-height: 1.4;
}

.letter-signature span {
  display: block;
  font-weight: 400;
  color: #888888;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

/* --------------------------------------------------------------------------
   SECTION 8: ABOUT FOUNDER
   -------------------------------------------------------------------------- */
.about-founder {
  max-width: 50rem;
  margin: 10rem auto;
  padding: 0 1.5rem;
}

.founder-card {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 3rem;
  align-items: center;
  border: 1px solid rgba(0, 0, 0, 0.06);
  padding: 3.5rem;
  border-radius: 12px;
  background: #ffffff;
}

.founder-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.25rem;
  font-weight: 600;
  color: #888888;
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.founder-info h3 {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
  color: #111111;
}

.founder-role {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #a8a8a8;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.founder-bio {
  color: #666666;
  line-height: 1.7;
  font-size: 0.975rem;
}

.founder-bio p {
  margin-bottom: 1.25rem;
}

.founder-bio p:last-child {
  margin-bottom: 0;
}

.founder-belief {
  font-size: 1.0625rem;
  font-weight: 600;
  color: #111111;
  line-height: 1.5;
  border-left: 2px solid #111111;
  padding-left: 1rem;
}

/* --------------------------------------------------------------------------
   SECTION 9: CLOSING STATEMENT & FOOTER QUOTE
   -------------------------------------------------------------------------- */
.about-closing {
  padding: 10rem 1.5rem;
  text-align: center;
  max-width: 44rem;
  margin: 0 auto;
}

.closing-title {
  font-size: clamp(1.75rem, 3.8vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.03em;
  color: #111111;
  margin-bottom: 1.5rem;
}

.closing-subtitle {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 450;
  color: #666666;
  margin-bottom: 3.5rem;
  letter-spacing: -0.02em;
}

.footer-quote-section {
  padding: 6rem 1.5rem 3rem;
  text-align: center;
  font-size: 1.125rem;
  font-weight: 500;
  color: #a8a8a8;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   RESPONSIVE DESIGN (Adaptive breakpoints)
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .about-hero {
    padding-top: 8rem;
  }
  
  .why-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .why-visual {
    order: -1;
  }
  
  .how-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .ecosystem-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .founder-card {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
    padding: 2.5rem;
  }
  
  .founder-avatar {
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .about-hero {
    padding-top: 6rem;
  }

  .about-hero__title {
    font-size: 2.5rem;
  }
  
  .hero-ctas {
    flex-direction: column;
    width: 100%;
    max-width: 20rem;
    margin: 0 auto;
  }
  
  .btn-primary, .btn-secondary {
    width: 100%;
  }
  
  .about-what, .about-why-name, .about-how, .about-ecosystem, .about-founder, .about-closing {
    margin: 6rem auto;
  }
  
  .about-philosophy, .about-letter {
    padding: 6rem 1.5rem;
  }
}