/* ——————————————————————————————————
   Qualifyd — Main Stylesheet
   Font: Switzer (Fontshare)
   Aesthetic: Whitney Museum-inspired
   Mobile-first, all 7 sections
   —————————————————————————————————— */


/* ——— Reset & Foundation ——— */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --black: #0a0a0a;
  --white: #fafafa;
  --off-white: #f2f1ee;
  --gray-mid: #6b6b6b;
  --gray-light: #b0b0b0;
  --gray-rule: #e0e0e0;
  --font: 'Switzer', -apple-system, 'Helvetica Neue', sans-serif;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--black);
  overflow-x: hidden;
}


/* ——————————————————————————————————
   SECTION 1 — Hero
   —————————————————————————————————— */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2rem 1.5rem;
}

.hero-top {
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
}

.hero-top span {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-mid);
}

.hero-center {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
}

.company-name {
  font-size: clamp(3rem, 12vw, 6.5rem);
  font-weight: 300;
  letter-spacing: -0.035em;
  line-height: 0.95;
  color: var(--black);
  opacity: 0;
  animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.25s forwards;
}

.hero-headline {
  font-size: clamp(1.5rem, 5.5vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--black);
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.45s forwards;
}

.hero-rule {
  width: 2.5rem;
  height: 1px;
  background: var(--black);
  border: none;
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
}

.hero-description {
  max-width: 34ch;
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--gray-mid);
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.65s forwards;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  margin-top: 0.5rem;
  font-family: var(--font);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
  text-decoration: none;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.85s forwards;
  transition: gap 0.3s ease;
}

.hero-cta:hover {
  gap: 1rem;
}

.hero-cta .arrow {
  display: inline-block;
  width: 1.5rem;
  height: 1px;
  background: var(--black);
  position: relative;
  transition: width 0.3s ease;
}

.hero-cta:hover .arrow {
  width: 2.25rem;
}

.hero-cta .arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  border-top: 1px solid var(--black);
  border-right: 1px solid var(--black);
  transform: translateY(-50%) rotate(45deg);
}

.hero-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 1.05s forwards;
}

.hero-bottom-left,
.hero-bottom-right {
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-light);
}

.scroll-line {
  display: block;
  width: 1px;
  height: 2.5rem;
  background: linear-gradient(to bottom, var(--gray-light), transparent);
  margin-bottom: 0.75rem;
  animation: pulse 2.5s ease-in-out infinite;
}


/* ——————————————————————————————————
   Shared Section Styles
   —————————————————————————————————— */
.section {
  padding: 5rem 1.5rem;
  border-top: 1px solid var(--gray-rule);
}

.section-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-mid);
  margin-bottom: 2rem;
}

.section-headline {
  font-size: clamp(1.625rem, 5vw, 2.5rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--black);
  margin-bottom: 2.5rem;
}

.section-headline--large {
  font-size: clamp(1.75rem, 6vw, 3rem);
  font-weight: 300;
  letter-spacing: -0.03em;
}

.section-body {
  max-width: 540px;
}

.section-body p {
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--gray-mid);
  margin-bottom: 1.5rem;
}

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

.section-body-accent {
  color: var(--black) !important;
  font-weight: 500 !important;
}


/* ——————————————————————————————————
   SECTION 2 — Thesis (special treatment)
   —————————————————————————————————— */
.thesis {
  background: var(--off-white);
  border-top: none;
  padding: 5rem 1.5rem 5.5rem;
}

.thesis-body {
  max-width: 540px;
}

.thesis-body p {
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--gray-mid);
  margin-bottom: 1.5rem;
}

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

.thesis-body em {
  font-style: italic;
  color: var(--black);
}


/* ——————————————————————————————————
   SECTION 4 — Cards (What We Do)
   —————————————————————————————————— */
.cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card {
  padding: 2rem 0;
  border-top: 1px solid var(--gray-rule);
}

.card-number {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--gray-light);
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--black);
  margin-bottom: 0.75rem;
}

.card-body {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--gray-mid);
  max-width: 380px;
}


/* ——————————————————————————————————
   SECTION 6 — Dark Section (The Edge)
   —————————————————————————————————— */
.section--dark {
  background: var(--black);
  border-top-color: transparent;
}

.section--dark .section-label {
  color: var(--gray-light);
}

.section--dark .section-headline {
  color: var(--white);
}

.section--dark .section-body p {
  color: var(--gray-light);
}


/* ——————————————————————————————————
   SECTION 7 — Closer / CTA
   —————————————————————————————————— */
.closer {
  text-align: center;
  padding: 6rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.closer .section-headline {
  margin-bottom: 1.25rem;
}

.closer-subhead {
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--gray-mid);
  margin-bottom: 2.5rem;
}

.closer-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
  max-width: 320px;
}

.btn {
  display: block;
  text-align: center;
  font-family: var(--font);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 1rem 2rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.btn--primary {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

.btn--primary:hover {
  background: transparent;
  color: var(--black);
}

.btn--secondary {
  background: transparent;
  color: var(--black);
  border-color: var(--gray-rule);
}

.btn--secondary:hover {
  border-color: var(--black);
}


/* ——————————————————————————————————
   Footer
   —————————————————————————————————— */
.footer {
  border-top: 1px solid var(--gray-rule);
  padding: 2rem 1.5rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-wordmark {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--black);
}

.footer-copy {
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--gray-light);
}


/* ——————————————————————————————————
   Scroll-triggered fade-in
   —————————————————————————————————— */
.section {
  opacity: 0;
  transform: translateY(2rem);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.section.is-visible {
  opacity: 1;
  transform: translateY(0);
}


/* ——————————————————————————————————
   Animations
   —————————————————————————————————— */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(1.25rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}


/* ——————————————————————————————————
   Tablet (640px+)
   —————————————————————————————————— */
@media (min-width: 640px) {
  .hero {
    padding: 2.5rem 3rem;
  }

  .company-name {
    letter-spacing: -0.04em;
  }

  .hero-description {
    font-size: 1.125rem;
    max-width: 38ch;
  }

  .section {
    padding: 6rem 3rem;
  }

  .thesis {
    padding: 6rem 3rem 6.5rem;
  }

  .closer {
    padding: 7rem 3rem;
  }

  .closer-actions {
    flex-direction: row;
    max-width: none;
    width: auto;
    gap: 1rem;
  }

  .btn {
    padding: 1rem 2.5rem;
  }

  .cards {
    flex-direction: row;
    gap: 2rem;
  }

  .card {
    flex: 1;
    border-top: 1px solid var(--gray-rule);
  }

  .footer {
    padding: 2rem 3rem;
  }
}


/* ——————————————————————————————————
   Desktop (1024px+)
   —————————————————————————————————— */
@media (min-width: 1024px) {
  .hero {
    padding: 3rem 4.5rem;
  }

  .hero-description {
    max-width: 42ch;
  }

  .section {
    padding: 8rem 4.5rem;
  }

  .thesis {
    padding: 8rem 4.5rem 8.5rem;
  }

  .closer {
    padding: 9rem 4.5rem;
  }

  .cards {
    gap: 3rem;
  }

  .card-body {
    max-width: 420px;
  }

  .footer {
    padding: 2.5rem 4.5rem;
  }
}


/* ——————————————————————————————————
   Reduced Motion
   —————————————————————————————————— */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    transition-duration: 0.01ms !important;
  }

  .scroll-line {
    animation: none;
    opacity: 0.6;
  }

  .section {
    opacity: 1;
    transform: none;
  }
}