/* =============================================
   Query Machines — Shared Stylesheet
   ============================================= */

/* 1. Reset & Base
   ============================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--gray-600);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* 2. CSS Custom Properties
   ============================================= */
:root {
  /* Primary blues */
  --blue-600: #2563EB;
  --blue-700: #1D4ED8;
  --blue-500: #3B82F6;
  --blue-100: #DBEAFE;
  --blue-50:  #EFF6FF;

  /* Neutrals */
  --white:    #FFFFFF;
  --gray-50:  #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-400: #9CA3AF;
  --gray-600: #4B5563;
  --gray-900: #111827;

  /* Accent */
  --cyan-400: #22D3EE;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;

  /* Spacing */
  --nav-height: 64px;
}

/* 3. Typography
   ============================================= */
h1, h2, h3, h4, h5, h6 {
  color: var(--gray-900);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--text-6xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-xl); font-weight: 600; }

p {
  max-width: 65ch;
}

/* 4. Layout Utilities
   ============================================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* 5. Navigation
   ============================================= */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

#site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--gray-200);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 101;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-wordmark {
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--gray-900);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-600);
  letter-spacing: 0.01em;
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue-600);
  transition: width 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--blue-600);
}

.nav-links a.active::after,
.nav-links a:hover::after {
  width: 100%;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  z-index: 101;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--gray-900);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 6. Hero Section
   ============================================= */
#hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 850px;
  text-align: center;
  padding: 0 2rem;
}

.hero-content h1 {
  margin-bottom: 1.5rem;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero-highlight {
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--gray-400);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  animation: bounce 2.5s ease-in-out infinite;
  opacity: 0.4;
  transition: opacity 0.5s ease;
}

.hero-scroll-indicator.hidden {
  opacity: 0;
  pointer-events: none;
}

.hero-scroll-indicator svg {
  width: 24px;
  height: 24px;
  stroke: var(--gray-400);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* 7. Pillar Sections
   ============================================= */
.pillar-section {
  padding: 6rem 0;
  background: var(--white);
  overflow: hidden;
}

.pillar-section--alt {
  background: var(--gray-50);
}

.pillar-row {
  display: flex;
  align-items: center;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.pillar-row--reverse {
  flex-direction: row-reverse;
}

.pillar-text {
  flex: 1;
  min-width: 0;
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 1s ease, transform 1s ease;
}

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

.pillar-label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--blue-600);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.pillar-text h2 {
  margin-bottom: 1.25rem;
}

.pillar-text p {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--gray-600);
  margin-bottom: 1rem;
}

.pillar-detail {
  color: var(--gray-400) !important;
  font-size: var(--text-sm) !important;
}

.pillar-animation {
  flex: 1;
  min-width: 0;
  aspect-ratio: 4 / 3;
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 1s ease 0.2s, transform 1s ease 0.2s;
}

.pillar-section.visible .pillar-animation {
  opacity: 1;
  transform: scale(1);
}

.pillar-animation canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* 7b. Page Hero (subpages)
   ============================================= */
.page-hero {
  padding: 10rem 0 5rem;
  background: var(--white);
}

.page-hero-label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--blue-600);
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
}

.page-hero h1 {
  font-size: var(--text-5xl);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  max-width: 700px;
  animation: fadeInUp 0.8s ease forwards;
}

.page-hero-sub {
  font-size: var(--text-lg);
  color: var(--gray-400);
  max-width: 550px;
  line-height: 1.7;
  animation: fadeInUp 0.8s ease 0.15s forwards;
  opacity: 0;
}

/* 7c. Research Areas
   ============================================= */
.research-area {
  padding: 5rem 0;
  background: var(--white);
  overflow: hidden;
}

.research-area--alt {
  background: var(--gray-50);
}

.research-row {
  display: flex;
  align-items: center;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.research-row--reverse {
  flex-direction: row-reverse;
}

.research-text {
  flex: 1;
  min-width: 0;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}

.research-area.visible .research-text {
  opacity: 1;
  transform: translateY(0);
}

.research-number {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--blue-600);
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.research-text h2 {
  margin-bottom: 1.25rem;
  font-size: var(--text-3xl);
}

.research-text p {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--gray-600);
  margin-bottom: 1rem;
}

.research-status {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.35rem 0.85rem;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--blue-600);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: 100px;
  letter-spacing: 0.02em;
}

.research-visual {
  flex: 1;
  min-width: 0;
  aspect-ratio: 4 / 3;
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.9s ease 0.15s, transform 0.9s ease 0.15s;
}

.research-area--alt .research-visual {
  background: var(--white);
}

.research-area.visible .research-visual {
  opacity: 1;
  transform: scale(1);
}

.research-visual canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* 7d. Coming Soon Pages
   ============================================= */
.coming-soon-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--nav-height));
  padding: calc(var(--nav-height) + 2rem) 2rem 4rem;
  background: var(--white);
}

.coming-soon-inner {
  text-align: center;
  max-width: 520px;
  animation: fadeInUp 0.8s ease forwards;
}

.coming-soon-logo {
  width: 120px;
  height: auto;
  margin: 0 auto 2rem;
  opacity: 0.85;
}

.careers-icon {
  margin-bottom: 2rem;
  opacity: 0.7;
}

.coming-soon-inner h1 {
  font-size: var(--text-4xl);
  margin-bottom: 1.25rem;
}

.coming-soon-text {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--gray-600);
  margin-bottom: 2rem;
  max-width: none;
}

.coming-soon-badge {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--blue-600);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: 100px;
  letter-spacing: 0.02em;
  margin-bottom: 2rem;
}

.coming-soon-sub {
  font-size: var(--text-sm);
  color: var(--gray-400);
  max-width: none;
}

.coming-soon-sub a {
  color: var(--blue-600);
  font-weight: 500;
  transition: color 0.2s;
}

.coming-soon-sub a:hover {
  color: var(--blue-700);
}

/* 7e. Contact Page
   ============================================= */
.contact-section {
  padding: 0 0 6rem;
  background: var(--white);
}

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

.contact-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: 2rem;
}

.contact-card-header {
  margin-bottom: 1.25rem;
}

.contact-card h3 {
  margin-bottom: 0.25rem;
}

.contact-role {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--blue-600);
}

.contact-card p {
  font-size: var(--text-sm);
  color: var(--gray-400);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.contact-links {
  display: flex;
  gap: 1rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-600);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.contact-link:hover {
  color: var(--blue-600);
  border-color: var(--blue-600);
  transform: translateY(-1px);
}

.contact-link svg {
  flex-shrink: 0;
}

.contact-location {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-200);
}

.contact-location strong {
  display: block;
  font-size: var(--text-base);
  color: var(--gray-900);
}

.contact-location p {
  font-size: var(--text-sm);
  color: var(--gray-400);
  margin: 0;
}

/* 8. Footer
   ============================================= */
#site-footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 2.5rem 0;
}

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

.footer-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-left span {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--gray-400);
}

.footer-logo {
  height: 28px;
  filter: brightness(0) invert(1);
  opacity: 0.7;
}

.footer-center p {
  font-size: var(--text-sm);
}

.footer-right {
  display: flex;
  gap: 2rem;
}

.footer-right a {
  font-size: var(--text-sm);
  color: var(--gray-400);
  transition: color 0.2s ease;
}

.footer-right a:hover {
  color: var(--white);
}

/* 9. Buttons & Interactive
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s ease;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--blue-600);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--blue-700);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-ghost {
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
  background: var(--white);
}

.btn-ghost:hover {
  color: var(--blue-600);
  border-color: var(--blue-600);
  transform: translateY(-1px);
}

/* 10. Animations & Keyframes
   ============================================= */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content h1 {
  animation: fadeInUp 0.8s ease forwards;
}

.hero-sub {
  animation: fadeInUp 0.8s ease 0.15s forwards;
  opacity: 0;
}

.hero-actions {
  animation: fadeInUp 0.8s ease 0.3s forwards;
  opacity: 0;
}

/* 11. Responsive
   ============================================= */
@media (max-width: 1024px) {
  .nav-wordmark {
    display: none;
  }

  .hero-content h1 {
    font-size: var(--text-5xl);
  }

  .pillar-row {
    gap: 3rem;
  }

  .research-row {
    gap: 3rem;
  }

  .page-hero h1 {
    font-size: var(--text-4xl);
  }
}

@media (max-width: 768px) {
  /* Navigation mobile */
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .nav-links.open {
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a {
    font-size: var(--text-2xl);
    font-weight: 600;
  }

  .nav-links a::after {
    display: none;
  }

  /* Hero mobile */
  .hero-content h1 {
    font-size: var(--text-4xl);
  }

  .hero-sub {
    font-size: var(--text-base);
  }

  .hero-actions {
    flex-direction: column;
    gap: 0.75rem;
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }

  /* Pillar sections mobile */
  .pillar-section {
    padding: 4rem 0;
  }

  .pillar-row,
  .pillar-row--reverse {
    flex-direction: column;
    gap: 2.5rem;
  }

  .pillar-animation {
    width: 100%;
    aspect-ratio: 4 / 3;
  }

  .pillar-text h2 {
    font-size: var(--text-3xl);
  }

  /* Research page mobile */
  .page-hero {
    padding: 8rem 0 3rem;
  }

  .page-hero h1 {
    font-size: var(--text-3xl);
  }

  .research-area {
    padding: 3.5rem 0;
  }

  .research-row,
  .research-row--reverse {
    flex-direction: column;
    gap: 2rem;
  }

  .research-visual {
    width: 100%;
    aspect-ratio: 4 / 3;
  }

  .research-text h2 {
    font-size: var(--text-2xl);
  }

  /* Contact page mobile */
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .coming-soon-inner h1 {
    font-size: var(--text-3xl);
  }

  /* Footer mobile */
  .footer-inner {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .footer-right {
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: var(--text-3xl);
  }

  .container {
    padding: 0 1.25rem;
  }

  .pillar-row {
    padding: 0 1.25rem;
  }
}