@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --font-sans: 'Inter', -apple-system, 'Helvetica Neue', sans-serif;
  --white: #FFFFFF;
  --black: #000000;
  --gray-bg: #F5F5F7;
  --text-primary: #1D1D1F;
  --text-secondary: #86868B;
  --text-tertiary: #6E6E73;
  --accent: #0056b3;
  --accent-hover: #003d82;
  --accent-press: #002d62;
  --border: #D2D2D7;
  --nav-blur: rgba(255,255,255,0.8);
  --nav-border: rgba(0,0,0,0.08);

  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  --space-section: 120px;

  --max-width: 980px;
  --max-width-wide: 1200px;
  --nav-height: 48px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.022em;
  color: var(--text-primary);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--accent); color: var(--white); }

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.1;
  color: var(--text-primary);
}

h1 { font-size: 56px; letter-spacing: -0.025em; }
h2 { font-size: 40px; letter-spacing: -0.02em; }
h3 { font-size: 28px; letter-spacing: -0.015em; }
h4 { font-size: 21px; font-weight: 500; }
h5 { font-size: 17px; font-weight: 600; }

p { margin-bottom: var(--space-md); color: var(--text-secondary); }
p:last-child { margin-bottom: 0; }

a { color: var(--accent); transition: color 0.2s; }
a:hover { color: var(--accent-hover); }

.subhead {
  font-size: 21px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0;
  color: var(--text-secondary);
  max-width: 640px;
}

.label {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-wide {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-section) 0;
}

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

.section-dark {
  background: var(--black);
  color: var(--white);
}
.section-dark h1, .section-dark h2, .section-dark h3 { color: var(--white); }
.section-dark p, .section-dark .subhead { color: rgba(255,255,255,0.7); }

/* ============================================
   NAVBAR (Apple-style translucent)
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--nav-blur);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--nav-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.logo img { height: 28px; width: auto; }

.nav-list {
  display: flex;
  gap: 0;
  align-items: center;
  height: 100%;
}

.nav-list a {
  display: flex;
  align-items: center;
  padding: 0 var(--space-md);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  height: 100%;
  transition: color 0.2s;
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--text-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--white);
  background: var(--accent);
  border-radius: 20px;
  transition: background 0.2s;
}
.nav-cta:hover {
  background: var(--accent-hover);
  color: var(--white);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--text-primary);
  transition: transform 0.2s, opacity 0.2s;
}

/* ============================================
   HERO (Apple-style)
   ============================================ */
.hero {
  padding: 160px 0 80px;
  background: var(--white);
  text-align: center;
  overflow: hidden;
}

.hero h1 {
  margin-bottom: var(--space-md);
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.hero .subhead {
  margin: 0 auto var(--space-xl);
  max-width: 680px;
}

.hero-actions {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  align-items: center;
}

.hero-actions a {
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.hero-actions .arrow {
  display: inline-block;
  transition: transform 0.2s;
}

.hero-actions a:hover .arrow {
  transform: translateX(4px);
}

.hero-media {
  margin-top: var(--space-xxl);
  display: flex;
  justify-content: center;
}

.hero-media-placeholder {
  width: 100%;
  max-width: 800px;
  height: 400px;
  background: linear-gradient(135deg, #f0f0f2 0%, #e8e8ed 100%);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: var(--text-tertiary);
  letter-spacing: -0.02em;
  font-weight: 300;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.01em;
  border-radius: 30px;
  transition: background 0.2s, color 0.2s, opacity 0.2s;
  text-align: center;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline:hover {
  background: rgba(0,113,227,0.08);
  color: var(--accent);
}

.btn-outline-light {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.4);
}
.btn-outline-light:hover {
  border-color: var(--white);
  color: var(--white);
  background: rgba(255,255,255,0.1);
}

.btn-link {
  background: none;
  color: var(--accent);
  padding: 0;
  font-size: 17px;
  font-weight: 400;
}
.btn-link:hover {
  opacity: 0.8;
}

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

/* ============================================
   CARDS / BENTO GRID
   ============================================ */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-lg);
}

.bento-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.bento-card {
  background: var(--white);
  border-radius: 18px;
  padding: var(--space-xl);
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid rgba(0,0,0,0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}

.bento-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
}

.bento-card h4 {
  margin-bottom: var(--space-sm);
}

.bento-card p {
  font-size: 15px;
  color: var(--text-secondary);
}

.bento-card .icon {
  font-size: 32px;
  margin-bottom: var(--space-md);
}

.bento-card.bento-wide {
  grid-column: span 2;
}

.bento-card.bento-dark {
  background: var(--black);
  color: var(--white);
  border-color: rgba(255,255,255,0.1);
}
.bento-card.bento-dark h4 { color: var(--white); }
.bento-card.bento-dark p { color: rgba(255,255,255,0.6); }

/* Service cards */
.service-card {
  padding: var(--space-xl);
  border-radius: 18px;
  background: var(--white);
  border: 1px solid rgba(0,0,0,0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.service-card .icon {
  font-size: 28px;
  margin-bottom: var(--space-md);
}

.service-card h4 {
  margin-bottom: var(--space-sm);
}

.service-card p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

/* ============================================
   VALUES / STATS
   ============================================ */
.values-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-xxl);
}

.value-item {
  text-align: center;
  padding: var(--space-xl);
}

.value-item .num {
  font-size: 48px;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.value-item h5 {
  margin-bottom: var(--space-xs);
}

.value-item p {
  font-size: 15px;
  color: var(--text-secondary);
}

/* ============================================
   PAGE HEADER
   ============================================ */
.page-header {
  padding: 120px 0 48px;
  text-align: center;
  background: var(--white);
}

.page-header h1 {
  margin-bottom: var(--space-sm);
}

.page-header .subhead {
  margin: 0 auto;
}

/* ============================================
   REFERENCE LIST
   ============================================ */
.ref-list {
  border-top: 1px solid var(--border);
}

.ref-item {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}

.ref-item .num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-bg);
  font-size: 14px;
  font-weight: 600;
  border-radius: 50%;
  color: var(--text-primary);
}

.ref-item .text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.ref-item .text strong {
  color: var(--text-primary);
}

/* ============================================
   CONTACT
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xxl);
}

.contact-info-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  align-items: flex-start;
}

.contact-info-item .icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-bg);
  border-radius: 50%;
  font-size: 12px;
  margin-top: 2px;
}

.contact-info-item .clabel {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 2px;
}

.contact-info-item .cvalue {
  font-size: 17px;
  color: var(--text-primary);
}

/* Form */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--gray-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 16px;
  font-family: var(--font-sans);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.15);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group .required { color: #FF3B30; }

.form-group.checkbox {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.form-group.checkbox input { width: auto; margin-top: 3px; }

.form-group.checkbox label {
  margin-bottom: 0;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 400;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--gray-bg);
  color: var(--text-tertiary);
  padding: var(--space-xxl) 0;
  font-size: 13px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.footer-col h5 {
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--text-tertiary);
  padding: 4px 0;
  transition: color 0.2s;
}

.footer-col a:hover { color: var(--text-primary); }

.footer-col p { font-size: 13px; color: var(--text-tertiary); }

.footer-bottom {
  border-top: 1px solid var(--border);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: 12px;
  color: var(--text-tertiary);
  max-width: var(--max-width-wide);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.footer-logo { margin-bottom: var(--space-md); }
.footer-logo img { height: 24px; width: auto; }

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ============================================
   UTILITY
   ============================================ */
.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-xxl { margin-top: var(--space-xxl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-500 { max-width: 500px; }
.max-w-600 { max-width: 600px; }
.max-w-640 { max-width: 640px; }
.p-0 { padding: 0; }
.items-start { align-items: start; }
.space-y-lg > * + * { margin-top: var(--space-lg); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  h1 { font-size: 48px; }
  h2 { font-size: 36px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .bento-grid { grid-template-columns: 1fr; }
  .bento-card.bento-wide { grid-column: span 1; }
}

@media (max-width: 768px) {
  h1 { font-size: 36px; }
  h2 { font-size: 28px; }
  h3 { font-size: 24px; }
  .subhead { font-size: 18px; }

  .section { padding: 64px 0; }
  .hero { padding: 120px 0 48px; }
  .hero .subhead { font-size: 18px; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }

  .nav-toggle { display: flex; }

  .nav-list {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--nav-blur);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--nav-border);
    height: auto;
    padding: var(--space-xs) 0;
  }

  .nav-list.open { display: flex; }

  .nav-list a {
    height: 44px;
    padding: 0 var(--space-lg);
    border-bottom: 1px solid var(--nav-border);
  }

  .nav-list a:last-child { border-bottom: none; }

  .nav-cta { display: none; }

  .page-header { padding: 100px 0 32px; }

  .hero-actions { flex-direction: column; gap: var(--space-sm); }

  .hero-media-placeholder { height: 240px; font-size: 24px; }
}

@media (max-width: 480px) {
  h1 { font-size: 30px; }
  h2 { font-size: 24px; }

  .container { padding: 0 var(--space-md); }
  .container-wide { padding: 0 var(--space-md); }

  .bento-card { padding: var(--space-lg); }
  .service-card { padding: var(--space-lg); }
}