/* ─── RESET ─── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --blue: #00a49f;
  --blue-deep: #007a73;
  --blue-light: #CCFBF1;
  --blue-glow: #2DD4BF;
  --dark: #0F172A;
  --dark-mid: #1E293B;
  --slate: #475569;
  --slate-light: #94A3B8;
  --white: #FFFFFF;
  --off-white: #F8FAFC;
  --amber: #F59E0B;
  --red: #EF4444;
  --green: #10B981;
  --violet: #8B5CF6;

  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ─── NAV ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) var(--space-xl);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(255,255,255,0.82);
  border-bottom: 1px solid rgba(0,164,159,0.08);
  transition: box-shadow 0.3s ease;
}
.nav.scrolled {
  box-shadow: 0 1px 24px rgba(15,23,42,0.06);
}
.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--dark);
}
.logo-icon {
  width: 36px;
  height: 36px;
}
.logo-text {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.5px;
}
.logo-text span { color: var(--blue); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  color: var(--slate);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--dark); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--blue);
  color: white !important;
  padding: 10px 20px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
  box-shadow: 0 2px 12px rgba(0,164,159,0.3);
}
.nav-cta:hover {
  background: var(--blue-deep);
  transform: translateY(-1px);
}

/* ─── SECTION HEADINGS ─── */
.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: var(--space-md);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  letter-spacing: -1px;
  line-height: 1.1;
  color: var(--dark);
  margin-bottom: var(--space-lg);
}
.section-subtitle {
  font-size: 17px;
  color: var(--slate);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: var(--space-3xl);
}

/* ─── BUTTONS ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--blue);
  color: white;
  padding: 14px 32px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  transition: all 0.2s;
  box-shadow: 0 4px 20px rgba(0,164,159,0.35);
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
}
.btn-primary:hover {
  background: var(--blue-deep);
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(0,164,159,0.4);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: transparent;
  color: var(--slate);
  padding: 14px 28px;
  border-radius: 100px;
  font-weight: 500;
  font-size: 16px;
  text-decoration: none;
  transition: all 0.2s;
  border: 1.5px solid rgba(71,85,105,0.2);
  cursor: pointer;
  font-family: var(--font-body);
}
.btn-secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
}

/* ─── FOOTER ─── */
.footer {
  padding: var(--space-3xl) var(--space-xl) var(--space-xl);
  border-top: 1px solid rgba(15,23,42,0.06);
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2xl);
}
.footer-brand p {
  font-size: 13px;
  color: var(--slate-light);
  margin-top: var(--space-sm);
  max-width: 280px;
  line-height: 1.6;
}
.footer-links {
  display: flex;
  gap: var(--space-3xl);
}
.footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--slate-light);
  margin-bottom: var(--space-md);
}
.footer-col ul {
  list-style: none;
}
.footer-col li { margin-bottom: var(--space-sm); }
.footer-col a {
  font-size: 14px;
  color: var(--slate);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--blue); }
.footer-bottom {
  max-width: 1120px;
  margin: var(--space-2xl) auto 0;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(15,23,42,0.04);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--slate-light);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .footer-inner { flex-direction: column; }
  .footer-links { flex-direction: column; gap: var(--space-xl); }
  .footer-bottom { flex-direction: column; gap: var(--space-sm); text-align: center; }
}