@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=Instrument+Sans:wght@300;400;500;600&display=swap');

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

:root {
  --teal: #00c9a7;
  --teal-light: #4dffd6;
  --teal-dim: rgba(0,201,167,0.12);
  --teal-glow: rgba(0,201,167,0.08);
  --navy: #0b1120;
  --navy-2: #111b2e;
  --navy-3: #18263d;
  --navy-4: #1f2f47;
  --border: rgba(255,255,255,0.07);
  --border-hover: rgba(0,201,167,0.4);
  --text: #eef2f7;
  --text-muted: rgba(238,242,247,0.55);
  --text-dim: rgba(238,242,247,0.28);
  --serif: 'Syne', system-ui, sans-serif;
  --sans: 'Instrument Sans', system-ui, sans-serif;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-sm: 7px;
  --shadow: 0 24px 60px rgba(0,0,0,0.6);
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* BUTTONS */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 14px 28px;
  background: linear-gradient(135deg, #00c9a7 0%, #4dffd6 100%);
  color: #0b1120;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  letter-spacing: 0.2px;
}

.btn-primary:hover { opacity: 0.88; transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,201,167,0.3); }
.btn-primary.btn-lg { padding: 16px 32px; font-size: 16px; }
.btn-primary.btn-xl { padding: 20px 44px; font-size: 18px; border-radius: var(--radius-lg); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 14px 24px;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--sans);
  font-size: 15px;
  border-radius: var(--radius);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-ghost:hover { color: var(--text); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 28px;
  background: transparent;
  color: var(--text);
  font-family: var(--sans);
  font-weight: 500;
  font-size: 15px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  text-align: center;
}

.btn-outline:hover { border-color: var(--border-hover); color: var(--teal); }

/* SECTION LABELS */
.section-label {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 600;
  margin-bottom: 10px;
}

.section-h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
  margin-bottom: 12px;
}

.section-sub {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 520px;
}

.section-header { margin-bottom: 3rem; }

/* NAV */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: var(--transition);
}

.nav.nav-scrolled {
  background: rgba(11,17,32,0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 800;
  color: var(--teal-light);
  text-decoration: none;
  letter-spacing: -0.3px;
}

.nav-logo span { color: var(--text); opacity: 0.5; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 400;
  transition: var(--transition);
}

.nav-link:hover { color: var(--text); }

.nav-cta {
  padding: 9px 20px;
  background: linear-gradient(135deg, #00c9a7 0%, #4dffd6 100%);
  color: #0b1120;
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: var(--transition);
}

.nav-cta:hover { opacity: 0.88; }

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 0;
  background: rgba(11,17,32,0.98);
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem;
}

.nav-mobile a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
}

.nav-mobile .mobile-cta {
  margin-top: 12px;
  background: linear-gradient(135deg, #00c9a7 0%, #4dffd6 100%);
  color: #0b1120;
  font-weight: 600;
  text-align: center;
  padding: 14px;
  border-radius: var(--radius);
  border: none;
}

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

/* FORM ELEMENTS */
input, select, textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  width: 100%;
  outline: none;
  transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--teal);
  background: rgba(0,201,167,0.04);
}

input::placeholder, textarea::placeholder { color: var(--text-dim); }
select option { background: #18263d; }
label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 500;
}

/* RANGE SLIDER */
input[type=range] {
  -webkit-appearance: none;
  background: rgba(255,255,255,0.1);
  height: 4px;
  border-radius: 2px;
  padding: 0;
  border: none;
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--teal);
  cursor: pointer;
  border: 3px solid var(--navy);
  box-shadow: 0 0 0 1px var(--teal);
}

/* CARD BASE */
.card {
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.fade-up { opacity: 0; transform: translateY(24px); transition: opacity 0.5s ease, transform 0.5s ease; }
.fade-up.visible { opacity: 1; transform: none; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-burger { display: flex; }
  .section-h2 { font-size: 26px; }
}