/* NTx Ventures — professional, trustworthy, S3-ready */

:root {
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #4a4a4a;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-border: #e5e7eb;
  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --font-size-base: 1.0625rem;
  --line-height: 1.6;
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --max-width: 72rem;
  --radius: 0.375rem;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  position: relative;
  min-height: 100vh;
}

/* Full-page video background */
.page-video-wrap {
  position: fixed;
  inset: 0;
  z-index: 0;
}

.page-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-video-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

img {
  max-width: 100%;
  height: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

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

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: #fff;
}

.logo:hover {
  text-decoration: none;
  color: #93c5fd;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius);
  cursor: pointer;
  font: inherit;
  color: #fff;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  background: rgba(255, 255, 255, 0.1);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-lg);
}

.main-nav a {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.main-nav a:hover {
  color: #93c5fd;
}

@media (max-width: 48rem) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.85);
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    padding: var(--space-md);
    display: none;
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .main-nav li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  }

  .main-nav a {
    display: block;
    padding: var(--space-md);
  }
}

/* Section layout */
.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

.section-intro {
  color: var(--color-text-muted);
  max-width: 42rem;
  margin-bottom: var(--space-2xl);
}

/* Main content above video */
main {
  position: relative;
  z-index: 2;
}

/* Hero */
.hero {
  position: relative;
  min-height: 28rem;
  padding: var(--space-3xl) var(--space-lg);
  text-align: center;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero .hero-tagline,
.hero .hero-sub,
.hero h1 {
  color: #fff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.hero .hero-sub {
  color: rgba(255, 255, 255, 0.9);
}

.hero .btn-primary {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero h1 {
  margin: 0 0 var(--space-md);
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: var(--letter-spacing-tight);
  line-height: 1.15;
}

.hero-tagline {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: var(--letter-spacing-normal);
  color: #93c5fd;
  margin: 0 0 var(--space-sm);
}

.hero-sub {
  color: rgba(255, 255, 255, 0.9);
  max-width: 36rem;
  margin: 0 auto var(--space-xl);
}

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  text-decoration: none;
  transition: background-color 0.2s;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
  text-decoration: none;
}

/* Services */
.services {
  background: rgba(0, 0, 0, 0.35);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.services h2 {
  margin: 0 0 var(--space-md);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: var(--letter-spacing-tight);
  color: #fff;
}

.services .section-intro {
  color: rgba(255, 255, 255, 0.85);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

@media (min-width: 40rem) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 64rem) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .service-card:first-child {
    grid-column: span 2;
  }

  .service-card:nth-child(5) {
    grid-column: span 2;
  }
}

.service-card {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow);
}

.service-card h3 {
  margin: 0 0 var(--space-md);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: #fff;
}

.service-card ul {
  margin: 0;
  padding-left: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
}

.service-card li {
  margin-bottom: var(--space-xs);
}

.service-card li:last-child {
  margin-bottom: 0;
}

/* Positioning / About */
.positioning {
  background: rgba(0, 0, 0, 0.35);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.positioning h2 {
  margin: 0 0 var(--space-md);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: var(--letter-spacing-tight);
  color: #fff;
}

.positioning-lead {
  font-size: 1.125rem;
  margin: 0 0 var(--space-md);
  color: rgba(255, 255, 255, 0.95);
}

.positioning p {
  margin: 0 0 var(--space-md);
  color: rgba(255, 255, 255, 0.9);
  max-width: 52rem;
}

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

/* Contact strip */
.contact-strip {
  background: rgba(0, 0, 0, 0.35);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-strip h2 {
  margin: 0 0 var(--space-md);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: var(--letter-spacing-tight);
  color: #fff;
}

.contact-strip p {
  margin: 0 0 var(--space-sm);
  color: rgba(255, 255, 255, 0.9);
}

.contact-strip a {
  font-weight: 500;
  color: #93c5fd;
}

.contact-strip a:hover {
  color: #bfdbfe;
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 2;
  background: rgba(0, 0, 0, 0.6);
  color: #e5e7eb;
  padding: var(--space-xl) var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.footer-inner p {
  margin: 0 0 var(--space-sm);
}

.footer-inner p:last-child {
  margin-bottom: 0;
}

.footer-brand {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.02em;
}

.site-footer a {
  color: #93c5fd;
}

.site-footer a:hover {
  text-decoration: underline;
}

.footer-copy {
  font-size: 0.875rem;
  color: #9ca3af;
}