:root {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #141414;

  --text-primary: #ffffff;
  --text-secondary: #888888;

  --accent-primary: #ffffff;
  --accent-secondary: #aaaaaa;
  --accent-gradient: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  --accent-glow: rgba(255, 255, 255, 0.05);

  --border-color: #1a1a1a;
  --border-glow: rgba(255, 255, 255, 0.05);

  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Outfit', system-ui, -apple-system, sans-serif;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: #555555;
}

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

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #eaeaea;
  padding: 1rem 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: #000000;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  color: #000000;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #000000;
  transition: width var(--transition-fast);
}

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

.nav-link:hover {
  color: #555555;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1000;
}

.mobile-menu-btn span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 5px 0;
  transition: all 0.3s ease;
}

/* Header & Nav Responsive */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }

  /* Make sure the text on the hamburger is visible if needed */
  .mobile-menu-btn span {
    background-color: var(--bg-primary);
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: left 0.3s ease;
    gap: 2rem;
  }

  .nav-links.nav-active {
    left: 0;
  }

  .nav-link {
    font-size: 1.25rem;
  }

  .btn-header {
    display: none;
    /* Hide standard "get started" button on small screens since it bumps into the hamburger menu */
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: var(--text-secondary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-primary);
}

.btn-header {
  background: #000000;
  color: #ffffff;
}

.btn-header:hover {
  background: #333333;
  color: #ffffff;
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  padding: 12rem 0 6rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at top, rgba(255, 255, 255, 0.03) 0%, transparent 60%);
  z-index: -1;
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(3rem, 6vw, 5rem);
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

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

@media (max-width: 768px) {
  .hero {
    padding: 8rem 0 4rem;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 8vw, 3.5rem);
  }

  .hero-actions {
    flex-direction: column;
    padding: 0 1rem;
  }

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

/* Features/Sections General */
.section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

/* Cards */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 2.5rem;
  transition: all var(--transition-normal);
  position: relative;
}

.card:hover {
  transform: translateY(-2px);
  border-color: #333333;
}

.card-content {
  position: relative;
  z-index: 1;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

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

@media (max-width: 768px) {

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

footer {
  margin-top: auto;
  padding: 4rem 0 2rem;
  background: #ffffff;
  border-top: 1px solid #eaeaea;
  color: #000000;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-column h4 {
  margin-bottom: 1.5rem;
  color: #000000;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: #555555;
}

.footer-links a:hover {
  color: #000000;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #eaeaea;
  color: #555555;
  font-size: 0.9rem;
}

/* Utility Classes */
.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}