:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-accent: #ff7a00;
  --color-disabled-bg: #e0e0e0;
  --color-disabled-text: #666666;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --radius: 8px;
  --max-width: 1200px;
}

html {
  box-sizing: border-box;
  font-size: 16px;
}
*, *:before, *:after {
  box-sizing: inherit;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-bg);
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar img.logo {
  height: 40px;
  width: auto;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}
.nav-links {
  display: flex;
  gap: var(--spacing-sm);
}
.nav-links a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
}
.nav-links a:hover {
  color: var(--color-accent);
}
.nav-icons {
  display: flex;
  gap: var(--spacing-sm);
}
.nav-icons a {
  color: currentColor;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}
.nav-icons a svg {
  width: 24px;
  height: 24px;
}
.nav-icons a:hover {
  opacity: 0.8;
}

/* Hero Section */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: 1fr;
  align-items: center;
}
.hero-text h1 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.1;
  margin: 0 0 var(--spacing-sm);
}
.hero-text h1 .headline-line {
  display: block;
}
.hero-text p {
  font-size: 1.125rem;
  margin: 0;
}
.hero img {
  width: 100%;
  height: auto;
  display: block;
  max-height: 40vh;
  object-fit: contain;
  justify-self: end;
}

/* Feature Cards */
.features {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: 1fr;
}
@media (min-width: 600px) {
  .hero {
    grid-template-columns: 1fr 1fr;
  }
  .features {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 900px) {
  .hero {
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
  }
  .features {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-height: 900px) {
  .hero img {
    max-height: 35vh;
  }
}

.card {
  background: var(--color-bg);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 12px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.08);
}
.card h2 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.75rem;
  margin: 0 0 var(--spacing-sm);
  text-align: center;
}
.card p {
  flex-grow: 1;
  margin-bottom: var(--spacing-md);
}
.card .btn {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.card .btn.primary {
  background: var(--color-accent);
  color: #fff;
}
.card .btn.primary:hover {
  background: #e06900;
}
.card .btn:disabled,
.card .btn.disabled {
  background: var(--color-disabled-bg);
  color: var(--color-disabled-text);
  cursor: not-allowed;
}

/* Accessibility: focus outlines */
body.using-mouse a:focus,
body.using-mouse button:focus {
  outline: none;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}