/* Binlogic - Global Base Styles & Typography */
body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.6;
  position: relative;
}

/* Background Subtle Technical Grid */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(0, 240, 255, 0.05) 0%, transparent 60%),
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px, 40px 40px;
  pointer-events: none;
  z-index: -1;
}

/* Accessibility Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-primary);
  color: var(--text-inverse);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  z-index: 9999;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
}

/* Focus States */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-sm);
  padding-right: var(--space-sm);
}

.container-narrow {
  max-width: var(--container-narrow);
}

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

h1 { font-size: var(--fs-hero); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-2xl); }
h4 { font-size: var(--fs-xl); font-weight: 600; }
h5 { font-size: var(--fs-lg); font-weight: 600; }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
  font-weight: 600;
}

.section-title {
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  max-width: 720px;
  margin-bottom: var(--space-lg);
}

.text-mono {
  font-family: var(--font-mono);
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 30%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-purple {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.section-lg {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}