/* ═══════════════════════════════════════════
   RESET & BASE (ITCSS: Generic + Elements Layer)
   ═══════════════════════════════════════════ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  background: var(--navy-deep);
  color: var(--gray-100);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  width: 100%;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

::selection {
  background: var(--blue-accent);
  color: var(--navy-deep);
}

a {
  color: var(--blue-accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--cyan);
}

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

/* ═══════════════════════════════════════════
   UTILITY
   ═══════════════════════════════════════════ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-container-desktop);
}

.section {
  padding: var(--space-section-desktop) 0;
  position: relative;
}

.section-label {
  font-family: var(--font-mono);
  font-size: var(--fs-section-label);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue-accent);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::before {
  content: '';
  width: 2rem;
  height: 1px;
  background: var(--blue-accent);
}

.section-title {
  font-size: var(--fs-section-title);
  font-weight: 800;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: var(--fs-section-subtitle);
  color: var(--gray-300);
  max-width: 600px;
  line-height: 1.8;
}

.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(14,165,233,0.2), transparent);
}

/* ═══════════════════════════════════════════
   BACKGROUND EFFECTS
   ═══════════════════════════════════════════ */
.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(14, 165, 233, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 165, 233, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.07;
  pointer-events: none;
  z-index: 0;
}

.bg-glow--1 {
  top: -200px;
  right: -100px;
  background: var(--blue-accent);
}

.bg-glow--2 {
  bottom: 30%;
  left: -200px;
  background: var(--cyan);
  opacity: 0.04;
}