/* ==========================================================================
   ACCELFLOWSYSTEMS DESIGN SYSTEM - GLOBAL & BASE
   ========================================================================== */

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: var(--leading-normal);
  color: var(--ink-900);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

main {
  flex: 1 0 auto;
}

img, svg, video {
  display: block;
  max-width: 100%;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

/* Accessibility Focus Rings */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: var(--ink-950);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
}

.display-title {
  font-size: var(--text-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

h1, .h1 {
  font-size: var(--text-h1);
  letter-spacing: -0.025em;
}

h2, .h2 {
  font-size: var(--text-h2);
  letter-spacing: -0.02em;
}

h3, .h3 {
  font-size: var(--text-h3);
  letter-spacing: -0.015em;
}

h4, .h4 {
  font-size: var(--text-h4);
}

p {
  color: var(--slate-600);
  font-size: var(--text-body);
  line-height: var(--leading-relaxed);
}

p.lead {
  font-size: var(--text-body-lg);
  color: var(--slate-600);
  line-height: var(--leading-relaxed);
}

.text-small {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

.text-micro {
  font-size: var(--text-xs);
  line-height: var(--leading-normal);
}

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

.text-muted {
  color: var(--slate-500);
}

.text-subtle {
  color: var(--slate-400);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: var(--space-3);
}

.eyebrow-slate {
  color: var(--slate-500);
}

/* Container & Layout */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

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

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

.section {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
  position: relative;
}

.section-hero {
  padding-top: var(--space-24);
  padding-bottom: var(--space-20);
  background: radial-gradient(circle at 50% -20%, rgba(49, 92, 255, 0.06) 0%, transparent 60%);
}

.section-dark {
  background-color: var(--ink-950);
  color: var(--white);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--white);
}

.section-dark p {
  color: var(--slate-300);
}

.section-paper {
  background-color: var(--paper);
}

.section-white {
  background-color: var(--white);
  border-top: var(--border-light);
  border-bottom: var(--border-light);
}

.section-header {
  margin-bottom: var(--space-12);
}

.section-header.text-center {
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

/* 12-Column Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-6);
}

.col-12 { grid-column: span 12; }
.col-10 { grid-column: span 10; }
.col-8  { grid-column: span 8; }
.col-7  { grid-column: span 7; }
.col-6  { grid-column: span 6; }
.col-5  { grid-column: span 5; }
.col-4  { grid-column: span 4; }
.col-3  { grid-column: span 3; }
.col-2  { grid-column: span 2; }

/* Utilities */
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Fictional Data Pill / Disclaimer */
.demo-badge-disclaimer {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--slate-100);
  border: var(--border-light);
  color: var(--slate-600);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  user-select: none;
}

.section-dark .demo-badge-disclaimer {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-dark);
  color: var(--slate-300);
}

/* Animations & Transitions */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-on-scroll.is-revealed {
  opacity: 1;
  transform: translateY(0);
}