/**
 * SAN WebTechnology — Global Base & Typography Styles V4
 * Strictly Native HTML5/CSS3 — No External Frameworks
 */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-family-base);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--san-ink);
  background-color: var(--san-paper);
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(69, 212, 131, 0.07) 0%, transparent 40%),
    radial-gradient(circle at 85% 15%, rgba(8, 102, 255, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(146, 117, 255, 0.03) 0%, transparent 50%);
  background-attachment: fixed;
  overflow-x: hidden;
  cursor: default; /* Enforce standard browser cursor — NO custom cursor dots */
  min-height: 100vh;
}

/* Ensure interactive elements use native pointer */
a, button, input[type="button"], input[type="submit"], [role="button"], summary {
  cursor: pointer;
}

/* Accessibility Focus Ring */
:focus-visible {
  outline: 2px solid var(--san-blue);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

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

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* Headings — Centered Editorial Direction */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  color: var(--san-ink-rich);
  font-weight: var(--fw-bold);
  line-height: 1.22;
  letter-spacing: -0.025em;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-2xl) auto;
  position: relative;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8125rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--san-blue-deep);
  background: var(--san-blue-soft);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(8, 102, 255, 0.15);
  margin-bottom: var(--space-sm);
  box-shadow: var(--shadow-micro);
}

.section-eyebrow.green {
  color: var(--san-green-deep);
  background: var(--san-green-soft);
  border-color: rgba(69, 212, 131, 0.25);
}

.section-eyebrow.multicolor {
  background: linear-gradient(135deg, rgba(8,102,255,0.08), rgba(69,212,131,0.08));
  border: 1px solid rgba(8,102,255,0.2);
  color: var(--san-ink-rich);
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.65rem);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.03em;
}

.section-title span.highlight-green {
  color: var(--san-green-deep);
  background: linear-gradient(135deg, var(--san-green-deep), var(--san-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-title span.highlight-blue {
  color: var(--san-blue);
  background: linear-gradient(135deg, var(--san-blue), #2563eb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  color: var(--san-muted);
  line-height: 1.6;
}

/* Sections */
section {
  padding-top: clamp(var(--space-2xl), 6vw, var(--space-4xl));
  padding-bottom: clamp(var(--space-2xl), 6vw, var(--space-4xl));
  position: relative;
}

/* Links */
a {
  color: var(--san-blue);
  text-decoration: none;
  transition: color var(--motion-fast);
}

a:hover {
  color: var(--san-blue-deep);
}

/* Images & Media */
img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 11px 22px;
  font-size: 0.9375rem;
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: all var(--motion-base);
  text-decoration: none;
  line-height: 1.25;
  white-space: nowrap;
}

.btn-primary {
  background: var(--san-green-deep);
  color: var(--san-white);
  box-shadow: 0 4px 14px rgba(22, 138, 85, 0.25);
}

.btn-primary:hover {
  background: #117346;
  color: var(--san-white);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(22, 138, 85, 0.35);
}

.btn-blue {
  background: var(--san-blue);
  color: var(--san-white);
  box-shadow: 0 4px 14px rgba(8, 102, 255, 0.25);
}

.btn-blue:hover {
  background: var(--san-blue-deep);
  color: var(--san-white);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(8, 102, 255, 0.35);
}

.btn-glass {
  background: var(--glass-bg-base);
  backdrop-filter: var(--glass-blur-md);
  -webkit-backdrop-filter: var(--glass-blur-md);
  color: var(--san-ink);
  border-color: var(--san-border);
  box-shadow: var(--shadow-micro);
}

.btn-glass:hover {
  background: var(--san-white);
  border-color: var(--san-blue);
  color: var(--san-blue-deep);
  transform: translateY(-1px);
  box-shadow: var(--shadow-card);
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.8125rem;
}

/* Screenreader text */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
  .container, .container-narrow {
    padding-left: var(--container-padding-mobile);
    padding-right: var(--container-padding-mobile);
  }

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

/* Accessibility Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}