/* =========================================================
   PGS 3D - Base styles
   Reset, typography, layout primitives, buttons.
   ========================================================= */

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

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--pgs-font-sans);
  font-size: var(--pgs-body);
  line-height: 1.6;
  color: var(--pgs-text);
  background: var(--pgs-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* clip (not hidden) so it stops horizontal bleed WITHOUT breaking position:sticky */
  overflow-x: clip;
}

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

a { color: var(--pgs-primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

button { font-family: inherit; cursor: pointer; }

/* --- Typography --- */
h1, h2, h3, h4 {
  margin: 0 0 var(--pgs-space-md);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--pgs-text);
}
h1 { font-size: var(--pgs-h1); letter-spacing: -0.035em; }
h2 { font-size: var(--pgs-h2); }
h3 { font-size: var(--pgs-h3); }

p { margin: 0 0 var(--pgs-space-md); }
strong { font-weight: 600; color: var(--pgs-text); }

/* --- Layout --- */
.pgs3d-container {
  width: 100%;
  max-width: var(--pgs-container);
  margin: 0 auto;
  padding: 0 var(--pgs-space-xl);
  position: relative;
  z-index: 2;
}
.pgs3d-container--narrow {
  max-width: var(--pgs-container-text);
}

.pgs3d-section {
  position: relative;
  padding: var(--pgs-space-4xl) 0;
  /* clip (not hidden) so blobs are contained WITHOUT breaking position:sticky in children */
  overflow: clip;
}

.pgs3d-text-center { text-align: center; }

.pgs3d-eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--pgs-primary-dark);
  background: var(--pgs-primary-bg);
  padding: 0.5rem 1rem;
  border-radius: var(--pgs-radius-pill);
  margin-bottom: var(--pgs-space-lg);
}

.pgs3d-section__heading {
  margin-bottom: var(--pgs-space-md);
}
.pgs3d-section__subheading {
  font-size: 1.125rem;
  color: var(--pgs-text-light);
  max-width: 640px;
  margin: 0 auto var(--pgs-space-2xl);
}

/* --- Buttons --- */
.pgs3d-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.6rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--pgs-radius-md);
  border: none;
  text-decoration: none !important;
  transition:
    transform 0.25s var(--pgs-ease-out-quart),
    box-shadow 0.3s var(--pgs-ease-out-quart),
    background 0.25s ease;
  white-space: nowrap;
  position: relative;
  isolation: isolate;
}
.pgs3d-btn--primary {
  background: linear-gradient(180deg, var(--pgs-primary) 0%, var(--pgs-primary-dark) 100%);
  color: #fff;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.25) inset,
    var(--pgs-shadow-2);
}
.pgs3d-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.3) inset,
    var(--pgs-shadow-glow);
}
.pgs3d-btn--ghost {
  background: var(--pgs-glass-bg-strong);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid var(--pgs-glass-border);
  color: var(--pgs-text);
  box-shadow: var(--pgs-shadow-1);
}
.pgs3d-btn--ghost:hover {
  transform: translateY(-2px);
  box-shadow: var(--pgs-shadow-2);
}
.pgs3d-btn--white {
  background: #fff;
  color: var(--pgs-primary-dark);
  box-shadow: var(--pgs-shadow-2);
}
.pgs3d-btn--white:hover {
  transform: translateY(-2px);
  box-shadow: var(--pgs-shadow-3);
}
.pgs3d-btn--large {
  padding: 1.15rem 2rem;
  font-size: 1rem;
}

/* --- Inline links inside glass cards: use darker teal for AA contrast.
   Excludes buttons (.pgs3d-btn) so they keep their own colors. --- */
.pgs3d-card a:not(.pgs3d-btn),
.pgs3d-card a:not(.pgs3d-btn):visited {
  color: var(--pgs-primary-dark);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* --- Site header --- */
.pgs3d-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
  background: var(--pgs-glass-bg);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--pgs-glass-border-dark);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.pgs3d-header.is-scrolled {
  background: rgba(255,255,255,0.85);
  box-shadow: var(--pgs-shadow-1);
}
.pgs3d-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.pgs3d-header__logo {
  display: flex;
  align-items: center;
  text-decoration: none !important;
}
.pgs3d-header__logo img { height: 34px; width: auto; }
.pgs3d-header__nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.9375rem;
}
.pgs3d-header__nav a {
  color: var(--pgs-text);
  font-weight: 500;
  text-decoration: none !important;
  transition: color 0.2s ease;
}
.pgs3d-header__nav a:hover { color: var(--pgs-primary-dark); }
.pgs3d-header__cta {
  padding: 0.6rem 1.1rem;
  background: linear-gradient(180deg, var(--pgs-primary) 0%, var(--pgs-primary-dark) 100%);
  color: #fff !important;
  border-radius: var(--pgs-radius-md);
  box-shadow: var(--pgs-shadow-1);
  transition: transform 0.2s ease, box-shadow 0.3s ease;
}
.pgs3d-header__cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--pgs-shadow-glow);
}

/* --- Mobile nav toggle (hamburger) --- hidden on desktop, shown via responsive.css */
.pgs3d-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 11px 9px;
  background: transparent;
  border: none;
  cursor: pointer;
}
.pgs3d-nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--pgs-text);
  border-radius: 2px;
  transition: transform 0.3s var(--pgs-ease-out-quart), opacity 0.2s ease;
}
.pgs3d-header.nav-open .pgs3d-nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.pgs3d-header.nav-open .pgs3d-nav-toggle span:nth-child(2) { opacity: 0; }
.pgs3d-header.nav-open .pgs3d-nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Footer --- */
.pgs3d-footer {
  background: #0B1220;
  color: rgba(255,255,255,0.7);
  padding: var(--pgs-space-3xl) 0 var(--pgs-space-xl);
}
.pgs3d-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--pgs-space-2xl);
  margin-bottom: var(--pgs-space-2xl);
}
.pgs3d-footer__col h3 {
  color: #fff;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--pgs-space-md);
}
.pgs3d-footer__col a {
  display: block;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  padding: 0.3rem 0;
  font-size: 0.9375rem;
  transition: color 0.2s ease;
}
.pgs3d-footer__col a:hover { color: var(--pgs-primary-light); }
.pgs3d-footer__logo { height: 38px; width: auto; margin-bottom: var(--pgs-space-md); }
.pgs3d-footer__bottom {
  padding-top: var(--pgs-space-lg);
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.5);
  text-align: center;
}

/* --- Focus visible --- */
:focus-visible {
  outline: 3px solid var(--pgs-primary);
  outline-offset: 3px;
  border-radius: 3px;
}