/* ═══ COLOR FLOW MAP (from design-spec.theme_context_map) ═══
 * index.html:       nav→transparent-on-dark | dark hero | dark-alt problem | light how-it-works | dark platform | light testimonials | dark-alt compliance | dark CTA
 * platform.html:    nav→transparent-on-dark | dark hero | light capabilities | cream integration | dark CTA
 * solutions/*.html: nav→transparent-on-dark | dark hero | light content | dark CTA
 * pricing.html:     nav→solid-navy-forced   | light hero | white tiers | light FAQ | cream CTA
 * about.html:       nav→solid-navy-forced   | light hero | dark mission | light team | cream CTA
 * contact.html:     nav→solid-navy-forced   | light form
 * blog/*.html:      nav→solid-navy-forced   | light article header | white body
 * login/index.html: nav→transparent-on-dark | dark split panel (nested white auth-panel)
 * login/signup.html:nav→transparent-on-dark | dark split panel (nested white auth-panel)
 * login/reset.html: nav→solid-navy-forced   | light centered card
 * status.html:      nav→solid-navy-forced   | light status grid
 * legal/*.html:     nav→solid-navy-forced   | white legal content
 *
 * dark-top pages: body bg = #0E1B2C so transparent nav blends with hero
 * light-top pages: nav forced solid #0E1B2C so logo-light is visible
 * ═══════════════════════════════════════════════════════════════ */

/* ── Custom Properties ── */
:root {
  /* Brand palette */
  --gps-navy: #0E1B2C;
  --gps-navy-alt: #152438;
  --gps-navy-mid: #1C2E42;
  --gps-green: #22C55E;
  --gps-green-aa: #15803D;
  --gps-amber: #F59E0B;

  /* Foreground tokens */
  --gps-fg-dark-primary: #F0F6FF;
  --gps-fg-dark-secondary: #94A3B8;
  --gps-fg-light-primary: #0E1B2C;
  --gps-fg-light-secondary: #475569;

  /* Background tokens */
  --gps-bg-dark: #0E1B2C;
  --gps-bg-dark-alt: #152438;
  --gps-bg-dark-mid: #1C2E42;
  --gps-bg-light: #F0F4F8;
  --gps-bg-white: #FFFFFF;
  --gps-bg-cream: #F7F9FC;

  /* Grid lines */
  --gps-grid-on-dark: rgba(255,255,255,0.06);
  --gps-grid-on-light: rgba(14,27,44,0.08);

  /* Borders */
  --gps-border-light: rgba(14,27,44,0.12);
  --gps-border-dark: rgba(255,255,255,0.10);

  /* Typography */
  --gps-font-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --gps-font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* Spacing */
  --gps-section-pad: 80px;
  --gps-container-max: 1200px;
  --gps-radius-card: 8px;
  --gps-radius-btn: 6px;
  --gps-radius-badge: 4px;

  /* Nav height */
  --gps-nav-h: 64px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--gps-font-primary);
  font-size: 16px;
  line-height: 1.65;
  color: var(--gps-fg-light-primary);
  background: var(--gps-bg-white);
  -webkit-font-smoothing: antialiased;
}

/* Dark-top body bg: transparent nav blends with dark hero */
body.gps-page--dark-top {
  background: var(--gps-bg-dark);
}

/* ── Images ── */
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
address { font-style: normal; }

/* ── Container ── */
.gps-container {
  width: 100%;
  max-width: var(--gps-container-max);
  margin: 0 auto;
  padding: 0 80px;
}
@media (max-width: 1024px) { .gps-container { padding: 0 48px; } }
@media (max-width: 640px)  { .gps-container { padding: 0 24px; } }

/* ── Section backgrounds ── */
.gps-section--dark     { background: var(--gps-bg-dark); }
.gps-section--dark-alt { background: var(--gps-bg-dark-alt); }
.gps-section--dark-mid { background: var(--gps-bg-dark-mid); }
.gps-section--light    { background: var(--gps-bg-light); }
.gps-section--white    { background: var(--gps-bg-white); }
.gps-section--cream    { background: var(--gps-bg-cream); }

/* ── Section padding ── */
.gps-section {
  padding: var(--gps-section-pad) 0;
}
@media (max-width: 1024px) { .gps-section { padding: 56px 0; } }
@media (max-width: 640px)  { .gps-section { padding: 40px 0; } }

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 { line-height: 1.2; font-weight: 600; }

.gps-eyebrow {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
/* Eyebrow on dark sections */
.gps-section--dark     .gps-eyebrow,
.gps-section--dark-alt .gps-eyebrow,
.gps-section--dark-mid .gps-eyebrow { color: var(--gps-green); }
/* Eyebrow on light sections */
.gps-section--light .gps-eyebrow,
.gps-section--white .gps-eyebrow,
.gps-section--cream .gps-eyebrow { color: var(--gps-green-aa); }

.gps-section-headline {
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  font-weight: 600;
  line-height: 1.15;
}
.gps-section--dark     .gps-section-headline,
.gps-section--dark-alt .gps-section-headline,
.gps-section--dark-mid .gps-section-headline { color: var(--gps-fg-dark-primary); }
.gps-section--light .gps-section-headline,
.gps-section--white .gps-section-headline,
.gps-section--cream .gps-section-headline { color: var(--gps-fg-light-primary); }

.gps-section-lead {
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 600px;
  margin-top: 16px;
}
.gps-section--dark     .gps-section-lead,
.gps-section--dark-alt .gps-section-lead,
.gps-section--dark-mid .gps-section-lead { color: var(--gps-fg-dark-secondary); }
.gps-section--light .gps-section-lead,
.gps-section--white .gps-section-lead,
.gps-section--cream .gps-section-lead { color: var(--gps-fg-light-secondary); }

/* ── Buttons ── */
.gps-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--gps-radius-btn);
  border: 2px solid transparent;
  transition: background 0.18s, color 0.18s, border-color 0.18s, box-shadow 0.18s;
  white-space: nowrap;
  text-decoration: none;
}
/* Primary: efficiency green bg, dark text for AA contrast */
.gps-btn--primary {
  background: var(--gps-green);
  color: #0A1A0F;
  border-color: var(--gps-green);
}
.gps-btn--primary:hover {
  background: #1EA84E;
  border-color: #1EA84E;
  box-shadow: 0 0 0 3px rgba(34,197,94,0.3);
}
/* Secondary: dark navy bg, white text */
.gps-btn--secondary {
  background: var(--gps-navy);
  color: var(--gps-fg-dark-primary);
  border-color: var(--gps-navy);
}
.gps-btn--secondary:hover {
  background: var(--gps-navy-alt);
}
/* Outline dark (on light sections) */
.gps-btn--outline-dark {
  background: transparent;
  color: var(--gps-navy);
  border-color: var(--gps-navy);
}
.gps-btn--outline-dark:hover {
  background: var(--gps-navy);
  color: var(--gps-fg-dark-primary);
}
/* Outline light (on dark sections) */
.gps-btn--outline-light {
  background: transparent;
  color: var(--gps-fg-dark-primary);
  border-color: rgba(240,246,255,0.4);
}
.gps-btn--outline-light:hover {
  background: rgba(240,246,255,0.08);
  border-color: var(--gps-fg-dark-primary);
}
/* Ghost on dark */
.gps-btn--ghost-dark {
  background: transparent;
  color: var(--gps-fg-dark-secondary);
  border-color: transparent;
  padding: 11px 16px;
}
.gps-btn--ghost-dark:hover {
  color: var(--gps-fg-dark-primary);
  background: rgba(240,246,255,0.06);
}
/* Ghost on light */
.gps-btn--ghost-light {
  background: transparent;
  color: var(--gps-fg-light-secondary);
  border-color: transparent;
  padding: 11px 16px;
}
.gps-btn--ghost-light:hover {
  color: var(--gps-fg-light-primary);
  background: rgba(14,27,44,0.06);
}

/* ── NAV ── */
.gps-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--gps-nav-h);
  transition: background 0.25s, box-shadow 0.25s;
}
/* Default: transparent, sits over dark hero */
.gps-nav { background: transparent; }

/* Scrolled state: solid dark */
.gps-nav--scrolled {
  background: var(--gps-navy);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

/* Light-top pages: nav immediately solid */
body.gps-page--light-top .gps-nav {
  background: var(--gps-navy);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

.gps-nav__inner {
  max-width: var(--gps-container-max);
  margin: 0 auto;
  padding: 0 80px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}
@media (max-width: 1024px) { .gps-nav__inner { padding: 0 48px; } }
@media (max-width: 640px)  { .gps-nav__inner { padding: 0 24px; } }

.gps-nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}
.gps-nav__logo img {
  height: 32px;
  width: auto;
  max-width: 160px;
}

.gps-nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
  flex: 1;
}

.gps-nav__link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gps-fg-dark-secondary);
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
  text-decoration: none;
  background: none;
  border: none;
  font-family: inherit;
  cursor: pointer;
}
.gps-nav__link:hover {
  color: var(--gps-fg-dark-primary);
  background: rgba(255,255,255,0.06);
}

.gps-nav__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* Dropdown */
.gps-nav__dropdown {
  position: relative;
}
.gps-nav__dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: var(--gps-navy-alt);
  border: 1px solid var(--gps-border-dark);
  border-radius: 8px;
  padding: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  z-index: 100;
}
.gps-nav__dropdown:hover .gps-nav__dropdown-menu,
.gps-nav__dropdown:focus-within .gps-nav__dropdown-menu {
  display: block;
}
.gps-nav__dropdown-menu a {
  display: block;
  padding: 8px 12px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gps-fg-dark-secondary);
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
  text-decoration: none;
}
.gps-nav__dropdown-menu a:hover {
  color: var(--gps-fg-dark-primary);
  background: rgba(255,255,255,0.06);
}

/* Mobile hamburger */
.gps-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
}
.gps-nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gps-fg-dark-primary);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.gps-nav__mobile-menu {
  display: none;
  position: fixed;
  top: var(--gps-nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gps-navy);
  padding: 32px 24px;
  overflow-y: auto;
  z-index: 999;
}
.gps-nav__mobile-menu.is-open { display: block; }
.gps-nav__mobile-menu a,
.gps-nav__mobile-menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 14px 0;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--gps-fg-dark-secondary);
  border: none;
  border-bottom: 1px solid var(--gps-border-dark);
  background: none;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
}
.gps-nav__mobile-menu a:hover,
.gps-nav__mobile-menu button:hover {
  color: var(--gps-fg-dark-primary);
}
.gps-nav__mobile-menu .gps-btn {
  width: 100%;
  justify-content: center;
  margin-top: 24px;
  border: none;
  display: flex;
}

@media (max-width: 900px) {
  .gps-nav__links { display: none; }
  .gps-nav__actions .gps-btn { display: none; }
  .gps-nav__hamburger { display: flex; }
}

/* ── FOOTER ── */
.gps-footer {
  background: var(--gps-bg-dark);
  padding: 56px 0 32px;
}
.gps-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--gps-border-dark);
}
@media (max-width: 768px) {
  .gps-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 480px) {
  .gps-footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
.gps-footer__col-heading {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gps-fg-dark-primary);
  margin-bottom: 16px;
}
.gps-footer__logo {
  height: 28px;
  width: auto;
  margin-bottom: 16px;
}
.gps-footer__desc {
  font-size: 0.875rem;
  color: var(--gps-fg-dark-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}
.gps-footer__contact {
  font-size: 0.8125rem;
  color: var(--gps-fg-dark-secondary);
  line-height: 1.8;
}
.gps-footer__contact a {
  color: var(--gps-fg-dark-secondary);
  transition: color 0.15s;
}
.gps-footer__contact a:hover { color: var(--gps-green); }
.gps-footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.gps-footer__links a {
  font-size: 0.875rem;
  color: var(--gps-fg-dark-secondary);
  transition: color 0.15s;
}
.gps-footer__links a:hover { color: var(--gps-green); }
.gps-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  gap: 16px;
  flex-wrap: wrap;
}
.gps-footer__copy {
  font-size: 0.8125rem;
  color: var(--gps-fg-dark-secondary);
}
.gps-footer__legal-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.gps-footer__legal-links a {
  font-size: 0.8125rem;
  color: var(--gps-fg-dark-secondary);
  transition: color 0.15s;
}
.gps-footer__legal-links a:hover { color: var(--gps-green); }

/* ── COOKIE BANNER ── */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2000;
  background: var(--gps-navy-alt);
  border-top: 1px solid var(--gps-border-dark);
  padding: 0;
}
.cookie-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--gps-container-max);
  margin: 0 auto;
  padding: 16px 80px;
  flex-wrap: wrap;
}
@media (max-width: 1024px) { .cookie-banner__inner { padding: 16px 48px; } }
@media (max-width: 640px)  { .cookie-banner__inner { padding: 16px 24px; } }
.cookie-banner__text {
  font-size: 0.875rem;
  color: var(--gps-fg-dark-secondary);
  flex: 1;
  min-width: 200px;
}
.cookie-banner__text a {
  color: var(--gps-green);
  text-decoration: underline;
}
.cookie-banner__actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}
.cookie-banner__btn {
  padding: 8px 18px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--gps-radius-btn);
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, color 0.15s;
}
.cookie-banner__btn--primary {
  background: var(--gps-green);
  color: #0A1A0F;
  border-color: var(--gps-green);
}
.cookie-banner__btn--primary:hover { background: #1EA84E; }
.cookie-banner__btn--secondary {
  background: transparent;
  color: var(--gps-fg-dark-secondary);
  border-color: var(--gps-border-dark);
}
.cookie-banner__btn--secondary:hover {
  background: rgba(255,255,255,0.05);
  color: var(--gps-fg-dark-primary);
}

/* ── Utility ── */
.gps-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;
}
.gps-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--gps-radius-badge);
  background: rgba(34,197,94,0.12);
  color: var(--gps-green-aa);
  letter-spacing: 0.04em;
}
.gps-section--dark .gps-tag,
.gps-section--dark-alt .gps-tag { background: rgba(34,197,94,0.15); color: var(--gps-green); }

/* Metric numbers (JetBrains Mono) */
.gps-metric {
  font-family: var(--gps-font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--gps-green);
}
.gps-metric--amber { color: var(--gps-amber); }

/* ── Fade-in animation (with failsafe) ── */
.gps-fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.gps-fade-in.is-visible {
  opacity: 1;
  transform: none;
}