/* ═══ COLOR FLOW MAP (from design-spec.theme_context_map) ═══
 * index.html:
 *   nav        → transparent-on-dark (scrolled: solid #0A0F1A)  | links: white
 *   hero       → DARK  (#0A0F1A)     | text: white
 *   metrics-strip → DARK-ALT (#0D1829) | text: white
 *   problem    → DARK  (#0A0F1A)     | text: white
 *   how-it-works → DARK-ALT (#0D1829) | text: white
 *   platform-preview → DARK (#0A0F1A) | text: white
 *   use-cases-strip → DARK-ALT (#0D1829) | text: white
 *   testimonials → DARK (#0A0F1A)    | text: white
 *   cta-bottom → DARK-ALT (#0D1829)  | text: white
 *   footer     → DARK  (#0A0F1A)     | text: white-muted
 *
 * docs/*, blog articles, legal/*:
 *   nav        → solid dark #0A0F1A (forced) | links: white
 *   page       → LIGHT (#F0F4F8) / WHITE (#FFFFFF)
 *
 * Adjacent same-polarity: dark→dark-alt separated by 8px opacity line border
 * ═══════════════════════════════════════════════════════════════ */

/* ─── Reset & Base ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  background: #0A0F1A;
  color: #E8EDF5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.srv-page--light-top {
  background: #F0F4F8;
  color: #0A0F1A;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* ─── CSS Custom Properties ─── */
:root {
  /* Brand palette */
  --srv-brand-primary: #0A0F1A;
  --srv-brand-mid: #0D1829;
  --srv-accent: #00E87A;
  --srv-accent-aa: #00C96A;
  --srv-accent-light: #007A40;
  --srv-accent-aa-light: #007A40;
  --srv-border-light: #DDE3EB;
  --srv-amber: #F59E0B;
  --srv-amber-aa: #D97706;
  --srv-red: #EF4444;

  /* Foreground tokens */
  --srv-fg-dark-primary: #E8EDF5;
  --srv-fg-dark-secondary: #8B9DB8;
  --srv-fg-dark-tertiary: #566478;
  --srv-fg-light-primary: #0A0F1A;
  --srv-fg-light-secondary: #334155;
  --srv-fg-light-muted: #64748B;

  /* Background tokens */
  --srv-bg-dark: #0A0F1A;
  --srv-bg-dark-alt: #0D1829;
  --srv-bg-dark-card: #111827;
  --srv-bg-dark-border: #1E2D42;
  --srv-bg-light: #F0F4F8;
  --srv-bg-light-alt: #E8EDF5;
  --srv-bg-white: #FFFFFF;

  /* Typography */
  --srv-font-body: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --srv-font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;

  /* Spacing */
  --srv-section-pad-y: 80px;
  --srv-section-pad-x: 24px;
  --srv-container-max: 1200px;
  --srv-card-gap: 24px;

  /* Transitions */
  --srv-transition: 0.2s ease;
  --srv-transition-slow: 0.4s ease;

  /* Border radius */
  --srv-radius-sm: 4px;
  --srv-radius-md: 8px;
  --srv-radius-lg: 12px;
  --srv-radius-xl: 16px;
}

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p { line-height: 1.7; }

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

/* ─── Layout helpers ─── */
.srv-container {
  max-width: var(--srv-container-max);
  margin: 0 auto;
  padding: 0 var(--srv-section-pad-x);
}

.srv-section {
  padding: var(--srv-section-pad-y) var(--srv-section-pad-x);
}

.srv-section--dark {
  background: var(--srv-bg-dark);
  color: var(--srv-fg-dark-primary);
}

.srv-section--dark-alt {
  background: var(--srv-bg-dark-alt);
  color: var(--srv-fg-dark-primary);
}

.srv-section--light {
  background: var(--srv-bg-light);
  color: var(--srv-fg-light-primary);
}

.srv-section--white {
  background: var(--srv-bg-white);
  color: var(--srv-fg-light-primary);
}

/* ─── Eyebrow labels ─── */
.srv-eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.srv-section--dark .srv-eyebrow,
.srv-section--dark-alt .srv-eyebrow {
  color: var(--srv-accent-aa);
}

.srv-section--light .srv-eyebrow,
.srv-section--white .srv-eyebrow {
  color: var(--srv-accent-light);
}

/* ─── Buttons ─── */
.srv-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--srv-radius-md);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all var(--srv-transition);
  white-space: nowrap;
  text-decoration: none;
}

.srv-btn--primary {
  background: var(--srv-accent);
  color: #0A0F1A;
}
.srv-btn--primary:hover {
  background: #00FF88;
  transform: translateY(-1px);
}

.srv-btn--outline-dark {
  background: transparent;
  color: var(--srv-fg-dark-primary);
  border: 1px solid var(--srv-bg-dark-border);
}
.srv-btn--outline-dark:hover {
  border-color: var(--srv-accent-aa);
  color: var(--srv-accent-aa);
}

.srv-btn--ghost-dark {
  background: transparent;
  color: var(--srv-fg-dark-secondary);
}
.srv-btn--ghost-dark:hover {
  color: var(--srv-fg-dark-primary);
}

.srv-btn--ghost-light {
  background: transparent;
  color: var(--srv-fg-light-secondary);
}
.srv-btn--ghost-light:hover {
  color: var(--srv-fg-light-primary);
}

.srv-btn--sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.srv-btn--lg {
  padding: 16px 32px;
  font-size: 1rem;
}

/* ─── Grid utilities ─── */
.srv-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--srv-card-gap);
}

.srv-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--srv-card-gap);
}

.srv-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--srv-card-gap);
}

/* ─── Cards ─── */
.srv-card {
  background: var(--srv-bg-dark-card);
  border: 1px solid var(--srv-bg-dark-border);
  border-radius: var(--srv-radius-lg);
  padding: 28px;
}

.srv-card:hover {
  border-color: rgba(0, 232, 122, 0.3);
  transition: border-color var(--srv-transition);
}

.srv-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--srv-radius-md);
  background: rgba(0, 232, 122, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--srv-accent-aa);
  font-size: 1.125rem;
}

.srv-card__title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--srv-fg-dark-primary);
  margin-bottom: 8px;
}

.srv-card__body {
  font-size: 0.9rem;
  color: var(--srv-fg-dark-secondary);
  line-height: 1.65;
}

/* ─── Fade-in animation ─── */
.srv-fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.srv-fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Failsafe: reveal after 1.2s regardless */
@keyframes srv-reveal {
  to { opacity: 1; transform: translateY(0); }
}
.srv-fade-in {
  animation: srv-reveal 0.55s ease 1.2s forwards;
}

/* ─── Mono metric values ─── */
.srv-metric-value {
  font-family: var(--srv-font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--srv-accent-aa);
  letter-spacing: -0.03em;
  line-height: 1;
}

.srv-metric-label {
  font-size: 0.8125rem;
  color: var(--srv-fg-dark-secondary);
  margin-top: 6px;
  line-height: 1.4;
}

/* ─── Status chip/badge ─── */
.srv-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 500;
}

.srv-chip--green {
  background: rgba(0, 232, 122, 0.12);
  color: var(--srv-accent-aa);
}
.srv-chip--amber {
  background: rgba(245, 158, 11, 0.12);
  color: var(--srv-amber);
}
.srv-chip--red {
  background: rgba(239, 68, 68, 0.12);
  color: var(--srv-red);
}

/* ─── Dividers ─── */
.srv-divider {
  height: 1px;
  background: var(--srv-bg-dark-border);
  margin: 0;
}

/* ─── Scrollbar (dark) ─── */
body.srv-page--dark-top ::-webkit-scrollbar {
  width: 8px;
}
body.srv-page--dark-top ::-webkit-scrollbar-track {
  background: var(--srv-bg-dark-alt);
}
body.srv-page--dark-top ::-webkit-scrollbar-thumb {
  background: var(--srv-bg-dark-border);
  border-radius: 4px;
}

/* ─── Cookie Banner ─── */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--srv-bg-dark-card);
  border-top: 1px solid var(--srv-bg-dark-border);
  padding: 16px 24px;
}

.cookie-banner__inner {
  max-width: var(--srv-container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-banner__text {
  font-size: 0.875rem;
  color: var(--srv-fg-dark-secondary);
  flex: 1;
  min-width: 200px;
}

.cookie-banner__text a {
  color: var(--srv-accent-aa);
  text-decoration: underline;
}

.cookie-banner__actions {
  flex-shrink: 0;
}

.cookie-banner__btn {
  padding: 8px 20px;
  border-radius: var(--srv-radius-md);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all var(--srv-transition);
}

.cookie-banner__btn--primary {
  background: var(--srv-accent);
  color: #0A0F1A;
}

.cookie-banner__btn--primary:hover {
  background: #00FF88;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  :root {
    --srv-section-pad-y: 56px;
    --srv-section-pad-x: 20px;
  }
  .srv-grid-2,
  .srv-grid-3,
  .srv-grid-4 {
    grid-template-columns: 1fr;
  }
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  :root {
    --srv-section-pad-x: 16px;
  }
}