/* Shared Dossier Secure Enterprise foundation. Light is the sales default. */
:root {
  color-scheme: light;
  --ds-deep-navy: #0a0e1a;
  --ds-cobalt: #0c294d;
  --ds-cobalt-muted: #526b84;
  --ds-gold: #c9a227;
  --ds-gold-deep: #c9a227;
  --ds-gold-soft: #e7d9a9;
  --ds-petrol: #0e6267;
  --ds-bg: #fbf8f2;
  --ds-sand: #f2e8d6;
  --ds-surface: #fffdfa;
  --ds-card: #f2e8d6;
  --ds-ink: #0c294d;
  --ds-muted: #566b80;
  --ds-line: rgba(12, 41, 77, .15);
  --ds-shadow: 0 20px 56px rgba(12, 41, 77, .08);
  --ds-shadow-raised: 0 27px 72px rgba(12, 41, 77, .13);
  --ds-success: #2f8068;
  --ds-success-soft: #e5f1eb;
  --ds-attention: #a76e19;
  --ds-radius-card: 2px;
  --ds-radius-frame: 2px;
  --ds-motion-fast: 180ms;
  --ds-motion-base: 420ms;
  --ds-motion-ease: cubic-bezier(.2, .75, .2, 1);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ds-bg: #080f1f;
  --ds-sand: #0b1730;
  --ds-surface: #0e1d3d;
  --ds-card: #102347;
  --ds-ink: #f7f5ef;
  --ds-muted: #b8c4d5;
  --ds-line: rgba(195, 158, 79, .23);
  --ds-shadow: 0 24px 68px rgba(2, 8, 22, .44);
  --ds-shadow-raised: 0 30px 78px rgba(2, 8, 22, .60);
  --ds-success-soft: #103c3b;
}

.site-header,
#header {
  border-top: 4px solid var(--ds-petrol);
}

.button {
  border-color: var(--ds-gold);
  background: var(--ds-gold);
  box-shadow: 0 12px 27px color-mix(in srgb, var(--ds-gold-deep) 25%, transparent);
}

.button:hover,
.button:focus-visible {
  box-shadow: 0 17px 35px color-mix(in srgb, var(--ds-gold-deep) 32%, transparent);
}

.button,
.theme-toggle {
  transition-duration: var(--ds-motion-fast);
  transition-timing-function: var(--ds-motion-ease);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--ds-line);
  border-radius: 999px;
  color: var(--ds-ink);
  background: color-mix(in srgb, var(--ds-surface) 88%, transparent);
  cursor: pointer;
  box-shadow: 0 5px 16px rgba(16, 42, 95, .05);
  transition-property: border-color, background, transform;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  border-color: var(--ds-gold);
  background: var(--ds-surface);
  transform: translateY(-1px);
}

.theme-toggle__track {
  position: relative;
  display: block;
  width: 18px;
  height: 18px;
  overflow: hidden;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

.theme-toggle__track::after {
  position: absolute;
  top: -3px;
  right: -5px;
  width: 13px;
  height: 13px;
  content: "";
  border-radius: 50%;
  background: var(--ds-surface);
  transition: transform .22s ease, background .22s ease;
}

:root[data-theme="dark"] .theme-toggle__track::after { transform: translate(-5px, 4px); }

/* Primitives for the landing blocks that follow in phase 2. */
.ds-section-card,
.ds-outcome-card,
.ds-screenshot-frame {
  border: 1px solid var(--ds-line);
  box-shadow: var(--ds-shadow);
}

.ds-section-card {
  background: var(--ds-card);
  padding: clamp(24px, 3vw, 42px);
  border-radius: var(--ds-radius-card);
  transition: transform var(--ds-motion-base) var(--ds-motion-ease), box-shadow var(--ds-motion-base) var(--ds-motion-ease), border-color var(--ds-motion-fast) ease;
}

.ds-section-card:hover {
  border-color: color-mix(in srgb, var(--ds-gold) 48%, var(--ds-line));
  box-shadow: var(--ds-shadow-raised);
  transform: translateY(-4px);
}

.ds-proof-trigger {
  display: grid;
  gap: 12px;
  padding: 24px 0;
  border-top: 2px solid var(--ds-gold);
  color: var(--ds-ink);
}

.ds-proof-trigger__eyebrow {
  color: var(--ds-gold-deep);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.ds-outcome-card { padding: 24px; border-radius: 2px; background: var(--ds-surface); }
.ds-outcome-card[data-state="passed"] { border-left: 3px solid var(--ds-success); }
.ds-outcome-card[data-state="attention"] { border-left: 3px solid var(--ds-attention); }

.ds-comparison-row {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr) minmax(0, .9fr);
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--ds-line);
}

.ds-screenshot-frame {
  background: var(--ds-surface);
  overflow: hidden;
  border-radius: var(--ds-radius-frame);
  transition: transform var(--ds-motion-base) var(--ds-motion-ease), box-shadow var(--ds-motion-base) var(--ds-motion-ease);
}

.ds-screenshot-frame:hover {
  box-shadow: var(--ds-shadow-raised);
  transform: translateY(-4px);
}

.ds-screenshot-frame__bar {
  height: 32px;
  border-bottom: 1px solid var(--ds-line);
  background: var(--ds-card);
}

.ds-screenshot-frame__bar::before {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin: 12px 0 0 14px;
  content: "";
  border-radius: 50%;
  background: var(--ds-gold);
  box-shadow: 14px 0 0 color-mix(in srgb, var(--ds-gold) 66%, var(--ds-card)), 28px 0 0 color-mix(in srgb, var(--ds-gold) 36%, var(--ds-card));
}

.ds-screenshot-frame__media {
  display: grid;
  aspect-ratio: 16 / 9;
  place-items: center;
  overflow: hidden;
  background: var(--ds-card);
}

.ds-screenshot-frame__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Internal foundation preview. It exercises shared components without adding a landing block. */
.ds-foundation {
  min-height: 100vh;
  margin: 0;
  color: var(--ds-ink);
  background: var(--ds-bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

.ds-foundation__header {
  position: sticky;
  top: 0;
  z-index: 2;
  border-top: 4px solid var(--ds-petrol);
  border-bottom: 1px solid var(--ds-line);
  background: color-mix(in srgb, var(--ds-bg) 91%, transparent);
  backdrop-filter: blur(16px);
}

.ds-foundation__nav,
.ds-foundation__shell {
  width: min(1720px, calc(100vw - 96px));
  margin: 0 auto;
}

.ds-foundation__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 24px;
}

.ds-foundation__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ds-foundation__brand {
  color: var(--ds-ink);
  font-size: 14px;
  font-weight: 850;
  letter-spacing: .08em;
  text-decoration: none;
}

.ds-foundation__brand small {
  display: block;
  margin-top: 3px;
  color: var(--ds-gold);
  font-size: 9px;
  letter-spacing: .23em;
}

.ds-foundation__main { padding: clamp(56px, 7vw, 120px) 0; }

.ds-foundation__intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: end;
  margin-bottom: clamp(44px, 6vw, 82px);
}

.ds-foundation__intro h1,
.ds-foundation__intro h2,
.ds-foundation__component h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 600;
  letter-spacing: -.035em;
  line-height: 1.04;
}

.ds-foundation__intro h1 { max-width: 780px; font-size: clamp(45px, 5.5vw, 82px); }
.ds-foundation__intro p { max-width: 540px; margin: 0; color: var(--ds-muted); font-size: 18px; line-height: 1.65; }

.ds-foundation__eyebrow,
.ds-foundation__component-label {
  display: block;
  margin-bottom: 13px;
  color: var(--ds-gold-deep);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.ds-foundation__component-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: clamp(60px, 8vw, 120px);
}

.ds-foundation__component h2 { font-size: 31px; }
.ds-foundation__component p { margin: 15px 0 0; color: var(--ds-muted); line-height: 1.65; }

.ds-foundation__outcomes {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.ds-foundation__comparison { margin-top: 22px; }
.ds-foundation__comparison strong { color: var(--ds-ink); }
.ds-foundation__comparison span { color: var(--ds-muted); }

.ds-foundation__screens { margin-top: clamp(52px, 8vw, 118px); }
.ds-foundation__screens-head { max-width: 730px; margin-bottom: 30px; }
.ds-foundation__screens-head h2 { font-size: clamp(38px, 4vw, 64px); }
.ds-foundation__screens-head p { margin: 16px 0 0; color: var(--ds-muted); line-height: 1.65; }

.ds-screenshot-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 2vw, 32px);
}

.ds-screenshot-frame__caption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 18px 18px;
  color: var(--ds-ink);
  font-size: 14px;
  font-weight: 750;
}

.ds-screenshot-frame__caption small { color: var(--ds-muted); font-size: 12px; font-weight: 650; }

@media (max-width: 820px) {
  .ds-foundation__nav,
  .ds-foundation__shell { width: min(100% - 34px, 760px); }
  .ds-foundation__intro,
  .ds-foundation__component-grid,
  .ds-screenshot-grid { grid-template-columns: 1fr; }
  .ds-foundation__intro { align-items: start; }
}

.ds-enter {
  opacity: 0;
  animation: ds-enter var(--ds-motion-base) var(--ds-motion-ease) forwards;
}

@keyframes ds-enter {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Motion only draws attention to a verifiable proof transition. */
.ds-proof-trigger.is-emphasized::after {
  width: 100%;
  height: 2px;
  content: "";
  background: linear-gradient(90deg, var(--ds-gold), var(--ds-petrol));
  transform-origin: left;
  animation: ds-proof-trace 900ms ease-out both;
}

@keyframes ds-proof-trace { from { transform: scaleX(0); } to { transform: scaleX(1); } }

@media (max-width: 680px) {
  .ds-comparison-row { grid-template-columns: 1fr; gap: 7px; }
}

@media (prefers-reduced-motion: reduce) {
  .theme-toggle,
  .theme-toggle__track::after,
  .ds-section-card,
  .ds-screenshot-frame { transition: none; }
  .ds-proof-trigger.is-emphasized::after { animation: none; }
  .ds-enter { opacity: 1; animation: none; }
}