/* ==========================================================================
   S&S FACILITIES — DESIGN SYSTEM
   Pattern: Enterprise Gateway · Style: Trust & Authority
   --------------------------------------------------------------------------
   1. Tokens (palettes A/B/C + light/dark)
   2. Reset & base
   3. Typography
   4. Layout primitives
   5. Components
   6. Motion
   7. Utilities
   ========================================================================== */

/* ==========================================================================
   1. TOKENS
   ========================================================================== */

:root {
  /* ---- Brand constants (identical across palettes) ---- */
  --brand-navy:      #002E5B;
  --brand-navy-deep: #001B36;
  --brand-amber:     #FFAD18;
  --brand-cyan:      #00D4D8;

  /* ---- Logo dot ramp (signature motif) ---- */
  --dot-1: #0A5C63;
  --dot-2: #00A3A8;
  --dot-3: #00E5E8;

  /* ---- Type families ---- */
  --font-display: "Lexend", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body:    "Source Sans 3", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "Cascadia Code", monospace;

  /* ---- Fluid type scale (1.250 minor third, clamped) ---- */
  --text-2xs:  0.6875rem;
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-md:   1.0625rem;
  --text-lg:   clamp(1.125rem, 0.4vw + 1.02rem, 1.25rem);
  --text-xl:   clamp(1.375rem, 0.8vw + 1.18rem, 1.625rem);
  --text-2xl:  clamp(1.625rem, 1.4vw + 1.30rem, 2.125rem);
  --text-3xl:  clamp(2.000rem, 2.4vw + 1.40rem, 2.875rem);
  --text-4xl:  clamp(2.500rem, 3.6vw + 1.60rem, 4.000rem);
  --text-5xl:  clamp(3.000rem, 5.2vw + 1.70rem, 5.250rem);

  --leading-tight:   1.1;
  --leading-snug:    1.28;
  --leading-normal:  1.6;
  --leading-relaxed: 1.75;

  --tracking-tight:  -0.022em;
  --tracking-snug:   -0.012em;
  --tracking-wide:    0.06em;
  --tracking-widest:  0.16em;

  /* ---- Spacing (4pt rhythm) ---- */
  --sp-1: 0.25rem;  --sp-2: 0.5rem;  --sp-3: 0.75rem; --sp-4: 1rem;
  --sp-5: 1.25rem;  --sp-6: 1.5rem;  --sp-8: 2rem;    --sp-10: 2.5rem;
  --sp-12: 3rem;    --sp-16: 4rem;   --sp-20: 5rem;   --sp-24: 6rem;

  --section-y:      clamp(3.5rem, 7vw, 7.5rem);
  --gutter:         clamp(1.25rem, 4vw, 3rem);
  --container:      1240px;
  --container-wide: 1440px;
  --measure:        68ch;

  /* ---- Radius ---- */
  --r-xs: 4px;  --r-sm: 8px;   --r-md: 12px; --r-lg: 18px;
  --r-xl: 26px; --r-2xl: 36px; --r-full: 999px;

  /* ---- Elevation (navy-tinted, never neutral black) ---- */
  --e-1: 0 1px 2px rgba(0,27,54,.06), 0 1px 3px rgba(0,27,54,.05);
  --e-2: 0 2px 4px rgba(0,27,54,.05), 0 4px 12px rgba(0,27,54,.07);
  --e-3: 0 4px 8px rgba(0,27,54,.05), 0 12px 28px rgba(0,27,54,.10);
  --e-4: 0 8px 16px rgba(0,27,54,.06), 0 24px 56px rgba(0,27,54,.14);

  /* ---- Motion ---- */
  --dur-1: 120ms; --dur-2: 200ms; --dur-3: 320ms; --dur-4: 480ms; --dur-5: 720ms;
  --ease-out:    cubic-bezier(.16,1,.3,1);
  --ease-in:     cubic-bezier(.7,0,.84,0);
  --ease-spring: cubic-bezier(.34,1.56,.64,1);
  --ease-smooth: cubic-bezier(.4,0,.2,1);

  /* ---- Z-index ladder ---- */
  --nav-h: 76px;

  /* ---- Z-index ladder ---- */
  --z-base: 0; --z-raised: 10; --z-sticky: 40; --z-nav: 100;
  --z-overlay: 500; --z-modal: 600; --z-toast: 900;
}

/* --------------------------------------------------------------------------
   PALETTE A — "Midnight Authority"   (default / recommended)
   Navy foundation · Amber decisive CTA · Teal technical accent
   -------------------------------------------------------------------------- */
:root,
[data-palette="a"] {
  --c-primary:        #002E5B;
  --c-primary-hover:  #063F76;
  --c-primary-soft:   #E7EEF6;
  --c-primary-ink:    #001B36;
  --c-on-primary:     #FFFFFF;

  --c-accent:         #FFAD18;
  --c-accent-hover:   #F09B00;
  --c-accent-soft:    #FFF4DE;
  --c-on-accent:      #002E5B;

  --c-secondary:      #00A3A8;
  --c-secondary-ink:  #0A6F73;
  --c-secondary-soft: #E0F7F7;

  --c-bg:             #FFFFFF;
  --c-bg-subtle:      #F5F8FC;
  --c-bg-sunken:      #EDF2F8;
  --c-surface:        #FFFFFF;
  --c-surface-raised: #FFFFFF;
  --c-inverse:        #001B36;
  --c-inverse-soft:   #062B4E;

  --c-fg:             #0B1B2B;
  --c-fg-muted:       #4A5D72;
  --c-fg-subtle:      #5A6C80;
  --c-on-inverse:     #EAF1F8;
  --c-on-inverse-mut: #9DB2C9;

  --c-border:         #DDE5EE;
  --c-border-strong:  #C3D0DF;
  --c-border-inverse: rgba(255,255,255,.14);

  --c-success: #127034; --c-success-soft: #E7F6EC;
  --c-warning: #9E4708; --c-warning-soft: #FDF2E2;
  --c-danger:  #C22F2F; --c-danger-soft:  #FCEBEB;
  --c-ring:    #FFAD18;

  --grad-hero: radial-gradient(120% 90% at 12% 8%,  #063F76 0%, transparent 55%),
               radial-gradient(100% 80% at 88% 96%, #0A5C63 0%, transparent 58%),
               linear-gradient(158deg, #002E5B 0%, #001B36 100%);
  --grad-accent: linear-gradient(135deg, #FFCB5C 0%, #FFAD18 100%);
  --grad-rule:   linear-gradient(90deg, var(--c-accent) 0%, var(--c-secondary) 100%);
}

/* --------------------------------------------------------------------------
   PALETTE B — "Signal Teal"
   Leans into the logo's cyan ramp · Amber reserved strictly for CTA
   -------------------------------------------------------------------------- */
[data-palette="b"] {
  --c-primary:        #063B45;
  --c-primary-hover:  #0A5C63;
  --c-primary-soft:   #E2F4F4;
  --c-primary-ink:    #02222A;
  --c-on-primary:     #FFFFFF;

  --c-accent:         #00C2C7;
  --c-accent-hover:   #00A3A8;
  --c-accent-soft:    #DDF7F8;
  --c-on-accent:      #02222A;

  --c-secondary:      #FFAD18;
  --c-secondary-ink:  #8A5B00;
  --c-secondary-soft: #FFF4DE;

  --c-bg:             #FFFFFF;
  --c-bg-subtle:      #F3F9F9;
  --c-bg-sunken:      #E8F3F3;
  --c-surface:        #FFFFFF;
  --c-surface-raised: #FFFFFF;
  --c-inverse:        #02222A;
  --c-inverse-soft:   #063B45;

  --c-fg:             #08222A;
  --c-fg-muted:       #416069;
  --c-fg-subtle:      #4F6C76;
  --c-on-inverse:     #E6F6F7;
  --c-on-inverse-mut: #94BCC1;

  --c-border:         #D6E8E9;
  --c-border-strong:  #B6D5D7;
  --c-border-inverse: rgba(255,255,255,.14);

  --c-success: #127034; --c-success-soft: #E7F6EC;
  --c-warning: #9E4708; --c-warning-soft: #FDF2E2;
  --c-danger:  #C22F2F; --c-danger-soft:  #FCEBEB;
  --c-ring:    #00C2C7;

  --grad-hero: radial-gradient(120% 90% at 12% 8%,  #0A5C63 0%, transparent 55%),
               radial-gradient(100% 80% at 88% 96%, #00A3A8 0%, transparent 45%),
               linear-gradient(158deg, #063B45 0%, #02222A 100%);
  --grad-accent: linear-gradient(135deg, #45E2E6 0%, #00C2C7 100%);
  --grad-rule:   linear-gradient(90deg, var(--c-accent) 0%, var(--c-secondary) 100%);
}

/* --------------------------------------------------------------------------
   PALETTE C — "Graphite Corporate"
   Muted, restrained, procurement-committee safe
   -------------------------------------------------------------------------- */
[data-palette="c"] {
  --c-primary:        #1F3A54;
  --c-primary-hover:  #2C506F;
  --c-primary-soft:   #ECF0F4;
  --c-primary-ink:    #14273A;
  --c-on-primary:     #FFFFFF;

  /* Accent darkened from #C2762A to clear 4.5:1 against white button labels */
  --c-accent:         #A65E19;
  --c-accent-hover:   #8F4E10;
  --c-accent-soft:    #F8EFE3;
  --c-on-accent:      #FFFFFF;

  --c-secondary:      #4E7B8C;
  --c-secondary-ink:  #3A5D6B;
  --c-secondary-soft: #EAF1F4;

  --c-bg:             #FFFFFF;
  --c-bg-subtle:      #F6F7F9;
  --c-bg-sunken:      #EEF1F4;
  --c-surface:        #FFFFFF;
  --c-surface-raised: #FFFFFF;
  --c-inverse:        #14273A;
  --c-inverse-soft:   #22394F;

  --c-fg:             #16212D;
  --c-fg-muted:       #52606E;
  --c-fg-subtle:      #5F6C79;
  --c-on-inverse:     #EDF1F5;
  --c-on-inverse-mut: #A3B2C1;

  --c-border:         #DFE3E9;
  --c-border-strong:  #C5CCD5;
  --c-border-inverse: rgba(255,255,255,.13);

  --c-success: #127034; --c-success-soft: #E7F6EC;
  --c-warning: #9E4708; --c-warning-soft: #FDF2E2;
  --c-danger:  #C22F2F; --c-danger-soft:  #FCEBEB;
  --c-ring:    #A65E19;

  --grad-hero: radial-gradient(120% 90% at 12% 8%,  #2C506F 0%, transparent 55%),
               radial-gradient(100% 80% at 88% 96%, #4E7B8C 0%, transparent 50%),
               linear-gradient(158deg, #1F3A54 0%, #14273A 100%);
  --grad-accent: linear-gradient(135deg, #C98240 0%, #A65E19 100%);
  --grad-rule:   linear-gradient(90deg, var(--c-accent) 0%, var(--c-secondary) 100%);
}

/* --------------------------------------------------------------------------
   DARK MODE — tonal remap, not inversion. Layers over the active palette.
   -------------------------------------------------------------------------- */
[data-theme="dark"] {
  --c-bg:             #061524;
  --c-bg-subtle:      #0A1E31;
  --c-bg-sunken:      #04101C;
  --c-surface:        #0D2438;
  --c-surface-raised: #123049;
  --c-inverse:        #04101C;
  --c-inverse-soft:   #0A1E31;

  --c-fg:             #E8F0F8;
  --c-fg-muted:       #A2B6CB;
  --c-fg-subtle:      #7E92A8;
  --c-on-inverse:     #E8F0F8;
  --c-on-inverse-mut: #9DB2C9;

  --c-primary:        #5AA5E6;
  --c-primary-hover:  #7CBAF0;
  --c-primary-soft:   #10314D;
  --c-on-primary:     #04101C;

  --c-accent:         #FFC152;
  --c-accent-hover:   #FFD689;
  --c-accent-soft:    #33260A;
  --c-on-accent:      #04101C;

  --c-secondary:      #35CFD4;
  --c-secondary-ink:  #35CFD4;
  --c-secondary-soft: #0A3436;

  --c-border:         rgba(255,255,255,.10);
  --c-border-strong:  rgba(255,255,255,.20);

  --c-success: #4ADE80; --c-success-soft: #0C2B18;
  --c-warning: #FBBF24; --c-warning-soft: #33260A;
  --c-danger:  #F87171; --c-danger-soft:  #331313;

  --e-1: 0 1px 2px rgba(0,0,0,.40);
  --e-2: 0 2px 8px rgba(0,0,0,.45);
  --e-3: 0 8px 24px rgba(0,0,0,.50);
  --e-4: 0 20px 56px rgba(0,0,0,.58);
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: var(--leading-normal);
  color: var(--c-fg);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100dvh;
  transition: background var(--dur-3) var(--ease-smooth),
              color      var(--dur-3) var(--ease-smooth);
}

img, svg, video, canvas { display: block; max-width: 100%; height: auto; }
img { background: var(--c-bg-sunken); }

button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }

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

ul, ol { list-style: none; padding: 0; }

:focus-visible {
  outline: 3px solid var(--c-ring);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}
:focus:not(:focus-visible) { outline: none; }

::selection { background: var(--c-accent); color: var(--c-on-accent); }

/* Scrollbar */
* { scrollbar-width: thin; scrollbar-color: var(--c-border-strong) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--c-bg-sunken); }
::-webkit-scrollbar-thumb {
  background: var(--c-border-strong);
  border-radius: var(--r-full);
  border: 2px solid var(--c-bg-sunken);
}
::-webkit-scrollbar-thumb:hover { background: var(--c-fg-subtle); }

/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--c-fg);
  text-wrap: balance;
}

.t-display { font-size: var(--text-5xl); font-weight: 700; }
.t-h1      { font-size: var(--text-4xl); font-weight: 700; }
.t-h2      { font-size: var(--text-3xl); font-weight: 600; }
.t-h3      { font-size: var(--text-2xl); font-weight: 600; letter-spacing: var(--tracking-snug); }
.t-h4      { font-size: var(--text-xl);  font-weight: 600; letter-spacing: var(--tracking-snug); line-height: var(--leading-snug); }
.t-h5      { font-size: var(--text-lg);  font-weight: 600; letter-spacing: 0; line-height: var(--leading-snug); }

.t-lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--c-fg-muted);
  max-width: var(--measure);
  text-wrap: pretty;
}
.t-body   { font-size: var(--text-md);  line-height: var(--leading-relaxed); color: var(--c-fg-muted); max-width: var(--measure); text-wrap: pretty; }
.t-small  { font-size: var(--text-sm);  line-height: var(--leading-normal);  color: var(--c-fg-subtle); }
.t-mono   { font-family: var(--font-mono); font-size: var(--text-sm); font-variant-numeric: tabular-nums; }

/* Eyebrow — the signature three-dot motif lifted from the logo */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--c-secondary-ink);
}
.eyebrow::before {
  content: "";
  width: 34px; height: 8px;
  flex: none;
  background:
    radial-gradient(circle 3px at 3px  4px, var(--dot-1) 99%, transparent),
    radial-gradient(circle 4px at 15px 4px, var(--dot-2) 99%, transparent),
    radial-gradient(circle 4px at 29px 4px, var(--dot-3) 99%, transparent);
}
.eyebrow--on-dark { color: var(--brand-cyan); }
.eyebrow--amber   { color: var(--c-accent); }

/* Section heading with gradient underscore rule */
.section-head { max-width: 46rem; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-head__title { margin-top: var(--sp-4); }
.section-head__title::after {
  content: "";
  display: block;
  width: 68px; height: 3px;
  margin-top: var(--sp-5);
  border-radius: var(--r-full);
  background: var(--grad-rule);
}
.section-head--center .section-head__title::after { margin-inline: auto; }
.section-head__body { margin-top: var(--sp-5); }
.section-head--center .section-head__body { margin-inline: auto; }

/* ==========================================================================
   4. LAYOUT PRIMITIVES
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide { max-width: var(--container-wide); }
.container--narrow { max-width: 860px; }

.section { padding-block: var(--section-y); }
.section--subtle  { background: var(--c-bg-subtle); }
.section--sunken  { background: var(--c-bg-sunken); }
.section--inverse { background: var(--c-inverse); color: var(--c-on-inverse); }
.section--inverse h1, .section--inverse h2,
.section--inverse h3, .section--inverse h4 { color: var(--c-on-inverse); }
.section--inverse .t-lead,
.section--inverse .t-body { color: var(--c-on-inverse-mut); }

.grid { display: grid; gap: var(--sp-6); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(288px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(232px, 1fr)); }

.split {
  display: grid;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split--5-7 { grid-template-columns: 5fr 7fr; }
  .split--7-5 { grid-template-columns: 7fr 5fr; }
}

.stack       { display: flex; flex-direction: column; gap: var(--sp-4); }
.stack--lg   { gap: var(--sp-8); }
.cluster     { display: flex; flex-wrap: wrap; gap: var(--sp-3); align-items: center; }
.cluster--lg { gap: var(--sp-5); }

/* ==========================================================================
   5. COMPONENTS
   ========================================================================== */

/* ---------- 5.1 Buttons ---------- */
.btn {
  --btn-bg: var(--c-primary);
  --btn-fg: var(--c-on-primary);
  --btn-bd: var(--c-primary);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: 48px;
  padding: 0 var(--sp-6);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1.5px solid var(--btn-bd);
  border-radius: var(--r-full);
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  white-space: nowrap;
  transition: transform var(--dur-2) var(--ease-spring),
              box-shadow var(--dur-2) var(--ease-out),
              background var(--dur-2) var(--ease-smooth),
              border-color var(--dur-2) var(--ease-smooth),
              color var(--dur-2) var(--ease-smooth);
}
/* Sheen sweep on hover */
.btn::after {
  content: "";
  position: absolute; inset: 0;
  z-index: -1;
  background: linear-gradient(115deg, transparent 30%, rgba(255,255,255,.26) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform var(--dur-5) var(--ease-out);
}
.btn:hover::after { transform: translateX(120%); }
.btn:hover  { transform: translateY(-2px); box-shadow: var(--e-3); }
.btn:active { transform: translateY(0) scale(.98); transition-duration: var(--dur-1); }
.btn[disabled], .btn[aria-disabled="true"] {
  opacity: .45; cursor: not-allowed; transform: none; box-shadow: none;
}
.btn[disabled]::after { display: none; }

.btn--primary   { --btn-bg: var(--c-primary); --btn-fg: var(--c-on-primary); --btn-bd: var(--c-primary); }
.btn--primary:hover { --btn-bg: var(--c-primary-hover); --btn-bd: var(--c-primary-hover); }

.btn--accent    { --btn-bg: var(--c-accent); --btn-fg: var(--c-on-accent); --btn-bd: var(--c-accent); }
.btn--accent:hover { --btn-bg: var(--c-accent-hover); --btn-bd: var(--c-accent-hover); }

.btn--outline   { --btn-bg: transparent; --btn-fg: var(--c-primary); --btn-bd: var(--c-border-strong); }
.btn--outline:hover { --btn-bg: var(--c-primary-soft); --btn-bd: var(--c-primary); }

.btn--ghost     { --btn-bg: transparent; --btn-fg: var(--c-fg); --btn-bd: transparent; }
.btn--ghost:hover { --btn-bg: var(--c-bg-sunken); box-shadow: none; }

.btn--on-dark   { --btn-bg: transparent; --btn-fg: #fff; --btn-bd: rgba(255,255,255,.34); }
.btn--on-dark:hover { --btn-bg: #fff; --btn-fg: var(--c-primary-ink); --btn-bd: #fff; }

/* Still visually compact (12px label, tight padding) but meets the 44px floor */
.btn--sm  { min-height: 44px; padding: 0 var(--sp-5); font-size: var(--text-xs); }
.btn--lg  { min-height: 56px; padding: 0 var(--sp-8); font-size: var(--text-base); }
.btn--block { width: 100%; }
.btn__icon { width: 18px; height: 18px; flex: none; transition: transform var(--dur-2) var(--ease-out); }
.btn:hover .btn__icon--arrow { transform: translateX(3px); }

/* Loading state */
.btn.is-loading { color: transparent; pointer-events: none; }
.btn.is-loading::before {
  content: "";
  position: absolute; top: 50%; left: 50%;
  width: 18px; height: 18px; margin: -9px 0 0 -9px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  color: var(--btn-fg);
  animation: spin 640ms linear infinite;
}

/* Text link with animated underline */
.link-arrow {
  position: relative;
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-family: var(--font-display);
  font-size: var(--text-sm); font-weight: 600;
  color: var(--c-primary);
  padding-bottom: 2px;
  background-image: linear-gradient(var(--c-accent), var(--c-accent));
  background-size: 0% 2px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--dur-3) var(--ease-out), color var(--dur-2) var(--ease-smooth);
}
/* Hit area expanded to 44px without moving the underline (WCAG 2.5.8) */
.link-arrow::before {
  content: "";
  position: absolute;
  left: 0; right: 0;
  top: 50%;
  height: 44px;
  transform: translateY(-50%);
}
.link-arrow:hover { background-size: 100% 2px; }
.link-arrow svg { width: 16px; height: 16px; transition: transform var(--dur-2) var(--ease-out); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- 5.2 Badges & pills ---------- */
.badge {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-3);
  font-family: var(--font-display);
  font-size: var(--text-2xs); font-weight: 600;
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  border-radius: var(--r-full);
  background: var(--c-primary-soft);
  color: var(--c-primary);
}
.badge--accent    { background: var(--c-accent-soft);    color: var(--c-warning); }
.badge--secondary { background: var(--c-secondary-soft); color: var(--c-secondary-ink); }
.badge--success   { background: var(--c-success-soft);   color: var(--c-success); }
.badge--glass {
  background: rgba(255,255,255,.10);
  color: #fff;
  border: 1px solid rgba(255,255,255,.18);
  backdrop-filter: blur(10px);
}
.badge__dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* ---------- 5.3 Cards ---------- */
.card {
  position: relative;
  display: flex; flex-direction: column;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform var(--dur-3) var(--ease-out),
              box-shadow var(--dur-3) var(--ease-out),
              border-color var(--dur-3) var(--ease-smooth);
}
.card__body { padding: var(--sp-6); display: flex; flex-direction: column; gap: var(--sp-3); flex: 1; }
.card__title { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 600; line-height: var(--leading-snug); }
.card__text  { font-size: var(--text-sm); line-height: var(--leading-relaxed); color: var(--c-fg-muted); }
.card__foot  { margin-top: auto; padding-top: var(--sp-4); }

.card--interactive { cursor: pointer; }
.card--interactive:hover {
  transform: translateY(-6px);
  box-shadow: var(--e-4);
  border-color: transparent;
}
/* Accent rule that sweeps in from the left edge on hover */
.card--interactive::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--grad-rule);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur-3) var(--ease-out);
  z-index: 2;
}
.card--interactive:hover::before { transform: scaleY(1); }

/* Media card — image with duotone scrim */
.card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--c-bg-sunken);
}
.card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--dur-5) var(--ease-out), filter var(--dur-4) var(--ease-smooth);
}
.card:hover .card__media img { transform: scale(1.07); }
.card__media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,27,54,.72) 0%, rgba(0,27,54,.12) 45%, transparent 75%);
  opacity: .85;
  transition: opacity var(--dur-3) var(--ease-smooth);
}
.card:hover .card__media::after { opacity: .6; }
.card__media-label {
  position: absolute; left: var(--sp-5); bottom: var(--sp-4);
  z-index: 2; color: #fff;
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg);
  text-shadow: 0 2px 12px rgba(0,0,0,.4);
}

/* Icon tile inside cards */
.icon-tile {
  display: grid; place-items: center;
  width: 54px; height: 54px;
  flex: none;
  border-radius: var(--r-md);
  background: var(--c-primary-soft);
  color: var(--c-primary);
  transition: background var(--dur-3) var(--ease-smooth),
              color var(--dur-3) var(--ease-smooth),
              transform var(--dur-3) var(--ease-spring);
}
.icon-tile svg { width: 26px; height: 26px; }
.card--interactive:hover .icon-tile {
  background: var(--c-accent);
  color: var(--c-on-accent);
  transform: rotate(-6deg) scale(1.06);
}
.icon-tile--accent    { background: var(--c-accent-soft);    color: var(--c-warning); }
.icon-tile--secondary { background: var(--c-secondary-soft); color: var(--c-secondary-ink); }
.icon-tile--glass {
  background: rgba(255,255,255,.10);
  color: var(--brand-cyan);
  border: 1px solid rgba(255,255,255,.16);
  backdrop-filter: blur(10px);
}

/* Glass card — for use over the dark hero only */
.card--glass {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.14);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  color: #fff;
}
.card--glass .card__text { color: rgba(255,255,255,.74); }

/* ---------- 5.4 Stat / metric ---------- */
.stat { display: flex; flex-direction: column; gap: var(--sp-1); }
.stat__value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1;
  letter-spacing: var(--tracking-tight);
  color: var(--c-primary);
  font-variant-numeric: tabular-nums;
}
.stat__value em { font-style: normal; color: var(--c-accent); }
.stat__label {
  font-size: var(--text-sm);
  color: var(--c-fg-subtle);
  letter-spacing: 0.01em;
}
.stat--on-dark .stat__value { color: #fff; }
.stat--on-dark .stat__label { color: var(--c-on-inverse-mut); }

/* ---------- 5.5 Forms ---------- */
.field { display: flex; flex-direction: column; gap: var(--sp-2); }
.field__label {
  font-family: var(--font-display);
  font-size: var(--text-sm); font-weight: 600;
  color: var(--c-fg);
}
.field__label .req { color: var(--c-danger); margin-left: 2px; }
.field__hint  { font-size: var(--text-xs); color: var(--c-fg-subtle); }
.field__error {
  display: none;
  align-items: center; gap: var(--sp-2);
  font-size: var(--text-xs); color: var(--c-danger);
}
.field__error svg { width: 14px; height: 14px; flex: none; }
.field.is-invalid .field__error { display: flex; }
.field.is-invalid .input,
.field.is-invalid .select,
.field.is-invalid .textarea { border-color: var(--c-danger); background: var(--c-danger-soft); }
.field.is-invalid .check__box { border-color: var(--c-danger); background: var(--c-danger-soft); }

.input, .select, .textarea {
  width: 100%;
  min-height: 48px;
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--text-base);
  color: var(--c-fg);
  background: var(--c-surface);
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-sm);
  transition: border-color var(--dur-2) var(--ease-smooth),
              box-shadow   var(--dur-2) var(--ease-smooth),
              background   var(--dur-2) var(--ease-smooth);
}
.input::placeholder, .textarea::placeholder { color: var(--c-fg-subtle); opacity: .8; }
.input:hover, .select:hover, .textarea:hover { border-color: var(--c-border-strong); }
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--c-ring) 22%, transparent);
}
.textarea { min-height: 132px; resize: vertical; line-height: var(--leading-normal); }
.select {
  appearance: none;
  padding-right: var(--sp-10);
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%236B7C90' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--sp-4) center;
}
.input:disabled, .select:disabled, .textarea:disabled {
  opacity: .5; cursor: not-allowed; background: var(--c-bg-sunken);
}

/* Checkbox */
.check { display: flex; align-items: center; gap: var(--sp-3); min-height: 44px; cursor: pointer; }
.check input { position: absolute; opacity: 0; width: 0; height: 0; }
.check__box {
  display: grid; place-items: center;
  width: 22px; height: 22px; flex: none;
  border: 1.5px solid var(--c-border-strong);
  border-radius: var(--r-xs);
  background: var(--c-surface);
  transition: all var(--dur-2) var(--ease-out);
}
.check__box svg { width: 14px; height: 14px; color: var(--c-on-accent); opacity: 0; transform: scale(.4); transition: all var(--dur-2) var(--ease-spring); }
.check input:checked + .check__box { background: var(--c-accent); border-color: var(--c-accent); }
.check input:checked + .check__box svg { opacity: 1; transform: scale(1); }
.check input:focus-visible + .check__box { outline: 3px solid var(--c-ring); outline-offset: 2px; }
.check__text { font-size: var(--text-sm); color: var(--c-fg-muted); line-height: var(--leading-normal); }

/* ---------- 5.6 Accordion ---------- */
.accordion { border-top: 1px solid var(--c-border); }
.acc-item  { border-bottom: 1px solid var(--c-border); }
.acc-trigger {
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4);
  width: 100%;
  padding: var(--sp-5) 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: var(--text-md); font-weight: 600;
  color: var(--c-fg);
  transition: color var(--dur-2) var(--ease-smooth);
}
.acc-trigger:hover { color: var(--c-primary); }
.acc-icon {
  display: grid; place-items: center;
  width: 32px; height: 32px; flex: none;
  border-radius: 50%;
  background: var(--c-primary-soft);
  color: var(--c-primary);
  transition: all var(--dur-3) var(--ease-spring);
}
.acc-icon svg { width: 16px; height: 16px; }
.acc-item.is-open .acc-icon { background: var(--c-accent); color: var(--c-on-accent); transform: rotate(135deg); }
.acc-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-4) var(--ease-out);
}
.acc-item.is-open .acc-panel { grid-template-rows: 1fr; }
.acc-panel > div { overflow: hidden; }
.acc-panel p { padding-bottom: var(--sp-5); font-size: var(--text-base); line-height: var(--leading-relaxed); color: var(--c-fg-muted); max-width: var(--measure); }

/* ---------- 5.7 Navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: var(--z-nav);
  transition: background var(--dur-3) var(--ease-smooth),
              box-shadow var(--dur-3) var(--ease-smooth),
              border-color var(--dur-3) var(--ease-smooth);
  border-bottom: 1px solid transparent;
}
.nav--over-hero { background: transparent; }
.nav.is-stuck {
  background: color-mix(in srgb, var(--c-bg) 88%, transparent);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--c-border);
  box-shadow: var(--e-2);
}
.nav__inner { display: flex; align-items: center; gap: var(--sp-6); min-height: var(--nav-h); }
.nav__links { display: none; gap: var(--sp-1); margin-left: auto; }
@media (min-width: 1024px) { .nav__links { display: flex; } }
.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: var(--sp-2) var(--sp-4);
  font-family: var(--font-display);
  font-size: var(--text-sm); font-weight: 500;
  color: var(--c-fg-muted);
  border-radius: var(--r-full);
  transition: color var(--dur-2) var(--ease-smooth), background var(--dur-2) var(--ease-smooth);
}
.nav__link:hover { color: var(--c-fg); background: var(--c-bg-sunken); }
.nav__link[aria-current="page"] { color: var(--c-primary); font-weight: 600; }
.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute; left: 50%; bottom: 2px;
  width: 16px; height: 2px; margin-left: -8px;
  border-radius: var(--r-full);
  background: var(--c-accent);
}

/* Mobile nav trigger — shown below the 1024px desktop nav breakpoint */
.nav__toggle {
  display: inline-grid; place-items: center;
  width: 48px; height: 48px;
  margin-left: auto;
  border-radius: var(--r-sm);
  color: currentColor;
  transition: background var(--dur-2) var(--ease-smooth);
}
.nav__toggle:hover { background: rgba(255,255,255,.12); }
.nav__toggle span { display: block; width: 22px; height: 2px; background: currentColor; border-radius: 2px; position: relative; }
.nav__toggle span::before,
.nav__toggle span::after { content: ""; position: absolute; left: 0; width: 22px; height: 2px; background: currentColor; border-radius: 2px; }
.nav__toggle span::before { top: -7px; }
.nav__toggle span::after  { top:  7px; }
@media (min-width: 1024px) { .nav__toggle { display: none; } }

/* Logo lockup — three-dot mark + wordmark */
.logo { display: inline-flex; align-items: center; gap: var(--sp-3); min-height: 44px; }
.logo__dots { display: flex; align-items: center; gap: 4px; }
.logo__dots span { border-radius: 50%; display: block; }
.logo__dots span:nth-child(1) { width: 10px; height: 10px; background: var(--dot-1); }
.logo__dots span:nth-child(2) { width: 13px; height: 13px; background: var(--dot-2); }
.logo__dots span:nth-child(3) { width: 16px; height: 16px; background: var(--dot-3); }
.logo__text { display: flex; flex-direction: column; line-height: 1; }
.logo__name {
  font-family: var(--font-display);
  font-size: 1.0625rem; font-weight: 700;
  letter-spacing: var(--tracking-snug);
  color: var(--c-fg);
}
.logo__name em { font-style: italic; }
.logo__tag {
  font-size: 0.625rem; font-weight: 600;
  letter-spacing: var(--tracking-widest); text-transform: uppercase;
  color: var(--c-fg-subtle);
  margin-top: 3px;
}
.logo--on-dark .logo__name { color: #fff; }
.logo--on-dark .logo__tag  { color: rgba(255,255,255,.6); }

/* ---------- 5.8 Hero ---------- */
/* Nav overlays the hero: it is a sticky sibling rendered before <main>, so the
   hero rises under it and pads its own content clear. Scoped to that exact
   arrangement so a hero used anywhere else (e.g. inside a preview frame) is
   left alone. */
.nav ~ main .hero,
.nav ~ main .page-hero { margin-top: calc(-1 * var(--nav-h)); padding-top: var(--nav-h); }

.hero {
  position: relative;
  isolation: isolate;
  background: var(--grad-hero);
  color: #fff;
  overflow: hidden;
}
.hero__grid-overlay {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(90% 70% at 50% 40%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(90% 70% at 50% 40%, #000 20%, transparent 78%);
}
.hero__orb {
  position: absolute; z-index: -1;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .38;
  animation: drift 26s var(--ease-smooth) infinite alternate;
}
.hero__orb--1 { width: 460px; height: 460px; top: -14%;  left: -8%;  background: var(--c-secondary); }
.hero__orb--2 { width: 380px; height: 380px; bottom: -18%; right: -6%; background: var(--c-accent); animation-delay: -12s; opacity: .22; }
.hero__inner { position: relative; padding-block: clamp(4rem, 11vw, 8.5rem); }
.hero h1 { color: #fff; }
.hero__lead { color: rgba(255,255,255,.78); font-size: var(--text-lg); line-height: var(--leading-relaxed); max-width: 34rem; text-wrap: pretty; }

/* Hero media panel with duotone treatment */
.hero__media {
  position: relative;
  border-radius: var(--r-2xl);
  overflow: hidden;
  box-shadow: var(--e-4);
  aspect-ratio: 4 / 3;
}
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(150deg, color-mix(in srgb, var(--c-primary) 55%, transparent) 0%, color-mix(in srgb, var(--c-secondary) 34%, transparent) 100%);
  mix-blend-mode: multiply;
}
/* Floating credential chip over the media */
.hero__chip {
  position: absolute; z-index: 3;
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-5);
  border-radius: var(--r-full);
  background: rgba(255,255,255,.11);
  border: 1px solid rgba(255,255,255,.20);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  box-shadow: var(--e-3);
  color: #fff;
  font-family: var(--font-display);
  font-size: var(--text-sm); font-weight: 600;
  animation: float 7s var(--ease-smooth) infinite;
}
.hero__chip svg { width: 18px; height: 18px; color: var(--c-accent); flex: none; }

/* ---------- 5.9 Marquee (trust strip) ---------- */
.marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee__track {
  display: flex; align-items: center; gap: var(--sp-12);
  width: max-content;
  animation: marquee 34s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  display: flex; align-items: center; gap: var(--sp-3);
  font-family: var(--font-display);
  font-size: var(--text-sm); font-weight: 600;
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  color: var(--c-fg-subtle);
  white-space: nowrap;
}
.marquee__item svg { width: 20px; height: 20px; color: var(--c-secondary-ink); flex: none; }

/* ---------- 5.10 Process steps (dot motif as progress) ---------- */
.steps { display: grid; gap: var(--sp-8); counter-reset: step; }
@media (min-width: 640px)  { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.step { position: relative; padding-top: var(--sp-8); }
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute; top: 0; left: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: var(--tracking-wide);
  color: var(--c-accent);
}
.step::after {
  content: "";
  position: absolute; top: 26px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent) 0 22px, var(--c-border) 22px);
}
.step:last-child::after { background: linear-gradient(90deg, var(--c-accent) 0 22px, transparent 22px); }
.step__title { margin-top: var(--sp-6); font-family: var(--font-display); font-size: var(--text-lg); font-weight: 600; }
.step__text  { margin-top: var(--sp-2); font-size: var(--text-sm); line-height: var(--leading-relaxed); color: var(--c-fg-muted); }

/* ---------- 5.11 Swatch (design-system page) ---------- */
.swatch { display: flex; flex-direction: column; gap: var(--sp-2); }
.swatch__chip {
  height: 88px;
  border-radius: var(--r-md);
  border: 1px solid var(--c-border);
  box-shadow: var(--e-1);
}
.swatch__meta { display: flex; flex-direction: column; gap: 2px; }
.swatch__name { font-family: var(--font-display); font-size: var(--text-sm); font-weight: 600; }
.swatch__hex  { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--c-fg-subtle); text-transform: uppercase; }

/* ---------- 5.12 Footer ---------- */
.footer { background: var(--c-inverse); color: var(--c-on-inverse-mut); }
.footer a { transition: color var(--dur-2) var(--ease-smooth); }
.footer a:hover { color: var(--c-accent); }
.footer__title {
  font-family: var(--font-display);
  font-size: var(--text-sm); font-weight: 600;
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  color: #fff;
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--c-accent);
  display: inline-block;
}
.footer__list { display: flex; flex-direction: column; gap: var(--sp-1); margin-top: var(--sp-4); font-size: var(--text-sm); }
.footer__list li { padding-block: var(--sp-2); }
/* Anchors carry the 44px target; plain text rows keep their natural height */
.footer__list a { display: inline-flex; align-items: center; min-height: 40px; }
.footer__bottom { display: flex; flex-wrap: wrap; gap: var(--sp-4); justify-content: space-between; align-items: center; font-size: var(--text-sm); }
.footer__bottom a { display: inline-flex; align-items: center; min-height: 40px; padding-inline: var(--sp-2); }

/* ==========================================================================
   6. MOTION
   ========================================================================== */

@keyframes spin    { to { transform: rotate(360deg); } }
@keyframes marquee { to { transform: translateX(-50%); } }
@keyframes float   { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-11px); } }
@keyframes drift {
  0%   { transform: translate(0,0) scale(1); }
  100% { transform: translate(64px,-46px) scale(1.13); }
}
@keyframes dotPulse {
  0%, 80%, 100% { transform: scale(.62); opacity: .45; }
  40%           { transform: scale(1);   opacity: 1; }
}

/* Scroll reveal. The hidden start state is gated behind .js, which an inline
   snippet in <head> sets. If scripting is blocked, errors, or never runs, the
   selector never matches and all content renders normally - an invisible page
   is a far worse failure than a skipped animation. */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--dur-5) var(--ease-out), transform var(--dur-5) var(--ease-out);
}
.js .reveal.is-visible { opacity: 1; transform: none; }
.js .reveal[data-delay="1"] { transition-delay: 70ms; }
.js .reveal[data-delay="2"] { transition-delay: 140ms; }
.js .reveal[data-delay="3"] { transition-delay: 210ms; }
.js .reveal[data-delay="4"] { transition-delay: 280ms; }
.js .reveal[data-delay="5"] { transition-delay: 350ms; }

/* Three-dot loader — the logo mark, animated */
.dot-loader { display: inline-flex; align-items: center; gap: 6px; }
.dot-loader span {
  width: 9px; height: 9px; border-radius: 50%;
  animation: dotPulse 1.3s var(--ease-smooth) infinite;
}
.dot-loader span:nth-child(1) { background: var(--dot-1); animation-delay: 0s; }
.dot-loader span:nth-child(2) { background: var(--dot-2); animation-delay: .16s; }
.dot-loader span:nth-child(3) { background: var(--dot-3); animation-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  .hero__orb, .marquee__track, .hero__chip { animation: none; }
}

/* ==========================================================================
   7. UTILITIES
   ========================================================================== */

.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;
}
.skip-link {
  position: absolute; top: -100%; left: var(--sp-4); z-index: var(--z-toast);
  padding: var(--sp-3) var(--sp-5);
  background: var(--c-accent); color: var(--c-on-accent);
  font-weight: 600; border-radius: 0 0 var(--r-sm) var(--r-sm);
  transition: top var(--dur-2) var(--ease-out);
}
.skip-link:focus { top: 0; }

.text-center { text-align: center; }
.text-accent  { color: var(--c-accent); }
.text-primary { color: var(--c-primary); }
.text-muted   { color: var(--c-fg-muted); }
.mt-auto { margin-top: auto; }
.mx-auto { margin-inline: auto; }
.hide-sm { display: none; }
@media (min-width: 640px) { .hide-sm { display: revert; } }