/* =============================================================
   Indelible Design — Advisory site
   Shared stylesheet. Built on the Indelible Design system tokens.
   Three explorable bases (ink / blue / cream) remap the semantic
   layer; everything downstream reads the semantic tokens only.
   ============================================================= */

/* ---------- Fonts (local) ---------- */
@font-face { font-family:"Scandia"; src:url("fonts/ScandiaWebLight.woff2") format("woff2"); font-weight:300; font-style:normal; font-display:swap; }
@font-face { font-family:"Scandia"; src:url("fonts/ScandiaWebRegular.woff2") format("woff2"); font-weight:400; font-style:normal; font-display:swap; }
@font-face { font-family:"Scandia"; src:url("fonts/ScandiaWebRegularItalic.woff2") format("woff2"); font-weight:400; font-style:italic; font-display:swap; }
@font-face { font-family:"Scandia"; src:url("fonts/ScandiaWebMedium.woff2") format("woff2"); font-weight:500; font-style:normal; font-display:swap; }
@font-face { font-family:"Scandia"; src:url("fonts/ScandiaWebBold.woff2") format("woff2"); font-weight:700; font-style:normal; font-display:swap; }
@font-face { font-family:"Scandia"; src:url("fonts/ScandiaWebBoldItalic.woff2") format("woff2"); font-weight:700; font-style:italic; font-display:swap; }
@font-face { font-family:"Scandia Stencil"; src:url("fonts/ScandiaWebStencil.woff2") format("woff2"); font-weight:400; font-style:normal; font-display:swap; }

/* ---------- Brand constants ---------- */
:root {
  --color-blue:#3f798d; --color-blue-700:#2d5a6b; --color-blue-300:#7ea3b1; --color-blue-100:#d6e2e7;
  --color-gold:#dc9f5e; --color-gold-700:#a37133; --color-gold-300:#ecc599;
  --color-cream:#efe8d8; --color-cream-100:#faf6ec; --color-cream-500:#ddd2b8;
  --color-green:#aab941; --color-red:#8d3a08;
  --color-ink-900:#0e0e0d; --color-ink-700:#2a2826; --color-ink-500:#5a5853; --color-ink-300:#8c8980; --color-ink-100:#c4c1b6;

  --font-display:"Scandia","Scandia Line",ui-sans-serif,system-ui,sans-serif;
  --font-body:"Scandia","Scandia Line",ui-sans-serif,system-ui,sans-serif;
  --font-stencil:"Scandia Stencil","Scandia",ui-sans-serif,system-ui,sans-serif;

  --weight-regular:400; --weight-medium:500; --weight-semibold:600; --weight-bold:700;

  --leading-tight:1.05; --leading-snug:1.18; --leading-normal:1.45; --leading-loose:1.62;
  --tracking-tight:-0.022em; --tracking-display:-0.03em; --tracking-wide:0.14em;

  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px; --space-5:24px;
  --space-6:32px; --space-7:48px; --space-8:64px; --space-9:96px; --space-10:128px;

  --radius-sm:4px; --radius-md:8px; --radius-lg:14px;

  --ease-standard:cubic-bezier(0.2,0.6,0.2,1);
  --dur-fast:120ms; --dur-base:200ms; --dur-slow:360ms;

  --maxw:1180px;
  --shell:clamp(20px,5vw,72px);

  --size-display:clamp(2.9rem,5.2vw + 1rem,6rem);
  --size-h1:clamp(2.1rem,3vw + 1rem,3.7rem);
  --size-h2:clamp(1.7rem,1.4vw + 1rem,2.5rem);
  --size-h3:clamp(1.3rem,0.6vw + 1rem,1.6rem);
  --size-lede:clamp(1.15rem,0.5vw + 1rem,1.45rem);
  --size-body:1.0625rem;
  --size-eyebrow:0.75rem;
}

/* ---------- BASE: ink (default, dark) ---------- */
:root, :root[data-base="ink"] {
  --bg:#0f0e0b;
  --bg-alt:#15140f;
  --bg-deep:#0a0907;
  --surface:#1a1813;
  --surface-2:#221f18;
  --fg:#efe8d8;
  --fg-muted:#b3ac9a;
  --fg-soft:#827c6c;
  --accent:#dc9f5e;
  --accent-text:#dc9f5e;
  --accent-ink:#0f0e0b;
  --gold:#dc9f5e;
  --link:#e3ad71;
  --link-hover:#f0c489;
  --border:rgba(239,232,216,0.13);
  --border-strong:rgba(239,232,216,0.30);
  --fg-on-deep:#efe8d8;
  --shadow-lg:0 24px 60px -28px rgba(0,0,0,0.7);
  --nav-bg:rgba(15,14,11,0.93);
}

/* ---------- BASE: blue (deep dusty blue + gold) — matches DXC reference ---------- */
:root[data-base="blue"] {
  --bg:#2d5a6b;
  --bg-alt:#28525f;
  --bg-deep:#20454f;
  --surface:#356576;
  --surface-2:#3c6e80;
  --fg:#efe8d8;
  --fg-muted:#b9cdd4;
  --fg-soft:#8aa8b2;
  --accent:#dc9f5e;
  --accent-text:#dc9f5e;
  --accent-ink:#20454f;
  --gold:#dc9f5e;
  --link:#e3ad71;
  --link-hover:#f0c489;
  --border:rgba(239,232,216,0.17);
  --border-strong:rgba(239,232,216,0.34);
  --fg-on-deep:#efe8d8;
  --shadow-lg:0 24px 60px -28px rgba(0,0,0,0.45);
  --nav-bg:rgba(45,90,107,0.9);
}

/* ---------- BASE: cream (light, system default) ---------- */
:root[data-base="cream"] {
  --bg:#efe8d8;
  --bg-alt:#faf6ec;
  --bg-deep:#16323b;
  --surface:#ffffff;
  --surface-2:#fbf7ee;
  --fg:#15140f;
  --fg-muted:#56544c;
  --fg-soft:#84806f;
  --accent:#a37133;
  --accent-text:#8a5f24;
  --accent-ink:#ffffff;
  --gold:#a37133;
  --link:#2d5a6b;
  --link-hover:#3f798d;
  --border:rgba(14,14,13,0.14);
  --border-strong:rgba(14,14,13,0.30);
  --fg-on-deep:#efe8d8;
  --shadow-lg:0 22px 50px -24px rgba(14,14,13,0.30);
  --nav-bg:rgba(239,232,216,0.94);
}

/* =============================================================
   Reset & base
   ============================================================= */
*,*::before,*::after { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; }
body {
  margin:0; background:var(--bg); color:var(--fg);
  font-family:var(--font-body); font-size:var(--size-body);
  line-height:var(--leading-loose); font-weight:var(--weight-regular);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  transition:background var(--dur-base) var(--ease-standard), color var(--dur-base) var(--ease-standard);
}
img { max-width:100%; display:block; }
a { color:var(--link); text-decoration:none; }
::selection { background:var(--accent); color:var(--accent-ink); }
:focus-visible { outline:2px solid var(--accent); outline-offset:3px; }

h1,h2,h3,h4 { font-family:var(--font-display); margin:0; }
p { margin:0; text-wrap:pretty; }

/* ---------- Layout helpers ---------- */
.shell { max-width:var(--maxw); margin:0 auto; padding-left:var(--shell); padding-right:var(--shell); }
.section { padding-block:clamp(51.2px,7.2vw,102.4px) clamp(64px,9vw,128px); }
.section--tight { padding-block:clamp(38.4px,4.8vw,64px) clamp(48px,6vw,80px); }
.band-alt { background:var(--bg-alt); }
.band-deep { background:var(--bg-deep); color:var(--fg-on-deep); }
.divider { display:none; }

/* ---------- Type primitives ---------- */
.eyebrow {
  font-size:var(--size-eyebrow); font-weight:var(--weight-semibold);
  letter-spacing:var(--tracking-wide); text-transform:uppercase;
  color:var(--accent-text); margin:0; display:inline-flex; align-items:center;
}

.display {
  font-family:var(--font-display); font-weight:var(--weight-bold);
  font-size:var(--size-display); line-height:var(--leading-tight);
  letter-spacing:var(--tracking-display); margin:0;
}
.h1 { font-size:var(--size-h1); font-weight:var(--weight-bold); line-height:var(--leading-tight); letter-spacing:var(--tracking-tight); }
.h2 { font-size:var(--size-h2); font-weight:var(--weight-semibold); line-height:var(--leading-snug); letter-spacing:var(--tracking-tight); }
.h3 { font-size:var(--size-h3); font-weight:var(--weight-semibold); line-height:var(--leading-snug); letter-spacing:var(--tracking-tight); }
.lede { font-size:var(--size-lede); line-height:var(--leading-normal); color:var(--fg-muted); font-weight:var(--weight-regular); }
.body-lg { font-size:1.18rem; line-height:1.6; }
.muted { color:var(--fg-muted); }
.soft { color:var(--fg-soft); }
.measure { max-width:62ch; }
.measure-sm { max-width:46ch; }
.accent { color:var(--accent-text); }
em, .ital { font-style:italic; }

/* ---------- Buttons / links ---------- */
.btn {
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-body); font-size:0.98rem; font-weight:var(--weight-medium);
  letter-spacing:0.005em; padding:14px 24px; border-radius:var(--radius-md);
  border:1px solid transparent; cursor:pointer; text-decoration:none;
  transition:transform var(--dur-fast) var(--ease-standard), background var(--dur-base) var(--ease-standard), border-color var(--dur-base) var(--ease-standard), color var(--dur-base) var(--ease-standard);
}
.btn .arr { transition:transform var(--dur-base) var(--ease-standard); }
.btn:hover .arr { transform:translateX(4px); }
.btn:active { transform:translateY(1px); }
.btn-primary { background:var(--accent); color:var(--accent-ink); font-weight:var(--weight-semibold); }
.btn-primary:hover { background:color-mix(in oklab,var(--accent) 86%, #fff); }
.btn-ghost { background:transparent; color:var(--fg); border-color:var(--border-strong); }
.btn-ghost:hover { border-color:var(--fg); background:color-mix(in oklab,var(--fg) 6%, transparent); }

.link-arrow {
  display:inline-flex; align-items:center; gap:9px; color:var(--accent-text);
  font-weight:var(--weight-medium); border-bottom:1px solid color-mix(in oklab,var(--accent) 45%, transparent);
  padding-bottom:3px; transition:border-color var(--dur-base) var(--ease-standard), color var(--dur-base) var(--ease-standard);
}
.link-arrow .arr { transition:transform var(--dur-base) var(--ease-standard); }
.link-arrow:hover { border-color:var(--accent); color:var(--link-hover); }
.link-arrow:hover .arr { transform:translateX(4px); }

/* =============================================================
   Top navigation
   ============================================================= */
.nav {
  position:sticky; top:0; z-index:60; height:68px;
  display:flex; align-items:center;
  background:var(--nav-bg); backdrop-filter:blur(14px) saturate(1.1);
  -webkit-backdrop-filter:blur(14px) saturate(1.1);
}
.nav__inner { max-width:var(--maxw); margin:0 auto; width:100%; padding-inline:var(--shell);
  display:flex; align-items:center; justify-content:space-between; gap:var(--space-5); }
.brandmark { display:flex; align-items:baseline; gap:0; text-decoration:none; color:var(--fg);
  font-family:var(--font-display); font-weight:var(--weight-bold); font-size:28px; letter-spacing:-0.01em; }
.brandmark .b2 { font-weight:var(--weight-regular); color:var(--fg); }
.nav__links { display:flex; align-items:center; gap:clamp(14px,2vw,34px); }
.nav__links a {
  color:var(--fg-muted); font-size:0.95rem; font-weight:var(--weight-medium);
  text-decoration:none; padding:6px 0; position:relative;
  transition:color var(--dur-base) var(--ease-standard);
}
.nav__links a:hover { color:var(--fg); }
.nav__links a[aria-current="page"] { color:var(--fg); }
.nav__links a[aria-current="page"]::after {
  content:""; position:absolute; left:0; right:0; bottom:2px; height:1.5px; background:var(--accent);
}
.nav__cta { padding:10px 18px; font-size:0.92rem; }
.nav__menu-btn { display:none; }
.nav__mobile { display:none; }

@media (max-width:780px) {
  .nav__links { display:none; }
  .nav__cta { display:none; }
  .nav__menu-btn {
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    background:transparent; border:1px solid var(--border-strong); color:var(--fg);
    border-radius:var(--radius-md); padding:8px 14px; font-family:var(--font-body);
    font-size:0.9rem; font-weight:var(--weight-medium); cursor:pointer;
  }
  .nav__mobile {
    position:fixed; inset:68px 0 auto 0; background:var(--bg); border-bottom:1px solid var(--border);
    display:none; flex-direction:column; padding:var(--space-4) var(--shell) var(--space-6); gap:2px; z-index:59;
  }
  .nav__mobile.open { display:flex; }
  .nav__mobile a { color:var(--fg); font-size:1.15rem; font-family:var(--font-display); font-weight:var(--weight-medium);
    padding:14px 0; border-bottom:1px solid var(--border); text-decoration:none; }
  .nav__mobile a:last-child { border-bottom:0; }
}

/* =============================================================
   Cards / grids
   ============================================================= */
.grid { display:grid; gap:var(--space-5); }
.cards-6 { grid-template-columns:repeat(3,1fr); }
.cards-5 { grid-template-columns:repeat(5,1fr); }
.cards-4 { grid-template-columns:repeat(4,1fr); }
.cards-3 { grid-template-columns:repeat(3,1fr); }
.cards-2 { grid-template-columns:repeat(2,1fr); }
@media (max-width:1100px){ .cards-5{ grid-template-columns:repeat(3,1fr);} }
@media (max-width:1000px){ .cards-4{ grid-template-columns:repeat(2,1fr);} .cards-3{ grid-template-columns:repeat(2,1fr);} }
@media (max-width:760px){ .cards-6{ grid-template-columns:repeat(2,1fr);} .cards-5{ grid-template-columns:repeat(2,1fr);} }
@media (max-width:620px){ .cards-6,.cards-5,.cards-4,.cards-3,.cards-2{ grid-template-columns:1fr; } }

.card {
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg);
  padding:var(--space-6); display:flex; flex-direction:column; gap:var(--space-3);
  transition:border-color var(--dur-base) var(--ease-standard), transform var(--dur-base) var(--ease-standard), background var(--dur-base) var(--ease-standard);
}
.card:hover { border-color:var(--border-strong); }
.card .idx { font-family:var(--font-stencil); font-size:0.95rem; letter-spacing:0.1em; color:var(--accent-text); }
.card h3 { font-size:1.32rem; font-weight:var(--weight-semibold); line-height:1.16; letter-spacing:var(--tracking-tight); }
.card p { color:var(--fg-muted); font-size:1rem; line-height:1.55; }

/* numbered editorial list */
.numlist { display:grid; gap:0; }
.numlist .row {
  display:grid; grid-template-columns:auto 1fr; gap:var(--space-5); align-items:start;
  padding:var(--space-6) 0; border-top:1px solid var(--border);
}
.numlist .row:last-child { border-bottom:1px solid var(--border); }
.numlist .n { font-family:var(--font-stencil); font-size:1rem; color:var(--accent-text); letter-spacing:0.08em; padding-top:6px; }
.numlist h3 { font-size:1.45rem; font-weight:var(--weight-semibold); letter-spacing:var(--tracking-tight); line-height:1.14; }
.numlist p { color:var(--fg-muted); margin-top:8px; max-width:60ch; }

/* simple bordered feature list */
.flowlist { display:grid; gap:0; }
.flowlist li { list-style:none; display:grid; grid-template-columns:auto 1fr; gap:var(--space-4);
  padding:var(--space-5) 0; border-top:1px solid var(--border); align-items:baseline; }
.flowlist li:last-child { border-bottom:1px solid var(--border); }
.flowlist .mk { color:var(--accent); font-size:1.1rem; line-height:1.4; }
.flowlist .t { font-size:1.12rem; color:var(--fg); line-height:1.45; }
.flowlist .t .sub { display:block; color:var(--fg-muted); font-size:1rem; margin-top:4px; }

/* =============================================================
   Footer
   ============================================================= */
.footer { background:var(--nav-bg); color:var(--fg); }
.footer__top { display:grid; grid-template-columns:minmax(0,1fr) auto auto; column-gap:clamp(48px,7vw,112px); row-gap:var(--space-7);
  padding-block:clamp(48px,6vw,88px) var(--space-4); }
@media (max-width:760px){ .footer__top{ grid-template-columns:1fr; gap:var(--space-6);} }
.footer__brand .bm { font-family:var(--font-display); font-weight:var(--weight-bold); font-size:1.4rem; }
.footer__brand p { color:var(--fg-muted); margin-top:var(--space-3); max-width:34ch; }
.footer h4 { font-size:0.78rem; letter-spacing:var(--tracking-wide); text-transform:uppercase; color:var(--fg-soft);
  font-weight:var(--weight-semibold); margin-bottom:var(--space-4); }
.footer .fcol a { display:block; color:var(--fg-muted); padding:7px 0; font-size:1rem; text-decoration:none;
  transition:color var(--dur-base) var(--ease-standard); }
.footer .fcol a:hover { color:var(--fg); }
.footer__bar { padding-block:0 var(--space-6);
  display:flex; justify-content:space-between; gap:var(--space-4); flex-wrap:wrap; }
.footer__bar p { color:var(--fg-soft); font-size:0.86rem; }
.footer__pod { display:inline-flex; align-items:center; gap:10px; color:var(--fg-muted); font-size:0.9rem; }
.footer__pod .dot { width:6px; height:6px; border-radius:50%; background:var(--accent); }

/* =============================================================
   Reveal on load / scroll
   ============================================================= */
@media (prefers-reduced-motion:no-preference){
  .reveal { opacity:0; transform:translateY(14px); transition:opacity 640ms var(--ease-standard), transform 640ms var(--ease-standard); }
  .reveal.in { opacity:1; transform:none; }
  .reveal.d1{ transition-delay:80ms;} .reveal.d2{ transition-delay:160ms;} .reveal.d3{ transition-delay:240ms;}
  .reveal.d4{ transition-delay:320ms;} .reveal.d5{ transition-delay:400ms;} .reveal.d6{ transition-delay:480ms;}
}

/* =============================================================
   Theme / hero control panel
   ============================================================= */
.ctrl { position:fixed; right:18px; bottom:18px; z-index:80; font-family:var(--font-body); }
.ctrl__toggle {
  display:inline-flex; align-items:center; gap:9px; cursor:pointer;
  background:var(--surface); color:var(--fg); border:1px solid var(--border-strong);
  border-radius:999px; padding:10px 16px; font-size:0.84rem; font-weight:var(--weight-medium);
  box-shadow:var(--shadow-lg); transition:border-color var(--dur-base) var(--ease-standard);
}
.ctrl__toggle:hover { border-color:var(--fg); }
.ctrl__toggle .swatch { width:13px; height:13px; border-radius:50%; background:var(--accent); border:1px solid var(--border-strong); }
.ctrl__panel {
  position:absolute; right:0; bottom:calc(100% + 12px); width:264px;
  background:var(--surface); border:1px solid var(--border-strong); border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg); padding:var(--space-5); display:none;
}
.ctrl__panel.open { display:block; }
.ctrl__panel .grp + .grp { margin-top:var(--space-5); }
.ctrl__panel .lbl { font-size:0.68rem; letter-spacing:var(--tracking-wide); text-transform:uppercase;
  color:var(--fg-soft); font-weight:var(--weight-semibold); margin-bottom:10px; }
.seg { display:flex; gap:6px; background:var(--bg-alt); border:1px solid var(--border); border-radius:var(--radius-md); padding:4px; }
.seg button { flex:1; border:0; background:transparent; color:var(--fg-muted); cursor:pointer;
  font-family:var(--font-body); font-size:0.82rem; font-weight:var(--weight-medium); padding:8px 4px; border-radius:5px;
  transition:background var(--dur-fast) var(--ease-standard), color var(--dur-fast) var(--ease-standard); }
.seg button:hover { color:var(--fg); }
.seg button[aria-pressed="true"] { background:var(--accent); color:var(--accent-ink); font-weight:var(--weight-semibold); }
.ctrl__note { margin-top:var(--space-4); font-size:0.74rem; color:var(--fg-soft); line-height:1.4; }
.ctrl__hero-grp[hidden]{ display:none; }

/* =============================================================
   Misc page atoms
   ============================================================= */
.kicker-row { display:flex; align-items:center; gap:var(--space-4); flex-wrap:wrap; }
.tag { font-size:0.8rem; color:var(--fg-muted); border:1px solid var(--border); border-radius:var(--radius-sm);
  padding:5px 11px; letter-spacing:0.01em; }
.stat-stencil { font-family:var(--font-stencil); }
.rule-top { border-top:1px solid var(--border); }