/* ============================================================
   sprime.io — Digital Personhood Brand System
   Design language: institutional navy, soft gold, glass + neumorphism
   Audience: HNWI / affluent older demographic
   Accessibility: WCAG-AA contrast across all text-bearing surfaces
   ============================================================ */

:root {
  /* Core palette — institutional, calm, monied */
  --ink:           #0A1530;   /* deep navy, near-black */
  --ink-2:         #0E1B3D;   /* surface elevated */
  --ink-3:         #142450;   /* surface elevated 2 */
  --vellum:        #F4EFE3;   /* paper-warm white */
  --vellum-2:      #FBF8F1;
  --bone:          #E9E2D0;
  --gold:          #C9A961;   /* primary accent — sparing use */
  --gold-soft:     #E6CC8C;
  --gold-deep:     #8A6F33;
  --slate:         #6B7591;   /* secondary text on light */
  --mist:          #B7BFD0;   /* secondary text on dark */
  --line:          rgba(201, 169, 97, 0.22);
  --line-strong:   rgba(201, 169, 97, 0.55);

  /* States — designed to avoid traffic-light fatigue */
  --positive:      #6EA887;
  --attention:     #B9893A;
  --critical:      #B5564B;

  /* Surfaces */
  --glass:         rgba(255, 255, 255, 0.06);
  --glass-strong:  rgba(255, 255, 255, 0.10);
  --glass-light:   rgba(255, 255, 255, 0.55);
  --scrim:         rgba(10, 21, 48, 0.72);

  /* Shadows — neumorphic (dual) and editorial */
  --shadow-soft:   0 1px 2px rgba(10,21,48,0.06), 0 4px 24px rgba(10,21,48,0.06);
  --shadow-lift:   0 8px 32px rgba(10,21,48,0.18), 0 2px 8px rgba(10,21,48,0.10);
  --neu-light:     -6px -6px 14px rgba(255,255,255,0.55), 6px 6px 14px rgba(20,36,80,0.10);
  --neu-dark:      -6px -6px 14px rgba(255,255,255,0.04), 6px 6px 18px rgba(0,0,0,0.45);

  /* Typography */
  --serif:         "Cormorant Garamond", "Times New Roman", "Source Serif Pro", Georgia, serif;
  --sans:          "Inter", "Söhne", "Aeonik Pro", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono:          "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;

  --fs-display:    clamp(2.6rem, 5.4vw, 4.8rem);
  --fs-h1:         clamp(2rem, 3.6vw, 3rem);
  --fs-h2:         clamp(1.55rem, 2.4vw, 2.1rem);
  --fs-h3:         1.3rem;
  --fs-body:       1.05rem;       /* generous default for older eyes */
  --fs-small:      0.95rem;
  --fs-eyebrow:    0.78rem;

  --lh-tight:      1.1;
  --lh-body:       1.65;

  /* Layout */
  --maxw:          1180px;
  --gutter:        clamp(1.2rem, 3vw, 2.4rem);
  --radius-sm:     8px;
  --radius-md:     14px;
  --radius-lg:     22px;
  --radius-xl:     34px;

  /* Motion */
  --ease:          cubic-bezier(.22, .61, .36, 1);
  --dur:           420ms;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--vellum);
  background: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--gold); color: var(--ink); }

img, svg { max-width: 100%; display: block; }

a {
  color: var(--gold-soft);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
a:hover, a:focus-visible { color: var(--vellum); }
a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Type ---------- */
.serif { font-family: var(--serif); font-weight: 500; letter-spacing: -0.005em; }
.eyebrow {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  color: var(--gold);
}
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; line-height: var(--lh-tight); margin: 0 0 0.65em; letter-spacing: -0.01em; }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
p  { margin: 0 0 1em; max-width: 64ch; }

/* ---------- Layout primitives ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(4rem, 10vh, 7.5rem) 0; position: relative; }
.section--tight { padding: clamp(2.4rem, 6vh, 4.2rem) 0; }
.section--vellum { background: var(--vellum); color: var(--ink); }
.section--vellum h1, .section--vellum h2, .section--vellum h3, .section--vellum h4 { color: var(--ink); }
.section--vellum .eyebrow { color: var(--gold-deep); }
.section--vellum p { color: #2a3756; }

.grid { display: grid; gap: clamp(1.2rem, 2.4vw, 2rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  border: 0;
  margin: 0;
}

/* ---------- Navigation ---------- */
.io-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  background: rgba(10, 21, 48, 0.72);
  border-bottom: 1px solid var(--line);
}
.io-nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter);
}
.io-nav__brand {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--vellum);
}
.io-nav__brand .dot { color: var(--gold); }
.io-nav__links { display: flex; gap: clamp(1.2rem, 2vw, 2rem); align-items: center; }
.io-nav__links a {
  color: var(--mist);
  font-size: 0.96rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.io-nav__links a.active { color: var(--vellum); }
.io-nav__links a:hover { color: var(--gold-soft); }
.io-nav__cta { margin-left: 0.5rem; }
@media (max-width: 820px) {
  .io-nav__links { display: none; }
  .io-nav__cta { display: inline-flex; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6em;
  padding: 0.95rem 1.6rem;
  font-family: var(--sans);
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: 999px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  text-decoration: none;
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.btn--primary {
  background: var(--gold);
  color: var(--ink);
  box-shadow: 0 6px 22px rgba(201,169,97,0.28);
}
.btn--primary:hover { background: var(--gold-soft); transform: translateY(-1px); color: var(--ink); }
.btn--ghost {
  background: transparent;
  color: var(--vellum);
  border-color: var(--line-strong);
}
.btn--ghost:hover { background: var(--glass); border-color: var(--gold); color: var(--vellum); }
.btn--ink {
  background: var(--ink);
  color: var(--vellum);
}
.btn--ink:hover { background: var(--ink-2); }

/* ---------- Cards: neumorphic + glass ---------- */
.card {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.6rem, 2.4vw, 2.2rem);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.card:hover { border-color: var(--line-strong); transform: translateY(-2px); }

.card--glass {
  background: var(--glass);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid rgba(255,255,255,0.12);
}

.card--neu-light {
  background: var(--vellum);
  border-radius: var(--radius-lg);
  padding: clamp(1.6rem, 2.4vw, 2.2rem);
  border: 1px solid rgba(10,21,48,0.06);
  box-shadow: var(--neu-light);
  color: var(--ink);
}

.card__eyebrow { font-size: var(--fs-eyebrow); letter-spacing: 0.22em; color: var(--gold); text-transform: uppercase; font-weight: 600; margin-bottom: 0.6rem; }
.card__title { font-family: var(--serif); font-size: 1.45rem; line-height: 1.2; margin: 0 0 0.6rem; }
.card__body { color: var(--mist); font-size: 0.98rem; line-height: 1.6; }
.card--neu-light .card__body { color: #3a466a; }

/* ---------- Trust strip ---------- */
.trust-strip {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 2.2rem;
  padding: 1.8rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: 0;
}
.trust-strip__item {
  display: flex; align-items: center; gap: 0.6rem;
  color: var(--mist);
  font-size: 0.86rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}
.trust-strip__item svg { width: 18px; height: 18px; flex: 0 0 18px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(6rem, 14vh, 10rem) 0 clamp(4rem, 10vh, 7rem);
  overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(60% 50% at 20% 25%, rgba(201,169,97,0.10), transparent 70%),
    radial-gradient(50% 40% at 80% 70%, rgba(20,36,80,0.55), transparent 70%);
}
.hero__bg::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(70% 60% at 50% 40%, black, transparent 80%);
}
.hero__inner { position: relative; z-index: 1; max-width: 880px; }
.hero__title {
  font-family: var(--serif);
  font-size: var(--fs-display);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0.6rem 0 1.2rem;
}
.hero__title .accent { color: var(--gold); font-style: italic; font-weight: 400; }
.hero__lede {
  font-size: 1.18rem;
  line-height: 1.6;
  color: var(--mist);
  max-width: 56ch;
  margin-bottom: 2rem;
}
.hero__actions { display: flex; gap: 0.9rem; flex-wrap: wrap; }
.hero__meta {
  margin-top: 3rem;
  display: flex; gap: 2.2rem; flex-wrap: wrap;
  color: var(--mist);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
}
.hero__meta strong { color: var(--vellum); font-weight: 600; }

/* ---------- Pillars ---------- */
.pillar { padding: 0; }
.pillar__icon {
  width: 44px; height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: linear-gradient(160deg, rgba(201,169,97,0.18), rgba(201,169,97,0.06));
  border: 1px solid var(--line-strong);
  margin-bottom: 1rem;
}
.pillar__icon svg { width: 22px; height: 22px; color: var(--gold); }

/* ---------- Tools strip ---------- */
.tool-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-2);
}
.tool-cell {
  padding: 1.6rem 1.8rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  display: flex; flex-direction: column; gap: 0.4rem;
  color: var(--vellum);
  transition: background var(--dur) var(--ease);
}
.tool-cell:hover { background: var(--ink-3); color: var(--vellum); }
.tool-cell__label { font-size: var(--fs-eyebrow); letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); font-weight: 600; }
.tool-cell__name { font-family: var(--serif); font-size: 1.2rem; margin: 0; }
.tool-cell__desc { color: var(--mist); font-size: 0.92rem; line-height: 1.5; }
.tool-cell__chip {
  font-size: 0.72rem; letter-spacing: 0.16em;
  color: var(--ink); background: var(--gold); padding: 0.15rem 0.55rem;
  border-radius: 999px; text-transform: uppercase; font-weight: 700;
  display: inline-block; margin-top: 0.4rem;
  align-self: flex-start;
}
.tool-cell__chip.free { background: var(--vellum); color: var(--ink); }

/* ---------- Pricing tiers ---------- */
.tier {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.8rem, 2.6vw, 2.4rem);
  display: flex; flex-direction: column; gap: 1.2rem;
  position: relative;
}
.tier--featured {
  border-color: var(--gold);
  background: linear-gradient(180deg, var(--ink-3), var(--ink-2));
  box-shadow: 0 24px 50px rgba(201,169,97,0.10), 0 1px 0 rgba(201,169,97,0.4) inset;
}
.tier__badge {
  position: absolute; top: -12px; left: 24px;
  background: var(--gold); color: var(--ink);
  font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase;
  padding: 0.3rem 0.75rem; border-radius: 999px; font-weight: 700;
}
.tier__name { font-family: var(--serif); font-size: 1.5rem; margin: 0; }
.tier__price { font-family: var(--serif); font-size: 2.4rem; line-height: 1; color: var(--vellum); }
.tier__price .per { font-size: 0.95rem; color: var(--mist); font-family: var(--sans); font-weight: 400; }
.tier__price.bespoke { font-size: 1.6rem; color: var(--gold); }
.tier__list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.6rem; color: var(--mist); }
.tier__list li {
  position: relative; padding-left: 1.5rem; font-size: 0.96rem; line-height: 1.5;
}
.tier__list li::before {
  content: ""; position: absolute; left: 0; top: 0.55em;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--gold);
}
.tier__list li.bold { color: var(--vellum); }

/* ---------- Footer ---------- */
.io-footer {
  background: #060D22;
  color: var(--mist);
  padding: 4rem 0 2.4rem;
  border-top: 1px solid var(--line);
}
.io-footer__grid {
  display: grid; gap: 2rem;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
}
@media (max-width: 760px) { .io-footer__grid { grid-template-columns: 1fr 1fr; } }
.io-footer h4 {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  color: var(--gold);
  margin-bottom: 1rem;
  font-weight: 700;
}
.io-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.io-footer a { color: var(--mist); font-size: 0.95rem; }
.io-footer a:hover { color: var(--vellum); }
.io-footer__brand .name {
  font-family: var(--serif);
  font-size: 1.6rem;
  color: var(--vellum);
  display: block;
  margin-bottom: 0.6rem;
}
.io-footer__brand p { color: var(--mist); font-size: 0.95rem; max-width: 32ch; }
.io-footer__base {
  margin-top: 3rem; padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  font-size: 0.85rem; color: var(--mist);
}

/* ---------- Marquee certifications ---------- */
.cert-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.2rem;
}
.cert-tile {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.4rem;
  text-align: center;
}
.cert-tile__seal {
  width: 56px; height: 56px; margin: 0 auto 0.8rem;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at 35% 35%, var(--gold-soft), var(--gold) 60%, var(--gold-deep));
  color: var(--ink);
  font-family: var(--serif); font-weight: 700; font-size: 0.95rem;
  border: 2px solid var(--gold-soft);
  box-shadow: 0 6px 22px rgba(201,169,97,0.22);
}
.cert-tile__name { font-family: var(--serif); font-size: 1.05rem; color: var(--vellum); margin: 0.2rem 0; }
.cert-tile__note { font-size: 0.82rem; color: var(--mist); margin: 0; }

/* ---------- Form primitives (fiduciary / contact) ---------- */
.form-row { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1.2rem; }
.form-row label { font-size: 0.86rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gold); font-weight: 600; }
.form-row input, .form-row textarea, .form-row select {
  font-family: var(--sans); font-size: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,0.04);
  color: var(--vellum);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  outline: none; border-color: var(--gold); background: rgba(255,255,255,0.07);
}
.form-row .help { font-size: 0.85rem; color: var(--mist); }

/* ---------- Reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Print niceties (legal pages) ---------- */
@media print {
  body { background: #fff; color: #000; }
  .io-nav, .io-footer, .btn { display: none !important; }
  a { color: #000; text-decoration: underline; }
}