/* =========================================================================
   Preceptum.AI — Design System (Visual Identity Guide aligned)
   Platform Azure on Deep Space. Georgia serif authority + Inter/Arial labels.
   Trimark geometry. Institutional platform character.
   ========================================================================= */

/* ---- Tokens (from the Visual Identity Guide palette) ----------------- */
:root {
  /* Brand palette */
  --space:       #0A0F1E;   /* Deep Space — primary ground */
  --space-deep:  #070B16;   /* deepest sections, footer */
  --cobalt:      #1B2F6B;   /* Institutional Cobalt — secondary structural */
  --azure:       #2563EB;   /* Platform Azure — active / accent / .ai mark */
  --signal:      #3B82F6;   /* Signal Blue — hover / secondary */
  --teal:        #009488;   /* Knowledge Teal — education / healthcare vertical */
  --amber:       #D97706;   /* Warm Amber — advisory / human vertical */
  --frost:       #F0F4FF;   /* Digital Frost — light platform background */

  /* Derived UI surfaces (bluish, built on Deep Space + Cobalt) */
  --panel:      #111A33;
  --panel-2:    #16203D;
  --border:     #20294A;
  --border-soft:#18203C;

  --azure-wash: rgba(37, 99, 235, 0.12);
  --azure-line: rgba(59, 130, 246, 0.40);
  --teal-wash:  rgba(0, 148, 136, 0.12);
  --amber-wash: rgba(217, 119, 6, 0.12);

  /* Text */
  --text:        #E6EAF2;
  --text-strong: #FFFFFF;
  --text-muted:  #97A1B8;
  --text-dim:    #5E6886;

  --danger: #E0625B;

  /* Type — Georgia serif authority, Inter/Arial sans for labels & UI, mono for data */
  --font-serif: Georgia, "Times New Roman", "Iowan Old Style", serif;
  --font-sans:  "Inter", Arial, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono:  "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Scale */
  --maxw: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 3px;
  --radius-lg: 6px;

  --ease: cubic-bezier(0.16, 0.84, 0.44, 1);
}

/* ---- Reset / base ---------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--space);
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.8;            /* Guide: body Georgia, line-height 1.80 */
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--signal); text-decoration: none; transition: color .18s var(--ease); }
a:hover { color: var(--text-strong); }

/* Display headlines: Georgia serif (institutional authority) */
h1, h2, h3, h4 { font-family: var(--font-serif); color: var(--text-strong); font-weight: 700; line-height: 1.12; letter-spacing: -0.01em; margin: 0 0 .5em; }
h1 { font-size: clamp(2.4rem, 5.4vw, 4.2rem); font-weight: 400; }   /* large serif, light weight like the guide */
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); font-weight: 400; }
h3 { font-size: clamp(1.15rem, 2vw, 1.45rem); font-weight: 700; }
p { margin: 0 0 1rem; }
strong { color: var(--text-strong); font-weight: 700; }

ul, ol { margin: 0 0 1rem; padding-left: 1.2rem; }
li { margin-bottom: .45rem; }

:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 2px; }

/* ---- Layout ---------------------------------------------------------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(56px, 8vw, 110px); }
.section--tight { padding-block: clamp(40px, 5vw, 64px); }
.section--deep { background: var(--space-deep); }
.section--panel { background: linear-gradient(180deg, var(--space) 0%, var(--space-deep) 100%); }

.grid { display: grid; gap: clamp(20px, 3vw, 36px); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .cols-3, .cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; } }

.dotgrid {
  background-image: radial-gradient(rgba(120,140,200,0.05) 1px, transparent 1px);
  background-size: 26px 26px;
}

/* ---- Utility text ---------------------------------------------------- */
/* Eyebrows / labels: Inter sans, tracked, uppercase (Guide: Arial Bold tracked caps) */
.eyebrow {
  font-family: var(--font-sans);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--signal);
  font-weight: 600;
  margin: 0 0 1.1rem;
}
.eyebrow--muted { color: var(--text-dim); }
.lede { font-family: var(--font-serif); font-size: clamp(1.05rem, 1.7vw, 1.3rem); color: var(--text-muted); max-width: 60ch; line-height: 1.75; }
.muted { color: var(--text-muted); }
.dim { color: var(--text-dim); }
.mono { font-family: var(--font-mono); }
.serif-italic { font-family: var(--font-serif); font-style: italic; color: var(--signal); }
.center { text-align: center; }
.measure { max-width: 68ch; }
.measure-narrow { max-width: 52ch; }

/* ---- Buttons (Inter sans, tracked) ----------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--font-sans); font-size: .82rem; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  padding: .85rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--azure); color: #fff; border-color: var(--azure); }
.btn--primary:hover { background: var(--signal); color: #fff; }
.btn--ghost { background: transparent; color: var(--text-strong); border-color: var(--border); }
.btn--ghost:hover { border-color: var(--signal); color: var(--text-strong); background: var(--azure-wash); }
.btn--quiet { background: transparent; color: var(--text-muted); border-color: transparent; padding-inline: .3rem; }
.btn--quiet:hover { color: var(--text-strong); }
.btn--block { width: 100%; justify-content: center; }
.btn--sm { padding: .58rem 1rem; font-size: .72rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.8rem; }
.btn .arrow { transition: transform .18s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* ---- Header ---------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 15, 30, 0.86);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header__top { border-top: 2px solid var(--azure); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.nav__links { display: flex; align-items: center; gap: 1.9rem; list-style: none; margin: 0; padding: 0; }
.nav__links a { font-family: var(--font-sans); color: var(--text-muted); font-size: .82rem; font-weight: 500; letter-spacing: .04em; text-transform: uppercase; }
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--text-strong); }
.nav__cta { display: flex; align-items: center; gap: 1rem; }
.nav__toggle { display: none; background: none; border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); padding: .5rem .65rem; cursor: pointer; font-family: var(--font-sans); font-size: .8rem; }

/* Logo */
.logo { display: inline-flex; align-items: center; }
.logo__img { height: 34px; width: auto; display: block; }
.footer__brand .logo__img { height: 38px; }

@media (max-width: 880px) {
  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: absolute; top: 74px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--space-deep); border-bottom: 1px solid var(--border);
    padding: .5rem var(--gutter) 1rem;
    display: none;
  }
  .nav__links.open { display: flex; }
  .nav__links li { width: 100%; margin: 0; }
  .nav__links a { display: block; padding: .9rem 0; width: 100%; border-bottom: 1px solid var(--border-soft); }
  .nav__cta .btn--ghost { display: none; }
}

/* ---- Hero ------------------------------------------------------------ */
.hero { position: relative; overflow: hidden; }
.hero__grid {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(28px, 4vw, 56px);
  align-items: center;
  padding-block: clamp(54px, 8vw, 104px);
}
@media (max-width: 960px) { .hero__grid { grid-template-columns: 1fr; } }
.hero h1 { margin-bottom: 1.5rem; }
.hero h1 .accent { font-style: italic; color: var(--signal); display: block; }
.hero .lede { margin-bottom: 0; }

/* Trimark watermark (signature geometry, ghosted) */
.trimark-hero { position: relative; display: grid; place-items: center; min-height: 320px; }
.trimark-hero svg { width: min(100%, 420px); height: auto; }
.trimark-hero .tri { fill: none; stroke: var(--azure-line); stroke-width: 1.4; }
.trimark-hero .tri--mid { stroke: rgba(59,130,246,0.28); }
.trimark-hero .tri--out { stroke: rgba(59,130,246,0.16); }
.trimark-hero .node { fill: var(--azure); }
.trimark-hero .node-core { fill: var(--signal); }
@media (prefers-reduced-motion: no-preference) {
  .trimark-hero .node-core { animation: pulseCore 3.6s var(--ease) infinite; }
  .trimark-hero .tri--inner { animation: triGlow 4s var(--ease) infinite; }
}
@keyframes pulseCore { 0%,100% { opacity: .55; } 50% { opacity: 1; } }
@keyframes triGlow { 0%,100% { stroke-opacity: .55; } 50% { stroke-opacity: 1; } }

/* ---- Trust strip ----------------------------------------------------- */
.trust-strip { border-block: 1px solid var(--border-soft); background: var(--space-deep); }
.trust-strip__inner {
  display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; align-items: center;
  padding-block: 16px;
  font-family: var(--font-sans); font-size: .72rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--text-dim); font-weight: 500;
}
.trust-strip__inner .sep { color: var(--azure); }

/* ---- Cards ----------------------------------------------------------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-top: 2px solid var(--azure);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 2.4vw, 30px);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
  display: flex; flex-direction: column;
}
.card--link:hover { border-color: var(--azure-line); transform: translateY(-2px); }
.card__kicker { font-family: var(--font-sans); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--text-dim); margin-bottom: .9rem; font-weight: 600; }
.card h3 { margin-bottom: .5rem; }
.card p { color: var(--text-muted); font-size: .98rem; line-height: 1.7; }
.card__foot { margin-top: auto; padding-top: 1.2rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }

/* vertical accent variants (Guide: Azure gov/AI, Teal edu/health, Amber advisory) */
.card--teal { border-top-color: var(--teal); }
.card--amber { border-top-color: var(--amber); }
.card--azure { border-top-color: var(--azure); }

/* Product card */
.pcard { position: relative; }
.pcard__price { font-family: var(--font-mono); font-size: 1.35rem; color: var(--text-strong); font-weight: 500; }
.pcard__price .cur { color: var(--text-muted); font-size: .9rem; }
.pcard__meta { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1rem; }

/* Badges */
.badge {
  display: inline-flex; align-items: center; gap: .35rem;
  font-family: var(--font-sans); font-size: .64rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 600;
  padding: .28rem .55rem; border-radius: 3px; border: 1px solid var(--border);
  color: var(--text-muted); background: var(--panel-2);
}
.badge--accent { color: var(--signal); border-color: var(--azure-line); background: var(--azure-wash); }
.badge--teal { color: var(--teal); border-color: rgba(0,148,136,.4); background: var(--teal-wash); }
.badge--amber { color: var(--amber); border-color: rgba(217,119,6,.4); background: var(--amber-wash); }

/* ---- Feature / list rows --------------------------------------------- */
.feature { display: flex; gap: 1rem; }
.feature__icon {
  flex: none; width: 36px; height: 36px; border-radius: 6px;
  border: 1px solid var(--azure-line); background: var(--azure-wash);
  display: grid; place-items: center; color: var(--signal);
}
.feature h3 { font-size: 1.1rem; margin-bottom: .3rem; }
.feature p { color: var(--text-muted); font-size: .96rem; margin: 0; line-height: 1.7; }

.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { position: relative; padding-left: 1.7rem; margin-bottom: .65rem; color: var(--text-muted); }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: .55em;
  width: 8px; height: 8px;
  background: var(--azure); transform: rotate(45deg);
  box-shadow: 0 0 0 3px var(--azure-wash);
}

/* ---- Steps ----------------------------------------------------------- */
.steps { counter-reset: step; display: grid; gap: 1.4rem; }
.step { display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: start; }
.step__num {
  counter-increment: step;
  font-family: var(--font-mono); font-size: .85rem; color: var(--signal);
  border: 1px solid var(--azure-line); border-radius: 4px;
  width: 38px; height: 38px; display: grid; place-items: center; flex: none;
}
.step__num::before { content: counter(step, decimal-leading-zero); }
.step h3 { font-size: 1.05rem; margin-bottom: .25rem; }
.step p { color: var(--text-muted); font-size: .96rem; margin: 0; }

/* ---- Leadership ------------------------------------------------------ */
.leader { text-align: left; }
.leader__photo {
  width: 100%; aspect-ratio: 1 / 1; object-fit: cover; object-position: center top;
  border-radius: var(--radius-lg); border: 1px solid var(--border);
  background: var(--panel-2);
}
.leader__photo--placeholder {
  display: grid; place-items: center; color: var(--text-dim);
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-align: center;
  border-style: dashed;
}
.leader__name { margin: 1rem 0 .15rem; font-size: 1.25rem; }
.leader__role { font-family: var(--font-sans); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--signal); margin-bottom: .7rem; font-weight: 600; }
.leader p { font-size: .95rem; color: var(--text-muted); line-height: 1.7; }

/* ---- Forms ----------------------------------------------------------- */
.form { display: grid; gap: 1.1rem; }
.form__row { display: grid; gap: 1.1rem; }
@media (min-width: 620px) { .form__row.two { grid-template-columns: 1fr 1fr; } }
.field { display: grid; gap: .4rem; }
.field label { font-family: var(--font-sans); font-size: .8rem; font-weight: 600; color: var(--text); letter-spacing: .02em; }
.field .req { color: var(--signal); }
.field input, .field select, .field textarea {
  font-family: var(--font-sans); font-size: 1rem; color: var(--text);
  background: var(--space-deep); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .75rem .85rem; width: 100%;
  transition: border-color .15s var(--ease), background .15s var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-dim); }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--signal); background: #0a1124; outline: none; }
.field textarea { min-height: 130px; resize: vertical; }
.field__hint { font-family: var(--font-sans); font-size: .76rem; color: var(--text-dim); }
.form__consent { display: flex; gap: .6rem; align-items: flex-start; font-family: var(--font-sans); font-size: .82rem; color: var(--text-muted); line-height: 1.6; }
.form__consent input { width: auto; margin-top: .2rem; }
.form__note { font-family: var(--font-sans); font-size: .8rem; color: var(--text-dim); }

/* ---- Notice / placeholder banners ------------------------------------ */
.notice {
  border: 1px solid var(--border); border-left: 3px solid var(--azure);
  background: var(--panel); border-radius: var(--radius);
  padding: 1rem 1.2rem; font-size: .95rem; color: var(--text-muted); line-height: 1.7;
}
.notice--draft { border-left-color: var(--amber); background: var(--amber-wash); }
.notice--draft strong { color: var(--amber); }
.notice__tag { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--amber); display: block; margin-bottom: .3rem; }

/* ---- CTA band -------------------------------------------------------- */
.band {
  background: linear-gradient(135deg, var(--cobalt) 0%, var(--space-deep) 100%);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: clamp(28px, 4vw, 52px);
  display: grid; grid-template-columns: 1.4fr auto; gap: 2rem; align-items: center;
}
@media (max-width: 760px) { .band { grid-template-columns: 1fr; } }

/* ---- Tables ---------------------------------------------------------- */
.tbl-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); }
table.tbl { width: 100%; border-collapse: collapse; font-size: .92rem; min-width: 560px; }
table.tbl th, table.tbl td { text-align: left; padding: .8rem 1rem; border-bottom: 1px solid var(--border-soft); }
table.tbl th { font-family: var(--font-sans); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); background: var(--space-deep); font-weight: 600; }
table.tbl td { color: var(--text-muted); }
table.tbl tr:last-child td { border-bottom: none; }

/* ---- FAQ ------------------------------------------------------------- */
.faq-item { border-bottom: 1px solid var(--border-soft); }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 1.2rem 0;
  font-family: var(--font-serif); font-weight: 700; color: var(--text-strong); font-size: 1.1rem;
  display: flex; justify-content: space-between; gap: 1rem; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .ico { color: var(--signal); transition: transform .2s var(--ease); flex: none; }
.faq-item[open] summary .ico { transform: rotate(45deg); }
.faq-item__body { padding: 0 0 1.3rem; color: var(--text-muted); max-width: 72ch; line-height: 1.75; }

/* ---- Breadcrumb ------------------------------------------------------ */
.crumbs { font-family: var(--font-sans); font-size: .72rem; letter-spacing: .08em; color: var(--text-dim); margin-bottom: 1.5rem; text-transform: uppercase; }
.crumbs a { color: var(--text-muted); }
.crumbs a:hover { color: var(--text-strong); }

/* ---- Footer ---------------------------------------------------------- */
.site-footer { background: var(--space-deep); border-top: 1px solid var(--border); padding-block: clamp(48px, 6vw, 72px) 0; }
.footer__grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 2rem; }
@media (max-width: 860px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer__grid { grid-template-columns: 1fr; } }
.footer__col h4 { font-family: var(--font-sans); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 1rem; font-weight: 600; }
.footer__col ul { list-style: none; padding: 0; margin: 0; }
.footer__col li { margin-bottom: .55rem; }
.footer__col a { font-family: var(--font-sans); color: var(--text-muted); font-size: .9rem; }
.footer__col a:hover { color: var(--text-strong); }
.footer__brand p { font-family: var(--font-serif); color: var(--text-muted); font-size: .95rem; max-width: 36ch; margin-top: 1rem; line-height: 1.7; }
.footer__legal {
  margin-top: clamp(36px, 5vw, 56px); border-top: 1px solid var(--border-soft);
  padding-block: 22px; display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; justify-content: space-between;
  font-family: var(--font-sans); font-size: .82rem; color: var(--text-dim);
}
.footer__legal a { color: var(--text-muted); }
.footer__legal .x-link { color: var(--text-muted); }
.footer__disclaimer { font-family: var(--font-sans); font-size: .78rem; color: var(--text-dim); max-width: 80ch; margin-top: .4rem; line-height: 1.6; }

/* ---- Misc ------------------------------------------------------------ */
.hr { border: none; border-top: 1px solid var(--border-soft); margin-block: clamp(36px,5vw,56px); }
.kicker-row { display: flex; align-items: center; gap: .8rem; margin-bottom: 1rem; }
.tag-inline { font-family: var(--font-sans); font-size: .72rem; color: var(--signal); letter-spacing: .12em; text-transform: uppercase; font-weight: 600; }
.stack-sm > * + * { margin-top: .6rem; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--azure); color: #fff; padding: .6rem 1rem; z-index: 100; border-radius: 0 0 4px 0; font-family: var(--font-sans); }
.skip-link:focus { left: 0; }

/* buybox on product pages */
.buybox {
  background: var(--panel); border: 1px solid var(--border); border-top: 2px solid var(--azure);
  border-radius: var(--radius-lg);
  padding: clamp(20px,2.4vw,28px); position: sticky; top: 96px;
}
.buybox__price { font-family: var(--font-mono); font-size: 2rem; color: var(--text-strong); font-weight: 500; line-height: 1; }
.buybox__price .cur { font-size: 1rem; color: var(--text-muted); vertical-align: super; }
.buybox__sub { font-family: var(--font-sans); font-size: .82rem; color: var(--text-dim); margin: .4rem 0 1.3rem; letter-spacing: .03em; }
.buybox ul { margin: 1.2rem 0; }
.buybox .micro { font-family: var(--font-sans); font-size: .76rem; color: var(--text-dim); margin-top: 1rem; line-height: 1.6; }
@media (max-width: 900px) { .buybox { position: static; } }

.product-layout { display: grid; grid-template-columns: 1fr 360px; gap: clamp(28px,4vw,56px); align-items: start; }
@media (max-width: 900px) { .product-layout { grid-template-columns: 1fr; } }