/* ============================================================
   TheCloudLogic HQ - design system
   Theme: "Drafting table" - institutional executive education.
   Fonts: Spectral (display serif), Public Sans (body),
          IBM Plex Mono (course codes / labels).
   No build step required. Edit tokens below to retheme.
   ============================================================ */

:root {
  --paper:      #F5F4EF;
  --paper-2:    #EDEBE2;
  --ink:        #1B2B3A;
  --ink-soft:   #2E4256;
  --muted:      #5B6B7A;
  --line:       #D8D4C8;
  --line-soft:  #E4E1D7;
  --copper:     #A85C2E;
  --copper-dk:  #8A4A22;
  --white:      #FFFFFF;
  --grid:       rgba(27, 43, 58, 0.055);
  --shadow:     0 18px 40px rgba(27, 43, 58, 0.10);

  --font-display: "Spectral", Georgia, "Times New Roman", serif;
  --font-body:    "Public Sans", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono:    "IBM Plex Mono", "Cascadia Mono", Consolas, monospace;

  color-scheme: light;
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--copper-dk); text-decoration: none; }
a:hover { color: var(--copper); }
:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
  border-radius: 2px;
}
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: var(--paper);
  padding: .6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 1.25rem; }
.wrap-narrow { max-width: 860px; margin: 0 auto; padding: 0 1.25rem; }

/* ---------- typography ---------- */
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.15; margin: 0; }
h1 { font-size: clamp(2.3rem, 5vw, 3.4rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.35rem); letter-spacing: -0.005em; }
h3 { font-size: 1.3rem; }
h4 { font-family: var(--font-body); font-weight: 700; font-size: 1.02rem; margin: 0; }
p { margin: 0; }
.lede { font-size: 1.17rem; color: var(--muted); line-height: 1.75; }
.small { font-size: .9rem; }
.muted { color: var(--muted); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--font-mono);
  font-size: .74rem; font-weight: 600;
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--copper-dk);
}
.eyebrow::before {
  content: ""; width: 1.6rem; height: 1px; background: var(--copper);
}

.mono { font-family: var(--font-mono); }

/* ---------- header / nav ---------- */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(245, 244, 239, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 74px;
}
.brand { display: inline-flex; align-items: center; gap: .7rem; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-mark { width: 34px; height: 34px; flex: none; }
.brand-name {
  font-family: var(--font-display); font-weight: 700;
  font-size: 1.22rem; letter-spacing: -0.01em; white-space: nowrap;
}
.brand-name .hq { font-family: var(--font-mono); font-weight: 600; color: var(--copper-dk); font-size: 1.05rem; }

.nav-links { display: flex; align-items: center; gap: 1.5rem; }
.nav-links a {
  color: var(--ink-soft); font-size: .95rem; font-weight: 500;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a[aria-current="page"] {
  color: var(--ink);
  border-bottom: 2px solid var(--copper);
  padding-bottom: 2px;
}
.nav-cta { margin-left: .25rem; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line);
  border-radius: 6px; padding: .45rem .6rem; cursor: pointer;
  font-family: var(--font-mono); font-size: .8rem; color: var(--ink);
}
@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; align-items: center; gap: .45rem; }
  .nav-links {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    display: none;
    padding: .5rem 1.25rem 1.1rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: .7rem 0; border-bottom: 1px solid var(--line-soft); }
  .nav-links a[aria-current="page"] { border-bottom: 1px solid var(--line-soft); color: var(--copper-dk); }
  .nav-cta { margin: .9rem 0 0; text-align: center; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font-family: var(--font-body); font-weight: 600; font-size: .97rem;
  padding: .8rem 1.35rem; border-radius: 4px; border: 1.5px solid var(--ink);
  cursor: pointer; transition: background .18s ease, color .18s ease, border-color .18s ease;
  text-align: center;
}
.btn-primary { background: var(--ink); color: #FFFFFF; }
.btn-primary:visited { color: #FFFFFF; }
.btn-primary:hover { background: var(--copper-dk); border-color: var(--copper-dk); color: #FFFFFF; }
.nav-cta.btn-primary { color: #FFFFFF; }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { border-color: var(--copper-dk); color: var(--copper-dk); }
.btn-sm { padding: .55rem 1rem; font-size: .9rem; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  border-bottom: 1px solid var(--line);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
}
.hero-inner { padding: 5rem 0 3.5rem; max-width: 780px; }
.hero h1 { margin-top: 1.1rem; }
.hero .lede { margin-top: 1.35rem; max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.1rem; }

/* drawing-sheet facts strip */
.titleblock {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1.5px solid var(--ink); background: var(--white);
  margin: 0 0 -2.6rem; position: relative; z-index: 2;
  box-shadow: var(--shadow);
}
.titleblock > div { padding: 1.1rem 1.25rem; border-right: 1px solid var(--line); }
.titleblock > div:last-child { border-right: 0; }
.titleblock .tb-label {
  font-family: var(--font-mono); font-size: .68rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--copper-dk);
}
.titleblock .tb-value { font-weight: 600; font-size: .95rem; margin-top: .3rem; line-height: 1.45; }
@media (max-width: 860px) {
  .titleblock { grid-template-columns: 1fr 1fr; }
  .titleblock > div:nth-child(2n) { border-right: 0; }
  .titleblock > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 480px) {
  .titleblock { grid-template-columns: 1fr; }
  .titleblock > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .titleblock > div:last-child { border-bottom: 0; }
}

/* ---------- sections ---------- */
.section { padding: 4.5rem 0; }
.section-tight { padding: 3rem 0; }
.section-alt { background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 680px; margin-bottom: 2.4rem; }
.section-head h2 { margin-top: .9rem; }
.section-head .lede { margin-top: .9rem; }

/* ---------- course cards (drawing title blocks) ---------- */
.cards { display: grid; gap: 1.4rem; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); }
.card {
  display: flex; flex-direction: column;
  background: var(--white);
  border: 1.5px solid var(--ink);
  transition: box-shadow .18s ease, transform .18s ease;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding: .7rem 1.2rem;
}
.card-code { font-family: var(--font-mono); font-weight: 600; font-size: .82rem; letter-spacing: .06em; }
.card-tier {
  font-family: var(--font-mono); font-size: .66rem; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--white); background: var(--copper-dk);
  padding: .22rem .55rem;
}
.card-body { padding: 1.2rem 1.2rem 1.35rem; flex: 1; }
.card-body h3 { font-size: 1.32rem; }
.card-body p { color: var(--muted); font-size: .96rem; margin-top: .6rem; }
.card-foot {
  display: flex; align-items: center; justify-content: space-between; gap: .8rem;
  border-top: 1px solid var(--line);
  padding: .85rem 1.2rem;
}
.card-price { font-family: var(--font-mono); font-weight: 600; font-size: .95rem; }
.card-price span { color: var(--muted); font-weight: 400; font-size: .78rem; }
.card-link { font-weight: 600; font-size: .93rem; white-space: nowrap; }
.card-link::after { content: " \2192"; }

/* ---------- feature grid ---------- */
.features { display: grid; gap: 1.4rem; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.feature { border-top: 2px solid var(--ink); padding-top: 1.1rem; }
.feature h3 { font-size: 1.18rem; }
.feature p { color: var(--muted); font-size: .96rem; margin-top: .55rem; }
.feature .f-kicker {
  font-family: var(--font-mono); font-size: .7rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--copper-dk);
  display: block; margin-bottom: .5rem;
}

/* ---------- checklists ---------- */
.list-check { list-style: none; margin: 1.2rem 0 0; padding: 0; }
.list-check li { position: relative; padding-left: 1.7rem; margin-bottom: .8rem; color: var(--ink-soft); }
.list-check li::before {
  content: ""; position: absolute; left: 0; top: .5em;
  width: .8rem; height: .45rem;
  border-left: 2px solid var(--copper-dk);
  border-bottom: 2px solid var(--copper-dk);
  transform: rotate(-45deg);
}

/* ---------- panels ---------- */
.panel { background: var(--white); border: 1px solid var(--line); padding: 2rem; }
.panel-ink { background: var(--ink); color: var(--paper); border: 0; padding: 2.4rem; }
.panel-ink h2, .panel-ink h3 { color: var(--white); }
.panel-ink p { color: rgba(245, 244, 239, .82); }
.panel-ink .btn-primary { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.panel-ink .btn-primary:hover { background: var(--copper); border-color: var(--copper); color: var(--white); }
.panel-ink .btn-ghost { color: var(--paper); border-color: rgba(245,244,239,.5); }
.panel-ink .btn-ghost:hover { border-color: var(--copper); color: var(--copper); }

.split { display: grid; gap: 1.6rem; grid-template-columns: 1.1fr .9fr; align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

/* ---------- course page ---------- */
.crumbs { font-family: var(--font-mono); font-size: .8rem; color: var(--muted); }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--copper-dk); }

.meta-strip {
  display: flex; flex-wrap: wrap; gap: 0;
  border: 1.5px solid var(--ink); background: var(--white);
  margin-top: 2.2rem;
}
.meta-strip > div {
  padding: .9rem 1.3rem; border-right: 1px solid var(--line);
  flex: 1 1 140px;
}
.meta-strip > div:last-child { border-right: 0; }
.meta-strip .m-label {
  font-family: var(--font-mono); font-size: .66rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--copper-dk);
}
.meta-strip .m-value { font-weight: 600; font-size: .95rem; margin-top: .25rem; }
@media (max-width: 720px) {
  .meta-strip { flex-direction: column; }
  .meta-strip > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .meta-strip > div:last-child { border-bottom: 0; }
}

.module { border: 1px solid var(--line); background: var(--white); margin-bottom: 1rem; }
.module-head {
  display: flex; align-items: baseline; gap: 1rem;
  padding: 1.05rem 1.3rem; border-bottom: 1px solid var(--line-soft);
}
.module-num {
  font-family: var(--font-mono); font-size: .8rem; font-weight: 600;
  color: var(--copper-dk); flex: none; letter-spacing: .05em;
}
.module-head h3 { font-size: 1.14rem; font-family: var(--font-body); font-weight: 700; }
.module-lessons { list-style: none; margin: 0; padding: .9rem 1.3rem 1.1rem 3.1rem; }
.module-lessons li {
  color: var(--muted); font-size: .95rem; padding: .32rem 0;
  border-bottom: 1px dashed var(--line-soft);
}
.module-lessons li:last-child { border-bottom: 0; }

/* ---------- FAQ ---------- */
.faq details { border: 1px solid var(--line); background: var(--white); margin-bottom: .8rem; }
.faq summary {
  cursor: pointer; padding: 1rem 1.3rem; font-weight: 600;
  list-style: none; position: relative; padding-right: 3rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 1.3rem; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono); color: var(--copper-dk); font-size: 1.1rem;
}
.faq details[open] summary::after { content: "\2212"; }
.faq .faq-body { padding: 0 1.3rem 1.15rem; color: var(--muted); }

/* ---------- forms ---------- */
.field { margin-bottom: 1.25rem; }
.field label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: .4rem; }
.field .hint { font-size: .82rem; color: var(--muted); margin-top: .35rem; }
input[type="text"], input[type="email"], select, textarea {
  width: 100%; font-family: var(--font-body); font-size: 1rem;
  color: var(--ink); background: var(--white);
  border: 1px solid var(--line); border-radius: 4px;
  padding: .75rem .9rem;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--copper-dk);
  box-shadow: 0 0 0 3px rgba(168, 92, 46, .15);
}
.field-row { display: grid; gap: 1rem; grid-template-columns: 1fr 1fr; }
@media (max-width: 640px) { .field-row { grid-template-columns: 1fr; } }
.hidden { display: none; }
.hp { position: absolute; left: -9999px; }

/* ---------- article / prose ---------- */
.prose { max-width: 760px; }
.prose h2 { margin: 2.6rem 0 1rem; }
.prose h3 { margin: 2rem 0 .8rem; }
.prose p { margin: 0 0 1.15rem; color: var(--ink-soft); }
.prose ul { margin: 0 0 1.15rem; padding-left: 1.3rem; color: var(--ink-soft); }
.prose li { margin-bottom: .5rem; }

table.data { width: 100%; border-collapse: collapse; border: 1.5px solid var(--ink); background: var(--white); font-size: .95rem; }
table.data th, table.data td { padding: .8rem 1rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
table.data th { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; background: var(--paper-2); }
table.data td:first-child { font-weight: 600; }
.table-scroll { overflow-x: auto; }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: rgba(245,244,239,.75); margin-top: 4rem; }
.footer-inner { padding: 3.2rem 0 2rem; display: grid; gap: 2.5rem; grid-template-columns: 1.4fr 1fr 1fr; }
@media (max-width: 820px) { .footer-inner { grid-template-columns: 1fr; } }
.site-footer .brand { color: var(--paper); }
.site-footer .brand-name .hq { color: var(--copper); }
.site-footer p { font-size: .92rem; max-width: 46ch; }
.site-footer h4 { color: var(--white); font-size: .85rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: .9rem; font-family: var(--font-mono); font-weight: 600; }
.footer-links a { display: block; color: rgba(245,244,239,.72); font-size: .93rem; padding: .28rem 0; }
.footer-links a:hover { color: var(--copper); }
.footer-base {
  border-top: 1px solid rgba(245,244,239,.16);
  padding: 1.2rem 0 1.6rem;
  display: flex; flex-wrap: wrap; gap: .6rem; justify-content: space-between;
  font-size: .8rem; color: rgba(245,244,239,.55);
}

/* ---------- utilities ---------- */
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }  .mt-5 { margin-top: 2.5rem; } .mt-6 { margin-top: 3rem; }
.center { text-align: center; }
.notice { border-left: 3px solid var(--copper); background: var(--white); padding: 1.1rem 1.3rem; color: var(--muted); font-size: .93rem; }