/* =========================================================
   M K Builder Remodeler — Design Tokens
   Palette:  #F6F1E7 paper / #211D1A ink / #1F2421 charcoal
             #B5622A rust (brick accent) / #4A5859 steel
             #D8CFBF hairline
   Type:     Zilla Slab (display) / Inter (body) / IBM Plex Mono (utility)
   Signature: blueprint dimension-lines + corner-bracket frames
   ========================================================= */

:root {
  --paper: #F6F1E7;
  --ink: #211D1A;
  --charcoal: #1F2421;
  --charcoal-2: #262b28;
  --rust: #B5622A;
  --rust-dark: #954c1e;
  --steel: #4A5859;
  --line: #D8CFBF;
  --line-on-dark: rgba(246, 241, 231, 0.22);
  --paper-dim: #EFE8D9;

  --font-display: "Zilla Slab", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --radius: 3px;
  --max-w: 1160px;
  --shadow: 0 12px 28px -14px rgba(33, 29, 26, 0.35);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--rust-dark); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
a:hover { color: var(--rust); }
a:focus-visible, button:focus-visible {
  outline: 2.5px solid var(--rust);
  outline-offset: 3px;
}

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 12px 18px;
  z-index: 200;
}
.skip-link:focus { left: 12px; top: 12px; }

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.1rem);
  margin: 2.6em 0 0.7em;
  padding-top: 0.2em;
  border-top: 1px solid var(--line);
}
.article h2:first-of-type { margin-top: 1.4em; }

p { margin: 0 0 1.15em; color: #322c26; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rust-dark);
  margin: 0 0 0.9em;
}
.eyebrow-light { color: var(--paper-dim); opacity: 0.85; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  padding: 13px 26px;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--rust); color: #fff; }
.btn-primary:hover { background: var(--rust-dark); color: #fff; }
.btn-outline { background: transparent; border-color: var(--ink); color: var(--ink); }
.btn-outline:hover { border-color: var(--rust); color: var(--rust-dark); }
.btn-ghost { background: transparent; color: var(--paper); border-color: var(--line-on-dark); font-family: var(--font-mono); font-size: 0.9rem; padding: 9px 16px; }
.btn-ghost:hover { border-color: var(--paper); color: var(--paper); }
.btn-block { width: 100%; }

/* ===== Header ===== */
.site-header {
  background: var(--charcoal);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--line-on-dark);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
  text-decoration: none;
}
.brand-mark { color: var(--rust); flex-shrink: 0; }
.brand-text {
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.2;
  font-weight: 600;
}
.brand-text em { font-style: normal; color: var(--line-on-dark); font-weight: 400; font-size: 0.85em; }

.main-nav {
  margin-left: auto;
  display: flex;
  gap: 28px;
}
.main-nav a {
  color: var(--paper);
  opacity: 0.82;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}
.main-nav a:hover { opacity: 1; color: var(--rust); }

.header-cta { margin-left: 8px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1.5px solid var(--line-on-dark);
  border-radius: var(--radius);
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 18px;
  margin: 0 auto;
  background: var(--paper);
}

/* ===== Hero ===== */
.hero {
  background:
    radial-gradient(ellipse at top right, rgba(181, 98, 42, 0.10), transparent 55%),
    var(--paper);
  padding: 76px 0 56px;
  position: relative;
}
.hero-inner { max-width: 760px; }
.hero h1 {
  font-size: clamp(2.1rem, 1.6rem + 2.6vw, 3.4rem);
  margin: 0 0 22px;
}
.dim-rule {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 14px;
  margin-bottom: 26px;
}
.dim-rule span { display: block; width: 1.5px; height: 100%; background: var(--rust); opacity: 0.55; }
.dim-rule::before, .dim-rule::after { content: ""; flex: 1; height: 1.5px; background: var(--rust); opacity: 0.55; }
.hero-lede { font-size: 1.12rem; color: #443c34; max-width: 60ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }

/* ===== Content grid ===== */
.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 56px;
  padding: 20px 24px 40px;
}

.article { max-width: 68ch; }
.article a { font-weight: 600; }

.sidebar { display: flex; flex-direction: column; gap: 24px; }

.ledger {
  position: relative;
  background: var(--paper-dim);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px 24px;
}
/* corner-bracket registration marks — blueprint signature */
.ledger::before, .ledger::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--rust);
  opacity: 0.65;
}
.ledger::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.ledger::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.ledger h3 {
  font-size: 1.05rem;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}
.ledger dl { margin: 0 0 20px; }
.ledger-row { padding: 10px 0; border-top: 1px dashed var(--line); }
.ledger-row:first-child { border-top: none; }
.ledger-row dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
  margin: 0 0 4px;
}
.ledger-row dd { margin: 0; font-size: 0.94rem; color: var(--ink); }

.stage-list {
  margin: 0;
  padding-left: 1.2em;
  font-size: 0.94rem;
  color: #322c26;
}
.stage-list li { margin-bottom: 8px; }
.stage-list li::marker { color: var(--rust); font-family: var(--font-mono); font-weight: 600; }

/* ===== Contact ===== */
.contact {
  background: var(--charcoal);
  color: var(--paper);
  padding: 68px 0;
  margin-top: 24px;
}
.contact-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.contact-copy h2 { color: var(--paper); font-size: clamp(1.6rem, 1.3rem + 1.3vw, 2.2rem); margin: 0 0 14px; }
.contact-copy p { color: var(--line-on-dark); }
.contact-copy p:last-child { color: #cfc9bb; opacity: 0.95; margin-bottom: 0; }

.contact-card {
  background: var(--charcoal-2);
  border: 1px solid var(--line-on-dark);
  border-radius: var(--radius);
  padding: 28px;
}
.contact-list { list-style: none; margin: 0 0 22px; padding: 0; }
.contact-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 13px 0;
  border-top: 1px dashed var(--line-on-dark);
  flex-wrap: wrap;
}
.contact-list li:first-child { border-top: none; }
.contact-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9fa9a3;
}
.contact-list a, .contact-list span:not(.contact-label) {
  color: var(--paper);
  text-decoration: none;
  font-weight: 600;
}
.contact-list a:hover { color: var(--rust); }

/* ===== Footer ===== */
.site-footer {
  background: var(--charcoal);
  border-top: 1px solid var(--line-on-dark);
  padding: 22px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #9fa9a3;
  font-size: 0.85rem;
}
.back-to-top { color: #9fa9a3; text-decoration: none; }
.back-to-top:hover { color: var(--rust); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .content-grid { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; flex-wrap: wrap; }
  .ledger { flex: 1 1 280px; }
  .contact-inner { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 760px) {
  .main-nav, .header-cta { display: none; }
  .nav-toggle { display: flex; }

  .site-header.nav-open .main-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--charcoal);
    padding: 12px 24px 20px;
    border-bottom: 1px solid var(--line-on-dark);
    gap: 4px;
  }
  .site-header.nav-open .main-nav a { padding: 10px 0; }
  .site-header.nav-open .header-cta {
    display: inline-flex;
    margin: 4px 24px 18px;
  }

  .hero { padding: 52px 0 40px; }
  .content-grid { padding: 8px 20px 28px; gap: 34px; }
  .sidebar { flex-direction: column; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 420px) {
  .hero-actions .btn { width: 100%; }
}