/* ============================================================
   theme-blueprint-technique.css — Engineering blueprint / Bauhaus
   For : nettoyage-toit-gouttieres.be + toiture-facades-renov.be
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=IBM+Plex+Sans:wght@300;400;500;600;700&display=swap');

:root {
  --bg:           #ECEEF1;          /* pale blueprint paper */
  --bg-alt:       #DCE0E5;
  --bg-deep:      #C9CDD3;
  --line:         #6B7280;          /* engineering line gray */
  --line-light:   #A6ADB6;
  --ink:          #0B1620;          /* dark navy ink */
  --ink-mute:     #3B4A5A;
  --ink-soft:     #6E7786;

  --accent:       #1B4F8B;          /* engineering blue */
  --accent-deep:  #103562;
  --accent-soft:  #6B92BB;
  --signal:       #C45A30;          /* warning orange — used sparingly */

  --mono: 'IBM Plex Mono', 'Courier New', monospace;
  --sans: 'IBM Plex Sans', 'Helvetica Neue', sans-serif;
}

/* ─── Override Tailwind / Claude defaults ─── */
.rounded, .rounded-sm, .rounded-md, .rounded-lg, .rounded-xl, .rounded-2xl, .rounded-3xl { border-radius: 0 !important; }
.rounded-full { border-radius: 50% !important; }
.shadow-sm, .shadow, .shadow-md, .shadow-lg, .shadow-xl, .shadow-2xl { box-shadow: none !important; }
[class*="bg-gradient-"] { background: var(--bg) !important; }

.text-blue-600, .text-blue-700, .text-cyan-500, .text-teal-500,
.text-orange-500, .text-yellow-500, .text-green-600 { color: var(--accent) !important; }
.bg-blue-50, .bg-blue-100, .bg-cyan-50, .bg-orange-50,
.bg-yellow-50, .bg-green-50 { background: var(--bg-alt) !important; }
.bg-blue-600, .bg-blue-700, .bg-orange-500, .bg-green-600,
.bg-teal-600 { background: var(--accent) !important; }
.border-gray-100, .border-gray-200, .border-gray-300,
.border-blue-200, .border-orange-200 { border-color: var(--line-light) !important; }

/* ─── Engineering paper background grid ─── */
html, body {
  font-family: var(--sans); color: var(--ink); background: var(--bg);
  background-image:
    linear-gradient(to right, rgba(107,114,128,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(107,114,128,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}

h1, h2, h3, h4, h5, h6,
.text-2xl, .text-3xl, .text-4xl, .text-5xl, .text-6xl,
.text-xl.font-bold, .text-xl.font-extrabold {
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: -0.018em;
  line-height: 1.18;
  color: var(--ink);
  text-transform: none;
}
.font-bold, .font-extrabold, .font-black { font-weight: 600 !important; }

body { font-size: 16px; line-height: 1.55; }

a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--ink); }

/* ─── Containers ─── */
.bp-container { max-width: 76rem; margin: 0 auto; padding: 0 1.5rem; }
.bp-prose { max-width: 38rem; margin: 0 auto; padding: 0 1.5rem; }

/* ─── Masthead — drafter's title block ─── */
.bp-masthead {
  background: var(--ink); color: var(--bg);
  padding: 0.6rem 0;
  border-bottom: 4px solid var(--accent);
  position: sticky; top: 0; z-index: 50;
}
.bp-masthead-inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.bp-logo {
  font-family: var(--mono); font-size: 0.95rem; font-weight: 600;
  letter-spacing: 0.04em; color: var(--bg);
  text-decoration: none !important;
  display: flex; align-items: center; gap: 0.7rem;
}
.bp-logo::before {
  content: "▲"; color: var(--accent-soft);
  font-size: 1.1rem;
}
.bp-logo-rev {
  font-family: var(--mono); font-size: 0.7rem;
  color: var(--accent-soft); letter-spacing: 0.18em;
  border-left: 1px solid rgba(255,255,255,0.25);
  padding-left: 0.7rem; margin-left: 0.5rem;
}

.bp-nav { display: flex; gap: 1.8rem; align-items: center; }
.bp-nav a {
  font-family: var(--mono); font-size: 0.78rem;
  font-weight: 500; letter-spacing: 0.06em;
  color: var(--bg-alt);
  text-decoration: none !important; text-transform: uppercase;
  transition: color 0.18s ease;
}
.bp-nav a:hover { color: var(--accent-soft); }

.bp-lang {
  display: flex; padding-right: 1rem; margin-right: 0.5rem;
  border-right: 1px solid rgba(255,255,255,0.2);
}
.bp-lang-link {
  font-family: var(--mono); font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.16em; color: rgba(245,244,240,0.55);
  padding: 0.3rem 0.5rem;
  text-decoration: none !important;
}
.bp-lang-link.active { color: var(--accent-soft); border-bottom: 2px solid var(--accent-soft); }
.bp-lang-link:hover { color: var(--bg); }

.bp-nav-cta {
  font-family: var(--mono); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.04em;
  background: var(--accent); color: var(--bg) !important;
  padding: 0.55rem 1.1rem;
  text-decoration: none !important; text-transform: uppercase;
}
.bp-nav-cta:hover { background: var(--signal); }

/* ─── Hero — technical drawing ─── */
.bp-hero {
  padding: 5rem 0;
  border-bottom: 1px solid var(--line-light);
  position: relative;
}
.bp-hero-tag {
  display: inline-block;
  font-family: var(--mono); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--bg);
  background: var(--accent);
  padding: 0.3rem 0.8rem;
  margin-bottom: 1.5rem;
}
.bp-hero-title {
  font-family: var(--sans);
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0 0 1.5rem;
  color: var(--ink);
  max-width: 22ch;
}
.bp-hero-title .hl {
  background: var(--accent); color: var(--bg);
  padding: 0 0.4rem;
}
.bp-hero-deck {
  font-family: var(--mono); font-size: 1rem;
  line-height: 1.55; color: var(--ink-mute);
  max-width: 46rem; margin: 0 0 2rem;
}
.bp-hero-meta {
  font-family: var(--mono); font-size: 0.78rem;
  color: var(--ink-soft); letter-spacing: 0.04em;
  border-top: 1px solid var(--line-light);
  padding-top: 1rem; margin-top: 2rem;
  display: flex; gap: 2rem; flex-wrap: wrap;
}
.bp-hero-meta strong { color: var(--ink); font-weight: 600; }

/* ─── Section header — engineering callout ─── */
.bp-section-head {
  display: flex; align-items: end; justify-content: space-between;
  border-bottom: 2px solid var(--ink);
  padding: 1rem 0 0.6rem;
  margin: 4rem 0 2.5rem;
}
.bp-section-num {
  font-family: var(--mono); font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--accent);
}
.bp-section-title {
  font-family: var(--sans); font-size: 1.7rem;
  font-weight: 600; margin: 0;
  letter-spacing: -0.012em;
}
.bp-section-rev {
  font-family: var(--mono); font-size: 0.65rem;
  color: var(--ink-soft); letter-spacing: 0.14em;
}

/* ─── Spec cards — drafting style ─── */
.bp-specs {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0;
}
.bp-spec {
  background: var(--bg);
  border: 1px solid var(--line-light);
  margin: -1px 0 0 -1px;
  padding: 1.5rem 1.25rem;
  text-decoration: none !important;
  color: inherit;
  transition: background 0.2s ease;
  position: relative;
}
.bp-spec:hover { background: var(--bg-alt); }
.bp-spec:hover .bp-spec-title { color: var(--accent); }
.bp-spec-num {
  font-family: var(--mono); font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.18em; color: var(--accent);
  margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.6rem;
}
.bp-spec-num::before { content: ""; width: 24px; height: 1px; background: var(--accent); }
.bp-spec-title {
  font-family: var(--sans); font-size: 1.15rem;
  font-weight: 600; margin: 0 0 0.4rem;
  line-height: 1.25; color: var(--ink);
  transition: color 0.2s ease;
}
.bp-spec-deck {
  font-family: var(--mono); font-size: 0.82rem;
  line-height: 1.5; color: var(--ink-mute); margin: 0;
}

/* ─── Articles — drafted layout ─── */
.bp-doc-list { display: flex; flex-direction: column; }
.bp-doc {
  display: grid; grid-template-columns: 8rem 1fr 12rem;
  gap: 2rem; align-items: center;
  padding: 1.75rem 0;
  border-top: 1px solid var(--line-light);
  text-decoration: none !important; color: inherit;
  transition: background 0.2s ease;
}
.bp-doc:hover { background: var(--bg-alt); padding-left: 1rem; padding-right: 1rem; }
.bp-doc:hover .bp-doc-title { color: var(--accent); }
.bp-doc:last-child { border-bottom: 1px solid var(--line-light); }
.bp-doc-id {
  font-family: var(--mono); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent);
}
.bp-doc-id-line {
  font-size: 0.65rem; color: var(--ink-soft); margin-top: 0.2rem;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.bp-doc-title {
  font-family: var(--sans); font-size: 1.35rem;
  font-weight: 500; line-height: 1.25;
  color: var(--ink); margin: 0;
  transition: color 0.2s ease;
}
.bp-doc-deck { font-family: var(--mono); font-size: 0.85rem; color: var(--ink-mute); margin: 0.4rem 0 0; }
.bp-doc-meta {
  font-family: var(--mono); font-size: 0.75rem;
  color: var(--ink-soft); letter-spacing: 0.04em;
  text-align: right;
}

/* ─── Stats — gauge cluster ─── */
.bp-gauges {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  border: 1px solid var(--line);
  margin: 3rem 0;
}
.bp-gauge { padding: 1.6rem 1.5rem; border-right: 1px solid var(--line-light); }
.bp-gauge:last-child { border-right: none; }
.bp-gauge-label {
  font-family: var(--mono); font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-soft); margin: 0 0 0.5rem;
}
.bp-gauge-num {
  font-family: var(--sans); font-size: 2.8rem;
  font-weight: 600; line-height: 1;
  color: var(--accent); letter-spacing: -0.02em;
  margin: 0 0 0.3rem;
}
.bp-gauge-unit {
  font-family: var(--mono); font-size: 0.78rem;
  color: var(--ink-mute);
}

/* ─── Buttons ─── */
.bp-button {
  font-family: var(--mono); font-size: 0.85rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  background: var(--accent); color: var(--bg) !important;
  padding: 0.85rem 1.6rem;
  border: none;
  text-decoration: none !important;
  display: inline-block;
  transition: background 0.2s ease;
  cursor: pointer;
}
.bp-button:hover { background: var(--ink); }
.bp-button-ghost {
  background: transparent; color: var(--accent) !important;
  border: 1px solid var(--accent);
}
.bp-button-ghost:hover { background: var(--accent); color: var(--bg) !important; }
.bp-link-arrow {
  font-family: var(--mono); font-size: 0.85rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--accent); text-decoration: none !important;
  border-bottom: 2px solid var(--accent); padding-bottom: 2px;
}
.bp-link-arrow::after { content: " ──→"; letter-spacing: 0; }

/* ─── Form — spec sheet ─── */
.bp-form {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 2.5rem 2rem;
  position: relative;
}
.bp-form::before {
  content: "SPEC FORM · REV 2026.05";
  position: absolute; top: -0.6rem; left: 1.5rem;
  background: var(--bg); padding: 0 0.6rem;
  font-family: var(--mono); font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.18em; color: var(--accent);
}
.bp-form-title {
  font-family: var(--sans); font-size: 1.6rem;
  font-weight: 600; margin: 0 0 0.5rem;
}
.bp-input, .bp-select, .bp-textarea {
  width: 100%; font-family: var(--mono); font-size: 0.95rem;
  padding: 0.7rem 0.9rem;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink); margin-bottom: 1.25rem;
  border-radius: 0 !important;
}
.bp-input:focus, .bp-select:focus, .bp-textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft) !important;
}
.bp-label {
  display: block; font-family: var(--mono); font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-mute); margin-bottom: 0.4rem;
}

/* ─── Footer — title block ─── */
.bp-footer {
  border-top: 4px solid var(--accent);
  padding: 3.5rem 0 2rem;
  margin-top: 6rem;
  background: var(--ink); color: var(--bg);
}
.bp-footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem; margin-bottom: 2.5rem;
}
.bp-footer-title {
  font-family: var(--mono); font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent-soft); margin: 0 0 1rem;
}
.bp-footer-list { list-style: none; padding: 0; margin: 0; }
.bp-footer-list li { margin-bottom: 0.5rem; }
.bp-footer-list a {
  font-family: var(--mono); font-size: 0.85rem;
  color: rgba(236,238,241,0.7); text-decoration: none !important;
}
.bp-footer-list a:hover { color: var(--accent-soft); }
.bp-footer-rev {
  border-top: 1px solid rgba(236,238,241,0.15);
  padding-top: 1.5rem;
  font-family: var(--mono); font-size: 0.72rem;
  letter-spacing: 0.06em; color: rgba(236,238,241,0.5);
  text-align: center;
}

@media (max-width: 768px) {
  .bp-hero-title { font-size: 2.2rem; }
  .bp-doc { grid-template-columns: 1fr; gap: 0.5rem; padding: 1.5rem 0; }
  .bp-doc-meta { text-align: left; }
  .bp-footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .bp-gauges { grid-template-columns: 1fr 1fr; }
  .bp-gauge { border-right: none; border-bottom: 1px solid var(--line-light); }
}