/* ==========================================================
   MATTERIO — Design-Tokens
   ========================================================== */
:root {
  --paper: #F1F3EF;
  --paper-dim: #E7EAE3;
  --ink: #16211D;
  --ink-soft: #4B5750;
  --blue: #2E5EAA;
  --rust: #C4592A;
  --line: #C9D0C4;
  --line-strong: #9AA69C;

  --font-mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", "Roboto Mono", Consolas, "Liberation Mono", Menlo, monospace;
  --font-sans: -apple-system, "Segoe UI", system-ui, Roboto, Helvetica, Arial, sans-serif;

  --wrap: 1180px;
  --radius: 2px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(22,33,29,0.045) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(22,33,29,0.045) 40px),
    var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; font-family: var(--font-mono); font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: var(--paper);
  padding: 10px 16px; font-family: var(--font-mono); font-size: 13px;
  z-index: 200;
}
.skip-link:focus { left: 12px; top: 12px; }

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

/* ==========================================================
   Registrierkreuze / Randnotiz (Signature Element)
   ========================================================== */
.reg-mark {
  position: fixed;
  width: 22px; height: 22px;
  z-index: 150;
  pointer-events: none;
  opacity: 0.55;
  animation: breathe 7s ease-in-out infinite;
}
.reg-mark::before, .reg-mark::after {
  content: ""; position: absolute; background: var(--ink);
}
.reg-mark::before { top: 50%; left: 0; width: 100%; height: 1px; transform: translateY(-50%); }
.reg-mark::after { left: 50%; top: 0; height: 100%; width: 1px; transform: translateX(-50%); }
.reg-mark--tl { top: 18px; left: 18px; }
.reg-mark--br { bottom: 18px; right: 18px; animation-delay: 3.5s; }

@keyframes breathe {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.75; }
}

.margin-note {
  position: fixed;
  right: 10px; top: 50%;
  transform: translateY(-50%) rotate(90deg);
  transform-origin: right center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--line-strong);
  z-index: 150;
  pointer-events: none;
  white-space: nowrap;
}
@media (max-width: 900px) {
  .reg-mark, .margin-note { display: none; }
}

/* ==========================================================
   Header
   ========================================================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(241,243,239,0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; gap: 32px;
  height: 68px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-weight: 600;
  font-size: 15px; letter-spacing: 0.06em;
  text-decoration: none; color: var(--ink);
  margin-right: auto;
}
.logo-mark {
  width: 12px; height: 12px;
  border: 2px solid var(--ink);
  position: relative;
}
.logo-mark::after {
  content: ""; position: absolute; inset: 3px; background: var(--rust);
}
.main-nav { display: flex; gap: 26px; }
.main-nav a {
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.main-nav a:hover { color: var(--ink); border-color: var(--rust); }

.nav-toggle { display: none; }

/* ==========================================================
   Buttons
   ========================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 13px; letter-spacing: 0.04em;
  text-decoration: none;
  padding: 13px 22px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.15s;
  cursor: pointer;
}
.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover { background: var(--rust); border-color: var(--rust); transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { border-color: var(--rust); color: var(--rust); }
.btn--small { padding: 9px 16px; font-size: 12px; }
.btn--block { width: 100%; margin-top: 18px; }

/* ==========================================================
   Hero
   ========================================================== */
.hero { padding: 96px 0 88px; }
.hero-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr;
  gap: 56px; align-items: center;
}
.spec-tag {
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 0.1em; color: var(--blue);
  margin-bottom: 22px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.hero-title {
  font-size: clamp(2.4rem, 5.2vw, 4rem);
  line-height: 1.04;
  margin-bottom: 22px;
}
.hero-sub {
  font-size: 17px; color: var(--ink-soft); max-width: 46ch;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 44px; }

.hero-specs {
  display: flex; gap: 32px; flex-wrap: wrap;
  padding-top: 22px; border-top: 1px solid var(--line);
  margin: 0;
}
.hero-specs > div { display: flex; flex-direction: column; gap: 4px; }
.hero-specs dt {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  color: var(--line-strong); text-transform: uppercase;
}
.hero-specs dd { margin: 0; font-size: 14px; color: var(--ink); font-weight: 500; }

.blueprint-svg { width: 100%; height: auto; }
.svg-label { font-family: var(--font-mono); font-size: 9px; fill: var(--line-strong); letter-spacing: 0.05em; }
.draw-in {
  stroke-dasharray: 700;
  stroke-dashoffset: 700;
  animation: draw 1.1s ease-out forwards;
  animation-delay: var(--d);
}
@keyframes draw { to { stroke-dashoffset: 0; } }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-diagram { order: -1; max-width: 320px; margin: 0 auto; }
}

/* ==========================================================
   Dimension divider
   ========================================================== */
.dim-divider {
  display: flex; align-items: center; gap: 14px;
  margin: 0 0 40px;
}
.dim-line { flex: 1; height: 1px; background: var(--line-strong); position: relative; }
.dim-line::before, .dim-line::after {
  content: ""; position: absolute; top: -4px; width: 1px; height: 9px; background: var(--line-strong);
}
.dim-line::before { left: 0; }
.dim-line::after { right: 0; }
.dim-label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--ink-soft); white-space: nowrap;
}
.dim-divider--light .dim-line,
.dim-divider--light .dim-line::before,
.dim-divider--light .dim-line::after { background: rgba(241,243,239,0.35); }
.dim-divider--light .dim-label { color: rgba(241,243,239,0.7); }

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.2;
  max-width: 24ch;
  margin-bottom: 44px;
}
.section-title--light { color: var(--paper); }

/* ==========================================================
   Ansatz
   ========================================================== */
.approach { padding: 20px 0 88px; }
.approach-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 40px; }
.approach-lead {
  font-family: var(--font-mono); font-size: 20px; font-weight: 500;
  line-height: 1.35; color: var(--ink);
}
.approach-body { font-size: 16px; color: var(--ink-soft); max-width: 58ch; }
@media (max-width: 800px) { .approach-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   Services / Part cards
   ========================================================== */
.services { padding: 40px 0 96px; }
.card-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
}
.part-card {
  position: relative;
  background: var(--paper);
  padding: 30px 28px 26px;
  transition: background 0.2s;
}
.part-card:hover { background: var(--paper-dim); }
.part-card--accent { background: var(--ink); color: var(--paper); }
.part-card--accent:hover { background: #1f2e28; }
.part-card--accent .part-card__spec,
.part-card--accent .part-card__no { color: rgba(241,243,239,0.55); }
.part-card--accent p:not(.part-card__no):not(.part-card__spec) { color: rgba(241,243,239,0.82); }

.part-card__tick { position: absolute; width: 10px; height: 10px; opacity: 0; transition: opacity 0.25s; }
.part-card__tick--tl { top: 10px; left: 10px; border-top: 1.5px solid var(--rust); border-left: 1.5px solid var(--rust); }
.part-card__tick--br { bottom: 10px; right: 10px; border-bottom: 1.5px solid var(--rust); border-right: 1.5px solid var(--rust); }
.part-card:hover .part-card__tick { opacity: 1; }

.part-card__no {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em;
  color: var(--blue); margin-bottom: 18px;
}
.part-card__icon { width: 32px; height: 32px; color: var(--ink); margin-bottom: 16px; }
.part-card--accent .part-card__icon { color: var(--paper); }
.part-card h3 { font-size: 17px; margin-bottom: 10px; line-height: 1.3; }
.part-card p:not(.part-card__no):not(.part-card__spec) { font-size: 14.5px; color: var(--ink-soft); line-height: 1.55; margin-bottom: 18px; }
.part-card__spec {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.1em;
  color: var(--line-strong); border-top: 1px solid var(--line); padding-top: 12px;
}
.part-card--accent .part-card__spec { border-top-color: rgba(241,243,239,0.2); }

@media (max-width: 700px) { .card-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   Prozess
   ========================================================== */
.process { padding: 40px 0 96px; }
.process-line {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  position: relative;
}
.process-line::before {
  content: "";
  position: absolute; top: 11px; left: 4%; right: 4%; height: 1px;
  background: repeating-linear-gradient(90deg, var(--line-strong) 0 6px, transparent 6px 12px);
}
.process-step { position: relative; padding: 0 24px 0 0; }
.process-step__no {
  display: inline-block;
  font-family: var(--font-mono); font-size: 13px; font-weight: 600;
  color: var(--paper); background: var(--ink);
  width: 24px; height: 24px; line-height: 24px; text-align: center;
  margin-bottom: 20px; position: relative; z-index: 2;
}
.process-step h3 { font-size: 16px; margin-bottom: 10px; }
.process-step p { font-size: 14.5px; color: var(--ink-soft); max-width: 32ch; }
@media (max-width: 800px) {
  .process-line { grid-template-columns: 1fr; gap: 32px; }
  .process-line::before { display: none; }
}

/* ==========================================================
   Über uns
   ========================================================== */
.about { padding: 40px 0 96px; }
.about-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 40px; }
.about-list { margin-top: 20px; display: flex; flex-direction: column; gap: 10px; }
.about-list li {
  font-size: 14.5px; color: var(--ink-soft);
  padding-left: 20px; position: relative;
}
.about-list li::before {
  content: ""; position: absolute; left: 0; top: 7px;
  width: 7px; height: 7px; border: 1.5px solid var(--rust);
}
@media (max-width: 800px) { .about-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   Kontakt
   ========================================================== */
.contact { background: var(--ink); color: var(--paper); padding: 96px 0; }
.contact-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: start; }
.contact-lead { font-size: 16px; color: rgba(241,243,239,0.72); max-width: 46ch; }
.contact-card {
  background: rgba(241,243,239,0.04);
  border: 1px solid rgba(241,243,239,0.22);
  padding: 28px;
}
.contact-card__label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em;
  color: rgba(241,243,239,0.5); text-transform: uppercase;
  margin-top: 18px;
}
.contact-card__label:first-child { margin-top: 0; }
.contact-card__value {
  display: block; font-size: 17px; margin-top: 6px;
  text-decoration: none; color: var(--paper);
}
a.contact-card__value:hover { color: var(--rust); }
.contact-card .btn--primary { background: var(--rust); border-color: var(--rust); color: var(--paper); }
.contact-card .btn--primary:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }

@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   Footer
   ========================================================== */
.site-footer { padding: 26px 0; border-top: 1px solid var(--line); }
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft);
  flex-wrap: wrap; gap: 10px;
}
.footer-inner a { text-decoration: none; }
.footer-inner a:hover { color: var(--rust); }
.footer-links { display: flex; gap: 20px; }

/* ==========================================================
   Legal pages (Impressum / Datenschutz)
   ========================================================== */
.legal { padding: 64px 0 96px; }
.legal-header { margin-bottom: 48px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.legal-title { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 10px; }
.legal-back { font-family: var(--font-mono); font-size: 12.5px; color: var(--blue); text-decoration: none; }
.legal-back:hover { color: var(--rust); }
.legal-content { max-width: 68ch; }
.legal-content h2 {
  font-size: 15px; letter-spacing: 0.04em; margin: 40px 0 12px;
  padding-bottom: 8px; border-bottom: 1px solid var(--line);
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content p { color: var(--ink-soft); font-size: 15px; margin-bottom: 14px; }
.legal-content ul { margin: 0 0 14px; padding-left: 20px; list-style: disc; }
.legal-content li { color: var(--ink-soft); font-size: 15px; margin-bottom: 6px; }
.legal-content a { color: var(--blue); }
.legal-content a:hover { color: var(--rust); }
.legal-meta {
  font-family: var(--font-mono); font-size: 13px; color: var(--ink);
  background: var(--paper-dim); border: 1px solid var(--line);
  padding: 18px 20px; margin-bottom: 32px; line-height: 1.9;
}
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ==========================================================
   Mobile nav
   ========================================================== */
@media (max-width: 720px) {
  .main-nav {
    position: fixed; top: 68px; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column; gap: 0;
    padding: 8px 28px 18px;
    transform: translateY(-8px);
    opacity: 0; pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
  }
  .main-nav.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .main-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .header-inner .btn--small { display: none; }
  .nav-toggle {
    display: flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 32px; height: 32px; background: none; border: none; cursor: pointer; padding: 0;
  }
  .nav-toggle span { width: 100%; height: 1.5px; background: var(--ink); transition: transform 0.2s, opacity 0.2s; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
}