/* ==========================================================================
   planstand.org – Neugestaltung
   Farbsystem: Schwarz / Weiß + 1 gedeckter Blauton (Blaupausen-Referenz) in
   3 Abstufungen. Typografie: Spectral (Überschriften) / Inter (Text, sowie
   Labels/Maße in Versalien mit Letter-Spacing für den technischen Anklang).
   ========================================================================== */

:root {
  /* Schwarz / Weiß */
  --c-black: #1a1a1a;
  --c-ink: #2a2a2a;
  --c-white: #faf9f6;
  --c-paper: #f2f0ea;

  /* Gedeckter Farbton – "Blaupause", 3 Abstufungen */
  --c-accent-100: #a9bac4;   /* hell – Flächen, Trenner */
  --c-accent-400: #4a5d6b;   /* mittel – Akzente, Links, Icons */
  --c-accent-700: #2c3a42;   /* dunkel – Buttons, Hervorhebungen */

  --font-display: 'Spectral', Georgia, serif;
  --font-body: 'Inter', -apple-system, Segoe UI, sans-serif;
  --font-mono: var(--font-body);

  --maxw: 880px;
  --gap: clamp(1.5rem, 5vw, 2.5rem);
  --radius: 2px;
}

* { 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;
  font-family: var(--font-body);
  color: var(--c-ink);
  background: var(--c-white);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--c-black);
  margin: 0 0 0.6em;
  line-height: 1.2;
}

h2 { font-size: clamp(1.6rem, 5vw, 2.1rem); }
h3 { font-size: 1.05rem; font-weight: 600; }

p { margin: 0 0 1em; }

a { color: var(--c-accent-700); }

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

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent-400);
  margin: 0 0 0.8em;
  display: block;
}

/* ---------- Hintergrund: Aufmaßzeichnungen ---------- */
.blueprint-bg {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--maxw);
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.62;
}

.blueprint-track {
  will-change: transform;
}

.blueprint-track img {
  display: block;
  width: auto;
  max-width: none;
  height: var(--bg-vh, 100vh);
  margin: 0 0 clamp(2.5rem, 8vh, 6rem) auto; /* rechtsbündig innerhalb der Content-Spalte */
}

/* ---------- Layout-Container ---------- */
.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- Kopfzeile ---------- */
header.site-header {
  position: relative;
  z-index: 2;
  padding: 1.1rem 1.25rem 1.1rem;
  text-align: center;
  border-bottom: 1px solid var(--c-accent-100);
  background: rgba(250, 249, 246, 0.4);
  backdrop-filter: blur(1px);
  -webkit-backdrop-filter: blur(1px);
}

.logo-mark {
  max-width: 78vw;
  width: 374px;
  margin: 0 auto 0.25rem;
}
.logo-mark img { width: 100%; height: auto; }

.tagline {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--c-accent-700);
  max-width: 78vw;
  width: 374px;
  margin: 0 auto;
  text-align: center;
}
.tagline .sep { color: var(--c-accent-100); margin: 0 0.35em; }

/* Kopfzeilen-Navigation: Leistungen · Person · Kontakt */
.header-nav {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  gap: 1.6em;
}
.header-nav a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--c-accent-700);
  padding: 0.3em 0.1em;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.header-nav a:hover,
.header-nav a:focus-visible {
  color: var(--c-accent-400);
  border-bottom-color: var(--c-accent-400);
}

/* ---------- Sticky Mini-Header (erscheint beim Scrollen) ---------- */
.mini-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 1.1rem;
  background: rgba(250, 249, 246, 0.93);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--c-accent-100);
  transform: translateY(-100%);
  transition: transform 0.28s ease;
}
.mini-header.is-visible { transform: translateY(0); }

.mini-header .mini-logo-link { display: block; line-height: 0; }
.mini-header .mini-logo { height: 30px; width: auto; display: block; }

.burger-btn {
  position: relative;
  width: 30px;
  height: 30px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0;
  flex: 0 0 auto;
}
.burger-btn span {
  position: absolute;
  left: 3px;
  right: 3px;
  height: 1.5px;
  background: var(--c-accent-700);
  transition: transform 0.25s ease, opacity 0.2s ease, top 0.25s ease;
}
.burger-btn span:nth-child(1) { top: 9px; }
.burger-btn span:nth-child(2) { top: 14px; }
.burger-btn span:nth-child(3) { top: 19px; }
.burger-btn.is-open span:nth-child(1) { top: 14px; transform: rotate(45deg); }
.burger-btn.is-open span:nth-child(2) { opacity: 0; }
.burger-btn.is-open span:nth-child(3) { top: 14px; transform: rotate(-45deg); }
.burger-btn .sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.burger-panel {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 1.1rem;
  min-width: 210px;
  list-style: none;
  margin: 0;
  padding: 0.4rem;
  background: var(--c-white);
  border: 1px solid var(--c-accent-100);
  box-shadow: 0 12px 28px rgba(44, 58, 66, 0.14);
  display: none;
}
.burger-panel.is-open {
  display: block;
  animation: menu-in 0.18s ease;
}
@keyframes menu-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}
.burger-panel a {
  display: block;
  padding: 0.65em 0.7em;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-decoration: none;
  color: var(--c-ink);
  transition: background 0.15s ease, color 0.15s ease;
}
.burger-panel a:hover,
.burger-panel a:focus-visible { background: var(--c-accent-100); color: var(--c-accent-700); }

/* ---------- Hero / Intro ---------- */
.hero {
  padding: 1.8rem 0 3rem;
  text-align: left;
}
.hero .lead {
  font-size: 1.05rem;
  color: var(--c-ink);
}
.benefit-list {
  list-style: none;
  margin: 1.6em 0 0;
  padding: 0;
  display: grid;
  gap: 0.7em;
}
.benefit-list li {
  padding-left: 1.4em;
  position: relative;
  font-size: 0.96rem;
}
.benefit-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.55em;
  width: 7px; height: 7px;
  background: var(--c-accent-400);
}

/* ---------- Sparten-Sektionen ---------- */
.sparte {
  padding: 3.4rem 0;
  border-top: 1px solid var(--c-accent-100);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  scroll-margin-top: 64px;
}
.sparte.is-visible { opacity: 1; transform: translateY(0); }

.sparte .intro-text { font-size: 0.98rem; }

.leistungen {
  list-style: none;
  margin: 1.8em 0 0;
  padding: 0;
  display: grid;
  gap: 1.1em;
  border-top: 1px solid var(--c-accent-100);
  padding-top: 1.6em;
}
.leistungen li { font-size: 0.94rem; }
.leistungen strong {
  display: block;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--c-black);
  margin-bottom: 0.15em;
}

/* Referenzprojekte */
.referenzen {
  margin-top: 2.2rem;
  display: grid;
  gap: 1rem;
}
@media (min-width: 560px) {
  .referenzen.two-up { grid-template-columns: 1fr 1fr; }
}
.referenz figure {
  margin: 0;
  border: 1px solid var(--c-accent-100);
  background: var(--c-paper);
}
.referenz img,
.referenz .img-placeholder {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
  background: var(--c-paper);
}
.img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--c-accent-400);
  padding: 0.6em;
  border: 1px dashed var(--c-accent-100);
}
.referenz figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-accent-700);
  padding: 0.6em 0.8em;
  border-top: 1px solid var(--c-accent-100);
}

/* ---------- Vita ---------- */
.vita-block {
  display: grid;
  gap: 1.6rem;
}
.vita-portrait .img-placeholder,
.vita-portrait img {
  aspect-ratio: 3/4;
  max-width: 200px;
}
.vita-facts {
  list-style: none;
  margin: 1.2em 0 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-accent-700);
  display: grid;
  gap: 0.5em;
}
.vita-facts li { display: flex; gap: 0.6em; }
.vita-facts time,
.vita-facts .yr { flex: 0 0 auto; color: var(--c-accent-400); }

/* ---------- Kontakt ---------- */
.kontakt {
  background: var(--c-accent-700);
  color: var(--c-white);
  scroll-margin-top: 56px;
}
.kontakt h2 { color: var(--c-white); }
.kontakt a { color: var(--c-white); text-decoration: underline; text-underline-offset: 3px; }
.kontakt .lead { color: var(--c-accent-100); }

.kontakt-details {
  margin-top: 1.8rem;
  display: grid;
  gap: 1rem;
  font-size: 1rem;
}
.kontakt-details a { font-family: var(--font-mono); font-size: 0.95rem; }
.kontakt-details .label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent-100);
  display: block;
  margin-bottom: 0.2em;
}

/* ---------- Footer ---------- */
footer.site-footer {
  padding: 1.6rem 1.25rem 2.4rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--c-accent-400);
}
footer.site-footer a { color: var(--c-accent-400); }
footer.site-footer nav {
  margin-top: 0.5em;
  display: flex;
  gap: 1em;
  justify-content: center;
}

/* ---------- Desktop-Erweiterungen ---------- */
@media (min-width: 760px) {
  header.site-header { padding: 2rem 1.25rem 1.5rem; }
  .sparte { padding: 5rem 0; }
}