/* Controlling Systems Norbert Grimm — Stylesheet */

:root {
  --ink: #2e3a52;
  --ink-deep: #232d40;
  --ink-soft: #5c6880;
  --paper: #edeff3;
  --white: #ffffff;
  --ist: #2e7d75;
  --line: #c9ced9;

  --font-display: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --wrap: 68rem;
  --gap: clamp(3rem, 7vw, 6rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.125rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}

/* ---------- Typografie ---------- */

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0 0 0.6em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.1rem, 1.4rem + 3.2vw, 3.9rem); }
h2 { font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem); }
h3 { font-size: 1.1rem; letter-spacing: -0.01em; }

p { margin: 0 0 1.1em; }

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--ist);
  outline-offset: 3px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 1.4rem;
}

.lead {
  font-size: 1.15em;
  max-width: 46ch;
  color: var(--ink-soft);
}

/* ---------- Kopfzeile im Briefkopf-Blau des Logos ---------- */

.masthead {
  background: var(--ink);
  color: var(--paper);
  position: sticky;
  top: 0;
  z-index: 100;
}

/* Sprungmarken-Versatz, damit Überschriften nicht unter der fixierten Leiste verschwinden */
.band, .hero { scroll-margin-top: 5rem; }

.masthead__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--white);
}

.brand__mark { width: 30px; height: 33px; flex: none; }

.brand__text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.25;
}

.brand__text span {
  display: block;
  font-weight: 400;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--line);
}

.masthead__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.masthead__nav a { color: var(--line); text-decoration: none; }
.masthead__nav a:hover { color: var(--white); text-decoration: underline; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: clamp(3.5rem, 8vw, 7rem) 0 var(--gap);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 3rem;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.55;
  mask-image: linear-gradient(to bottom, transparent 0%, #000 14%, transparent 82%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 14%, transparent 82%);
  pointer-events: none;
}

.hero__inner { position: relative; z-index: 1; }

/* Waben-Wasserzeichen: kompakter Block rechts */
.hero__watermark {
  position: absolute;
  top: 50%;
  right: clamp(1rem, 4vw, 4rem);
  transform: translateY(-50%);
  width: clamp(16rem, 30vw, 30rem);
  pointer-events: none;
  z-index: 0;
  opacity: 0.08;
}

.hero__watermark svg { width: 100%; height: auto; display: block; }

@media (max-width: 52rem) {
  .hero__watermark { opacity: 0.05; width: 60%; right: -8%; }
}

.cta {
  display: inline-block;
  margin-top: 2rem;
  padding: 0.85rem 1.6rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background 160ms ease;
}

.cta:hover { background: var(--ist); color: var(--white); }

/* ---------- Abschnitte ---------- */

.band { padding: var(--gap) 0; }
.band--ist { }
.band--plan { }
.band--dark { background: var(--ink); color: var(--paper); border-top: 0; }
.band--dark h2, .band--dark h3 { color: var(--white); }
.band--dark .lead, .band--dark .eyebrow { color: var(--line); }
.band--dark a { color: var(--white); }
.band--dark .steps p { color: var(--line); }
.band--dark .steps li::before { color: var(--white); border-top-color: var(--white); }

.band--dark .service {
  background: transparent;
  border: 1px solid var(--ink-soft);
  border-left: 3px solid var(--ist);
}
.band--dark .service h3 { color: var(--white); }
.band--dark .service p { color: var(--line); }

.band--dark .quote {
  background: transparent;
  border: 1px solid var(--ink-soft);
  border-top: 2px solid var(--ist);
}
.band--dark .quote blockquote { color: var(--paper); }
.band--dark .quote figcaption { border-top-color: var(--ink-soft); color: var(--line); }
.band--dark .quote figcaption b { color: var(--white); }

.band--dark .app h3 { color: var(--white); }
.band--dark .app p { color: var(--line); }
.band--dark .app { border-top-color: var(--ink-soft); }
.band--dark .apps-more-label { color: var(--white); }
.band--dark .apps-more li { color: var(--line); }

.apps-industries {
  margin: 2rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.95em;
}
.apps-industries span {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: block;
  margin-bottom: 0.35rem;
}
.band--dark .apps-industries { border-top-color: var(--ink-soft); color: var(--paper); }
.band--dark .apps-industries span { color: var(--line); }

.apps-industries--top {
  margin: 0 0 1.75rem;
  padding-top: 0;
  border-top: none;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}
.band--dark .apps-industries--top { border-bottom-color: var(--ink-soft); }

.grid-2 {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
}

/* Leistungen */

.service {
  background: var(--white);
  border-left: 3px solid var(--ist);
  padding: 1.5rem 1.5rem 1.1rem;
}

.service h3 { margin-bottom: 0.4rem; }
.service p { margin: 0; font-size: 0.95em; color: var(--ink-soft); }

/* Profil */

.about-head {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
  margin-bottom: 1.5rem;
}

.about-portrait {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

@media (max-width: 34rem) {
  .about-head { grid-template-columns: 1fr; }
  .about-portrait { max-width: 11rem; }
}

.about-facts { position: relative; }

.cert-badge {
  float: right;
  width: 7.5rem;
  height: auto;
  margin: 0 0 1rem 1.5rem;
  filter: drop-shadow(0 4px 12px rgba(35, 45, 64, 0.18));
}

@media (max-width: 34rem) {
  .cert-badge { width: 5.5rem; margin: 0 0 0.75rem 1rem; }
}

.facts { list-style: none; margin: 1.5rem 0 0; padding: 0; }

.facts li {
  display: flex;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--line);
  font-size: 0.95em;
}

.facts b {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  flex: 0 0 7.5rem;
  padding-top: 0.25rem;
}

/* Anwendungen */

.apps {
  display: grid;
  gap: 0 clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: repeat(2, 1fr);
}

.app {
  border-top: 1px solid var(--line);
  padding: 1rem 0 1.4rem;
}

.app:nth-child(1),
.app:nth-child(2) {
  border-top: 2px solid var(--ist);
}


.app h3 { margin: 0 0 0.25rem; font-size: 1rem; }
.app p { margin: 0; font-size: 0.9em; color: var(--ink-soft); }

.apps-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
  margin-top: 2.5rem;
}

.apps-more-col {}

.apps-more-label {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  border-top: 2px solid var(--ist);
  padding-top: 1rem;
  margin: 0 0 1rem;
}

.apps-more {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.apps-more li {
  font-size: 0.95em;
  padding-left: 1rem;
  position: relative;
}

.apps-more li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--ist);
}

@media (max-width: 46rem) {
  .apps-layout { grid-template-columns: 1fr; }
  .apps { grid-template-columns: 1fr; }
  .apps-more-col { position: static; }
  .apps-more { grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 0.5rem clamp(1.5rem, 4vw, 3rem); }
}

/* Kundenstimmen */

.quote {
  background: var(--white);
  margin: 0;
  padding: 1.75rem 1.5rem 1.25rem;
  border-top: 2px solid var(--ist);
}

.quote blockquote {
  margin: 0 0 1.25rem;
  font-size: 0.98em;
  text-indent: -0.4em;
}

.quote blockquote::before { content: "\201C"; }
.quote blockquote::after { content: "\201D"; }

.quote figcaption {
  border-top: 1px dashed var(--line);
  padding-top: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
}

.quote figcaption b {
  display: block;
  color: var(--ink);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

/* Systeme */

.sysgrid {
  display: grid;
  gap: 2rem clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  margin-top: 2.5rem;
}

.sysgroup h3 {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--line);
  border-top: 1px solid var(--ink-soft);
  padding-top: 0.7rem;
  margin: 0;
}

.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 0;
  padding: 0;
}

.tags li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--ink-soft);
  color: var(--paper);
}

/* Ablauf — echte Reihenfolge, daher nummeriert */

.steps {
  list-style: none;
  counter-reset: step;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
}

.steps li { counter-increment: step; }

.steps li::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ist);
  border-top: 2px solid var(--ist);
  padding-top: 0.6rem;
  margin-bottom: 0.6rem;
}

.steps h3 { margin-bottom: 0.3rem; }
.steps p { font-size: 0.93em; color: var(--ink-soft); margin: 0; }

/* Kontakt */

.contact-lines {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 2.1;
  margin: 1.5rem 0 0;
}

.contact-lines span {
  display: inline-block;
  min-width: 6rem;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  text-transform: uppercase;
}

/* ---------- Fußzeile ---------- */

.foot {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
}

.foot a { color: var(--ink-soft); }
.foot .claim { letter-spacing: 0.22em; text-transform: uppercase; }

/* ---------- Rechtstexte ---------- */

.legal { padding: var(--gap) 0; max-width: 44rem; }
.legal h2 { margin-top: 2.5rem; font-size: 1.25rem; }
.legal p { font-size: 0.97em; }

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
}

/* Einblicke / Screenshots */
.shots { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--ink-soft); }
.shots-label {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--line); margin: 0 0 1.25rem;
}
.shots-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.75rem 1.5rem;
  align-items: start;
}
.shot { margin: 0; }
.shot--wide { grid-column: 1 / -1; }
.shot a { display: block; border: 1px solid var(--ink-soft); background: var(--white); line-height: 0; transition: border-color 0.15s; }
.shot a:hover { border-color: var(--ist); }
.shot img {
  width: 100%;
  height: auto;
  max-height: 22rem;
  object-fit: contain;
  object-position: top center;
  background: var(--white);
  display: block;
}
.shot figcaption {
  font-size: 0.85rem; color: var(--line); margin-top: 0.6rem; line-height: 1.45;
}
@media (max-width: 44rem) {
  .shots-grid { grid-template-columns: 1fr; gap: 1.75rem; }
}