/* ============================================================
   techflow.at – zentrales Stylesheet
   Design "Präzisionsschliff" + Pulslinien-Trenner.
   Ein CSS-File, kein Build-Schritt, keine externen Abhängigkeiten.

   FARBLOGIK 90/9/1:
     90 % Weiß/Light als Fläche,
      9 % Deep Navy (Hero + Footer als dunkle Klammer),
      1 % Primary Blue NUR für Interaktives. Accent Sky nur auf Dunkel.

   MOTIVE:
   - Welle (stark, A=40 auf Raster 1440×96, Sinus Periode 480):
     nur als Hero-Abschluss.
   - Pulslinie (.signal): horizontale Linie mit einem EKG-Ausschlag,
     Trenner zwischen Sektionen. Der Ausschlag wandert pro Einsatz
     (x-Position im jeweiligen SVG), Farbe Accent Sky, 1.5px.
   ============================================================ */

/* ---- Schriften (selbst gehostet, DSGVO: keine Anfragen an Google) ------- */

@font-face {
  font-family: "DM Sans";
  src: url("../fonts/dmsans-var-latin.woff2") format("woff2");
  font-weight: 100 1000; /* Variable Font */
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Space Mono";
  src: url("../fonts/spacemono-400-latin.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Space Mono";
  src: url("../fonts/spacemono-700-latin.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---- Design-Tokens ------------------------------------------------------- */

:root {
  /* CD-Farbtokens */
  --deep: #0A1628;
  --navy: #0F2440;
  --primary: #1B6CF2;
  --mid: #2563EB;
  --accent: #38B6FF;
  --ice: #E8F4FD;
  --slate: #64748B;
  --light: #F1F5F9;
  --border: #E2E8F0;

  /* Textfarben (AA-fest auf Weiß, Light und Ice) */
  --ink: #0A1628;
  --ink-soft: #475569;
  --ink-inv: #F1F5F9;
  --ink-inv-soft: #C7D9EC;

  /* Modulare Skala, Ratio 1.25 */
  --step--1: clamp(0.82rem, 0.79rem + 0.15vw, 0.9rem);
  --step-0: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
  --step-1: clamp(1.2rem, 1.1rem + 0.55vw, 1.4rem);
  --step-2: clamp(1.45rem, 1.28rem + 0.9vw, 1.75rem);
  --step-3: clamp(1.8rem, 1.5rem + 1.6vw, 2.35rem);
  --step-4: clamp(2.5rem, 1.9rem + 3.2vw, 4rem);

  /* 8er-Raster */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-12: 6rem;

  --radius: 12px;
  color-scheme: light;
}

/* ---- Basis --------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-padding-top: 5.5rem; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  font-family: "DM Sans", -apple-system, "Segoe UI", sans-serif;
  font-size: var(--step-0);
  line-height: 1.65;
  color: var(--ink);
  background: #fff;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: var(--deep); }

img, svg { max-width: 100%; height: auto; }

a { color: var(--primary); }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; border-radius: 2px; }
.dark :focus-visible { outline-color: var(--accent); }

p { max-width: 65ch; }

.wrap {
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: #fff;
  color: var(--ink);
  padding: 0.6rem 1rem;
  z-index: 100;
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

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

.kicker {
  font-family: "Space Mono", monospace;
  font-weight: 700;
  font-size: var(--step--1);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.kicker--sky { color: var(--accent); }

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.015em; font-weight: 700; }
h2 { font-size: var(--step-3); max-width: 26ch; margin-top: var(--space-2); }
.sec-intro { margin-top: var(--space-3); color: var(--ink-soft); }

.sec { padding-block: clamp(3.5rem, 9vw, 6rem); }
.sec--light { background: var(--light); }
.sec--white { background: #fff; }

/* ---- Header / Navigation ------------------------------------------------- */

.site-head {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  padding-block: 0.85rem;
}
.logo { display: inline-flex; align-items: center; }
.logo svg { display: block; }

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem clamp(0.9rem, 2.5vw, 1.75rem);
}
.site-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
  text-decoration: none;
  padding: 0.3rem 0.1rem;
}
.site-nav a:hover {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
}
.site-nav .nav-cta {
  background: var(--primary);
  color: #fff;
  padding: 0.55rem 1.1rem;
  border-radius: 8px;
}
.site-nav .nav-cta:hover {
  background: var(--mid);
  color: #fff;
  text-decoration: none;
}

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

.hero {
  position: relative;
  background: linear-gradient(135deg, var(--deep) 0%, var(--navy) 100%);
  color: var(--ink-inv);
  isolation: isolate;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero-bg svg { width: 100%; height: 100%; display: block; }
.hero-inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(4rem, 10vw, 7rem);
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
}
.hero h1 {
  font-size: var(--step-4);
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 18ch;
  margin-top: var(--space-3);
}
.hero .lede {
  margin-top: var(--space-4);
  font-size: var(--step-1);
  line-height: 1.55;
  color: var(--ink-inv-soft);
  max-width: 52ch;
}
.hero .honest {
  margin-top: var(--space-3);
  color: var(--ink-inv-soft);
  max-width: 52ch;
}
.hero .honest a { color: var(--accent); text-underline-offset: 4px; }
.hero-cta {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-4);
}
.hero-tel {
  font-family: "Space Mono", monospace;
  font-weight: 700;
  font-size: var(--step-0);
  color: var(--accent);
  text-decoration: none;
}
.hero-tel:hover { text-decoration: underline; text-underline-offset: 5px; }
.hero .wave { position: relative; z-index: 1; }

.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: var(--step-0);
  text-decoration: none;
  padding: 0.95rem 1.7rem;
  border-radius: 8px;
  transition: background-color 0.2s ease;
}
.btn:hover { background: var(--mid); }

/* Handgesetzte Wellen-Unterstreichung unter "mitdenkt" */
.uwave { position: relative; white-space: nowrap; }
.uwave svg {
  position: absolute;
  left: -0.04em;
  bottom: -0.24em;
  width: calc(100% + 0.08em);
  height: 0.3em;
  overflow: visible;
}

/* Welle STARK: nur als Hero-Abschluss */
.wave { display: block; width: 100%; }
.wave--strong { height: clamp(48px, 8vw, 100px); }

/* ---- Pulslinie (Motiv aus dem Werkstattzettel-Entwurf) ------------------- */
/* Sitzt am Kopf einer Sektion; der EKG-Ausschlag wandert pro Einsatz.       */

.signal {
  display: block;
  width: 100%;
  height: 28px;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

/* ---- Leistungen ---------------------------------------------------------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  column-gap: var(--space-4);
  row-gap: var(--space-8);
  margin-top: var(--space-8);
}
.card {
  position: relative;
  background: var(--ice);
  border-radius: var(--radius);
  padding: var(--space-4);
}
.card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  border-radius: 0 0 var(--radius) var(--radius);
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 50%, var(--primary) 100%);
  background-size: 200% 100%;
  background-position: 0% 0;
  transition: background-position 0.5s ease;
}
.card:hover::after { background-position: 100% 0; }
.card-num {
  display: block;
  font-family: "Space Mono", monospace;
  font-weight: 700;
  font-size: clamp(2.4rem, 2rem + 1.5vw, 3rem);
  line-height: 1;
  color: var(--deep);
  /* ragt zur Hälfte über die Kartenoberkante hinaus */
  margin-top: calc(-1 * (var(--space-4) + 0.5em));
}
.card h3 { font-size: var(--step-1); margin-top: var(--space-2); }
.card p { margin-top: var(--space-2); color: var(--ink-soft); }
.card ul { list-style: none; margin-top: var(--space-3); }
.card li {
  position: relative;
  padding-left: 1.2em;
  color: var(--ink-soft);
  margin-top: 0.35rem;
}
.card li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--deep);
  font-weight: 600;
}

/* Betreuungspakete (Unterabschnitt in Leistungen) */
.pakete { margin-top: var(--space-12); }
.pakete .cards { row-gap: var(--space-6); }
.card .paket-preis {
  font-family: "Space Mono", monospace;
  font-weight: 700;
  font-size: var(--step-2);
  color: var(--deep);
  margin-top: var(--space-2);
}
.card .paket-preis span {
  font-family: "DM Sans", -apple-system, "Segoe UI", sans-serif;
  font-weight: 400;
  font-size: var(--step--1);
  color: var(--ink-soft);
}
.card .paket-ust {
  margin-top: 0.25rem;
  font-size: var(--step--1);
  color: var(--ink-soft);
}
.pakete-hinweis { margin-top: var(--space-4); color: var(--ink-soft); font-size: var(--step--1); }

/* ---- Warum techflow ------------------------------------------------------ */

.warum-grid {
  display: grid;
  grid-template-columns: minmax(16rem, 1fr) 2fr;
  gap: var(--space-6);
  margin-top: var(--space-8);
  align-items: start;
}
.profil {
  background: #fff;
  border-radius: var(--radius);
  padding: var(--space-4);
}
.profil-name { font-size: var(--step-1); margin-top: var(--space-3); font-weight: 700; }
.profil-rolle { color: var(--ink-soft); font-size: var(--step--1); margin-top: 0.15rem; }
.profil blockquote {
  margin-top: var(--space-3);
  padding-left: var(--space-2);
  border-left: 3px solid var(--deep);
  color: var(--ink-soft);
}
.values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: var(--space-4);
}
.value { border-top: 2px solid var(--deep); padding-top: var(--space-3); }
.value h3 { font-size: var(--step-0); }
.value p { margin-top: var(--space-1); color: var(--ink-soft); }

.panel-navy {
  margin-top: var(--space-8);
  background: var(--navy);
  color: var(--ink-inv);
  border-radius: var(--radius);
  padding: clamp(1.75rem, 4vw, 3rem);
}
.panel-navy h3 {
  font-size: var(--step-2);
  color: #fff;
  max-width: 30ch;
  margin-top: var(--space-2);
}
.panel-navy p { margin-top: var(--space-3); color: var(--ink-inv-soft); }

/* ---- FAQ ----------------------------------------------------------------- */

.faq-list { margin-top: var(--space-6); max-width: 46rem; }
.faq-list details { border-bottom: 1px solid var(--border); }
.faq-list details:first-of-type { border-top: 1px solid var(--border); }
.faq-list summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block: var(--space-3);
  font-weight: 600;
  font-size: var(--step-1);
  line-height: 1.3;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  flex: none;
  font-size: 1.5em;
  font-weight: 300;
  line-height: 1;
  color: var(--ink-soft);
  transform: translateY(0.08em);
}
.faq-list details[open] summary::after { content: "–"; }
.faq-list details p { padding-bottom: var(--space-3); color: var(--ink-soft); }
.faq-list details p + p { padding-top: 0; margin-top: calc(-1 * var(--space-2)); }

/* ---- Kontakt ------------------------------------------------------------- */

.kontakt-grid {
  display: grid;
  grid-template-columns: minmax(18rem, 3fr) 2fr;
  gap: var(--space-6);
  margin-top: var(--space-6);
  align-items: start;
}
.k-label {
  display: block;
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--ink-soft);
  margin-top: var(--space-4);
}
.k-big {
  display: inline-block;
  font-family: "Space Mono", monospace;
  font-weight: 700;
  font-size: var(--step-2);
  color: var(--primary);
  text-decoration: none;
  margin-top: 0.25rem;
  overflow-wrap: anywhere;
}
.k-big:hover { text-decoration: underline; text-underline-offset: 6px; }
.k-adresse { font-style: normal; color: var(--ink-soft); margin-top: var(--space-2); }
.k-hinweis {
  background: var(--ice);
  border-radius: var(--radius);
  padding: var(--space-4);
}
.k-hinweis strong { display: block; margin-bottom: var(--space-1); }
.k-hinweis p { color: var(--ink-soft); }
.k-hinweis p + p { margin-top: var(--space-2); }

/* ---- Footer -------------------------------------------------------------- */

.site-foot {
  background: var(--deep);
  color: var(--ink-inv-soft);
  padding-block: var(--space-8) var(--space-6);
  font-size: var(--step--1);
}
.site-foot .wrap { display: flex; flex-direction: column; gap: var(--space-4); }
.foot-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
}
.foot-slogan { color: var(--ink-inv-soft); }
.foot-legal {
  border-top: 1px solid rgba(232, 244, 253, 0.15);
  padding-top: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  justify-content: space-between;
  align-items: baseline;
}
.foot-legal p { max-width: none; }
.foot-links { display: flex; gap: var(--space-3); }
.site-foot a { color: #fff; text-underline-offset: 3px; }
.site-foot a:hover { color: var(--accent); }

/* ---- Rechtsseiten (Impressum / Datenschutz / 404) ------------------------ */

.narrow { max-width: 52rem; }
.legal h1 { font-size: var(--step-3); margin-top: var(--space-2); }
.legal h2 {
  font-size: var(--step-1);
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}
.legal p, .legal ul { margin-top: var(--space-2); color: var(--ink-soft); }
.legal ul { padding-left: 1.2em; }
.legal dl { margin-top: var(--space-2); }
.legal dt {
  font-family: "Space Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: var(--space-3);
}
.legal dd { margin-top: 2px; }
.legal .updated {
  font-family: "Space Mono", monospace;
  font-size: var(--step--1);
  color: var(--ink-soft);
  margin-top: var(--space-2);
}

/* 404 */
.err-main {
  min-height: 60vh;
  display: flex;
  align-items: center;
}
.err-main .btn { margin-top: var(--space-4); }

/* ---- Aus der Praxis (anonymisierte Referenzen) --------------------------- */

.praxis { margin-top: var(--space-8); }
.praxis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: var(--space-4);
  margin-top: var(--space-4);
}
.praxis-karte {
  background: #fff;
  border-radius: var(--radius);
  padding: var(--space-4);
}
.praxis-karte .branche {
  font-family: "Space Mono", monospace;
  font-weight: 700;
  font-size: var(--step--1);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.praxis-karte h3 { font-size: var(--step-0); margin-top: var(--space-2); }
.praxis-karte p { margin-top: var(--space-1); color: var(--ink-soft); }
.praxis-hinweis {
  margin-top: var(--space-3);
  color: var(--ink-soft);
  font-size: var(--step--1);
  font-style: italic;
}

/* ---- Glossar ------------------------------------------------------------- */

.glossar .intro { margin-top: var(--space-3); color: var(--ink-soft); }
.glossar h2 {
  font-family: "Space Mono", monospace;
  font-size: var(--step-0);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: var(--space-8);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}
.glossar dl { margin-top: var(--space-2); }
.glossar dt { font-weight: 700; font-size: var(--step-0); margin-top: var(--space-4); }
.glossar dd { margin-top: 2px; color: var(--ink-soft); max-width: 65ch; }

/* ---- Responsiv ----------------------------------------------------------- */

@media (max-width: 820px) {
  .warum-grid,
  .kontakt-grid { grid-template-columns: 1fr; }
  .foot-top { align-items: flex-start; flex-direction: column; }
}