/* =========================================================================
   Andreas Hassmann – Website v1
   Reines CSS, mobile-first, eine Akzentfarbe, viel Weißraum.
   Schrift lokal eingebunden (siehe @font-face), keine externen Requests.
   ========================================================================= */

/* ----- Schrift lokal (Inter, latin) ----- */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/inter-latin-400-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/inter-latin-600-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/inter-latin-700-normal.woff2") format("woff2");
}

/* ----- Design-Tokens ----- */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f6f7;
  --color-ink: #1d2327;        /* Anthrazit für Text */
  --color-ink-soft: #4a5258;   /* gedämpfter Text */
  --color-accent: #1f6f78;     /* gedecktes Petrol */
  --color-accent-dark: #185860;
  --color-accent-ink: #ffffff;
  --color-border: #e2e5e7;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --maxw: 64rem;
  --maxw-narrow: 44rem;
  --space-section: 4.5rem;

  --radius: 10px;
  --shadow: 0 1px 3px rgba(29, 35, 39, 0.08), 0 8px 24px rgba(29, 35, 39, 0.06);
}

/* ----- Reset / Basis ----- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

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

h1, h2, h3 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
}

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--color-accent); }
a:hover { color: var(--color-accent-dark); }

strong { font-weight: 600; }

/* ----- Fokus / Barrierefreiheit ----- */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-ink);
  color: #fff;
  padding: 0.75rem 1rem;
  z-index: 100;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
  color: #fff;
}

/* ----- Layout-Container ----- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 1.25rem;
}
.container--narrow { max-width: var(--maxw-narrow); }

.section { padding-block: var(--space-section); }
.section--problem { background: var(--color-bg-alt); }
.section--about { background: var(--color-bg-alt); }
.section--contact { background: var(--color-ink); color: #fff; }

.section__title { font-size: 1.75rem; }
.section__intro {
  color: var(--color-ink-soft);
  margin-bottom: 2rem;
  max-width: 40rem;
}

.lead { font-size: 1.15rem; color: var(--color-ink-soft); }
.section--contact .lead { color: #cfd6d8; }

/* ----- Header ----- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(8px);
  z-index: 50;
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.85rem;
}
.site-header__name { font-weight: 700; letter-spacing: -0.01em; }
.site-header__cta {
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

/* ----- Buttons ----- */
.button {
  display: inline-block;
  font-weight: 600;
  text-decoration: none;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  line-height: 1.2;
}
.button--primary {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}
.button--primary:hover {
  background: var(--color-accent-dark);
  color: #fff;
}
.button--ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}
.button--ghost:hover {
  border-color: #fff;
  color: #fff;
}
.button:has(.button__icon) {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.button__icon {
  flex: 0 0 auto;
}

/* ----- Hero ----- */
.hero {
  padding-block: 5rem;
  background: linear-gradient(180deg, #ffffff 0%, var(--color-bg-alt) 100%);
}
.hero__title {
  font-size: clamp(2rem, 6vw, 3.1rem);
  max-width: 22ch;
}
.hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-ink-soft);
  max-width: 46ch;
  margin-bottom: 2rem;
}
.hero__button { font-size: 1.1rem; }

/* ----- So arbeite ich (Phasen-Sequenz) ----- */
.steps {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
.step {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.step--highlight {
  border-color: var(--color-accent);
  border-width: 2px;
  box-shadow: var(--shadow);
}
.step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.9rem;
}
.step__title { font-size: 1.2rem; }
.step__text { color: var(--color-ink-soft); margin-bottom: 1.25rem; }
.step__link {
  margin-top: auto;
  align-self: flex-start;
  font-weight: 600;
  text-decoration: none;
}
.step__link:hover { text-decoration: underline; }

/* Verbindung zwischen den Schritten – macht die Abfolge sichtbar.
   Mobil: senkrechte Linie unter der Card (auf Höhe der Nummer). */
.step:not(:last-child)::after {
  content: "";
  position: absolute;
  background: var(--color-border);
  left: 2.625rem;   /* Padding (1.5rem) + halbe Nummer (1.125rem) */
  bottom: -1.25rem; /* in den Grid-Abstand hinein */
  width: 2px;
  height: 1.25rem;
}

/* ----- Warum ich ----- */
.about {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
  align-items: start;
}
.about__photo {
  border-radius: var(--radius);
  width: 100%;
  max-width: 320px;
  height: auto;
  box-shadow: var(--shadow);
}

/* ----- Referenz ----- */
.reference {
  margin: 0;
  border-left: 4px solid var(--color-accent);
  padding: 0.5rem 0 0.5rem 1.5rem;
}
.reference__quote { margin: 0; }
.reference__quote p { font-size: 1.2rem; color: var(--color-ink); }
.reference__source {
  margin-top: 0.75rem;
  color: var(--color-ink-soft);
  font-size: 0.95rem;
}

/* ----- Kontakt ----- */
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.75rem;
}

/* ----- Footer ----- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: 1.5rem;
  font-size: 0.95rem;
  color: var(--color-ink-soft);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  justify-content: space-between;
}
.site-footer__copy { margin: 0; }
.site-footer__nav { display: flex; gap: 1.25rem; }
.site-footer__nav a { text-decoration: none; }
.site-footer__nav a:hover { text-decoration: underline; }

/* ----- Methodik-Unterseiten ----- */
.phase { padding-block: 3.5rem; }
.phase__kicker {
  display: inline-block;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}
.phase__lead {
  font-size: 1.2rem;
  color: var(--color-ink-soft);
  max-width: 48ch;
}
.phase h2 {
  font-size: 1.4rem;
  margin-top: 2.75rem;
}
.phase__body p { color: var(--color-ink); }

/* Vorher / Danach – ein geschlossener Block, zwei klar getrennte Flächen. */
.ba {
  margin: 2.5rem 0;
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.ba__state {
  padding: 1.5rem;
}
.ba__state--vorher {
  background: var(--color-bg-alt);
  color: var(--color-ink-soft);
  border-bottom: 1px solid var(--color-border);
}
.ba__state--danach {
  background: #eaf3f3;
  color: var(--color-ink);
}
.ba__label {
  margin: 0 0 0.5rem;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.ba__state--vorher .ba__label { color: var(--color-ink-soft); }
.ba__state--danach .ba__label { color: var(--color-accent); }
.ba__state p:last-child { margin-bottom: 0; }

/* Weiter / Zurück zwischen den Phasen */
.phase-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}
.phase-nav a { text-decoration: none; font-weight: 600; }
.phase-nav a:hover { text-decoration: underline; }
.phase-nav__prev { justify-self: start; }
.phase-nav__home {
  justify-self: center;
  color: var(--color-ink-soft);
  font-weight: 400;
}
.phase-nav__next { justify-self: end; }
@media (max-width: 32rem) {
  .phase-nav { grid-template-columns: 1fr; }
  .phase-nav__prev,
  .phase-nav__home,
  .phase-nav__next { justify-self: center; text-align: center; }
}

/* ----- Rechtliche Seiten (Impressum / Datenschutz) ----- */
.legal { padding-block: 3.5rem; }
.legal h1 { font-size: 2rem; }
.legal h2 { font-size: 1.3rem; margin-top: 2rem; }
.legal address { font-style: normal; }

/* =========================================================================
   Tablet / Desktop
   ========================================================================= */
@media (min-width: 48rem) {
  body { font-size: 1.125rem; }

  .section__title { font-size: 2rem; }

  .steps { grid-template-columns: repeat(3, 1fr); }

  /* Verbinder waagerecht zwischen den Cards (auf Höhe der Nummer) */
  .step:not(:last-child)::after {
    left: auto;
    right: -1.25rem;
    bottom: auto;
    top: calc(1.5rem + 1.125rem);
    width: 1.25rem;
    height: 2px;
  }

  .ba { grid-template-columns: 1fr 1fr; }
  .ba__state--vorher {
    border-bottom: none;
    border-right: 1px solid var(--color-border);
  }

  .about {
    grid-template-columns: 320px 1fr;
    gap: 3rem;
  }
}