/* =========================================================================
   Steuerberatung Otto und Behring — site.css
   Editorial Precision — modern, typografisch, bewusst zurückhaltend
   ========================================================================= */

/* ----- Tokens ----- */
:root {
  --c-bg:        #F5F2ED;
  --c-text:      #1A1A1A;
  --c-text-mute: #6B6B6B;
  --c-accent:    #1E3A8A;
  --c-accent-hover: #1E40AF;
  --c-hairline:  rgba(26, 26, 26, 0.12);
  --c-hairline-strong: rgba(26, 26, 26, 0.24);
  --c-paper:     #FFFFFF;

  --f-display: "Fraunces", "Times New Roman", serif;
  --f-body:    "Inter Tight", system-ui, -apple-system, sans-serif;
  --f-mono:    "JetBrains Mono", ui-monospace, "SF Mono", monospace;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  --container: 1400px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --space-7: 9rem;
  --space-8: 13rem;
}

/* ----- Reset ----- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--f-body);
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-bg);
  font-weight: 400;
  font-feature-settings: "ss01" on, "cv11" on;
  text-rendering: optimizeLegibility;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { background: none; border: 0; cursor: pointer; font: inherit; color: inherit; }
ul, ol { list-style: none; }
::selection { background: var(--c-accent); color: var(--c-bg); }

/* ----- Type-Hierarchie ----- */
.eyebrow {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-text-mute);
}

.eyebrow--accent { color: var(--c-accent); }

.display {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(3.5rem, 11vw, 9rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  font-variation-settings: "opsz" 144, "SOFT" 0, "WONK" 0;
}

.display--small {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
}

h2.editorial, .h2 {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 96;
}

h3 {
  font-family: var(--f-body);
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.005em;
}

p { max-width: 62ch; }
.lead { font-size: 1.375rem; line-height: 1.5; max-width: 50ch; }
.muted { color: var(--c-text-mute); }
.mono { font-family: var(--f-mono); font-size: 0.875rem; }

/* Inline-Italic-Display innerhalb Sans-Body */
em.disp, i.disp {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
}

/* ----- Layout ----- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(4rem, 9vw, 8rem);
  border-top: 1px solid var(--c-hairline);
}

.section--no-border { border-top: 0; }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
}

/* Editorial-Block: Eyebrow links, Content rechts */
.editorial-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 800px) {
  .editorial-row {
    grid-template-columns: 12rem 1fr;
    gap: var(--space-5);
  }
  .editorial-row--wide {
    grid-template-columns: 12rem minmax(0, 1fr) 4rem;
  }
}

.editorial-row .eyebrow {
  position: sticky;
  top: 5rem;
  align-self: start;
  padding-top: 0.5em;
}

/* ----- Header ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--c-bg) 92%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-hairline);
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-3);
  padding-block: 1.25rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  text-decoration: none;
}
.brand__mono {
  font-family: var(--f-mono);
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--c-accent);
}
.brand__name {
  font-family: var(--f-body);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.005em;
  color: var(--c-text);
}
@media (max-width: 640px) {
  .brand__name { display: none; }
}

.nav-primary {
  display: flex;
  justify-content: flex-end;
  gap: 1.75rem;
}
.nav-primary a {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: relative;
  padding-block: 0.25rem;
  transition: color .25s var(--ease-out);
}
.nav-primary a::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .36s var(--ease-out);
}
.nav-primary a:hover { color: var(--c-accent); }
.nav-primary a:hover::after { transform: scaleX(1); }
.nav-primary a[aria-current="page"] {
  color: var(--c-accent);
}
.nav-primary a[aria-current="page"]::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.5rem 0;
  justify-self: end;
}

@media (max-width: 720px) {
  .nav-primary {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--c-bg);
    z-index: 60;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: var(--gutter);
    gap: 1.25rem;
  }
  body[data-nav-open="true"] .nav-primary { display: flex; }
  body[data-nav-open="true"] { overflow: hidden; }
  .nav-primary a {
    font-family: var(--f-display);
    font-style: italic;
    font-size: clamp(2.25rem, 9vw, 4rem);
    text-transform: none;
    letter-spacing: -0.02em;
    color: var(--c-text);
  }
  .nav-primary a::after { display: none; }
  .nav-toggle {
    display: inline-block;
    z-index: 70;
    position: relative;
  }
}

/* ----- Hero ----- */
.hero {
  padding-block: clamp(5rem, 12vw, 11rem) clamp(4rem, 9vw, 8rem);
  position: relative;
}
.hero__eyebrow {
  margin-bottom: clamp(2rem, 5vw, 3rem);
}
.hero__title {
  display: block;
}
.hero__line-1, .hero__line-2 {
  display: block;
  opacity: 0;
  transform: translateY(1.2em);
  animation: heroRise 1.1s var(--ease-out) forwards;
}
.hero__line-1 {
  font-family: var(--f-body);
  font-size: clamp(1.75rem, 4.5vw, 3rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--c-text-mute);
  animation-delay: .12s;
}
.hero__line-2 {
  margin-top: 0.1em;
  margin-left: clamp(0rem, 6vw, 6rem);
  animation-delay: .26s;
}
.hero__sub {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  max-width: 50ch;
  font-size: clamp(1.125rem, 1.6vw, 1.375rem);
  line-height: 1.5;
  opacity: 0;
  transform: translateY(1.5em);
  animation: heroRise 1.1s var(--ease-out) .42s forwards;
}
.hero__cta {
  margin-top: clamp(2rem, 4vw, 3rem);
  opacity: 0;
  transform: translateY(1.5em);
  animation: heroRise 1.1s var(--ease-out) .56s forwards;
}

@keyframes heroRise {
  to { opacity: 1; transform: translateY(0); }
}

/* Hairline-Link / Pseudo-Button */
.link-arrow {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6em;
  font-family: var(--f-mono);
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-block: 0.5rem;
  border-bottom: 1px solid var(--c-text);
  transition: color .3s var(--ease-out), border-color .3s var(--ease-out), gap .3s var(--ease-out);
}
.link-arrow .arrow {
  display: inline-block;
  transition: transform .35s var(--ease-out);
}
.link-arrow:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
  gap: 1em;
}
.link-arrow:hover .arrow { transform: translateX(0.2em); }

.link-arrow--accent { color: var(--c-accent); border-color: var(--c-accent); }
.link-arrow--lg {
  font-size: 1rem;
  padding-block: 0.75rem;
}

/* ----- Editorial-Liste (Leistungen) ----- */
.svc-list {
  display: grid;
  grid-template-columns: 1fr;
}
.svc-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem 2rem;
  padding-block: 1.75rem;
  border-top: 1px solid var(--c-hairline);
  align-items: baseline;
}
.svc-item:last-child { border-bottom: 1px solid var(--c-hairline); }
.svc-item__num {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  padding-top: 0.5em;
  min-width: 2.5rem;
}
.svc-item__title {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.svc-item__desc {
  margin-top: 0.5rem;
  color: var(--c-text-mute);
  max-width: 56ch;
  font-size: 1rem;
}

@media (min-width: 800px) {
  .svc-item {
    grid-template-columns: 6rem 1fr 1fr;
    gap: 3rem;
  }
  .svc-item__title { padding-right: 2rem; }
}

/* ----- 3-Spalten-Statements ----- */
.values {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
@media (min-width: 800px) {
  .values { grid-template-columns: repeat(3, 1fr); gap: 4rem; }
}
.value__rule {
  display: block;
  width: 2.5rem;
  height: 1px;
  background: var(--c-accent);
  margin-bottom: 1.5rem;
}
.value__title {
  font-family: var(--f-display);
  font-style: italic;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.value__body {
  color: var(--c-text-mute);
  font-size: 1rem;
}

/* ----- Prozess-Steps ----- */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  counter-reset: step;
}
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem 2.5rem;
  padding-block: 2rem;
  border-top: 1px solid var(--c-hairline);
  align-items: start;
}
.step:last-child { border-bottom: 1px solid var(--c-hairline); }
.step__num {
  counter-increment: step;
  font-family: var(--f-display);
  font-style: italic;
  font-size: clamp(2.5rem, 5vw, 4rem);
  color: var(--c-accent);
  line-height: 1;
  min-width: 4rem;
}
.step__num::before { content: counter(step, decimal-leading-zero); }
.step__title {
  font-family: var(--f-display);
  font-style: italic;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  line-height: 1.1;
  margin-bottom: 0.75rem;
}
.step__body { color: var(--c-text-mute); max-width: 52ch; }

/* ----- Kontakt-Teaser-Block ----- */
.contact-tease {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: end;
}
@media (min-width: 800px) {
  .contact-tease { grid-template-columns: 2fr 1fr; }
}
.tel-display {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-text);
  display: inline-block;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--c-hairline);
  transition: color .3s var(--ease-out), border-color .3s var(--ease-out);
}
.tel-display:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
}

/* ----- Team-Liste (auf Über-uns) ----- */
.team-list {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--c-hairline);
}
.team-list li {
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--c-hairline);
  display: grid;
  grid-template-columns: 2.5rem 1fr auto;
  gap: 1.5rem;
  align-items: baseline;
  transition: background-color .3s var(--ease-out);
}
.team-list li:hover { background: rgba(30, 58, 138, 0.04); }
.team-list .num {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--c-text-mute);
}
.team-list .name {
  font-family: var(--f-display);
  font-style: italic;
  font-size: clamp(1.25rem, 2.5vw, 1.875rem);
  line-height: 1.1;
}
.team-list .role {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-mute);
}

/* ----- Footer ----- */
.site-footer {
  margin-top: clamp(5rem, 9vw, 8rem);
  border-top: 1px solid var(--c-hairline-strong);
  padding-block: clamp(3rem, 5vw, 5rem) 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
@media (min-width: 800px) {
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; }
}
.footer-col h4 {
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-text-mute);
  margin-bottom: 1.25rem;
  font-weight: 400;
}
.footer-col p, .footer-col li, .footer-col a {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--c-text);
}
.footer-col a:hover { color: var(--c-accent); }
.footer-col ul { display: flex; flex-direction: column; gap: 0.4rem; }

.footer-bottom {
  margin-top: clamp(3rem, 5vw, 5rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-hairline);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--c-text-mute);
  text-transform: uppercase;
}

/* ----- Lange Inhalts-Seiten (Impressum / Datenschutz) ----- */
.prose {
  max-width: 70ch;
}
.prose h2 {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.15;
  margin-top: 3rem;
  margin-bottom: 1rem;
}
.prose h3 {
  font-size: 1.125rem;
  font-weight: 500;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}
.prose p, .prose li {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}
.prose ul {
  list-style: none;
  padding-left: 0;
}
.prose ul li {
  padding-left: 1.5rem;
  position: relative;
}
.prose ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--c-accent);
}
.prose a {
  color: var(--c-accent);
  border-bottom: 1px solid var(--c-hairline);
  transition: border-color .25s var(--ease-out);
}
.prose a:hover { border-color: var(--c-accent); }

.dl-data {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--c-hairline);
  margin-top: 1.5rem;
}
.dl-data > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--c-hairline);
}
@media (min-width: 600px) {
  .dl-data > div {
    grid-template-columns: 14rem 1fr;
    gap: 2rem;
  }
}
.dl-data dt {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-mute);
}
.dl-data dd {
  font-size: 1rem;
  line-height: 1.5;
}

/* ----- OSM-Karte ----- */
.map-wrap {
  margin-top: 3rem;
  border: 1px solid var(--c-hairline-strong);
  background: var(--c-paper);
  height: clamp(20rem, 45vh, 32rem);
  position: relative;
}
#map { width: 100%; height: 100%; }

/* ----- Reveal-Animationen ----- */
.reveal {
  opacity: 0;
  transform: translateY(2rem);
  transition: opacity 1.2s var(--ease-out), transform 1.2s var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay="1"] { transition-delay: .12s; }
.reveal[data-delay="2"] { transition-delay: .24s; }
.reveal[data-delay="3"] { transition-delay: .36s; }
.reveal[data-delay="4"] { transition-delay: .48s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-delay: 0s !important;
    transition-duration: 0.001s !important;
  }
  .hero__line-1, .hero__line-2, .hero__sub, .hero__cta {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ----- Skip-Link (A11y) ----- */
.skip-link {
  position: absolute;
  top: -40px;
  left: 1rem;
  background: var(--c-accent);
  color: var(--c-bg);
  padding: 0.5rem 1rem;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  z-index: 100;
  transition: top .2s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

/* ----- Print ----- */
@media print {
  .site-header, .site-footer, .nav-toggle, .map-wrap { display: none; }
  body { background: white; color: black; }
  .display, .h2, h2.editorial { color: black; }
}