/* ==========================================================================
   Hilgensoft – main.css
   Basis: Design-Tokens, Reset, Typografie, Layout, Header, Footer, Buttons
   Keine externen Ressourcen. Reines CSS3.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design-Tokens
   Farbwelt zentral änderbar. Für ein neues Branding genügt es in der Regel,
   --color-primary, --color-accent und --color-ink anzupassen.
   -------------------------------------------------------------------------- */
:root {
  /* Markenfarben */
  --color-primary: #0f7bb0;          /* Aktionsfarbe (Buttons, Links)        */
  --color-primary-hover: #0c6592;    /* Hover-Zustand                        */
  --color-primary-soft: #e7f3fa;     /* sehr helle Fläche                    */
  --color-secondary: #0b2233;        /* dunkles Marineblau                   */
  --color-accent: #2aa3dc;           /* Logoblau, Grafiken, Akzente          */
  --color-accent-soft: #cfeafa;      /* helles Logoblau                      */

  /* Flächen und Text */
  --color-background: #ffffff;
  --color-surface: #f4f7fa;
  --color-surface-2: #e9f0f6;
  --color-text: #0e1f2c;
  --color-muted: #52667a;
  --color-border: #dbe4ec;
  --color-border-strong: #c4d3df;

  /* Dunkle Bereiche (Hero, CTA, Footer) */
  --color-ink: #08131d;
  --color-ink-2: #0e2537;
  --color-ink-text: #e8f0f6;
  --color-ink-muted: #9fb6c6;
  --color-ink-border: rgba(207, 234, 250, 0.16);

  /* Status */
  --color-success: #1c7a55;

  /* Radien */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  /* Schatten */
  --shadow-sm: 0 1px 2px rgba(11, 34, 51, 0.06), 0 2px 6px rgba(11, 34, 51, 0.05);
  --shadow: 0 2px 6px rgba(11, 34, 51, 0.06), 0 12px 28px rgba(11, 34, 51, 0.08);
  --shadow-lg: 0 4px 12px rgba(11, 34, 51, 0.08), 0 28px 60px rgba(11, 34, 51, 0.14);

  /* Layout */
  --container: 1200px;
  --container-narrow: 860px;
  --gutter: clamp(1.15rem, 4vw, 2.5rem);
  --section-space: clamp(4rem, 8vw, 7.5rem);

  /* Typografie */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Segoe UI Variable",
    Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "Segoe UI Mono", Consolas,
    "SF Mono", Menlo, monospace;

  --fs-display: clamp(2.3rem, 4.5vw, 3.6rem);
  --fs-h1: clamp(2.05rem, 4.1vw, 3.25rem);
  --fs-h2: clamp(1.7rem, 3.1vw, 2.5rem);
  --fs-h3: clamp(1.16rem, 1.6vw, 1.4rem);
  --fs-lead: clamp(1.04rem, 1.35vw, 1.24rem);
  --fs-body: 1.0125rem;
  --fs-sm: 0.9125rem;
  --fs-xs: 0.815rem;

  /* Bewegung */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.28s;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 6.5rem;
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
svg,
picture,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.6em;
  line-height: 1.16;
  letter-spacing: -0.021em;
  font-weight: 700;
  color: var(--color-secondary);
  text-wrap: balance;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: 1.3; }
h4 { font-size: 1.0625rem; line-height: 1.35; }

p {
  margin: 0 0 1.15em;
  text-wrap: pretty;
}

p:last-child,
ul:last-child,
ol:last-child {
  margin-bottom: 0;
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.16em;
  text-decoration-thickness: 1px;
  transition: color var(--dur) var(--ease);
}

a:hover {
  color: var(--color-primary-hover);
}

ul,
ol {
  margin: 0 0 1.15em;
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.35rem;
}

strong {
  font-weight: 650;
  color: var(--color-secondary);
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-surface-2);
  padding: 0.12em 0.38em;
  border-radius: 5px;
}

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

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

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

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--section-space);
}

.section--tight {
  padding-block: clamp(2.75rem, 5vw, 4.5rem);
}

.section--surface {
  background: var(--color-surface);
}

.section--line {
  border-top: 1px solid var(--color-border);
}

.section--ink {
  background:
    radial-gradient(120% 90% at 85% 0%, rgba(42, 163, 220, 0.22), transparent 62%),
    linear-gradient(160deg, var(--color-ink) 0%, var(--color-ink-2) 100%);
  color: var(--color-ink-text);
}

.section--ink h2,
.section--ink h3,
.section--ink h4,
.section--ink strong {
  color: #fff;
}

.section--ink p,
.section--ink li {
  color: var(--color-ink-muted);
}

.section--ink a:not(.btn) {
  color: var(--color-accent-soft);
}

.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 200;
  background: var(--color-secondary);
  color: #fff;
  padding: 0.85rem 1.35rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 0;
  color: #fff;
}

.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* Nur mit aktivem JavaScript sinnvolle Elemente */
.no-js .js-only { display: none !important; }

/* --------------------------------------------------------------------------
   4. Typografische Bausteine
   -------------------------------------------------------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1rem;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.eyebrow::before {
  content: "";
  width: 1.65rem;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  flex: none;
}

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

.eyebrow--center {
  justify-content: center;
}

.lead {
  font-size: var(--fs-lead);
  line-height: 1.62;
  color: var(--color-muted);
}

.section--ink .lead {
  color: var(--color-ink-muted);
}

.section-head {
  max-width: 46rem;
  margin-bottom: clamp(2.25rem, 4vw, 3.5rem);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head--center .eyebrow {
  justify-content: center;
}

.section-head p:last-child {
  margin-bottom: 0;
}

.display {
  font-size: var(--fs-display);
  letter-spacing: -0.028em;
  line-height: 1.05;
}

.muted { color: var(--color-muted); }

.highlight {
  color: var(--color-primary);
}

.section--ink .highlight {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   5. Buttons
   -------------------------------------------------------------------------- */
.btn {
  --btn-bg: var(--color-primary);
  --btn-fg: #ffffff;
  --btn-border: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 3rem;
  padding: 0.8rem 1.55rem;
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 650;
  letter-spacing: 0.005em;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.btn:hover {
  color: var(--btn-fg);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  --btn-bg: var(--color-primary);
  box-shadow: 0 6px 18px rgba(15, 123, 176, 0.28);
}

.btn--primary:hover {
  --btn-bg: var(--color-primary-hover);
  box-shadow: 0 10px 26px rgba(15, 123, 176, 0.34);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--color-secondary);
  --btn-border: var(--color-border-strong);
}

.btn--ghost:hover {
  --btn-bg: var(--color-surface);
  --btn-border: var(--color-primary);
  --btn-fg: var(--color-primary);
}

.btn--on-ink {
  --btn-bg: rgba(255, 255, 255, 0.07);
  --btn-fg: #ffffff;
  --btn-border: rgba(255, 255, 255, 0.34);
  backdrop-filter: blur(4px);
}

.btn--on-ink:hover {
  --btn-bg: rgba(255, 255, 255, 0.15);
  --btn-border: #ffffff;
}

.btn--light {
  --btn-bg: #ffffff;
  --btn-fg: var(--color-secondary);
}

.btn--light:hover {
  --btn-bg: var(--color-accent-soft);
  --btn-fg: var(--color-secondary);
}

.btn--sm {
  min-height: 2.5rem;
  padding: 0.5rem 1.1rem;
  font-size: var(--fs-xs);
}

.btn--lg {
  min-height: 3.4rem;
  padding: 0.95rem 2rem;
  font-size: var(--fs-body);
}

.btn--block {
  width: 100%;
}

.btn__icon {
  width: 1em;
  height: 1em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.9rem;
}

.btn-row--center {
  justify-content: center;
}

/* Textlink mit Pfeil */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 650;
  font-size: var(--fs-sm);
  text-decoration: none;
}

.link-arrow::after {
  content: "";
  width: 0.9em;
  height: 0.9em;
  background: currentColor;
  transition: transform var(--dur) var(--ease);
  -webkit-mask: no-repeat center / contain
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h14M13 6l6 6-6 6'/%3E%3C/svg%3E");
  mask: no-repeat center / contain
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h14M13 6l6 6-6 6'/%3E%3C/svg%3E");
}

.link-arrow:hover::after {
  transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   6. Header und Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.site-header.is-scrolled {
  box-shadow: 0 6px 24px rgba(11, 34, 51, 0.08);
  background: rgba(255, 255, 255, 0.97);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: 5rem;
  transition: min-height var(--dur) var(--ease);
}

.site-header.is-scrolled .site-header__inner {
  min-height: 4.1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: none;
  text-decoration: none;
  line-height: 0;
}

.brand__logo {
  width: auto;
  height: 2.35rem;
  transition: height var(--dur) var(--ease);
}

.site-header.is-scrolled .brand__logo {
  height: 2rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav__toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  min-height: 2.85rem;
  padding: 0.5rem 1rem 0.5rem 0.85rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  background: #fff;
  color: var(--color-secondary);
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 650;
  cursor: pointer;
}

.nav__toggle-box {
  position: relative;
  width: 1.1rem;
  height: 0.75rem;
  flex: none;
}

.nav__toggle-box span,
.nav__toggle-box::before,
.nav__toggle-box::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav__toggle-box::before { top: 0; }
.nav__toggle-box span { top: 50%; margin-top: -1px; }
.nav__toggle-box::after { bottom: 0; }

.nav__toggle[aria-expanded="true"] .nav__toggle-box::before {
  transform: translateY(5.5px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-box span {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-box::after {
  transform: translateY(-5.5px) rotate(-45deg);
}

.nav__panel {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__list li + li {
  margin-top: 0;
}

.nav__list a {
  display: block;
  padding: 0.55rem 0.7rem;
  border-radius: var(--radius-sm);
  color: var(--color-secondary);
  font-size: 0.905rem;
  font-weight: 550;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.nav__list a:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.nav__list a[aria-current="page"] {
  color: var(--color-primary);
  font-weight: 700;
  background: var(--color-primary-soft);
}

.nav__cta {
  margin-left: 0.65rem;
  flex: none;
}

/* Kompaktere Navigation auf mittleren Breiten */
@media (max-width: 1240px) {
  .nav__list a { padding-inline: 0.5rem; font-size: 0.865rem; }
  .nav__cta { margin-left: 0.35rem; }
}

/* Mobile Navigation */
@media (max-width: 1080px) {
  .nav__toggle {
    display: inline-flex;
  }

  .nav__panel {
    position: fixed;
    inset: 5rem 0 auto;
    z-index: 99;
    display: block;
    max-height: calc(100dvh - 5rem);
    overflow-y: auto;
    padding: 1.1rem var(--gutter) 2rem;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease),
      visibility var(--dur) var(--ease);
  }

  .nav__panel.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__list {
    display: block;
  }

  .nav__list a {
    padding: 0.95rem 0.75rem;
    font-size: 1.05rem;
    border-radius: var(--radius);
  }

  .nav__list li + li {
    border-top: 1px solid var(--color-border);
  }

  .nav__cta {
    margin: 1.1rem 0 0;
    width: 100%;
    min-height: 3.1rem;
    font-size: var(--fs-sm);
  }

  /* Fallback ohne JavaScript: Navigation bleibt sichtbar und bedienbar */
  .no-js .nav__toggle { display: none; }

  .no-js .nav__panel {
    position: static;
    max-height: none;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
    transform: none;
    opacity: 1;
    visibility: visible;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .no-js .nav__list {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .no-js .nav__list li + li { border-top: 0; }

  .no-js .nav__list a { padding: 0.4rem 0.55rem; font-size: 0.85rem; }

  .no-js .nav__cta { width: auto; margin: 0 0 0 0.5rem; min-height: 2.5rem; }
}

@media (max-width: 1080px) {
  .site-header__inner { min-height: 5rem; }
  .site-header.is-scrolled .site-header__inner { min-height: 5rem; }
}

body.nav-open {
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   7. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-ink);
  color: var(--color-ink-muted);
  padding-block: clamp(3rem, 6vw, 4.75rem) 2rem;
  font-size: var(--fs-sm);
}

.site-footer a {
  color: var(--color-ink-muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: #fff;
  text-decoration: underline;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(15rem, 1.5fr) repeat(3, minmax(8rem, 1fr));
  gap: clamp(2rem, 4vw, 3.25rem);
}

.site-footer__logo {
  height: 2.2rem;
  width: auto;
  margin-bottom: 1.15rem;
}

.site-footer__tagline {
  color: var(--color-ink-muted);
  max-width: 24rem;
  margin-bottom: 1.35rem;
}

.footer-title {
  margin: 0 0 1rem;
  color: #fff;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-list li + li {
  margin-top: 0.6rem;
}

.social-row {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.35rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid var(--color-ink-border);
  border-radius: var(--radius-sm);
  color: var(--color-ink-text);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.social-link:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

.social-link svg {
  width: 1.15rem;
  height: 1.15rem;
  fill: currentColor;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: clamp(2.5rem, 5vw, 3.75rem);
  padding-top: 1.75rem;
  border-top: 1px solid var(--color-ink-border);
  font-size: var(--fs-xs);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__legal li + li {
  margin-top: 0;
}

@media (max-width: 900px) {
  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .site-footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  .site-footer__grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* --------------------------------------------------------------------------
   8. Animationen (dezent, respektiert prefers-reduced-motion)
   -------------------------------------------------------------------------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  will-change: opacity, transform;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.js [data-reveal][data-reveal-delay="1"] { transition-delay: 0.07s; }
.js [data-reveal][data-reveal-delay="2"] { transition-delay: 0.14s; }
.js [data-reveal][data-reveal-delay="3"] { transition-delay: 0.21s; }
.js [data-reveal][data-reveal-delay="4"] { transition-delay: 0.28s; }
.js [data-reveal][data-reveal-delay="5"] { transition-delay: 0.35s; }

/* Sicherheitsnetz: laedt main.js nicht, bleiben Inhalte trotzdem sichtbar */
.js-fallback [data-reveal] {
  opacity: 1;
  transform: none;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   9. Druckausgabe
   -------------------------------------------------------------------------- */
@media print {
  .site-header,
  .site-footer,
  .btn-row,
  .nav {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .section {
    padding-block: 1.5rem;
    break-inside: avoid;
  }
}