/* ==========================================================================
   EPL NovaSoft – Stylesheet
   Mobile-First, responsive, mit Fokus auf Barrierefreiheit (WCAG 2.1 AA)
   Alle Text-/Button-Farbkombinationen unten sind gegen den jeweiligen
   Hintergrund auf einen Kontrast von mind. 4.5:1 geprüft.
   ========================================================================== */

/* Lokal gehostete Schrift (statt Google Fonts) – vermeidet die Übertragung
   der Besucher-IP an Google beim Laden externer Schriftdateien.
   Eine einzige Variable-Font-Datei deckt die Schnitte 100–900 ab. */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/inter-latin-variable.woff2") format("woff2");
}

:root {
  --color-bg: #ffffff;
  --color-surface: #f6f8fb;       /* Alternierender Sektionshintergrund */
  --color-surface-2: #eef2f7;     /* Karten-/Hover-Flächen */
  --color-text: #16202b;
  --color-text-muted: #56606f;

  --color-primary: #0062a3;       /* AA-sicheres Interaktions-Blau (Links, Buttons, Fokus) */
  --color-primary-dark: #004a7a;
  --color-primary-vivid: #0071bc; /* echtes Markenblau (aus Logo) – nur dekorativ (Flächen, Icons) */
  --color-primary-light: #e8f3fb;

  --color-accent: #2dab66;        /* echtes Markengrün (aus Logo) – nur dekorativ */
  --color-accent-dark: #207948;   /* AA-sicheres Grün für Text/Badges */
  --color-accent-light: #e6f7ee;

  --color-border: #e2e6ec;
  --color-error: #b3261e;

  --font-base: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --spacing: 1rem;
  --max-content-width: 68rem;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 1px rgba(16, 24, 40, 0.04);
  --shadow-md: 0 8px 20px rgba(16, 24, 40, 0.08);
  --shadow-lg: 0 20px 45px rgba(16, 24, 40, 0.14);

  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

/* Skip-Link: für Tastatur-/Screenreader-Nutzung sichtbar, sonst versteckt */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary-dark);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 200;
  font-weight: 600;
}

.skip-link:focus {
  left: 0;
  top: 0;
}

/* Sichtbarer Fokus-Indikator für alle interaktiven Elemente */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-primary-dark);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ==========================================================================
   Header / Navigation
   ========================================================================== */

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition), border-color var(--transition);
}

header.is-scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

nav[aria-label="Hauptnavigation"] {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem var(--spacing);
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0.75rem var(--spacing);
}

.logo img {
  display: block;
  height: auto;
  width: 100%;
  max-width: 200px;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  cursor: pointer;
  order: 2;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

#primary-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  flex-basis: 100%;
  order: 3;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition);
}

#primary-nav.is-open {
  max-height: 20rem;
}

#primary-nav a {
  display: block;
  color: var(--color-text);
  text-decoration: none;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: background-color var(--transition), color var(--transition);
}

#primary-nav a:hover,
#primary-nav a:focus-visible {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

#primary-nav a[aria-current="page"] {
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
  font-weight: 700;
}

/* Ab Tablet-Breite: horizontale Navigation, Menü-Button ausgeblendet */
@media (min-width: 48rem) {
  .nav-toggle {
    display: none;
  }

  #primary-nav {
    flex-direction: row;
    flex-basis: auto;
    max-height: none;
    overflow: visible;
    order: 2;
    gap: 0.25rem;
  }

  #primary-nav a {
    padding: 0.5rem 0.875rem;
  }
}

/* ==========================================================================
   Layout-Grundlagen
   ========================================================================== */

main {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0 var(--spacing);
  min-height: 60vh;
}

section + section {
  margin-top: 4rem;
}

main h2 {
  font-size: clamp(1.375rem, 1.1rem + 1vw, 1.75rem);
  margin-bottom: 1.25rem;
}

main ul {
  padding-left: 1.25rem;
}

main li {
  margin-bottom: 0.5rem;
}

main li::marker {
  color: var(--color-primary);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  padding: 3.5rem 0 2.5rem;
  overflow: hidden;
  isolation: isolate;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.35;
}

.hero::before {
  width: 22rem;
  height: 22rem;
  background: var(--color-primary-vivid);
  top: -10rem;
  right: -6rem;
}

.hero::after {
  width: 16rem;
  height: 16rem;
  background: var(--color-accent);
  bottom: -8rem;
  left: -4rem;
  opacity: 0.25;
}

.hero h1 {
  font-size: clamp(1.75rem, 1.3rem + 2vw, 2.75rem);
  margin: 0 0 1rem;
  max-width: 40rem;
}

.subtext {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 40rem;
  margin: 0 0 1.75rem;
}

main > h1 + .subtext {
  margin-top: -0.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ==========================================================================
   Buttons / Links
   ========================================================================== */

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition);
}

.cta-button:hover,
.cta-button:focus-visible {
  background-color: #003a5c;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
}

.cta-button--ghost {
  background: transparent;
  color: var(--color-primary-dark);
  border: 1.5px solid var(--color-border);
  box-shadow: none;
}

.cta-button--ghost:hover,
.cta-button--ghost:focus-visible {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  box-shadow: none;
  transform: translateY(-2px);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--color-primary-dark);
  font-weight: 600;
  text-decoration: none;
}

.card-link:hover,
.card-link:focus-visible {
  text-decoration: underline;
}

.card-link .arrow {
  transition: transform var(--transition);
}

.card-link:hover .arrow,
.card-link:focus-visible .arrow {
  transform: translateX(4px);
}

/* ==========================================================================
   Produkt-Spotlight (Startseite)
   ========================================================================== */

.badge {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
}

/* ==========================================================================
   Abschnitte mit alternierendem Hintergrund
   ========================================================================== */

.section-surface {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2rem var(--spacing);
  margin-left: calc(-1 * var(--spacing));
  margin-right: calc(-1 * var(--spacing));
}

@media (min-width: 40rem) {
  .section-surface {
    padding: 3rem;
    margin-left: 0;
    margin-right: 0;
  }
}

/* Philosophie / Zitat-Block */
.philosophy {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  margin: 1.5rem 0;
}

.philosophy p {
  position: relative;
  z-index: 1;
  font-size: 1.0625rem;
}

.philosophy p:first-child::before {
  content: "\201C";
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 4rem;
  line-height: 1;
  color: var(--color-primary-vivid);
  opacity: 0.25;
  margin-bottom: -0.75rem;
}

/* CTA-Panel (z. B. "Interesse geweckt?") */
.section-cta {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-vivid));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem 1.75rem;
  text-align: center;
}

.section-cta h2 {
  color: #fff;
  margin-top: 0;
}

.section-cta p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 34rem;
  margin: 0 auto 1.5rem;
}

.section-cta .cta-button {
  background-color: #fff;
  color: var(--color-primary-dark);
}

.section-cta .cta-button:hover,
.section-cta .cta-button:focus-visible {
  background-color: #eef6fc;
  color: var(--color-primary-dark);
}

/* ==========================================================================
   Formular (Kontaktseite)
   ========================================================================== */

.form-field {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

label {
  font-weight: 600;
  font-size: 0.9375rem;
}

input,
textarea {
  font: inherit;
  padding: 0.7rem 0.875rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus,
textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.field-error {
  color: var(--color-error);
  font-size: 0.875rem;
  margin: 0;
}

button {
  font: inherit;
  background-color: var(--color-primary-dark);
  color: #fff;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition);
}

button:hover {
  background-color: #003a5c;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

#form-status {
  font-weight: 600;
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
  margin-top: 4rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

footer > * {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 1.5rem var(--spacing) 0;
}

footer p {
  color: var(--color-text-muted);
  margin: 0;
}

footer nav {
  padding-top: 0.5rem;
  padding-bottom: 1.5rem;
}

footer nav ul {
  list-style: none;
  display: flex;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
}

footer nav a {
  color: var(--color-primary);
  text-decoration: none;
  font-size: 0.9375rem;
}

footer nav a:hover,
footer nav a:focus-visible {
  text-decoration: underline;
}

/* ==========================================================================
   Rechtstexte: unübersehbarer Platzhalter-Hinweis (Impressum/Datenschutz)
   ========================================================================== */

.placeholder-notice[hidden] {
  display: none;
}

.placeholder-notice {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  background: #fdecea;
  border: 2px solid var(--color-error);
  color: #7a1912;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin: 1.5rem 0 2rem;
  font-weight: 600;
}

.placeholder-notice__icon {
  font-size: 1.25rem;
  line-height: 1;
}

/* Browser heben <mark> standardmäßig gelb hervor – das soll nur für
   unbefüllte Platzhalter gelten. Sobald js/legal-data.js die Klasse
   .placeholder entfernt, sieht das <mark> wie normaler Text aus. */
main mark {
  background: transparent;
  color: inherit;
  font-style: normal;
  font-weight: inherit;
  padding: 0;
  border-radius: 0;
}

mark.placeholder {
  background: #fdecea;
  color: var(--color-error);
  font-style: italic;
  font-weight: 600;
  padding: 0 0.25rem;
  border-radius: 3px;
}

/* ==========================================================================
   Produktseiten: Hero mit Illustration + Funktionslisten mit Icons
   ========================================================================== */

/* Versteckter Träger für <symbol>-Definitionen (nur per <use> referenziert) */
.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.page-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  padding-top: 0.5rem;
}

.page-hero__illustration img {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 48rem) {
  .page-hero {
    grid-template-columns: 1.1fr 1fr;
    gap: 3rem;
  }
}

.icon-list {
  list-style: none;
  padding-left: 0;
}

.icon-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.625rem;
}

.feature-icon {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  margin-top: 0.125rem;
  color: var(--icon-color, var(--color-primary-vivid));
}

.icon-list--blue {
  --icon-color: var(--color-primary-vivid);
}