/* ============================================================
   base.css
   Globale Grundlagen: Tokens, Fonts, Base, Layout, Navigation,
   Hero, CTA, Footer, Feedback und globale Responsive-Regeln
   ============================================================ */
/* ============================================================
   0. Design-Tokens (:root)
   ============================================================ */
:root {
  /* Farben – Marke */
  --color-primary: #447c7f;
  --color-primary-dark: #1e8a86;
  --color-teal: #2db5b0;

  /* Farben – Akzent (Senfgold) */
  --color-accent: #c49a3c;
  --color-accent-dark: #a6812f;
  --color-accent-light: rgba(196, 154, 60, 0.12);

  /* Farben – Text */
  --color-text: #2d2a26;
  --color-text-light: #555555;
  --color-muted: #6b7280;

  /* Farben – Hintergründe & Rahmen */
  --color-white: #ffffff;
  --color-bg: #ffffff;
  --color-bg-light: #f8fafb;
  --color-bg-grey: #f4f6f8;
  --color-bg-subtle: #f0f4f5;
  --color-bg-sand: #e8dfd0;
  --color-border: #e2e8f0;

  /* Zusätzliche Farbtokens */
  --color-sand: #d6c6a8; /* Wärme: Akzentlinien, Nummern, Card-Rahmen */
  --color-sand-light: #f5eee8; /* Dezente Hintergründe */
  --color-petrol: #1a3c40; /* CTA-Block Hintergrund */

  /* Typografie – Schriftfamilien */
  --font-family:
    "PT Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: "Libre Baskerville", Georgia, "Times New Roman", serif;

  /* Typografie */
  --font-size-base: 1rem;
  --line-height-base: 1.75;
  --fs-h1: clamp(2rem, 5vw, 3.25rem);
  --fs-h2: clamp(1.5rem, 3vw, 2.25rem);
  --fs-h3: clamp(1.125rem, 2vw, 1.5rem);
  --fs-small: 0.875rem;

  /* Layout */
  --container-max: 1160px;
  --container-padding: 1.5rem;
  --header-height: 72px;

  /* Abstände */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;

  /* UI */
  --radius: 6px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --transition: 200ms ease;

  /* Feld-Ziffern (#1 #2 #3) — Startseite */
  --num-field-size: clamp(2.5rem, 4vw, 3rem); /* ~40–48px */
  --num-field-spacing: -0.02em;
  --num-field-mb: 1.25rem;

  /* Schritt-Ziffern (01–04) — Ansatz */
  --num-step-size: clamp(1.25rem, 2vw, 1.625rem); /* ~20–26px */
  --num-step-spacing: 0.05em;
  --num-step-mb: 0.75rem;

  /* Case-Ziffern (#1–#4) — Referenzen */
  --num-case-size: 1rem; /* 16px */
  --num-case-spacing: 0.06em;
  --num-case-mb: 0.5rem;
}

/* ============================================================
   1. Schriften (self-hosted PT Sans)
   ============================================================ */

/* Libre Baskerville – Headlines (self-hosted, woff2) */
@font-face {
  font-family: "Libre Baskerville";
  src: url("/fonts/libre-baskerville-v24-latin-regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Libre Baskerville";
  src: url("/fonts/libre-baskerville-v24-latin-italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Libre Baskerville";
  src: url("/fonts/libre-baskerville-v24-latin-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* PT Sans – Fließtext (self-hosted, woff2) */
@font-face {
  font-family: "PT Sans";
  src: url("/fonts/PTSans-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "PT Sans";
  src: url("/fonts/PTSans-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "PT Sans";
  src: url("/fonts/PTSans-Italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "PT Sans";
  src: url("/fonts/PTSans-BoldItalic.woff2") format("woff2");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

/* ============================================================
   2. Reset & Box-Model
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ============================================================
   3. Typografie
   ============================================================ */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-text-size-adjust: 100%;
}

main {
  flex: 1;
  padding-top: var(--header-height);
}

h1,
h2,
h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
  margin-top: 0;
}

h1 {
  font-size: var(--fs-h1);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: var(--fs-h2);
  line-height: 1.28;
  letter-spacing: -0.005em;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: var(--fs-h3);
  line-height: 1.32;
  letter-spacing: 0;
  margin-bottom: 1rem;
}

p {
  margin: 0;
  line-height: var(--line-height-base);
}

p + p {
  margin-top: 1rem;
}

strong {
  font-weight: 700;
}

/* ============================================================
   4. Layout-Helfer
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

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

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

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

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

.section--formate {
  padding-block: 2rem;
}

.section--grey--formate {
  padding-block: 2.5rem;
}
/* Section-Label über Überschriften */
.section__label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

/* Intro-Absatz unter Bereichsüberschriften */
.section__intro {
  max-width: 680px;
  color: var(--color-text-light);
  margin-bottom: 2.5rem;
}

.section__intro p:not(.section__label) {
  font-size: 1rem;
}

/* Startseite: oberer Abstand vor dem Narrative-Gap-Block */
.cards-section {
  padding-block-start: 4rem;
}

/* Invertierte Sand-Section: außen weiß, innen sand */
.section--sand-inv {
  background: #ffffff;
}
.section--sand-inv .teaser-split__item {
  background: var(--color-sand-light);
  border-radius: 12px;
  padding: 2rem;
}

/* Hover-Effekt für invertierte Sand-Kacheln (analog zu .card) */
.section--sand-inv .teaser-split__item {
  transition:
    box-shadow var(--transition),
    transform var(--transition);
}

.section--sand-inv .teaser-split__item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Startseite: teaser-split-Karten auf Sand */
.section--sand .teaser-split__item {
  background: #ffffff;
  border: none;
  box-shadow: none;
}

.card__link {
  display: inline-block;
  margin-top: 1.25rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

.card__link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* ============================================================
   CARDS – 3-Spalten-Karten-Raster (Startseite + Daten-Seite)
   ============================================================ */

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  transition:
    box-shadow var(--transition),
    transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Nummer – klein, teal (Standard: Daten-Seite) */
.card__num {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1;
  color: var(--color-primary);
  margin: 0 0 0.5rem;
}

/* Modifier: groß, sand, Serif (Startseite) */
.card__num--large {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 4vw, 3rem);
  font-weight: 400;
  color: var(--color-sand);
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.card__title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.card__sub {
  font-size: 1rem;
  font-style: italic;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.card__text {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.7;
  flex: 1;
}

/* Listenblock innerhalb einer Card (Daten-Seite) */
.card__list {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding-left: 1.25rem;
  margin: 0 0 1rem;
}

.card__list li {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--color-text);
}


/* ============================================================
   5. Buttons
   ============================================================ */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  line-height: 1.4;
  transition:
    background-color 0.22s ease,
    color 0.22s ease,
    border-color 0.22s ease,
    box-shadow 0.22s ease,
    transform 0.14s ease;
}

/* --- Gold / Primary ---
   .btn--outline bleibt aus HTML-Kompatibilitätsgründen Alias
   der primären Gold-Variante. */
.btn--primary,
.btn--outline {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn--primary:hover,
.btn--outline:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-white);
}

/* --- White Outline (z. B. im CTA-Band) --- */
.btn--outline-white {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.85);
}

.btn--outline-white:hover {
  background-color: rgba(255, 255, 255, 0.14);
  border-color: var(--color-white);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(6, 60, 56, 0.06);
}

/* --- White Button (generisch) --- */
.btn--white {
  background-color: var(--color-white);
  color: var(--color-accent-dark);
  border-color: var(--color-white);
}

.btn--white:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(6, 60, 56, 0.12);
}

/* --- CTA-Sonderfall ---
   .btn--white wird im CTA-Band als Gold-Variante verwendet. */
.cta-block .btn--white {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.cta-block .btn--white:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.15);
}

/* --- Small Modifier --- */
.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.9375rem;
}

/* --- Full Width --- */
.btn--full {
  width: 100%;
  text-align: center;
}

/* ============================================================
   6. Header & Navigation
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* Logo */
.site-header__logo {
  text-decoration: none;
  flex-shrink: 0;
}

/* Logo-Bild proportional halten */
.site-header__logo img {
  height: 44px;
  width: auto;
  max-width: none;
  object-fit: contain;
  display: block;
}

/* Nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.site-nav__link {
  display: inline-block;
  padding: 0.5rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-decoration: none;
  border-radius: var(--radius);
  transition:
    color var(--transition),
    background-color var(--transition);
  white-space: nowrap;
}

.site-nav__link:hover {
  color: var(--color-primary);
  background-color: var(--color-bg-light);
}

.site-nav__link--active {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  border-radius: 0;
}

.site-nav__link--cta {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.site-nav__link--cta:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
}

/* Dropdown unter "Leistungen" */
.site-nav__dropdown-wrapper {
  position: relative;
}

.site-nav__dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  min-width: 220px;
  padding: 0.5rem 0;
  list-style: none;
  z-index: 200;
}

.site-nav__dropdown-wrapper:hover .site-nav__dropdown,
.site-nav__dropdown-wrapper:focus-within .site-nav__dropdown {
  display: block;
}

.site-nav__dropdown-link {
  display: block;
  padding: 0.625rem 1.25rem;
  font-size: 0.9375rem;
  color: var(--color-text);
  text-decoration: none;
  transition:
    color var(--transition),
    background-color var(--transition);
  white-space: nowrap;
}

.site-nav__dropdown-link:hover {
  color: var(--color-primary);
  background-color: var(--color-bg-light);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  border-radius: var(--radius);
  transition: background-color var(--transition);
}

.nav-toggle:hover {
  background-color: var(--color-bg-light);
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition:
    transform var(--transition),
    opacity var(--transition);
  transform-origin: center;
}

.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);
}

/* ============================================================
   7. Footer
   ============================================================ */
.site-footer {
  background-color: #132e31; /* dunkler Petrol-Ton für den Footer */
  border-top: none;
  padding: 2rem 0;
}

.site-footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer__copy {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
}

.site-footer__links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
}

.site-footer__links a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color var(--transition);
}

.site-footer__links a:hover {
  color: #ffffff;
}

.site-footer__methodlink {
  font-size: inherit;
  color: var(--color-muted);
}

.site-footer__methodlink a {
  color: inherit;
}

/* ============================================================
   8. Hero
   ============================================================ */
.hero {
  background: linear-gradient(135deg, #59565d 0%, #3e8688 55%, #2db5b0 100%);
  color: var(--color-white);
  text-align: center;
  padding-block: 6rem 5rem;
}

.hero--compact {
  padding-block: 3rem 3.5rem;
}

.hero__inner {
  max-width: 780px;
  margin: 0 auto;
}

.hero__label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 1.25rem;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: 1.25rem;
  line-height: 1.08;
  hyphens: auto;
  overflow-wrap: break-word;
  word-break: normal;
  text-wrap: balance;
}

.hero__sub {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.88);
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   Globaler CTA-Block
   ============================================================ */
.cta-block {
  background: var(--color-petrol);
  color: var(--color-white);
  text-align: center;
  padding-block: 5rem;
}

.cta-block h2 {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.cta-block p {
  color: rgba(255, 255, 255, 0.88);
  max-width: 520px;
  margin: 0 auto 2rem;
}

.cta-block__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   17. Feedback-Meldungen (.alert)
   ============================================================ */
.alert {
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  max-width: 900px;
  margin-inline: auto;
}

.alert--success {
  background-color: #e8f8f7;
  border: 1px solid var(--color-primary);
  color: var(--color-primary-dark);
}

.alert--error {
  background-color: #fdf2f2;
  border: 1px solid #e57373;
  color: #c62828;
}

/* ============================================================
   Responsive – global
   ============================================================ */

/* — bis 768px: globale Navigation, Hero und Footer — */
@media (max-width: 768px) {
  /* Hamburger sichtbar */
  .nav-toggle {
    display: flex;
    flex: 0 0 40px;
    margin-left: auto;
  }

  /* Header enger auf Mobile */
  .hero h1 {
    font-size: clamp(2.2rem, 8vw, 3.2rem);
    line-height: 1.08;
  }

  .site-header__inner {
    gap: 0.75rem;
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .site-header__logo {
    min-width: 0;
  }

  .site-header__logo img {
    height: 36px;
    width: auto;
    max-width: 100%;
  }

  /* Mobile Nav-Menü */
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    width: 100%;
    background-color: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav__dropdown-wrapper {
    width: 100%;
  }

  .site-nav__link {
    display: block;
    width: 100%;
    padding: 0.75rem 0.5rem;
    border-radius: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .site-nav__link--cta {
    margin-left: 0;
    margin-top: 0.75rem;
    text-align: center;
    border-radius: var(--radius);
  }

  /* Dropdown auf Mobile: flach integriert anzeigen */
  .site-nav__dropdown {
    display: flex;
    flex-direction: column;
    position: static;
    transform: none;
    box-shadow: none;
    background: transparent;
    border: none;
    border-left: 2px solid var(--color-primary);
    padding: 0 0 0 1rem;
    margin: 0.25rem 0 0.5rem 0;
    gap: 0;
    min-width: 0;
    width: 100%;
  }

  .site-nav__dropdown-link {
    display: block;
    font-size: 0.875rem;
    padding: 0.375rem 0;
    color: var(--color-text);
  }

  /* Footer */
  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* — bis 600px: Hero, CTA — */
@media (max-width: 600px) {
  .hero {
    padding-block: 5rem 4rem;
  }
  .cta-block {
    padding-block: 3.5rem;
  }
}

/* Stabilisiert die Layoutbreite zwischen Seiten mit und ohne vertikale Scrollbar */
html {
  scrollbar-gutter: stable;
}