/* ==========================================================================
   Montage-Service Püttmann – Haupt-Stylesheet
   Mobile-first. Breakpoints: Tablet ab 768px, Desktop ab 1024px.
   ========================================================================== */

/* --- Schriften ------------------------------------------------------------ */
@font-face {
  font-family: "Inter";
  src: url("../fonts/Inter-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/Inter-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/Inter-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/Inter-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* --- Variablen -------------------------------------------------------------
   Farben aus dem Firmenlogo: Petrol/Türkis, Schwarz, Weiß.
   ========================================================================== */
:root {
  --color-primary: #1a81a9;
  --color-primary-dark: #0f4c5c;
  --color-primary-light: #4c9fbc;
  --color-black: #010101;
  --color-white: #ffffff;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7f8;
  --color-text: #1e2528;
  --color-text-muted: #566066;
  --color-border: #dde3e5;
  --color-ok: #1e7a3d;
  --color-error: #b91c1c;

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

  --radius: 8px;
  --max-width: 75rem;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3.5rem;
  --space-xl: 5.5rem;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

ul { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 var(--space-sm);
  color: var(--color-black);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.25rem; }

p { margin: 0 0 var(--space-sm); }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

section {
  padding: var(--space-lg) 0;
}

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

/* --- Barrierefreiheit ---------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Skip-Link (Barrierefreiheit) --------------------------------------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.75rem 1.25rem;
  z-index: 1000;
}
.skip-link:focus {
  left: var(--space-sm);
  top: var(--space-sm);
}

/* --- Header / Navigation ------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) 0;
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.site-header__logo img {
  height: 48px;
  width: auto;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0;
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-black);
}

.main-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.main-nav.is-open {
  max-height: 24rem;
}

.main-nav__list {
  display: flex;
  flex-direction: column;
  padding: var(--space-sm) 0;
}

.main-nav__list a {
  display: block;
  padding: var(--space-xs) var(--space-sm);
  color: var(--color-text);
  font-weight: 500;
}

.main-nav__list a:hover,
.main-nav__list a[aria-current="page"] {
  color: var(--color-primary);
  text-decoration: none;
}

/* --- Hero ---------------------------------------------------------------- */
.hero {
  position: relative;
  color: var(--color-white);
  background-size: cover;
  background-position: center;
  padding: var(--space-xl) 0;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 76, 92, 0.88), rgba(1, 1, 1, 0.72));
}

.hero__inner {
  position: relative;
  max-width: 42rem;
}

.hero h1 {
  color: var(--color-white);
  font-size: 2.2rem;
}

.hero p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.92);
}

/* --- Buttons --------------------------------------------------------------- */
.btn {
  display: inline-block;
  font-family: var(--font-base);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
}

.btn:hover { text-decoration: none; }

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

.btn--outline {
  background: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}
.btn--outline:hover { background: rgba(255, 255, 255, 0.15); }

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

/* --- Vorteile / Grid ------------------------------------------------------ */
.benefits {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.benefit-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-sm);
}

.benefit-card h3 {
  color: var(--color-primary-dark);
  font-size: 1.05rem;
}

.benefit-card::before {
  content: "";
  display: block;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: var(--space-xs);
  border-radius: 50%;
  background: var(--color-primary);
}

/* --- Leistungen ------------------------------------------------------------ */
.services {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.service-card__body { padding: var(--space-sm); }

.service-card h2,
.service-card h3 { color: var(--color-primary-dark); }

/* --- Section mit Hintergrundbild ------------------------------------------ */
.section-image {
  position: relative;
  color: var(--color-white);
  background-size: cover;
  background-position: center;
}

.section-image::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(1, 1, 1, 0.6);
}

.section-image .container {
  position: relative;
}

.section-image h2 { color: var(--color-white); }
.section-image p { color: rgba(255, 255, 255, 0.92); }

/* --- Kontakt / Info-Karten -------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-md);
}

.contact-info__item {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.contact-info__item dt {
  font-weight: 600;
  min-width: 6rem;
  color: var(--color-primary-dark);
}

.contact-info__item dd {
  margin: 0;
}

.map-wrapper {
  margin-top: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.map-wrapper iframe {
  width: 100%;
  height: 300px;
  border: 0;
  display: block;
}

.map-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* --- Kontaktformular (aus formular/contact-form.css übernommen und an
   das Farbschema angepasst) ------------------------------------------------ */
.kf-form {
  --kf-accent: var(--color-primary);
  --kf-accent-text: var(--color-white);
  --kf-text: var(--color-text);
  --kf-muted: var(--color-text-muted);
  --kf-border: var(--color-border);
  --kf-border-focus: var(--color-primary);
  --kf-bg-field: var(--color-white);
  --kf-radius: var(--radius);
  --kf-gap: 1rem;
  --kf-ok: var(--color-ok);
  --kf-error: var(--color-error);

  max-width: 32rem;
  color: var(--kf-text);
  font: inherit;
}

.kf-hp {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.kf-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: var(--kf-gap);
}

.kf-field label {
  font-weight: 600;
  font-size: 0.95rem;
}

.kf-optional {
  font-weight: 400;
  color: var(--kf-muted);
}

.kf-form input,
.kf-form textarea {
  font: inherit;
  color: var(--kf-text);
  background: var(--kf-bg-field);
  border: 1px solid var(--kf-border);
  border-radius: var(--kf-radius);
  padding: 0.6rem 0.75rem;
  width: 100%;
  box-sizing: border-box;
}

.kf-form textarea {
  resize: vertical;
  min-height: 7rem;
}

.kf-form input:focus,
.kf-form textarea:focus {
  outline: 2px solid var(--kf-border-focus);
  outline-offset: 1px;
  border-color: var(--kf-border-focus);
}

.kf-privacy {
  font-size: 0.85rem;
  color: var(--kf-muted);
  margin: 0 0 var(--kf-gap);
}

.kf-privacy a { color: var(--kf-accent); }

.kf-submit {
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  color: var(--kf-accent-text);
  background: var(--kf-accent);
  border: none;
  border-radius: var(--kf-radius);
  padding: 0.7rem 1.4rem;
}

.kf-submit:hover { filter: brightness(0.92); }
.kf-submit:disabled { opacity: 0.6; cursor: default; }

.kf-status {
  margin: 0.9rem 0 0;
  font-size: 0.9rem;
}
.kf-status.is-ok { color: var(--kf-ok); }
.kf-status.is-error { color: var(--kf-error); }

/* --- Footer ---------------------------------------------------------------- */
.site-footer {
  background: var(--color-black);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--space-md) 0;
}

.site-footer a {
  color: var(--color-white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.footer-grid h3 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.footer-nav__list li { margin-bottom: 0.4rem; }

.footer-bottom {
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
}

/* --- Rechtstext-Seiten (Impressum/Datenschutz) ----------------------------- */
.legal-content h2 {
  margin-top: var(--space-md);
  color: var(--color-primary-dark);
}

.legal-content address {
  font-style: normal;
}

/* --- Statusseiten (danke/fehler) -------------------------------------------- */
.status-page {
  text-align: center;
  padding: var(--space-xl) 0;
}

/* ==========================================================================
   Tablet ab 768px
   ========================================================================== */
@media (min-width: 768px) {
  h1 { font-size: 2.6rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.35rem; }

  .hero h1 { font-size: 2.8rem; }

  .benefits { grid-template-columns: repeat(2, 1fr); }
  .services { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ==========================================================================
   Desktop ab 1024px
   ========================================================================== */
@media (min-width: 1024px) {
  .nav-toggle { display: none; }

  .main-nav {
    position: static;
    max-height: none;
    overflow: visible;
    background: none;
    border: 0;
  }

  .main-nav__list {
    flex-direction: row;
    gap: var(--space-md);
    padding: 0;
  }

  .main-nav__list a {
    padding: 0.4rem 0;
  }

  .hero h1 { font-size: 3.2rem; }

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

  .contact-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }
}