/* ============================================================
   KAREVE GMBH – Stylesheet
   Mobile-First, vollständig responsiv
   ============================================================ */

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --clr-primary:     #1a3a5c;
  --clr-primary-lt:  #2a5080;
  --clr-accent:      #c8a96e;
  --clr-accent-lt:   #d9be8e;
  --clr-bg:          #ffffff;
  --clr-bg-alt:      #f4f6f9;
  --clr-text:        #2c2c2c;
  --clr-text-muted:  #6b7280;
  --clr-border:      #e2e8f0;

  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --radius:    8px;
  --shadow-sm: 0 1px 4px rgba(0,0,0,.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,.10);
  --shadow-lg: 0 8px 40px rgba(0,0,0,.14);

  --transition: 0.25s ease;
  --max-w: 1160px;

  /* Nav-Höhe als Variable für konsistentes Offset */
  --nav-h: 64px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  /* Verhindert horizontales Scrollen auf Mobilgeräten */
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--clr-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--clr-accent); }

img { display: block; max-width: 100%; }
ul  { list-style: none; }

/* ── Container ────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 1.5rem);
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .02em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--clr-accent);
  color: var(--clr-primary);
  border-color: var(--clr-accent);
}
.btn--primary:hover {
  background: var(--clr-accent-lt);
  border-color: var(--clr-accent-lt);
  color: var(--clr-primary);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.7);
}
.btn--outline:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}

.btn--full { width: 100%; text-align: center; }

/* ── Section Helpers ──────────────────────────────────────── */
.section        { padding-block: clamp(3rem, 8vw, 5rem); }
.section--alt   { background: var(--clr-bg-alt); }

.section__header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.section__title {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--clr-primary);
  line-height: 1.25;
  margin-bottom: .75rem;
}

.section__subtitle {
  color: var(--clr-text-muted);
  font-size: clamp(.9rem, 2.5vw, 1.05rem);
}

/* ── Header / Navigation ──────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--clr-border);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 1rem;
}

.nav__logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--clr-primary);
  letter-spacing: -.02em;
  flex-shrink: 0;
}
.nav__logo span { color: var(--clr-accent); }
.nav__logo:hover { color: var(--clr-primary); }

/* Desktop Nav Links */
.nav__list {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav__link {
  font-size: .9rem;
  font-weight: 600;
  color: var(--clr-text);
  letter-spacing: .02em;
  position: relative;
  padding-bottom: 2px;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--clr-accent);
  transition: width var(--transition);
}
.nav__link:hover { color: var(--clr-primary); }
.nav__link:hover::after { width: 100%; }

/* Hamburger Button */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius);
  transition: background var(--transition);
  flex-shrink: 0;
  /* Mindest-Touch-Ziel 44px */
  min-width: 44px;
  min-height: 44px;
  align-items: center;
}
.nav__toggle:hover { background: var(--clr-bg-alt); }
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
/* Animiertes X beim Öffnen */
.nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(26,58,92,.92) 0%, rgba(42,80,128,.85) 100%),
    url('https://images.unsplash.com/photo-1560518883-ce09059eeffa?w=1600&q=80') center/cover no-repeat;
  padding-top: var(--nav-h);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,.3) 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding-block: clamp(3rem, 8vw, 5rem);
}

.hero__eyebrow {
  display: inline-block;
  font-size: clamp(.7rem, 2vw, .8rem);
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 1.25rem;
  border: 1px solid rgba(200,169,110,.4);
  padding: .3rem .9rem;
  border-radius: 100px;
}

.hero__title {
  font-size: clamp(2rem, 7vw, 4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  letter-spacing: -.02em;
}

.hero__subtitle {
  font-size: clamp(.95rem, 2.5vw, 1.15rem);
  color: rgba(255,255,255,.85);
  max-width: 580px;
  margin-bottom: 2.5rem;
  line-height: 1.75;
}

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

/* ── Intro ────────────────────────────────────────────────── */
.intro__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.intro__text h2   { margin-bottom: 1.25rem; }
.intro__text p    { color: var(--clr-text-muted); margin-bottom: 1rem; }
.intro__text p:last-child { margin-bottom: 0; }

.intro__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.stat {
  background: var(--clr-bg-alt);
  border-left: 4px solid var(--clr-accent);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.stat__number {
  display: block;
  font-size: clamp(2rem, 5vw, 2.5rem);
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1;
  margin-bottom: .35rem;
}

.stat__label {
  font-size: .88rem;
  color: var(--clr-text-muted);
  font-weight: 500;
}

/* ── Cards (Leistungen) ───────────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--clr-bg);
  border-radius: calc(var(--radius) * 1.5);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--clr-border);
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.card__icon {
  width: 48px;
  height: 48px;
  background: rgba(26,58,92,.08);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
  flex-shrink: 0;
}
.card__icon svg {
  width: 24px;
  height: 24px;
  color: var(--clr-primary);
}

.card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: .6rem;
}

.card__text {
  font-size: .88rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

/* ── Vorteile ─────────────────────────────────────────────── */
.vorteile__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1.75rem;
}

.vorteil {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
}

.vorteil__marker {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  background: var(--clr-primary);
  color: var(--clr-accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .05em;
}

.vorteil__body h3 {
  font-size: .98rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: .45rem;
}

.vorteil__body p {
  font-size: .88rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

/* ── Prozess / Timeline ───────────────────────────────────── */
.timeline {
  position: relative;
  max-width: 760px;
  margin-inline: auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 27px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--clr-border);
}

.timeline__item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 2rem;
  position: relative;
}
.timeline__item:last-child { margin-bottom: 0; }

.timeline__step {
  flex-shrink: 0;
  width: 54px;
  height: 54px;
  background: var(--clr-primary);
  color: var(--clr-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  font-weight: 800;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 0 5px var(--clr-bg-alt);
}

.timeline__content {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  flex: 1;
  box-shadow: var(--shadow-sm);
}

.timeline__content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: .45rem;
}

.timeline__content p {
  font-size: .88rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

/* ── Kontakt ──────────────────────────────────────────────── */
.kontakt__grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.kontakt__text h2       { margin-bottom: 1rem; }
.kontakt__text > p      { color: var(--clr-text-muted); margin-bottom: 2rem; }

.kontakt__info          { display: flex; flex-direction: column; gap: .9rem; }

.kontakt__item {
  display: flex;
  align-items: center;
  gap: .7rem;
  font-size: .93rem;
  color: var(--clr-text-muted);
}
.kontakt__item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--clr-accent);
}
.kontakt__item a { color: var(--clr-text-muted); }
.kontakt__item a:hover { color: var(--clr-primary); }

/* Form */
.kontakt__form {
  background: var(--clr-bg-alt);
  border: 1px solid var(--clr-border);
  border-radius: calc(var(--radius) * 1.5);
  padding: clamp(1.25rem, 4vw, 2.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.form__group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--clr-text);
}

.form__group input,
.form__group textarea {
  padding: .7rem 1rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem; /* 16px verhindert iOS Auto-Zoom */
  color: var(--clr-text);
  background: var(--clr-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
  width: 100%;
  /* Mindest-Touch-Höhe */
  min-height: 44px;
}
.form__group input:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(26,58,92,.1);
}

.form__group--checkbox {
  flex-direction: row;
  align-items: flex-start;
  gap: .6rem;
}
.form__group--checkbox input[type="checkbox"] {
  margin-top: .25rem;
  flex-shrink: 0;
  accent-color: var(--clr-primary);
  width: 18px;
  height: 18px;
  cursor: pointer;
}
.form__group--checkbox label {
  font-size: .82rem;
  font-weight: 400;
  color: var(--clr-text-muted);
  line-height: 1.5;
}
.form__group--checkbox label a {
  color: var(--clr-primary);
  text-decoration: underline;
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--clr-primary);
  color: rgba(255,255,255,.75);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

.footer__brand .nav__logo {
  color: #fff;
  font-size: 1.15rem;
  margin-bottom: .75rem;
  display: inline-block;
}
.footer__brand .nav__logo span { color: var(--clr-accent); }
.footer__brand p {
  font-size: .86rem;
  line-height: 1.7;
  max-width: 300px;
}

.footer__links h4 {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  margin-bottom: 1rem;
}

.footer__links ul { display: flex; flex-direction: column; gap: .55rem; }
.footer__links a {
  font-size: .86rem;
  color: rgba(255,255,255,.7);
  transition: color var(--transition);
  /* Touch-freundliche Mindesthöhe */
  display: inline-block;
  padding-block: .15rem;
}
.footer__links a:hover { color: var(--clr-accent); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-block: 1.25rem;
}
.footer__bottom p {
  font-size: .8rem;
  color: rgba(255,255,255,.45);
  text-align: center;
}

/* ── Legal Pages ──────────────────────────────────────────── */
.legal {
  padding-top: calc(var(--nav-h) + clamp(2rem, 5vw, 4rem));
  padding-bottom: clamp(3rem, 8vw, 5rem);
}

.legal__header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--clr-border);
  padding-bottom: 1.75rem;
}

.legal__header h1 {
  font-size: clamp(1.6rem, 5vw, 2.5rem);
  font-weight: 800;
  color: var(--clr-primary);
  margin-bottom: .5rem;
}

.legal__header p {
  color: var(--clr-text-muted);
  font-size: .9rem;
}

.legal__body h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-top: 2.25rem;
  margin-bottom: .7rem;
}

.legal__body h3 {
  font-size: .98rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-top: 1.5rem;
  margin-bottom: .45rem;
}

.legal__body p {
  color: var(--clr-text-muted);
  margin-bottom: .75rem;
  font-size: .93rem;
  line-height: 1.75;
}

.legal__body ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: .75rem;
}

.legal__body ul li {
  color: var(--clr-text-muted);
  font-size: .93rem;
  margin-bottom: .35rem;
}

.legal__body a {
  color: var(--clr-primary);
  text-decoration: underline;
}

.legal__back {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .88rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-bottom: 2rem;
  padding: .5rem 0;
  transition: gap var(--transition);
  /* Touch-freundlich */
  min-height: 44px;
}
.legal__back:hover { gap: .65rem; color: var(--clr-primary); }

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */

/* ── Tablet breit: ≤ 1024px ───────────────────────────────── */
@media (max-width: 1024px) {
  .intro__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

  .kontakt__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
  .footer__brand p { max-width: 100%; }
}

/* ── Tablet schmal / kleines Desktop: ≤ 768px ────────────── */
@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  /* Navigation: Hamburger-Menü */
  .nav__list {
    display: none;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 2rem 1.5rem;
    gap: 0;
    overflow-y: auto;
    border-top: 1px solid var(--clr-border);
    z-index: 999;
  }

  .nav__list.open {
    display: flex;
  }

  .nav__list li {
    border-bottom: 1px solid var(--clr-border);
  }
  .nav__list li:last-child { border-bottom: none; }

  .nav__link {
    display: block;
    padding: 1rem 0;
    font-size: 1.1rem;
    color: var(--clr-primary);
  }
  .nav__link::after { display: none; }

  .nav__toggle { display: flex; }

  /* Hero */
  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero__actions .btn {
    width: 100%;
    max-width: 320px;
    text-align: center;
  }

  /* Intro Stats: 1 Spalte */
  .intro__stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  /* Karten: 2 Spalten */
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Vorteile: 1 Spalte */
  .vorteile__grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* Timeline: Linie ausblenden, kompakter */
  .timeline::before { display: none; }

  .timeline__item {
    gap: 1rem;
  }

  .timeline__step {
    width: 44px;
    height: 44px;
    font-size: .95rem;
    box-shadow: none;
  }

  /* Kontaktformular: Vorname/Nachname übereinander */
  .form__row {
    grid-template-columns: 1fr;
  }

  /* Footer: 1 Spalte */
  .footer__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer__brand { grid-column: auto; }
}

/* ── Smartphone: ≤ 480px ──────────────────────────────────── */
@media (max-width: 480px) {
  /* Karten: 1 Spalte */
  .cards {
    grid-template-columns: 1fr;
  }

  /* Hero: etwas kompakter */
  .hero__content {
    padding-block: 2.5rem;
  }

  /* Buttons volle Breite im Hero */
  .hero__actions .btn {
    max-width: 100%;
  }

  /* Kontaktformular Padding */
  .kontakt__form {
    padding: 1.25rem;
  }

  /* Stat-Karten: kompakter */
  .stat {
    padding: 1rem 1.25rem;
  }

  /* Vorteil-Marker kleiner */
  .vorteil__marker {
    width: 36px;
    height: 36px;
    font-size: .72rem;
  }

  /* Timeline Step kleiner */
  .timeline__step {
    width: 38px;
    height: 38px;
    font-size: .85rem;
  }

  .timeline__content {
    padding: 1rem 1.1rem;
  }

  /* Sektionen etwas enger */
  .section { padding-block: 2.5rem; }
}

/* ── Sehr kleine Geräte: ≤ 360px ─────────────────────────── */
@media (max-width: 360px) {
  .nav__logo { font-size: 1.1rem; }

  .hero__title {
    font-size: 1.85rem;
  }

  .btn {
    padding: .65rem 1.25rem;
    font-size: .88rem;
  }
}

/* ── Touch-Geräte: Hover-Effekte deaktivieren ─────────────── */
@media (hover: none) {
  .card:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
  }
  .btn--primary:hover,
  .btn--outline:hover {
    transform: none;
  }
}