/* ============================================================
   assets/css/main.css
   Erlandsson – Hauptstylesheet
   Designprinzip: Klares Schwarz-Weiß-System, warme Akzentfarbe,
   viel Weißraum, klare Typografie, kein Overengineering.
   ============================================================ */

/* ── CSS-Variablen ────────────────────────────────────────── */
:root {
  /* Farben */
  --c-bg:        #FAFAF8;
  --c-surface:   #FFFFFF;
  --c-border:    #E8E5E0;
  --c-text:      #1A1916;
  --c-text-muted:#6B6760;
  --c-accent:    #2B5E4E;    /* Dunkelgrün – Vertrauen, Natur */
  --c-accent-lt: #EBF3F0;
  --c-highlight: #C8963E;    /* Goldton – Wert, Qualität */
  --c-danger:    #C0392B;

  /* Typografie */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Source Sans 3', 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Abstände */
  --space-xs:  0.375rem;
  --space-sm:  0.75rem;
  --space-md:  1.25rem;
  --space-lg:  2rem;
  --space-xl:  3.5rem;
  --space-2xl: 6rem;

  /* Layout */
  --max-width:  1160px;
  --radius:     6px;
  --radius-lg:  12px;

  /* Schatten */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md:  0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg:  0 12px 32px rgba(0,0,0,.10);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  font-size: 1rem;
  font-weight: 400;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--c-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; }

/* ── Typografie ───────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-text);
}

h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; font-family: var(--font-body); font-weight: 600; }

p { margin-bottom: var(--space-md); max-width: 68ch; }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: 1.15rem;
  color: var(--c-text-muted);
  max-width: 60ch;
}

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

.section {
  padding-block: var(--space-2xl);
}

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

.section--accent {
  background: var(--c-accent);
  color: #fff;
}

.section__header {
  margin-bottom: var(--space-xl);
}

.section__header h2 { margin-bottom: var(--space-sm); }

.text-center { text-align: center; }
.text-muted  { color: var(--c-text-muted); }

/* ── Navigation ───────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250,250,248,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-text);
  text-decoration: none;
  letter-spacing: -.01em;
}

.nav__links {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.nav__links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--c-text-muted);
  text-decoration: none;
  transition: color .2s;
}

.nav__links a:hover { color: var(--c-text); }

.nav__cta {
  background: var(--c-accent) !important;
  color: #fff !important;
  padding: .45rem 1.1rem;
  border-radius: var(--radius);
  font-weight: 600 !important;
  transition: background .2s !important;
}

.nav__cta:hover { background: #1f4438 !important; }

/* Hamburger (mobil) */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-text);
  margin: 5px 0;
  transition: all .3s;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .2s;
  text-decoration: none;
  line-height: 1;
}

.btn--primary {
  background: var(--c-accent);
  color: #fff;
  border-color: var(--c-accent);
}
.btn--primary:hover {
  background: #1f4438;
  border-color: #1f4438;
  text-decoration: none;
}

.btn--secondary {
  background: transparent;
  color: var(--c-accent);
  border-color: var(--c-accent);
}
.btn--secondary:hover {
  background: var(--c-accent-lt);
  text-decoration: none;
}

.btn--white {
  background: #fff;
  color: var(--c-accent);
  border-color: #fff;
}
.btn--white:hover {
  background: #f0f0ee;
  text-decoration: none;
}

.btn--lg { padding: .9rem 2.2rem; font-size: 1rem; }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  padding-block: var(--space-2xl);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}

.hero__badge {
  display: inline-block;
  background: var(--c-accent-lt);
  color: var(--c-accent);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: .3rem .85rem;
  border-radius: 50px;
  margin-bottom: var(--space-md);
}

.hero__headline {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.1;
  margin-bottom: var(--space-md);
}

.hero__sub {
  font-size: 1.15rem;
  color: var(--c-text-muted);
  margin-bottom: var(--space-xl);
  max-width: 56ch;
}

.hero__ctas {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.hero__trust {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--c-border);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .88rem;
  color: var(--c-text-muted);
}

.trust-item__icon {
  width: 18px;
  height: 18px;
  background: var(--c-accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .65rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ── Karten-Grid ──────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}

.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  position: relative;
  transition: box-shadow .2s, transform .2s;
}

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

.card--highlight {
  border-color: var(--c-accent);
  box-shadow: var(--shadow-md);
}

.card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-highlight);
  color: #fff;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: .25rem .8rem;
  border-radius: 50px;
  white-space: nowrap;
}

.card__name    { font-family: var(--font-display); font-size: 1.35rem; font-weight: 700; margin-bottom: .25rem; }
.card__subtitle{ font-size: .88rem; color: var(--c-text-muted); margin-bottom: var(--space-lg); }
.card__price   { font-size: 2rem; font-weight: 700; font-family: var(--font-display); color: var(--c-accent); }
.card__price-type { font-size: .85rem; color: var(--c-text-muted); margin-bottom: var(--space-lg); }
.card__divider { border: none; border-top: 1px solid var(--c-border); margin-block: var(--space-md); }

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: .65rem;
  font-size: .9rem;
  margin-bottom: .6rem;
  color: var(--c-text);
}

.feature-list li::before {
  content: '✓';
  color: var(--c-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: .05em;
}

/* ── Provision-Rechner ────────────────────────────────────── */
.rechner {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 640px;
  margin-inline: auto;
  box-shadow: var(--shadow-md);
}

.rechner__row { margin-bottom: var(--space-lg); }

.rechner__label {
  display: flex;
  justify-content: space-between;
  font-size: .9rem;
  font-weight: 600;
  margin-bottom: .5rem;
}

.rechner__label span { color: var(--c-accent); }

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 5px;
  background: var(--c-border);
  border-radius: 50px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: var(--c-accent);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 0 3px var(--c-accent-lt);
}

.rechner__result {
  background: var(--c-accent-lt);
  border-radius: var(--radius);
  padding: var(--space-lg);
  text-align: center;
  margin-top: var(--space-lg);
}

.rechner__result__label {
  font-size: .85rem;
  color: var(--c-text-muted);
  margin-bottom: .25rem;
}

.rechner__result__value {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--c-accent);
}

/* ── Direktkontakt-System Block ───────────────────────────── */
.direktkontakt-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.direktkontakt-block__steps { counter-reset: step; }

.step-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.step-item__num {
  width: 36px;
  height: 36px;
  background: var(--c-accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .9rem;
  flex-shrink: 0;
}

.step-item__content h4 { margin-bottom: .25rem; }
.step-item__content p  { font-size: .9rem; color: var(--c-text-muted); margin: 0; }

.price-box {
  background: var(--c-surface);
  border: 2px solid var(--c-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
}

.price-box__main { font-family: var(--font-display); font-size: 2.6rem; font-weight: 700; color: var(--c-accent); }
.price-box__plus { font-size: 1.5rem; color: var(--c-text-muted); margin: .5rem 0; }
.price-box__monthly { font-size: 1.3rem; font-weight: 600; color: var(--c-text); }

/* ── FAQ ──────────────────────────────────────────────────── */
.faq-list { max-width: 720px; margin-inline: auto; }

details {
  border-bottom: 1px solid var(--c-border);
  padding-block: var(--space-md);
}

details:first-child { border-top: 1px solid var(--c-border); }

summary {
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  padding: .25rem 0;
}

summary::-webkit-details-marker { display: none; }

summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--c-accent);
  flex-shrink: 0;
  transition: transform .2s;
}

details[open] summary::after {
  transform: rotate(45deg);
}

details p {
  padding-top: var(--space-sm);
  color: var(--c-text-muted);
  max-width: 100%;
}

/* ── Kontaktformular ──────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-group { display: flex; flex-direction: column; gap: .35rem; }
.form-group--full { grid-column: 1 / -1; }

label {
  font-size: .875rem;
  font-weight: 600;
  color: var(--c-text);
}

label .req { color: var(--c-danger); margin-left: 2px; }

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: .7rem .9rem;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .95rem;
  background: var(--c-bg);
  color: var(--c-text);
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--c-accent-lt);
}

textarea { min-height: 140px; resize: vertical; }

.form-group--checkbox {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: .65rem;
  grid-column: 1 / -1;
}

.form-group--checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: .15em;
  accent-color: var(--c-accent);
  cursor: pointer;
}

.form-group--checkbox label {
  font-weight: 400;
  font-size: .875rem;
  color: var(--c-text-muted);
  cursor: pointer;
}

.form-error  { color: var(--c-danger); font-size: .82rem; }
.form-notice { background: var(--c-accent-lt); border-left: 3px solid var(--c-accent); padding: var(--space-md); border-radius: var(--radius); margin-bottom: var(--space-lg); font-size: .9rem; }
.form-notice--error { background: #fef0ef; border-color: var(--c-danger); }

/* ── CTA-Banner ───────────────────────────────────────────── */
.cta-banner {
  text-align: center;
  padding-block: var(--space-2xl);
}

.cta-banner h2 { color: #fff; margin-bottom: var(--space-sm); }
.cta-banner p  { color: rgba(255,255,255,.75); margin-inline: auto; margin-bottom: var(--space-xl); }

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--c-text);
  color: rgba(255,255,255,.6);
  padding-block: var(--space-xl);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__logo {
  font-family: var(--font-display);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
}

.footer__links {
  display: flex;
  gap: var(--space-lg);
}

.footer__links a { color: rgba(255,255,255,.55); font-size: .85rem; text-decoration: none; }
.footer__links a:hover { color: #fff; }

.footer__copy { font-size: .8rem; width: 100%; padding-top: var(--space-md); border-top: 1px solid rgba(255,255,255,.1); text-align: center; }

/* ── Alerts ───────────────────────────────────────────────── */
.alert {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius);
  margin-bottom: var(--space-lg);
  font-size: .93rem;
}
.alert--success { background: #ecf9f5; border: 1px solid #a3d9c3; color: #1b5c43; }
.alert--error   { background: #fef2f1; border: 1px solid #f5a9a3; color: #8b1a12; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__links.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    padding: var(--space-lg);
    gap: var(--space-md);
  }
  .nav__toggle { display: block; }

  .hero__ctas { flex-direction: column; }
  .hero__trust { flex-direction: column; gap: var(--space-sm); }

  .card-grid { grid-template-columns: 1fr; }
  .direktkontakt-block { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .form-group--full { grid-column: 1; }

  .footer__inner { flex-direction: column; text-align: center; }
  .footer__links { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  .container { padding-inline: var(--space-md); }
  .rechner { padding: var(--space-lg); }
}

/* ── Legal-Seiten (Impressum, Datenschutz) ───────────────── */
.legal-content { max-width: 72ch; }
.legal-content h2 { font-size: 1.25rem; margin: 2.5rem 0 .65rem; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content h3 { font-size: 1rem; font-family: var(--font-body); font-weight: 600; margin: 1.5rem 0 .4rem; }
.legal-content p  { font-size: .92rem; color: var(--c-text); margin-bottom: .75rem; max-width: 100%; }
.legal-content ul { padding-left: 1.5rem; margin-bottom: 1rem; }
.legal-content ul li { font-size: .9rem; color: var(--c-text-muted); margin-bottom: .3rem; list-style: disc; }
.legal-content a  { color: var(--c-accent); }
.legal-content code { font-family: monospace; font-size: .85em; background: var(--c-accent-lt); padding: .1em .4em; border-radius: 3px; }

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

.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mt-xl  { margin-top: var(--space-xl); }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-lg  { margin-bottom: var(--space-lg); }
.mb-xl  { margin-bottom: var(--space-xl); }