/* ============================================
   hausbau.pro — Leadgen Website Styles
   ============================================ */

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

:root {
  --color-primary: #1e40af;
  --color-primary-dark: #1e3a8a;
  --color-accent: #f59e0b;
  --color-accent-dark: #d97706;
  --color-bg: #ffffff;
  --color-bg-gray: #f8fafc;
  --color-bg-dark: #0f172a;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-light-bg: #94a3b8;
  --color-border: #e2e8f0;
  --color-success: #22c55e;
  --color-white: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
  --shadow-hero: 0 20px 60px rgba(30,64,175,0.15);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --container: 1140px;
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
}

.section__title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  text-align: center;
  margin-bottom: 3rem;
  color: var(--color-text);
}

.section__title--light {
  color: var(--color-white);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

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

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn--header {
  background: var(--color-accent);
  color: var(--color-text);
  padding: 8px 18px;
  font-size: 0.9rem;
}

.btn--header:hover {
  background: var(--color-accent-dark);
  color: var(--color-text);
}

.btn--hero {
  background: var(--color-accent);
  color: var(--color-text);
  padding: 16px 32px;
  font-size: 1.05rem;
  font-weight: 700;
}

.btn--hero:hover {
  background: var(--color-accent-dark);
  color: var(--color-text);
  transform: translateY(-2px);
}

.btn--shadow {
  box-shadow: 0 4px 20px rgba(245,158,11,0.4);
}

.btn--form {
  background: var(--color-primary);
  color: var(--color-white);
  width: 100%;
  justify-content: center;
  padding: 16px 32px;
  font-size: 1.05rem;
}

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

/* ============================================
   Header
   ============================================ */
.header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
}

.logo-accent {
  color: var(--color-accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav__link {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ============================================
   Hero
   ============================================ */
.hero {
  background: linear-gradient(160deg, #eff6ff 0%, #ffffff 60%);
  padding: 80px 0 90px;
  overflow: hidden;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero__headline {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--color-text);
}

.text-accent {
  color: var(--color-primary);
}

.hero__sub {
  font-size: 1.15rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
  line-height: 1.7;
  max-width: 500px;
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-light);
}

.hero__trust span {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #166534;
}

/* Hero Card */
.hero__card {
  background: var(--color-bg-dark);
  border-radius: var(--radius-xl);
  padding: 36px;
  color: var(--color-white);
  box-shadow: var(--shadow-hero);
  position: relative;
}

.card-icon {
  width: 64px;
  height: 64px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.card-label {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-bottom: 16px;
  font-weight: 500;
}

.card-check {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: #475569;
  background: #1e293b;
  opacity: 0.5;
}

.card-check--active {
  opacity: 1;
  color: var(--color-white);
  background: #1e3a8a;
  border: 1px solid #3b82f6;
}

.card-badge {
  display: inline-block;
  margin-top: 20px;
  background: var(--color-accent);
  color: var(--color-text);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 6px 14px;
  border-radius: 100px;
}

/* ============================================
   Sections
   ============================================ */
.section {
  padding: 80px 0;
}

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

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

.section--form {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1e3a8a 100%);
}

/* ============================================
   Benefits
   ============================================ */
.benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.benefit {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.benefit:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.benefit__icon {
  width: 52px;
  height: 52px;
  background: #eff6ff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.benefit h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.benefit p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.65;
}

/* ============================================
   Steps
   ============================================ */
.steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin-bottom: 40px;
}

.step {
  flex: 1;
  text-align: center;
  padding: 0 20px;
}

.step__num {
  width: 56px;
  height: 56px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0 auto 16px;
}

.step h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.65;
}

.step-arrow {
  font-size: 1.8rem;
  color: var(--color-primary);
  font-weight: 800;
  padding-top: 14px;
  flex-shrink: 0;
}

.steps-cta {
  text-align: center;
}

/* ============================================
   Services
   ============================================ */
.services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.service-card {
  background: #1e293b;
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid #334155;
  transition: transform var(--transition), border-color var(--transition);
}

.service-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
}

.service-card__icon {
  width: 52px;
  height: 52px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1.1rem;
  color: var(--color-white);
  margin-bottom: 8px;
}

.service-card p {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.65;
  margin-bottom: 14px;
}

.service-card__tag {
  display: inline-block;
  background: rgba(59,130,246,0.15);
  color: #93c5fd;
  border-radius: 100px;
  padding: 4px 10px;
  font-size: 0.78rem;
  font-weight: 600;
}

.services-cta {
  text-align: center;
}

/* ============================================
   Reviews
   ============================================ */
.rating-summary {
  text-align: center;
  margin-bottom: 40px;
}

.stars {
  color: var(--color-accent);
  font-size: 1.6rem;
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.rating-score {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-right: 8px;
}

.rating-count {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.reviews {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.review__stars {
  color: var(--color-accent);
  font-size: 1rem;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.review p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 16px;
  font-style: italic;
}

.review__meta {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ============================================
   Lead Form
   ============================================ */
.form-wrapper {
  background: var(--color-bg);
  border-radius: var(--radius-xl);
  padding: 48px;
  max-width: 720px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
}

.form-header {
  text-align: center;
  margin-bottom: 32px;
}

.form-header h2 {
  font-size: 1.8rem;
  color: var(--color-text);
  margin-bottom: 10px;
}

.form-header p {
  color: var(--color-text-light);
  font-size: 1rem;
}

.form-trust {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.form-trust span {
  font-size: 0.88rem;
  font-weight: 600;
  color: #166534;
}

.lead-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group--full {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30,64,175,0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-light-bg);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-legal {
  font-size: 0.8rem;
  color: var(--color-text-light);
  text-align: center;
  line-height: 1.5;
}

.form-legal a {
  color: var(--color-primary);
}

.form-success {
  display: none;
  align-items: flex-start;
  gap: 12px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 8px;
  color: #166534;
  font-size: 0.95rem;
  line-height: 1.6;
}

.form-success.visible {
  display: flex;
}

/* ============================================
   FAQ
   ============================================ */
.faq {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  padding: 18px 22px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text);
  transition: background var(--transition);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item summary:hover {
  background: #f8fafc;
}

.faq-item p {
  padding: 0 22px 18px;
  font-size: 0.93rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: #0f172a;
  color: #94a3b8;
  padding-top: 60px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid #1e293b;
}

.footer__brand .logo {
  color: var(--color-white);
  font-size: 1.5rem;
  margin-bottom: 12px;
  display: inline-block;
}

.footer__brand p {
  font-size: 0.88rem;
  line-height: 1.6;
  color: #64748b;
  max-width: 260px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.footer__links a {
  font-size: 0.88rem;
  color: #64748b;
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--color-white);
}

.footer__bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 0.83rem;
  color: #475569;
}

/* ============================================
   Hero — Small Variant (Glossar, Blog)
   ============================================ */
.hero--small {
  padding: 48px 0 56px;
}

.hero--small .hero__content {
  max-width: 680px;
}

/* ============================================
   Card Variants
   ============================================ */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.card--link {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.card--link:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  color: inherit;
}

.card__tag {
  display: inline-block;
  background: #eff6ff;
  color: var(--color-primary);
  border-radius: 100px;
  padding: 4px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-top: 12px;
}

/* ============================================
   Sections
   ============================================ */
.section--light {
  background: var(--color-bg-gray);
}

/* ============================================
   Grid Layouts
   ============================================ */
.grid {
  display: grid;
  gap: 24px;
}

.grid--2 {
  grid-template-columns: 1fr 1fr;
}

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

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 900px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid--2 {
    grid-template-columns: 1fr;
  }

  .grid--3 {
    grid-template-columns: 1fr 1fr;
  }

  .grid--4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Cost Box
   ============================================ */
.cost-box {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 12px;
}

.cost-box p {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.65;
  margin: 0;
}

.cost-box strong {
  color: var(--color-primary);
}

/* ============================================
   Glossar Entry
   ============================================ */
.glossar-entry {
  margin-bottom: 0;
}

.glossar-entry h2 {
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
  color: var(--color-white);
  padding: 72px 0;
}

.cta-section h2 {
  color: var(--color-white);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 1rem;
}

.cta-section p {
  color: #bfdbfe;
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
}

.cta-content {
  max-width: 580px;
}

.section__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* ============================================
   Responsive Grid Helpers
   ============================================ */
@media (max-width: 900px) {
  .cta-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Mobile Navigation
   ============================================ */
@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    box-shadow: var(--shadow-md);
  }

  .nav.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .header__inner {
    position: relative;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__text {
    text-align: center;
  }

  .hero__sub {
    max-width: 100%;
  }

  .hero__trust {
    justify-content: center;
  }

  .hero {
    padding: 50px 0 60px;
  }

  .hero__headline {
    font-size: 1.9rem;
  }

  .benefits {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .services {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .reviews {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .steps {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .step-arrow {
    transform: rotate(90deg);
    padding: 8px 0;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .form-wrapper {
    padding: 28px 20px;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  .footer__inner {
    grid-template-columns: 1fr;
  }

  .hero__headline {
    font-size: 1.6rem;
  }

  .btn--hero {
    padding: 14px 24px;
    font-size: 1rem;
  }
}