/* ============================================
   Rundum-Fassaden.de - Design System CSS
   ============================================ */

/* Lokale Fonts einbinden */
@import url('fonts.css');

/* CSS Variables - Design Tokens */
:root {
  /* Colors */
  --color-bg: #F7EFEA;
  --color-surface: #FFFFFF;
  --color-surface-muted: #FAF5F1;
  --color-border: #E9DDD7;
  --color-text: #1E1411;
  --color-text-muted: #5C4A44;
  --color-text-subtle: #8A7771;
  --color-primary: #4A231D;
  --color-primary-pressed: #371813;
  --color-primary-on: #FFFFFF;
  --color-focus-ring: rgba(154, 128, 116, 0.35);
  --color-success: #2E7D32;
  --color-warning: #C07A14;
  --color-danger: #B3261E;
  
  /* Radius */
  --radius-card: 16px;
  --radius-input: 16px;
  --radius-pill: 999px;
  --radius-xs: 8px;
  --radius-s: 12px;
  --radius-m: 16px;
  --radius-l: 20px;
  --radius-xl: 28px;
  
  /* Shadows */
  --shadow-sm: 0 6px 18px rgba(30, 20, 17, 0.08);
  --shadow-md: 0 10px 28px rgba(30, 20, 17, 0.10);
  --shadow-lg: 0 18px 40px rgba(30, 20, 17, 0.14);
  
  /* Spacing */
  --spacing-0: 0;
  --spacing-1: 4px;
  --spacing-2: 8px;
  --spacing-3: 12px;
  --spacing-4: 16px;
  --spacing-5: 20px;
  --spacing-6: 24px;
  --spacing-7: 28px;
  --spacing-8: 32px;
  --spacing-10: 40px;
  --spacing-12: 48px;
  
  /* Typography */
  --font-ui: Inter, SF Pro Text, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  --font-display: Inter, SF Pro Display, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  
  /* Layout */
  --max-width: 1120px;
  --page-padding: 16px;
  --section-gap: 24px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 22px;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Scale */
.display-l {
  font-size: 28px;
  line-height: 34px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.display-m {
  font-size: 24px;
  line-height: 30px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

h1 {
  font-size: 20px;
  line-height: 26px;
  font-weight: 700;
  letter-spacing: -0.1px;
}

h2 {
  font-size: 18px;
  line-height: 24px;
  font-weight: 700;
  letter-spacing: -0.1px;
}

h3 {
  font-size: 16px;
  line-height: 22px;
  font-weight: 600;
}

.body-l {
  font-size: 16px;
  line-height: 22px;
  font-weight: 500;
}

.body-m {
  font-size: 14px;
  line-height: 20px;
  font-weight: 500;
}

.body-s {
  font-size: 12px;
  line-height: 16px;
  font-weight: 500;
  letter-spacing: 0.1px;
}

.caption {
  font-size: 11px;
  line-height: 14px;
  font-weight: 500;
  letter-spacing: 0.2px;
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover:not(.btn) {
  color: var(--color-primary-pressed);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-pill);
  font-family: var(--font-ui);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
  text-decoration: none;
  min-height: 44px;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 4px var(--color-focus-ring);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-primary-on);
  padding: 12px 20px;
  font-size: 16px;
  line-height: 22px;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-pressed);
  color: var(--color-primary-on);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(1px);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 12px 18px;
  font-size: 14px;
  line-height: 20px;
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-surface-muted);
}

.btn-lg {
  min-height: 52px;
  padding: 14px 24px;
  font-size: 16px;
  line-height: 22px;
}

.btn-sm {
  min-height: 36px;
  padding: 8px 14px;
  font-size: 12px;
  line-height: 16px;
}

/* Form Elements */
.form-group {
  margin-bottom: var(--spacing-4);
}

label {
  display: block;
  font-size: 11px;
  line-height: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-2);
  letter-spacing: 0.2px;
}

label .info-toggle {
  display: inline-flex;
  vertical-align: middle;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
  width: 100%;
  height: 48px;
  padding: 12px 14px;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 20px;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  transition: all 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-focus-ring);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-subtle);
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%238A7771' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* Cards */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--spacing-4);
  box-shadow: var(--shadow-sm);
}

/* Container & Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

.section {
  padding: var(--spacing-8) 0;
}

.section-title {
  margin-bottom: var(--spacing-6);
}

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

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) var(--page-padding);
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.1px;
}

.nav {
  display: none;
  gap: var(--spacing-4);
  align-items: center;
}

.nav-link {
  font-size: 14px;
  color: var(--color-text-muted);
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--radius-s);
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: var(--color-text);
  background-color: var(--color-surface-muted);
}

.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-2);
  min-height: 44px;
  min-width: 44px;
  justify-content: center;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: all 0.2s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: var(--spacing-4);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.mobile-nav.active {
  display: flex;
}

.mobile-nav .nav-link {
  padding: var(--spacing-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav .nav-link:last-child {
  border-bottom: none;
}

/* Hero Section */
.hero {
  padding: var(--spacing-10) var(--page-padding) var(--spacing-12);
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface-muted) 100%);
}

.hero h1 {
  font-size: 28px;
  line-height: 34px;
  font-weight: 700;
  margin-bottom: var(--spacing-4);
  letter-spacing: -0.2px;
}

.hero-subtitle {
  font-size: 16px;
  line-height: 22px;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-form {
  max-width: 600px;
  margin: 0 auto var(--spacing-6);
  background-color: var(--color-surface);
  padding: var(--spacing-6);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.hero-form-grid {
  display: grid;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-4);
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
  justify-content: center;
  margin-top: var(--spacing-6);
  font-size: 12px;
  color: var(--color-text-muted);
}

/* Hero mit Hintergrundbild - nur für Startseite */
.hero-home {
  position: relative;
  background-image: url('../images/fassadenarbeiten-hero-hintergrundbild.jpeg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

/* Overlay für bessere Lesbarkeit des Textes über dem Hintergrundbild */
.hero-home::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    180deg,
    rgba(30, 20, 17, 0.4) 0%,
    rgba(30, 20, 17, 0.5) 50%,
    rgba(30, 20, 17, 0.6) 100%
  );
  z-index: 0;
}

/* Container und Inhalte über dem Overlay positionieren */
.hero-home > .container {
  position: relative;
  z-index: 1;
}

/* Textfarben für Hero mit Hintergrundbild */
.hero-home h1 {
  color: #FFFFFF;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-home .hero-subtitle {
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.hero-home .trust-badges {
  color: rgba(255, 255, 255, 0.9);
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.trust-badge::before {
  content: "✓";
  color: var(--color-success);
  font-weight: 700;
}

/* Steps Section */
.steps {
  background-color: var(--color-surface);
  padding: var(--spacing-8) var(--page-padding);
}

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-6);
  margin-top: var(--spacing-6);
}

.step-card {
  text-align: center;
  padding: var(--spacing-6);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
  color: var(--color-primary-on);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--spacing-4);
}

.step-card h3 {
  margin-bottom: var(--spacing-2);
}

.step-card p {
  font-size: 14px;
  color: var(--color-text-muted);
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-4);
  margin-top: var(--spacing-6);
}

.service-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

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

.service-card h3 {
  margin-bottom: var(--spacing-2);
}

.service-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-4);
}

.service-card .btn {
  width: 100%;
}

/* Benefits Section */
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
  margin-top: var(--spacing-6);
}

.benefit-item {
  display: flex;
  gap: var(--spacing-4);
  padding: var(--spacing-4);
  background-color: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
}

.benefit-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface-muted);
  border-radius: var(--radius-pill);
  color: var(--color-primary);
  font-size: 20px;
}

.benefit-content h3 {
  margin-bottom: var(--spacing-1);
}

.benefit-content p {
  font-size: 14px;
  color: var(--color-text-muted);
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
  margin-top: var(--spacing-6);
}

.testimonial-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-sm);
}

.testimonial-rating {
  display: flex;
  gap: 4px;
  margin-bottom: var(--spacing-3);
  color: var(--color-warning);
  font-size: 16px;
}

.testimonial-text {
  font-size: 14px;
  line-height: 20px;
  color: var(--color-text);
  margin-bottom: var(--spacing-4);
  font-style: italic;
}

.testimonial-author {
  font-size: 12px;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* Regions */
.regions-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-3);
  margin-top: var(--spacing-4);
}

.region-link {
  display: inline-block;
  padding: var(--spacing-2) var(--spacing-4);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 14px;
  color: var(--color-text-muted);
  transition: all 0.2s ease;
}

.region-link:hover {
  background-color: var(--color-primary);
  color: var(--color-primary-on);
  border-color: var(--color-primary);
}

/* Article Teaser */
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
  margin-top: var(--spacing-6);
}

.article-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

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

.article-card h3 {
  margin-bottom: var(--spacing-2);
}

.article-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-4);
}

/* FAQ */
.faq-list {
  margin-top: var(--spacing-6);
}

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  margin-bottom: var(--spacing-3);
  overflow: hidden;
}

.faq-question {
  padding: var(--spacing-4);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s ease;
}

.faq-question:hover {
  background-color: var(--color-surface-muted);
}

.faq-question::after {
  content: "+";
  font-size: 20px;
  color: var(--color-text-muted);
  transition: transform 0.2s ease;
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  padding: 0 var(--spacing-4) var(--spacing-4);
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 20px;
}

/* Final CTA */
.final-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-pressed) 100%);
  color: var(--color-primary-on);
  padding: var(--spacing-10) var(--page-padding);
  text-align: center;
  border-radius: var(--radius-l);
  margin: var(--spacing-8) var(--page-padding);
}

.final-cta h2 {
  color: var(--color-primary-on);
  margin-bottom: var(--spacing-4);
}

.final-cta p {
  font-size: 16px;
  margin-bottom: var(--spacing-6);
  opacity: 0.9;
}

.final-cta .btn {
  background-color: var(--color-primary-on);
  color: var(--color-primary);
}

.final-cta .btn:hover {
  background-color: var(--color-surface-muted);
}

/* Footer */
.footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-8) var(--page-padding);
  margin-top: var(--spacing-10);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-6);
}

.footer-column h3 {
  font-size: 14px;
  margin-bottom: var(--spacing-3);
  color: var(--color-text);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-2);
}

.footer-links a {
  font-size: 14px;
  color: var(--color-text-muted);
}

.footer-links a:hover {
  color: var(--color-text);
}

.footer-bottom {
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 12px;
  color: var(--color-text-muted);
}

.footer-bottom a {
  color: var(--color-text-muted);
  text-decoration: underline;
}

/* Responsive Design */
@media (min-width: 640px) {
  .hero h1 {
    font-size: 32px;
    line-height: 38px;
  }
  
  .hero-form-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  :root {
    --page-padding: 24px;
    --section-gap: 32px;
  }
  
  .nav {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: none;
  }
  
  .mobile-nav {
    display: none !important;
  }
  
  .hero {
    padding: var(--spacing-12) var(--page-padding);
  }
  
  .hero h1 {
    font-size: 40px;
    line-height: 48px;
  }
  
  .hero-subtitle {
    font-size: 18px;
  }
  
  .section {
    padding: var(--spacing-10) 0;
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .hero h1 {
    font-size: 48px;
    line-height: 56px;
  }
  
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Info Icon Styles */
.info-icon-wrapper {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  position: relative;
}

.info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-surface-muted);
  border: 1.5px solid var(--color-text-subtle);
  color: var(--color-text-subtle);
  font-size: 11px;
  font-weight: 600;
  cursor: help;
  flex-shrink: 0;
  transition: all 0.2s ease;
  position: relative;
}

.info-icon:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-on);
}

.info-tooltip {
  position: absolute;
  bottom: calc(100% + var(--spacing-2));
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-text);
  color: var(--color-primary-on);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-s);
  font-size: 12px;
  line-height: 16px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 1000;
  max-width: 250px;
  white-space: normal;
  box-shadow: var(--shadow-md);
}

.info-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--color-text);
}

.info-icon:hover .info-tooltip,
.info-icon-wrapper:hover .info-tooltip {
  opacity: 1;
}

.info-content {
  display: none;
  margin-top: var(--spacing-3);
  padding: var(--spacing-4);
  background-color: var(--color-surface-muted);
  border-radius: var(--radius-s);
  font-size: 13px;
  line-height: 18px;
  color: var(--color-text-muted);
  animation: fadeIn 0.2s ease;
}

.info-content.active {
  display: block;
}

.info-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  cursor: pointer;
  user-select: none;
  vertical-align: middle;
  margin-left: var(--spacing-1);
}

.info-toggle .info-icon {
  cursor: pointer;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Form Field with Info */
.form-field-with-info {
  position: relative;
}

.form-field-with-info label {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

/* Optional Field Indicator */
.optional-badge {
  display: inline-block;
  font-size: 10px;
  color: var(--color-text-subtle);
  font-weight: 500;
  margin-left: var(--spacing-1);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-2 {
  margin-top: var(--spacing-2);
}

.mt-4 {
  margin-top: var(--spacing-4);
}

.mb-2 {
  margin-bottom: var(--spacing-2);
}

.mb-4 {
  margin-bottom: var(--spacing-4);
}