/* ============================================
   Ingenieurbüro Martin Joost - Modern Website
   ============================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: #334155;
  background-color: #ffffff;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: all 0.3s ease;
  padding: 1rem 0;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  color: #ffffff;
  text-decoration: none;
  transition: color 0.3s ease;
}

.navbar.scrolled .logo {
  color: #0f172a;
}

.nav-links {
  display: flex;
  gap: 0.5rem;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 0.5rem 1rem;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  border-radius: 0.375rem;
  transition: all 0.2s ease;
}

.nav-links a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
}

.navbar.scrolled .nav-links a {
  color: #64748b;
}

.navbar.scrolled .nav-links a:hover {
  color: #0f172a;
  background: #f1f5f9;
}

.nav-links a.active {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.navbar.scrolled .nav-links a.active {
  background: #0f172a;
  color: #ffffff;
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: #ffffff;
  margin: 5px 0;
  transition: all 0.3s ease;
}

.navbar.scrolled .mobile-menu-btn span {
  background: #0f172a;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1474487548417-781cb71495f3?w=1920&q=80');
  background-size: cover;
  background-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.7), rgba(15, 23, 42, 0.5), rgba(15, 23, 42, 0.8));
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem;
  max-width: 900px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-title span {
  color: #60a5fa;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: #e2e8f0;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: #2563eb;
  color: #ffffff;
}

.btn-primary:hover {
  background: #1d4ed8;
}

.btn-outline {
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-indicator-inner {
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.scroll-indicator-inner::after {
  content: '';
  width: 4px;
  height: 8px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 2px;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* ============================================
   Sections
   ============================================ */
.section {
  padding: 5rem 1.5rem;
}

.section-white {
  background: #ffffff;
}

.section-gray {
  background: #f8fafc;
}

.section-dark {
  background: #0f172a;
  color: #ffffff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 1rem;
}

.section-dark .section-title {
  color: #ffffff;
}

.section-subtitle {
  font-size: 1.125rem;
  color: #64748b;
}

.section-dark .section-subtitle {
  color: #94a3b8;
}

/* ============================================
   About Section
   ============================================ */
.about-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  font-size: 1.125rem;
  color: #475569;
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

/* ============================================
   Services Grid
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: #ffffff;
  padding: 2rem;
  border-radius: 0.75rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.service-card:hover {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service-icon {
  width: 56px;
  height: 56px;
  background: #dbeafe;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  transition: all 0.3s ease;
}

.service-card:hover .service-icon {
  background: #2563eb;
}

.service-icon svg {
  width: 28px;
  height: 28px;
  color: #2563eb;
  transition: all 0.3s ease;
}

.service-card:hover .service-icon svg {
  color: #ffffff;
}

.service-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 0.75rem;
}

.service-description {
  color: #64748b;
  line-height: 1.6;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  text-align: center;
}

.cta-title {
  font-size: 2rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
}

.cta-text {
  font-size: 1.125rem;
  color: #94a3b8;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 4rem 1.5rem 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto 3rem;
}

.footer-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 1rem;
}

.footer-text {
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-contact {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  color: #64748b;
  flex-shrink: 0;
}

.footer-contact a {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-contact a:hover {
  color: #ffffff;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid #1e293b;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copyright {
  font-size: 0.875rem;
}

.footer-legal {
  display: flex;
  gap: 1rem;
}

.footer-legal a {
  color: #64748b;
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.footer-legal a:hover {
  color: #94a3b8;
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
  background: #0f172a;
  padding: 8rem 1.5rem 4rem;
  text-align: center;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.page-subtitle {
  font-size: 1.125rem;
  color: #94a3b8;
}

/* ============================================
   Content Cards
   ============================================ */
.content-card {
  background: #ffffff;
  border-radius: 0.5rem;
  padding: 1.5rem 2rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.content-card h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 1rem;
}

.content-card p {
  color: #475569;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.content-card p:last-child {
  margin-bottom: 0;
}

.content-card ul {
  list-style: disc;
  padding-left: 1.5rem;
  color: #475569;
  line-height: 1.7;
}

.content-card li {
  margin-bottom: 0.5rem;
}

.content-card a {
  color: #2563eb;
  text-decoration: none;
}

.content-card a:hover {
  text-decoration: underline;
}

/* ============================================
   Contact Page
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

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

.contact-form {
  background: #ffffff;
  padding: 2rem;
  border-radius: 0.75rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: #374151;
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #d1d5db;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 1rem;
}

.contact-info-card {
  background: #ffffff;
  padding: 2rem;
  border-radius: 0.75rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  margin-bottom: 1.5rem;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.contact-info-item:last-child {
  margin-bottom: 0;
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  background: #dbeafe;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-icon svg {
  width: 20px;
  height: 20px;
  color: #2563eb;
}

.contact-info-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 0.25rem;
}

.contact-info-content p,
.contact-info-content a {
  font-size: 0.875rem;
  color: #475569;
  line-height: 1.5;
}

.contact-info-content a {
  text-decoration: none;
  transition: color 0.2s ease;
}

.contact-info-content a:hover {
  color: #2563eb;
}

.map-container {
  background: #ffffff;
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.map-container iframe {
  width: 100%;
  height: 300px;
  border: none;
}

/* ============================================
   Modal
   ============================================ */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: #ffffff;
  border-radius: 0.75rem;
  padding: 2rem;
  max-width: 400px;
  width: 100%;
  text-align: center;
}

.modal-icon {
  width: 48px;
  height: 48px;
  background: #dcfce7;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.modal-icon svg {
  width: 24px;
  height: 24px;
  color: #16a34a;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 0.5rem;
}

.modal-text {
  color: #64748b;
  margin-bottom: 1.5rem;
}

.modal-close {
  background: #2563eb;
  color: #ffffff;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease;
}

.modal-close:hover {
  background: #1d4ed8;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    padding: 1rem;
    gap: 0.25rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }

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

  .nav-links a {
    color: #475569;
    padding: 0.75rem 1rem;
  }

  .nav-links a:hover {
    background: #f1f5f9;
    color: #0f172a;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

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