/* 
  Kalle's Fahrschule - Modernized Design System
  Colors based on exactly original website branding:
  Primary: #9E1117 (Deep Red)
  Secondary: #000000 (Black)
  Tertiary: #BEBDC2 (Light Grey)
*/

:root {
  /* Brand Colors */
  --c-primary: #9E1117;
  --c-primary-light: #b9151c;
  --c-black: #000000;
  --c-grey-light: #BEBDC2;
  --c-grey-dark: #666666;
  --c-white: #ffffff;
  --c-bg-light: #f7f7f9;

  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Layout */
  --container-width: 1200px;
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  /* Shadows */
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  color: var(--c-grey-dark);
  background-color: var(--c-white);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--c-black);
  line-height: 1.2;
}

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

ul {
  list-style: none;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
}

.mt-2 {
  margin-top: 1rem;
}

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

.bg-light {
  background-color: var(--c-bg-light);
}

/* Typography */
h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.lead {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--c-black);
  margin-bottom: 1.5rem;
}

.highlight {
  color: var(--c-primary);
}

.badge {
  display: inline-block;
  background: rgba(158, 17, 23, 0.1);
  color: var(--c-primary);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.subheading {
  display: block;
  font-family: var(--font-heading);
  color: var(--c-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-family: var(--font-heading);
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--c-primary);
  color: var(--c-white);
  box-shadow: 0 4px 15px rgba(158, 17, 23, 0.3);
}

.btn-primary:hover {
  background-color: var(--c-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(158, 17, 23, 0.4);
}

.btn-secondary {
  background-color: var(--c-white);
  color: var(--c-black);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--c-bg-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

/* Top Bar */
.top-bar {
  background-color: var(--c-grey-light);
  color: var(--c-black);
  font-size: 0.875rem;
  padding: 0.5rem 0;
  font-weight: 500;
}

.top-bar-content {
  display: flex;
  justify-content: flex-end;
  gap: 2rem;
  flex-wrap: wrap;
}

.top-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.top-link:hover {
  color: var(--c-primary);
}

/* Navbar */
.navbar {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--c-black);
  white-space: nowrap;
  margin-left: -3rem; /* Pushes the logo further to the left */
  margin-right: auto; /* Pushes the navigation links away */
  padding-right: 3rem; /* Extra breathing space between logo and text */
}

.logo img {
  height: 60px;
  width: auto;
  transition: var(--transition);
}

/* Fallback when logo image fails to load */
.logo img[data-failed] {
  display: none;
}

.logo .logo-fallback {
  display: none;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--c-primary);
  letter-spacing: -0.5px;
}

.logo img[data-failed] + .logo-fallback {
  display: inline;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--c-black);
  font-size: 0.95rem;
  position: relative;
}

.nav-links a:not(.btn-nav)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--c-primary);
  transition: var(--transition);
}

.nav-links a:hover:not(.btn-nav)::after,
.nav-links a.active:not(.btn-nav)::after {
  width: 100%;
}

.nav-links a.btn-nav {
  padding: 0.6rem 1.5rem;
  background-color: var(--c-primary);
  color: var(--c-white);
  border-radius: 50px;
}

.nav-links a.btn-nav:hover {
  background-color: var(--c-primary-light);
  transform: translateY(-2px);
}

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

.hamburger {
  width: 24px;
  height: 2px;
  background-color: var(--c-black);
  position: relative;
  transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: var(--c-black);
  transition: var(--transition);
  left: 0;
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  top: 8px;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #111;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(rgba(0, 0, 0, 0.15), rgba(0, 0, 0, 0.5)), url('assets/images/hero.jpeg');
  background-size: cover;
  background-position: center 15%;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-text {
  max-width: 600px;
  color: var(--c-white);
}

.hero-text h1 {
  color: var(--c-white);
}

.hero-text p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-actions {
  display: flex;
  gap: 1rem;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.features-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  position: relative;
}

.glass-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  transition: var(--transition);
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(158, 17, 23, 0.2);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: rgba(158, 17, 23, 0.1);
  color: var(--c-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

/* Services Section */
.section-header .divider {
  height: 4px;
  width: 60px;
  background-color: var(--c-primary);
  margin: 1rem auto;
  border-radius: 2px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.service-card {
  background-color: var(--c-white);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.03);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--c-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  color: var(--c-primary);
  margin-bottom: 1.5rem;
}

.service-content h3 {
  margin-bottom: 1rem;
}

.service-content p {
  color: var(--c-grey-dark);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--c-black);
  font-family: var(--font-heading);
  font-weight: 600;
}

.service-link:hover {
  color: var(--c-primary);
  gap: 0.8rem;
}

/* Special Support Section */
.special-support-section {
  background-color: var(--c-primary);
  color: var(--c-white);
  position: relative;
  overflow: hidden;
}

.special-support-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
  border-radius: 50%;
}

.container-special {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.special-support-section h2 {
  color: var(--c-white);
  margin-bottom: 0.5rem;
}

.lead-light {
  font-size: 1.25rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
}

.badge-light {
  background: rgba(255, 255, 255, 0.2);
  color: var(--c-white);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.divider-light {
  height: 4px;
  width: 60px;
  background-color: var(--c-white);
  margin: 1.5rem 0;
  border-radius: 2px;
}

.special-text p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 1rem;
}

.special-text strong {
  color: var(--c-white);
}

.special-list {
  margin-top: 1.5rem;
  margin-bottom: 2.5rem;
}

.special-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
}

.special-list li svg {
  color: var(--c-white);
  flex-shrink: 0;
  margin-top: 2px;
}

.glass-card-dark {
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-lg);
  padding: 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  aspect-ratio: 1;
  max-width: 400px;
  margin: 0 auto;
}

.glass-card-dark svg {
  color: var(--c-white);
  margin-bottom: 1.5rem;
  opacity: 0.9;
}

.glass-card-dark p {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--c-white);
}

/* Reviews Section */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.review-card {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.reviewer-avatar {
  width: 50px;
  height: 50px;
  background-color: var(--c-primary);
  color: var(--c-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-family: var(--font-heading);
  font-size: 1.1rem;
}

.reviewer-info {
  flex-grow: 1;
}

.reviewer-info h4 {
  margin: 0;
  font-size: 1.1rem;
}

.stars {
  color: #fbbc04;
  /* Google yellow star color */
  font-size: 1.2rem;
  letter-spacing: 2px;
}

.google-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.review-text {
  font-style: italic;
  color: var(--c-grey-dark);
}

/* Schedule / Table Section */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin-top: 3rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background-color: var(--c-white);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.schedule-table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  text-align: left;
}

.schedule-table th,
.schedule-table td {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.schedule-table th {
  background-color: var(--c-primary);
  color: var(--c-white);
  font-family: var(--font-heading);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 1px;
}

.schedule-table tbody tr {
  transition: var(--transition);
}

.schedule-table tbody tr:hover {
  background-color: rgba(158, 17, 23, 0.05);
}

.schedule-table tbody tr:last-child td {
  border-bottom: none;
}

.schedule-table td:first-child {
  font-weight: 600;
  color: var(--c-black);
}

/* Instagram Section */
.instagram-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.insta-post {
  display: block;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1;
  box-shadow: var(--shadow-sm);
}

.insta-post img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.insta-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(158, 17, 23, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  color: var(--c-white);
}

.insta-post:hover img {
  transform: scale(1.1);
}

.insta-post:hover .insta-overlay {
  opacity: 1;
}

.text-muted {
  color: rgba(0, 0, 0, 0.5);
}

/* Call to Action Section */
.cta-section {
  background-color: var(--c-primary);
  color: var(--c-white);
  padding: 6rem 0;
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(circle at right top, rgba(255, 255, 255, 0.1) 0%, transparent 40%);
}

.cta-section h2 {
  color: var(--c-white);
}

.phone-number {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  margin: 1.5rem 0;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  color: var(--c-white);
}

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

.cta-section .btn:hover {
  background-color: var(--c-bg-light);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* Footer */
.footer {
  background-color: var(--c-black);
  color: rgba(255, 255, 255, 0.7);
  padding: 5rem 0 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-logo img {
  height: 60px;
}

.footer-logo img[data-failed] {
  display: none;
}

.footer-logo .logo-fallback {
  display: none;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--c-white);
}

.footer-logo img[data-failed] + .logo-fallback {
  display: inline;
}

.footer h4 {
  color: var(--c-white);
  margin-bottom: 1.5rem;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a:hover {
  color: var(--c-primary);
  padding-left: 5px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.5rem 0;
  font-size: 0.875rem;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.legal-links {
  display: flex;
  gap: 1.5rem;
}

.legal-links a:hover {
  color: var(--c-white);
}

/* Animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.visible {
  opacity: 1;
  transform: translate(0);
}

/* Responsive */
@media (max-width: 992px) {

  .about-grid,
  .container-special {
    grid-template-columns: 1fr;
  }

  .glass-card-dark {
    aspect-ratio: auto;
    padding: 3rem;
  }

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

@media (max-width: 768px) {
  .top-bar-content {
    justify-content: center;
  }

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

  .nav-links {
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--c-white);
    flex-direction: column;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: clip-path 0.4s ease-in-out;
    gap: 1.5rem;
  }

  .nav-links.active {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }

  .hero-actions {
    flex-direction: column;
  }

  .flex-between {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .top-bar-content {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }

  .hero-text h1 {
    font-size: 1.75rem;
  }

  .phone-number {
    font-size: 1.75rem;
  }

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

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

/* 404 Error Page */
.error-page-section {
  min-height: calc(100vh - 80px - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 0;
}

.error-page-content h1 {
  font-size: clamp(4rem, 10vw, 8rem);
  color: var(--c-primary);
  line-height: 1;
  margin-bottom: 1rem;
}

.error-page-content h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--c-black);
  margin-bottom: 1.5rem;
}

.error-page-content p {
  font-size: 1.25rem;
  color: var(--c-grey-dark);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.error-slogan {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--c-black);
  margin-bottom: 3rem;
  padding: 1.5rem 2rem;
  background-color: var(--c-bg-light);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--c-primary);
  display: inline-block;
}

/* PDF Viewer - Theorieplan */
.pdf-viewer-wrapper {
  margin-top: 3rem;
}

.pdf-container {
  position: relative;
  width: 100%;
  background-color: transparent;
}

.pdf-canvas {
  display: none;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.pdf-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 4rem 2rem;
  color: var(--c-grey-dark);
  font-size: 0.95rem;
}

.pdf-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(158, 17, 23, 0.15);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.pdf-fallback {
  padding: 4rem 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--c-grey-dark);
}