/* === CSS Variables === */
:root {
  /* Colors (Mintgrün + Weiß + Dunkel) */
  --mint-light: #BBF7D0;
  --mint: #86EFAC;
  --mint-dark: #4ADE80;
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-300: #D1D5DB;
  --gray-600: #4B5563;
  --gray-800: #1F2937;
  --gray-900: #111827;

  /* Typography */
  --font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Border Radius */
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--gray-800);
  background-color: var(--white);
}

img {
  max-width: 100%;
  height: auto;
}

a {
  text-decoration: none;
  color: inherit;
}

/* === Container === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
}

.logo-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

/* Navigation - Desktop */
.nav {
  display: none;
  gap: var(--spacing-md);
}

.nav-link {
  color: var(--gray-600);
  font-weight: 600;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--mint-dark);
}

/* Hamburger Menu - Mobile */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.hamburger span {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--gray-800);
  border-radius: 2px;
  transition: all 0.3s;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Navigation */
.nav.active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--white);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-md);
}

/* === Hero Section === */
.hero {
  position: relative;
  background-image: url('../assets/images/hero_wide.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin-top: 60px; /* Header height */
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.2));
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--spacing-xl) var(--spacing-md);
}

.hero-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--white);
  margin: 0;
  max-width: 600px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  flex: 1;
  min-width: 300px;
}

.hero-cta-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
  max-width: 900px;
  margin: 0 auto;
}

.hero-cta {
  display: inline-block;
  background-color: var(--mint);
  color: var(--gray-900);
  font-weight: 700;
  font-size: 1.125rem;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: all 0.3s;
  flex-shrink: 0;
  white-space: nowrap;
}

.hero-cta:hover {
  background-color: var(--mint-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 20px -3px rgba(0, 0, 0, 0.15);
}

/* === Pricing Section === */
.pricing {
  padding: var(--spacing-2xl) 0;
  background-color: var(--gray-50);
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--gray-900);
}

.pricing-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  max-width: 1000px;
  margin: 0 auto;
}

/* === Card Component === */
.card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-featured {
  border: 2px solid var(--mint-dark);
}

.card-badge {
  position: absolute;
  top: -10px;
  right: var(--spacing-sm);
  background-color: var(--mint);
  color: var(--gray-900);
  font-weight: 700;
  font-size: 0.875rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card-header {
  background-color: var(--mint-light);
  padding: var(--spacing-md);
  text-align: center;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gray-900);
}

.card-body {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gray-900);
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.card-price-note {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-600);
}

.card-description {
  text-align: center;
  color: var(--gray-600);
  margin-bottom: var(--spacing-lg);
  min-height: 3rem;
}

.card-features {
  list-style: none;
  margin-bottom: var(--spacing-lg);
  flex: 1;
}

.card-features li {
  padding: var(--spacing-xs) 0;
  color: var(--gray-700);
}

/* === Buttons === */
.btn {
  display: block;
  width: 100%;
  text-align: center;
  font-weight: 700;
  padding: var(--spacing-md);
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  font-family: var(--font-family);
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--mint);
  color: var(--gray-900);
}

.btn-primary:hover {
  background-color: var(--mint-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background-color: var(--gray-100);
  color: var(--gray-700);
}

.btn-secondary:hover {
  background-color: var(--gray-300);
}

.btn-disabled {
  background-color: var(--gray-300);
  color: var(--gray-600);
  cursor: not-allowed;
}

.btn-disabled:hover {
  transform: none;
}

/* === How It Works Section === */
.how-it-works {
  padding: var(--spacing-2xl) 0;
  background-color: var(--white);
}

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  max-width: 900px;
  margin: 0 auto;
}

.step {
  text-align: center;
}

.step-number {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md);
  background-color: var(--mint);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gray-900);
}

.step-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.step-description {
  color: var(--gray-600);
  max-width: 300px;
  margin: 0 auto;
}

/* === Footer === */
.footer {
  background-color: var(--mint-light);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.footer-links a {
  color: var(--gray-800);
  font-weight: 600;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--gray-900);
}

.footer-separator {
  color: var(--gray-600);
}

.footer-copyright {
  color: var(--gray-600);
  font-size: 0.875rem;
}

/* === Responsive Breakpoints === */

/* Tablet (768px+) */
@media (min-width: 768px) {
  .hamburger {
    display: none;
  }

  .nav {
    display: flex;
  }

  .hero-title {
    font-size: 3rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

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

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

  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
  .container {
    padding: 0 var(--spacing-lg);
  }

  .hero {
    min-height: 80vh;
  }

  .hero-title {
    font-size: 3.5rem;
  }

  .section-title {
    font-size: 2.5rem;
  }
}