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

:root {
  --primary-color: #0066cc;
  --primary-dark: #0052a3;
  --secondary-color: #00a86b;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --success-color: #28a745;
  --text-dark: #1a1a1a;
  --text-gray: #666;
  --text-light: #999;
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-gray: #e9ecef;
  --border-color: #dee2e6;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--bg-white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.logo i {
  font-size: 1.75rem;
}

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

.nav a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s;
}

.nav a:hover,
.nav a.active {
  color: var(--primary-color);
}

.btn-premium {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white !important;
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 5rem 0;
  text-align: center;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 2px solid white;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.3);
}

.hero-features {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.feature-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.2);
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  font-weight: 500;
}

/* Tools Section */
.tools-section {
  padding: 5rem 0;
  background: var(--bg-light);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--text-dark);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.tool-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
}

.tool-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.tool-card.featured {
  border: 2px solid var(--primary-color);
}

.featured-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--primary-color);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
}

.tool-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.tool-icon i {
  font-size: 1.75rem;
  color: white;
}

.tool-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.tool-description {
  color: var(--text-gray);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.tool-features {
  list-style: none;
  margin-bottom: 1.5rem;
}

.tool-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-gray);
}

.tool-features i {
  color: var(--success-color);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

/* Why Section */
.why-section {
  padding: 5rem 0;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.why-card {
  text-align: center;
  padding: 2rem;
}

.why-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2rem;
}

.why-icon.danger {
  background: rgba(220, 53, 69, 0.1);
  color: var(--danger-color);
}

.why-icon.warning {
  background: rgba(255, 193, 7, 0.1);
  color: var(--warning-color);
}

.why-icon.success {
  background: rgba(40, 167, 69, 0.1);
  color: var(--success-color);
}

.why-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.why-card p {
  color: var(--text-gray);
  line-height: 1.7;
}

/* How It Works */
.how-section {
  padding: 5rem 0;
  background: var(--bg-light);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.step {
  text-align: center;
  padding: 2rem;
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1.5rem;
}

.step h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.step p {
  color: var(--text-gray);
  line-height: 1.7;
}

/* Premium Section */
.premium-section {
  padding: 5rem 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
}

.premium-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.premium-content > p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.premium-features {
  list-style: none;
  display: inline-block;
  text-align: left;
  margin-bottom: 2rem;
}

.premium-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 1.125rem;
}

.premium-features i {
  color: var(--success-color);
  background: white;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

.btn-premium-large {
  background: white;
  color: var(--primary-color);
  padding: 1rem 3rem;
  font-size: 1.125rem;
}

.btn-premium-large:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Footer */
.footer {
  background: var(--text-dark);
  color: white;
  padding: 4rem 0 1.5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1.5fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.footer-col h4 {
  margin-bottom: 1.25rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: white;
}

.footer-about p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.footer-slogan {
  font-style: italic;
  font-weight: 600;
  color: var(--primary-color) !important;
  font-size: 1.1rem;
  margin-top: 1.5rem !important;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-col ul li a:hover {
  color: white;
  padding-left: 5px;
}

.footer-col ul li a i {
  font-size: 0.9rem;
  color: var(--primary-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

/* Coffee Donation Button */
.btn-coffee {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
  color: white !important;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
}

.btn-coffee:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
  background: linear-gradient(135deg, #ff7b45 0%, #f8a32e 100%);
}

.btn-coffee i {
  font-size: 1.1rem;
  animation: steam 2s ease-in-out infinite;
}

@keyframes steam {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-3px);
  }
}

.btn-coffee span {
  font-weight: 600;
}

/* Modal/Popup styling for Impressum and Datenschutz */
.modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(5px);
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal-content {
  background-color: white;
  margin: 3% auto;
  padding: 0;
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 800px;
  max-height: 85vh;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  animation: slideDown 0.3s ease;
  position: relative;
}

@keyframes slideDown {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-content h2 {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  padding: 1.5rem 2rem;
  margin: 0;
  font-size: 1.75rem;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-body {
  padding: 2rem;
  max-height: calc(85vh - 100px);
  overflow-y: auto;
  color: var(--text-dark);
}

.modal-body h3 {
  color: var(--primary-color);
  margin-top: 1.5rem;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.modal-body h4 {
  color: var(--text-dark);
  margin-top: 1rem;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.modal-body p {
  line-height: 1.8;
  margin-bottom: 1rem;
  color: var(--text-gray);
}

.modal-close {
  color: white;
  position: absolute;
  right: 1.5rem;
  top: 1.5rem;
  font-size: 2rem;
  font-weight: 300;
  cursor: pointer;
  transition: all 0.3s;
  z-index: 1;
  width: 35px;
  height: 35px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: rotate(90deg);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2rem;
  }

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

  .nav {
    gap: 1rem;
  }

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

  /* Responsive adjustments for coffee button */
  .btn-coffee span {
    display: none;
  }

  .btn-coffee {
    padding: 0.5rem 0.75rem;
  }

  /* Responsive footer for mobile */
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .modal-content {
    width: 95%;
    margin: 5% auto;
    max-height: 90vh;
  }

  .modal-content h2 {
    font-size: 1.5rem;
    padding: 1.25rem 1.5rem;
  }

  .modal-body {
    padding: 1.5rem;
  }
}