/* ===========================
   Energie Hellmann - Design System
   =========================== */

/* Local Fonts (Datenschutzkonform) */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/inter-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/inter-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/inter-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/inter-latin-700-normal.woff2') format('woff2');
}

/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #2D5A3D;
  --color-primary-light: #3D7A4D;
  --color-primary-dark: #1E3D29;
  --color-secondary: #333333;
  --color-accent: #F5F5F0;
  --color-white: #FFFFFF;
  --color-gray-100: #F8F9FA;
  --color-gray-200: #E9ECEF;
  --color-gray-300: #DEE2E6;
  --color-gray-600: #6C757D;
  --color-gray-800: #495057;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;
  --font-size-4xl: 40px;
  --font-size-5xl: 48px;
  --line-height: 1.6;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Layout */
  --max-width: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 16px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

a:hover {
  color: var(--color-primary-light);
}

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-secondary);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
  margin-bottom: var(--spacing-sm);
}

/* Layout Components */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section--gray {
  background-color: var(--color-gray-100);
}

.section--accent {
  background-color: var(--color-accent);
}

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

.section--primary h2,
.section--primary h3 {
  color: var(--color-white);
}

/* Header / Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo__image {
  height: 50px;
  width: auto;
}

.logo__text {
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-secondary);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav__link {
  font-weight: 500;
  color: var(--color-secondary);
  position: relative;
  padding: var(--spacing-xs) 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.nav__toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--color-secondary);
  border-radius: 2px;
  transition: var(--transition-base);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

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

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

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

.btn--large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-white) 100%);
  overflow: hidden;
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.hero__content {
  z-index: 1;
}

.hero__badge {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 50px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--spacing-md);
  color: var(--color-secondary);
}

.hero__title span {
  color: var(--color-primary);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-lg);
  max-width: 500px;
}

.hero__cta {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.hero__image {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.hero__image img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* Trust Bar */
.trust-bar {
  background-color: var(--color-white);
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--color-gray-200);
  border-bottom: 1px solid var(--color-gray-200);
}

.trust-bar__container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.trust-bar__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-gray-600);
  font-weight: 500;
}

.trust-bar__item svg {
  color: var(--color-primary);
}

/* Feature Cards */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.feature-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.feature-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.feature-card__text {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
}

/* Process Steps */
.process {
  counter-reset: step;
}

.process__steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.process__step {
  position: relative;
  padding: var(--spacing-lg);
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.process__step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-lg);
}

.process__step-content {
  padding-left: 50px;
}

.process__step-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.process__step-text {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
}

/* Price Box */
.price-box {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  max-width: 500px;
}

.price-box__header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: var(--spacing-lg);
  text-align: center;
}

.price-box__title {
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
}

.price-box__body {
  padding: var(--spacing-lg);
}

.price-box__row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.price-box__row:last-child {
  border-bottom: none;
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-primary);
}

.price-box__row--discount {
  color: var(--color-primary);
}

.price-box__footer {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

/* Profile Section */
.profile {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--spacing-2xl);
  align-items: start;
}

.profile__image {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.profile__image img {
  width: 100%;
  height: auto;
}

.profile__content h2 {
  margin-bottom: var(--spacing-md);
}

.profile__qualifications {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) 0;
}

.profile__qualification {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: var(--color-gray-100);
  border-radius: var(--border-radius);
}

.profile__qualification-icon {
  font-size: 24px;
}

/* Contact Form */
.contact-form {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--color-secondary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.form-checkbox input {
  margin-top: 4px;
}

/* Contact & Service Grids */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 3rem;
  align-items: start;
}

.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

/* Contact Info */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-info__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.contact-info__icon {
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

/* Footer */
.footer {
  background-color: var(--color-secondary);
  color: var(--color-gray-300);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer__title {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
}

.footer__link {
  color: var(--color-gray-300);
  display: block;
  padding: var(--spacing-xs) 0;
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: var(--font-size-sm);
}

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

.cta h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.cta p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
}

/* Section Headers */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  color: var(--color-gray-600);
  font-size: var(--font-size-lg);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mt-2 { margin-top: var(--spacing-md); }

/* Responsive Design */
@media (max-width: 992px) {
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero__subtitle {
    margin: 0 auto var(--spacing-lg);
  }
  
  .hero__cta {
    justify-content: center;
  }
  
  .hero__image {
    max-width: 600px;
    margin: 0 auto;
  }
  
  .profile {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .profile__image {
    max-width: 300px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 36px;
    --font-size-4xl: 32px;
    --font-size-3xl: 26px;
  }
  
  .header__container {
    height: 70px;
  }
  
  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .trust-bar__container {
    flex-direction: column;
    align-items: center;
  }
  
  .features {
    grid-template-columns: 1fr;
  }
  
  .process__steps {
    grid-template-columns: 1fr;
  }
  
  .footer__container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .service-grid {
    grid-template-columns: 1fr;
  }
  
  .price-box {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .btn--large {
    width: 100%;
  }
  
  .hero__cta {
    flex-direction: column;
  }
  
  .price-box {
    margin: 0 calc(-1 * var(--spacing-md));
    border-radius: 0;
  }
}