/* ===================================
   Integrationsupportpro - Main Styles
   =================================== */

/* CSS Variables for Light/Dark Mode */
:root {
  /* Primary Brand Color */
  --primary-color: #00c4cc;
  --primary-dark: #00a0a8;
  --primary-light: #33d1d8;

  /* Light Mode Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-accent: #e9ecef;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-muted: #adb5bd;
  --border-color: #dee2e6;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', var(--font-primary);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 400ms ease-in-out;

  /* Z-index */
  --z-header: 1000;
  --z-mobile-call: 1100;
  --z-modal: 2000;
}

/* Dark Mode Colors */
[data-theme="dark"] {
  --bg-primary: #0f1419;
  --bg-secondary: #1a1f28;
  --bg-accent: #252b36;
  --text-primary: #e8eaed;
  --text-secondary: #9aa0a6;
  --text-muted: #6c7178;
  --border-color: #3c4149;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
}

/* ===================================
   Reset & Base Styles
   =================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

/* ===================================
   Typography
   =================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

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

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

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

/* ===================================
   Icons
   =================================== */

.icon {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.icon-sm {
  width: 18px;
  height: 18px;
}

.icon-lg {
  width: 32px;
  height: 32px;
}

.icon-xl {
  width: 48px;
  height: 48px;
}

/* ===================================
   Layout Components
   =================================== */

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

.container-wide {
  max-width: 1400px;
}

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

.section-hero {
  padding: calc(var(--spacing-xl) * 2) 0;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

/* ===================================
   Header & Navigation
   =================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  z-index: var(--z-header);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .header {
  background-color: rgba(15, 20, 25, 0.95);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.logo-img {
  height: 40px;
  width: auto;
  transition: all var(--transition-base);
}


.logo-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

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

.nav-link {
  color: var(--text-primary);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link:hover {
  color: var(--primary-color);
  background-color: var(--bg-accent);
}

.nav-link.active {
  color: var(--primary-color);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

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

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

/* Theme Toggle */
.theme-toggle {
  background: var(--bg-accent);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: background-color var(--transition-base);
}

.theme-toggle:hover {
  background-color: var(--border-color);
  color: var(--primary-color);
}

/* ===================================
   Buttons
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-primary);
  font-size: 1rem;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  box-shadow: var(--shadow-sm);
}

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

.btn-secondary {
  background-color: var(--bg-accent);
  color: var(--text-primary);
}

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

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

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

/* Mobile Call Button */
.mobile-call-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-mobile-call);
  color: white;
  text-decoration: none;
  transition: all var(--transition-base);
  animation: pulse 2s infinite;
}

.mobile-call-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 32px rgba(0, 196, 204, 0.4);
}

@keyframes pulse {

  0%,
  100% {
    box-shadow: var(--shadow-lg), 0 0 0 0 rgba(0, 196, 204, 0.7);
  }

  50% {
    box-shadow: var(--shadow-lg), 0 0 0 15px rgba(0, 196, 204, 0);
  }
}

/* ===================================
   Cards
   =================================== */

.card {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);
  height: 100%;
  display: flex;
  flex-direction: column;
}

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

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

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.card-text {
  color: var(--text-secondary);
  line-height: 1.7;
  flex-grow: 1;
}

/* ===================================
   Grid System
   =================================== */

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}


/* ===================================
   Kontakt
   =================================== */

.contact-form {
  background-color: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

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

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 196, 204, 0.1);
}

.form-input.error,
.form-textarea.error,
select.form-input.error {
  border-color: #dc3545;
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-message {
  padding: 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
  font-weight: 500;
  transition: opacity var(--transition-base);
}

.form-message-success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.form-message-error {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

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

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: var(--spacing-md);
}

.checkbox-input {
  margin-top: 0.25rem;
}

.checkbox-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.contact-icon-wrapper {
  width: 48px;
  height: 48px;
  background-color: rgba(0, 196, 204, 0.1);
  color: var(--primary-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.map-container {
  width: 100%;
  height: 300px;
  background-color: var(--bg-accent);
  border-radius: var(--radius-lg);
  margin-top: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

/* ===================================
   Footer
   =================================== */

.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: var(--spacing-xl);
}

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

.footer-section h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

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

.footer-links li {
  margin-bottom: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Erster Eintrag (Adresse) im Kontakt-Bereich leicht nach oben ausrichten,
   damit das Icon bei mehrzeiligem Text sauber wirkt */
.footer-section:nth-of-type(3) .footer-links li:first-child {
  align-items: flex-start;
}

.footer-links li svg {
  flex-shrink: 0;
}

/* Kontakt-Icons im Footer leicht nach unten versetzen,
   damit sie optisch auf einer Linie mit dem Text stehen */
.footer-section:nth-of-type(3) .footer-links li svg {
  margin-top: 2px;
}

.footer-links a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.developer-credit {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.developer-credit a {
  color: var(--text-secondary);
  font-weight: 500;
}

.developer-credit a:hover {
  color: var(--primary-color);
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
  .container {
    padding: 0 var(--spacing-lg);
  }

  .grid {
    gap: var(--spacing-md);
  }

  .card {
    padding: var(--spacing-md);
  }

  .nav {
    gap: var(--spacing-md);
  }

  .nav-link {
    font-size: 0.95rem;
    padding: var(--spacing-xs);
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    flex-direction: column;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .menu-toggle {
    display: flex;
  }

  .mobile-call-btn {
    display: flex;
  }

  .section-hero {
    min-height: 40vh !important;
    padding-top: calc(var(--spacing-xl) + 2rem) !important;
    padding-bottom: var(--spacing-xl) !important;
  }

  .logo-text {
    font-size: 1.25rem;
  }

  .logo-img {
    height: 32px;
  }
}

/* Small Mobile (< 480px) */
@media (max-width: 480px) {
  :root {
    --spacing-xl: 3rem;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
  }

  .mobile-call-btn {
    width: 56px;
    height: 56px;
    bottom: 1.5rem;
    right: 1.5rem;
  }
}

/* ===================================
   Utility Classes
   =================================== */

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

.text-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mt-1 {
  margin-top: var(--spacing-xs);
}

.mt-2 {
  margin-top: var(--spacing-sm);
}

.mt-3 {
  margin-top: var(--spacing-md);
}

.mt-4 {
  margin-top: var(--spacing-lg);
}

.mt-5 {
  margin-top: var(--spacing-xl);
}

.mb-1 {
  margin-bottom: var(--spacing-xs);
}

.mb-2 {
  margin-bottom: var(--spacing-sm);
}

.mb-3 {
  margin-bottom: var(--spacing-md);
}

.mb-4 {
  margin-bottom: var(--spacing-lg);
}

.mb-5 {
  margin-bottom: var(--spacing-xl);
}

.fade-in {
  animation: fadeIn var(--transition-slow) ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

/* Logo Switching Logic */
.logo-light {
  display: block;
}

.logo-dark {
  display: none;
}

[data-theme='dark'] .logo-light {
  display: none;
}

[data-theme='dark'] .logo-dark {
  display: block;
}