html {
  height: 100%;
}

:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --bg-color: #f8f9fa;
  --text-color: #212529;
  --card-bg: #ffffff;
  --footer-bg: #1a1a1a;
}

/* Dark Mode Variablen - einheitlich #1a1a1a für alle Hintergründe */
[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #f8f9fa;
  --card-bg: #1a1a1a;
  --footer-bg: #1a1a1a;
  --navbar-bg: #1a1a1a;
  --navbar-text: #ffffff;
  --navbar-border: #444;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  background-color: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Absolut sicherstellen, dass der Body im Dark Mode #1a1a1a ist */
[data-theme="dark"] body {
  background-color: #1a1a1a !important;
}

/* Einheitliche Hintergrundfarbe für alle Elemente im Dark Mode */
[data-theme="dark"] html,
[data-theme="dark"] body,
[data-theme="dark"] .navbar,
[data-theme="dark"] footer,
[data-theme="dark"] .bg-dark,
[data-theme="dark"] .bg-light,
[data-theme="dark"] .bg-white,
[data-theme="dark"] .footer-custom,
[data-theme="dark"] .card,
[data-theme="dark"] .card-header,
[data-theme="dark"] .card-body,
[data-theme="dark"] .card-footer,
[data-theme="dark"] .table,
[data-theme="dark"] .modal-content,
[data-theme="dark"] pre,
[data-theme="dark"] code {
  background-color: #1a1a1a !important;
}

/* Universelle Regel für alle Elemente im Dark Mode */
[data-theme="dark"] * {
  background-color: #1a1a1a !important;
}

/* Navbar */
.navbar {
  background-color: var(--primary-color) !important;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand {
  font-weight: bold;
}

/* Navbar Toggler für mobile Ansicht */
.navbar-toggler {
  border: 1px solid rgba(0,0,0,0.1) !important;
  padding: 0.25rem 0.5rem;
}

/* Light Mode Toggler */
[data-theme="light"] .navbar-toggler-icon {
  filter: none;
}

/* Dark Mode Toggler */
[data-theme="dark"] .navbar-toggler-icon {
  filter: invert(1);
}

/* Verbesserte Sichtbarkeit der Navigation */
.navbar .navbar-nav .nav-link {
  font-weight: 500;
}

.navbar .navbar-nav .nav-link:hover,
.navbar .navbar-nav .nav-link:focus {
  text-decoration: underline;
}

/* Light Mode Navigation Verbesserungen */
[data-theme="light"] .navbar {
  background-color: #ffffff !important;
  border-bottom: 1px solid #dee2e6;
}

[data-theme="light"] .navbar .navbar-brand,
[data-theme="light"] .navbar .navbar-nav .nav-link,
[data-theme="light"] .navbar .nav-item,
[data-theme="light"] .navbar .dropdown-toggle {
  color: #212529 !important;
}

/* Dark Mode Navigation Verbesserungen */
[data-theme="dark"] .navbar {
  border-bottom: 1px solid var(--navbar-border);
}

[data-theme="dark"] .navbar .navbar-brand,
[data-theme="dark"] .navbar .navbar-nav .nav-link,
[data-theme="dark"] .navbar .nav-item,
[data-theme="dark"] .navbar .dropdown-toggle,
[data-theme="dark"] .navbar .nav-link {
  color: #ffffff !important;
}

[data-theme="dark"] .navbar-toggler {
  border-color: #444 !important;
}

[data-theme="dark"] .navbar-nav .dropdown-menu {
  background-color: #1a1a1a;
  border-color: #444;
}

[data-theme="dark"] .navbar-nav .dropdown-item {
  color: #ffffff;
}

[data-theme="dark"] .navbar-nav .dropdown-item:hover,
[data-theme="dark"] .navbar-nav .dropdown-item:focus {
  background-color: #1a1a1a;
  color: #ffffff;
}

/* Dropdown-Menü im Dark Mode */
[data-theme="dark"] .dropdown-menu {
  background-color: var(--card-bg);
  border-color: #444;
}

[data-theme="dark"] .dropdown-item {
  color: var(--text-color);
}

[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus {
  background-color: #1a1a1a;
  color: var(--text-color);
}

/* Main Content */
main {
  flex: 1;
}

/* Cards */
.card {
  border: none;
  border-radius: 10px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.card-header {
  background-color: var(--primary-color);
  color: white;
  font-weight: bold;
}

/* Buttons */
.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: #1a252f;
  border-color: #1a252f;
}

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

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

/* Footer */
footer {
  background-color: var(--primary-color);
  color: white;
  margin-top: auto;
}

.footer-custom {
  background-color: var(--primary-color);
}

[data-theme="dark"] .footer-custom {
  background-color: #1a1a1a !important;
}

/* Dashboard */
.dashboard-stats {
  display: flex;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.stat-card {
  flex: 1;
  margin: 0 10px;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* Chat */
.chat-container {
  height: 400px;
  overflow-y: auto;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 15px;
  background-color: var(--card-bg);
  color: var(--text-color);
}

.chat-message {
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid #eee;
}

.chat-message:last-child {
  border-bottom: none;
}

.chat-message-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
  font-size: 0.9rem;
}

.chat-message-content {
  word-break: break-word;
}

/* Dark Mode Chat Anpassungen */
[data-theme="dark"] .chat-container {
  border-color: #444;
}

[data-theme="dark"] .chat-message {
  border-bottom-color: #444;
}

[data-theme="dark"] .text-muted {
  color: #adb5bd !important;
}

/* Forms */
.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.25rem rgba(44, 62, 80, 0.25);
}

/* Tables */
.table {
  background-color: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  color: var(--text-color);
}

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

/* Verbesserte Tabellenlesbarkeit im Dark Mode */
[data-theme="dark"] .table {
  border-color: #444;
}

[data-theme="dark"] .table td,
[data-theme="dark"] .table th {
  border-color: #444;
}

[data-theme="dark"] .table-striped > tbody > tr:nth-of-type(odd) {
  background-color: #1a1a1a;
}

[data-theme="dark"] .table-hover > tbody > tr:hover {
  background-color: #1a1a1a;
}

/* Badges */
.bg-primary {
  background-color: var(--primary-color) !important;
}

/* Home Page */
.home-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 80vh;
  padding: 2rem;
}

.logo-container {
  text-align: center;
  animation: fadeIn 1.5s ease-in-out;
}

.center-logo {
  max-width: 300px;
  height: auto;
}

.text-logo {
  font-size: 3rem;
  font-weight: bold;
  color: var(--primary-color);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Dark Mode Toggle */
.dark-mode-toggle {
  margin-left: 1rem;
}

.form-check-input {
  cursor: pointer;
  width: 3rem;
  height: 1.5rem;
}

.form-check-label {
  cursor: pointer;
  color: var(--text-color);
}

[data-theme="dark"] .form-check-label {
  color: #f8f9fa;
}

/* Login Button */
.login-btn {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  font-weight: bold;
  transition: all 0.3s ease;
}

.login-btn:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

[data-theme="dark"] .login-btn {
  color: #f8f9fa;
  border-color: #f8f9fa;
}

[data-theme="dark"] .login-btn:hover {
  background-color: #f8f9fa;
  color: #1a1a1a;
}

/* Minimal Footer */
.minimal-footer {
  padding: 1rem 0;
  position: fixed;
  bottom: 0;
  width: 100%;
  background-color: transparent;
  color: var(--text-color);
  z-index: 100;
}

/* Card Dark Mode */
[data-theme="dark"] .card {
  background-color: #1a1a1a !important;
  color: var(--text-color);
  border-color: #444;
}

[data-theme="dark"] .card-header {
  background-color: #1a1a1a !important;
  border-color: #444;
}

[data-theme="dark"] .table {
  background-color: #1a1a1a !important;
  color: var(--text-color);
}

[data-theme="dark"] .table td,
[data-theme="dark"] .table th {
  border-color: #444;
}

[data-theme="dark"] .modal-content {
  background-color: #1a1a1a !important;
  color: var(--text-color);
  border-color: #444;
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
  border-color: #444;
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: #1a1a1a !important;
  color: var(--text-color);
  border-color: #444;
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
  background-color: #1a1a1a !important;
  color: var(--text-color);
  border-color: var(--primary-color);
}

[data-theme="dark"] .input-group-text {
  background-color: #1a1a1a !important;
  color: var(--text-color);
  border-color: #555;
}

/* Footer im Dark Mode wird durch die allgemeine Regel oben gesteuert */

[data-theme="dark"] .bg-light {
  background-color: #1a1a1a !important;
}

[data-theme="dark"] .bg-white {
  background-color: #1a1a1a !important;
}

[data-theme="dark"] .border {
  border-color: #444 !important;
}

[data-theme="dark"] .text-dark {
  color: #f8f9fa !important;
}

/* Zusätzliche Dark Mode Anpassungen */
[data-theme="dark"] .alert {
  background-color: #1a1a1a !important;
  border-color: #444;
}

[data-theme="dark"] .alert-success {
  background-color: #1a1a1a !important;
  color: #75b798;
  border-color: #28a745;
}

[data-theme="dark"] .alert-danger {
  background-color: #1a1a1a !important;
  color: #ea868f;
  border-color: #dc3545;
}

[data-theme="dark"] .alert-info {
  background-color: #1a1a1a !important;
  color: #6edff6;
  border-color: #0dcaf0;
}

/* Transition für Auto-Hide Alerts */
.alert {
  transition: opacity 0.3s ease;
}

/* Responsive */
@media (max-width: 768px) {
  .dashboard-stats {
    flex-direction: column;
  }
  
  .stat-card {
    margin: 10px 0;
  }
  
  .center-logo {
    max-width: 200px;
  }
  
  .text-logo {
    font-size: 2rem;
  }
}