/* Theme CSS - Dark/Light Mode */
:root {
  /* Light Mode (Default) */
  --bg-primary: #f5f5f5;
  --bg-secondary: #ffffff;
  --bg-accent: #f8f9fa;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-accent: #007bff;
  --border-color: #dee2e6;
  --shadow: 0 2px 10px rgba(0,0,0,0.1);
  --button-bg: #007bff;
  --button-hover: #0056b3;
  --admin-bg: #007bff;
  --admin-hover: #0056b3;
  --logout-bg: #dc3545;
  --logout-hover: #c82333;
  --success-bg: #28a745;
  --success-hover: #1e7e34;
}

[data-theme="dark"] {
  /* Dark Mode */
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-accent: #3a3a3a;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-accent: #4dabf7;
  --border-color: #444444;
  --shadow: 0 2px 10px rgba(0,0,0,0.3);
  --button-bg: #4dabf7;
  --button-hover: #339af0;
  --admin-bg: #4dabf7;
  --admin-hover: #339af0;
  --logout-bg: #fa5252;
  --logout-hover: #e03131;
  --success-bg: #51cf66;
  --success-hover: #40c057;
}

/* Base Styles */
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
}

.header {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 1rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.header-buttons {
  display: flex;
  gap: 10px;
  align-items: center;
}

.content {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.feature-box {
  background: var(--bg-accent);
  color: var(--text-primary);
  padding: 1rem;
  border-radius: 5px;
  margin-top: 20px;
  border-left: 4px solid var(--text-accent);
  transition: background-color 0.3s ease;
}

/* Buttons */
.admin-btn {
  background: var(--admin-bg);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  text-decoration: none;
  transition: background 0.3s;
  cursor: pointer;
}

.admin-btn:hover {
  background: var(--admin-hover);
}

.logout-btn {
  background: var(--logout-bg);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  text-decoration: none;
  transition: background 0.3s;
  cursor: pointer;
}

.logout-btn:hover {
  background: var(--logout-hover);
}

.theme-toggle {
  background: var(--text-accent);
  color: white;
  border: none;
  padding: 8px 12px;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.3s;
  font-size: 16px;
}

.theme-toggle:hover {
  background: var(--button-hover);
}

/* Tables (für Admin-Panel) */
table {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

table th, table td {
  border: 1px solid var(--border-color);
  padding: 8px;
}

table th {
  background: var(--bg-accent);
}

/* Forms */
input, select, button {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 5px;
  border-radius: 3px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--text-accent);
}

/* Links */
a {
  color: var(--text-accent);
  transition: color 0.3s ease;
}

a:hover {
  color: var(--button-hover);
}

/* Headings */
h1, h2, h3 {
  color: var(--text-primary);
}