/* Global Styles */
:root {
  --primary-color: #42b983;
  --primary-color-dark: #36a471;
  --secondary-color: #f0f0f0;
  --background-color: #f5f7fa;
  --text-color: #333;
  --white-color: #fff;
  --danger-color: #e74c3c;
  --warning-color: #f39c12;
  --light-gray-color: #ccc;
  --border-radius: 8px;
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  outline: none;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  padding: 20px;
  max-width: 960px;
  margin: auto;
  line-height: 1.6;
}

/* Links */
a {
  text-decoration: none;
  color: var(--primary-color);
  transition: color 0.2s ease;
}

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

/* Layout & Cards */
.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.box, .card {
  background-color: var(--white-color);
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  box-shadow: var(--box-shadow);
  border-radius: var(--border-radius);
}

/* Buttons */
.control-button, button {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: var(--border-radius);
  background-color: var(--primary-color);
  color: var(--white-color) !important; /* Important to override visited styles */
  font-weight: bold;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
  font-size: 0.9rem;
  text-decoration: none; /* Ensure links styled as buttons don't have underlines */
}

.control-button:hover, button:hover {
  background-color: var(--primary-color-dark);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.control-button:disabled, button:disabled {
  background-color: var(--light-gray-color);
  cursor: not-allowed;
  box-shadow: none;
}

.button-secondary {
    background-color: #7f8c8d;
}

.button-secondary:hover {
    background-color: #6c7a7b;
}

.button-danger {
    background-color: var(--danger-color);
}
.button-danger:hover {
    background-color: #c0392b;
}


/* Fix for visited link-buttons */
a.control-button:visited {
  color: var(--white-color) !important;
}

/* Form Elements */
.selection-label {
  display: flex;
  align-items: center;
  padding: 0.75rem;
  border-radius: var(--border-radius);
  transition: background-color 0.2s ease;
  cursor: pointer;
}

.selection-label:hover {
  background-color: #f9f9f9;
}

input[type=checkbox] {
  width: 18px;
  height: 18px;
  margin-right: 12px;
  cursor: pointer;
}

/* Markdown & Code */
pre, code {
  background-color: #e8f5e9; /* Light green background */
  color: #1b5e20; /* Dark green text */
  padding: 0.25rem;
  border-radius: 4px;
}

pre {
  padding: 1rem;
  overflow-x: auto;
  white-space: pre-wrap;
  margin: 1rem 0;
  border: 1px solid #a5d6a7;
}

/* Result & Status Styles */
.correct {
  color: #2e7d32; /* Darker Green */
  font-weight: bold;
}

.wrong {
  color: var(--danger-color);
  font-weight: bold;
}

.selection-label.correct {
    background-color: #e8f5e9;
    border-left: 4px solid #4caf50;
}

.selection-label.wrong {
    background-color: #ffebee;
    border-left: 4px solid var(--danger-color);
}

/* Table Styles */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 1rem;
}

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

th, td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid #e0e0e0;
}

tbody tr:nth-of-type(even) {
  background-color: #fafafa;
}

tbody tr:hover {
  background-color: #f1f1f1;
}

/* Header */
h2 {
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}