/* Base Reset & Variables */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1c2128;
  --border-color: #30363d;
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --success: #238636;
  --warning: #d29922;
  --danger: #da3633;
  --info: #2f81f7;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--accent), #a371f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Navigation */
nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

nav a {
  padding: 0.75rem 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.2s;
  font-weight: 500;
}

nav a:hover,
nav a.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.25rem;
  background: var(--accent);
  border-radius: 2px;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

td:first-child {
  width: 40%;
  color: var(--text-secondary);
  font-weight: 500;
}

td:last-child {
  color: var(--text-primary);
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 0.9rem;
}

tr:last-child td {
  border-bottom: none;
}

/* Lists */
ul {
  list-style: none;
  padding: 0;
}

ul li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
}

ul li::before {
  content: '✓';
  color: var(--success);
  margin-right: 0.75rem;
  font-weight: bold;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: background 0.2s;
  text-decoration: none;
}

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

.btn-danger {
  background: var(--danger);
}

.btn-danger:hover {
  background: #f85149;
}

.btn-warning {
  background: var(--warning);
  color: black;
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}

/* Test Sections */
.test-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.test-section h3 {
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.test-section p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

/* Status Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.badge-success {
  background: rgba(35, 134, 54, 0.2);
  color: #3fb950;
}

.badge-warning {
  background: rgba(210, 153, 34, 0.2);
  color: #d29922;
}

.badge-danger {
  background: rgba(218, 54, 51, 0.2);
  color: #f85149;
}

/* Results Area */
.results {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  margin-top: 1rem;
  min-height: 100px;
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 0.85rem;
  white-space: pre-wrap;
  overflow-x: auto;
}

/* Loading */
.loading {
  text-align: center;
  color: var(--text-secondary);
  padding: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }

  header h1 {
    font-size: 1.75rem;
  }

  nav {
    flex-direction: column;
  }

  nav a {
    text-align: center;
  }

  .btn-group {
    flex-direction: column;
  }
}