/* GitHub-style Theme Variables */
:root {
  /* Dark theme (default) */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-overlay: #161b22;
  
  --border-primary: #30363d;
  --border-secondary: #21262d;
  --border-tertiary: #6e7681;
  
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --text-tertiary: #6e7681;
  --text-link: #58a6ff;
  --text-white: #f0f6fc;
  
  --btn-primary-bg: #238636;
  --btn-primary-hover: #2ea043;
  --btn-primary-border: rgba(240, 246, 252, 0.1);
  --btn-primary-shadow: rgba(0, 0, 0, 0.2);
  
  --btn-secondary-bg: #21262d;
  --btn-secondary-hover: #30363d;
  --btn-secondary-border: #30363d;
  
  --btn-danger-bg: #da3633;
  --btn-danger-hover: #f85149;
  --btn-danger-border: rgba(240, 246, 252, 0.1);
  
  --input-bg: #0d1117;
  --input-border: #30363d;
  --input-focus-border: #2f81f7;
  --input-placeholder: #6e7681;
  
  --accent-blue: #2f81f7;
  --accent-green: #3fb950;
  --accent-yellow: #d29922;
  --accent-red: #da3633;
  
  --shadow-sm: 0 1px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(140, 149, 159, 0.2);
  --shadow-lg: 0 12px 48px rgba(140, 149, 159, 0.3);
  
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, Inconsolata, "Fira Code", monospace;
  
  --sidebar-width: 280px;
  --header-height: 64px;
}

/* Light theme */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-tertiary: #eaeef2;
  --bg-overlay: #ffffff;
  
  --border-primary: #d0d7de;
  --border-secondary: #e1e4e8;
  --border-tertiary: #afb8c1;
  
  --text-primary: #24292f;
  --text-secondary: #57606a;
  --text-tertiary: #6e7781;
  --text-link: #0969da;
  --text-white: #ffffff;
  
  --btn-primary-bg: #2da44e;
  --btn-primary-hover: #2c974b;
  --btn-primary-border: rgba(27, 31, 36, 0.15);
  --btn-primary-shadow: rgba(27, 31, 36, 0.1);
  
  --btn-secondary-bg: #f6f8fa;
  --btn-secondary-hover: #f3f4f6;
  --btn-secondary-border: rgba(27, 31, 36, 0.15);
  
  --btn-danger-bg: #cf222e;
  --btn-danger-hover: #a40e26;
  --btn-danger-border: rgba(27, 31, 36, 0.15);
  
  --input-bg: #ffffff;
  --input-border: #d0d7de;
  --input-focus-border: #0969da;
  --input-placeholder: #8c959f;
  
  --accent-blue: #0969da;
  --accent-green: #1a7f37;
  --accent-yellow: #9a6700;
  --accent-red: #cf222e;
  
  --shadow-sm: 0 1px 0 rgba(27, 31, 36, 0.04);
  --shadow-md: 0 3px 6px rgba(140, 149, 159, 0.15);
  --shadow-lg: 0 8px 24px rgba(140, 149, 159, 0.2);
}

/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 14px;
  line-height: 1.5;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--text-link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 0.5em;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

p {
  margin-bottom: 1em;
  color: var(--text-secondary);
}

/* Navigation Bar */
.navbar {
  height: var(--header-height);
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.navbar-brand a {
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-brand a:hover {
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.navbar-nav a {
  color: var(--text-secondary);
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--radius-md);
}

.navbar-nav a:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  text-decoration: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 5px 16px;
  font-size: 14px;
  font-weight: 500;
  line-height: 20px;
  border: 1px solid;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background-color: var(--btn-primary-bg);
  border-color: var(--btn-primary-border);
  color: var(--text-white);
  box-shadow: var(--shadow-sm), var(--btn-primary-shadow);
}

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

.btn-secondary {
  background-color: var(--btn-secondary-bg);
  border-color: var(--btn-secondary-border);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

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

.btn-danger {
  background-color: var(--btn-danger-bg);
  border-color: var(--btn-danger-border);
  color: var(--text-white);
  box-shadow: var(--shadow-sm);
}

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

.btn-sm {
  padding: 3px 12px;
  font-size: 12px;
}

.btn-lg {
  padding: 10px 24px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Input Fields */
.form-control {
  width: 100%;
  padding: 8px 12px;
  font-size: 14px;
  line-height: 20px;
  color: var(--text-primary);
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
  border-color: var(--input-focus-border);
  box-shadow: 0 0 0 3px rgba(47, 129, 247, 0.3);
}

.form-control::placeholder {
  color: var(--input-placeholder);
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-primary);
}

.form-text {
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* Cards */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.card-header {
  padding: 16px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-body {
  padding: 16px;
}

.card-footer {
  padding: 16px;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
}

/* Tables */
.table-container {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table th,
.table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-primary);
}

.table th {
  font-weight: 600;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

.table td {
  color: var(--text-secondary);
}

.table tbody tr:hover {
  background-color: var(--bg-tertiary);
}

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

/* Empty state */
.table-empty {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-secondary);
}

/* Layout */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 480px;
}

.container-wide {
  max-width: 1440px;
}

.page-layout {
  display: flex;
  min-height: calc(100vh - var(--header-height));
}

.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-primary);
  padding: 24px;
  position: fixed;
  height: 100%;
  overflow-y: auto;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 24px;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 80px 24px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(90deg, var(--text-primary), var(--text-link));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* Features Grid */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  padding: 48px 0;
}

.feature-card {
  padding: 24px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 24px;
}

.feature-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Login Card */
.login-container {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 32px;
}

.login-title {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.login-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 12px;
  color: var(--text-tertiary);
}

/* GitHub Button */
.btn-github {
  background-color: var(--bg-primary);
  border-color: var(--border-primary);
  color: var(--text-primary);
}

.btn-github:hover {
  background-color: var(--bg-tertiary);
}

.btn-github svg {
  fill: currentColor;
}

/* Code Block */
.code-block {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.code-block code {
  color: var(--text-primary);
}

/* Token Display */
.token-display {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.token-value {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Alert/Flash Messages */
.alert {
  padding: 16px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.alert-success {
  background-color: rgba(46, 160, 67, 0.1);
  border-left: 4px solid var(--accent-green);
}

.alert-error {
  background-color: rgba(248, 81, 73, 0.1);
  border-left: 4px solid var(--accent-red);
}

.alert-warning {
  background-color: rgba(210, 153, 34, 0.1);
  border-left: 4px solid var(--accent-yellow);
}

.alert-info {
  background-color: rgba(47, 129, 247, 0.1);
  border-left: 4px solid var(--accent-blue);
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  padding: 16px;
  border-bottom: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 20px;
  padding: 4px;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 16px;
  max-height: 60vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 16px;
  border-top: 1px solid var(--border-primary);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  padding: 8px;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}

/* User Menu */
.user-menu {
  position: relative;
}

.user-menu-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-radius: var(--radius-md);
  cursor: pointer;
  background: none;
  border: none;
  color: var(--text-secondary);
}

.user-menu-btn:hover {
  background-color: var(--bg-tertiary);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--text-primary);
}

/* Sidebar Navigation */
.sidebar-nav {
  list-style: none;
}

.sidebar-nav-item {
  margin-bottom: 4px;
}

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
}

.sidebar-nav-link:hover,
.sidebar-nav-link.active {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  text-decoration: none;
}

.sidebar-nav-link svg {
  flex-shrink: 0;
}

/* Section Header */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
}

/* Info Box */
.info-box {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 24px;
}

.info-box-title {
  font-weight: 600;
  margin-bottom: 8px;
}

.info-box-text {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Copy Button */
.copy-btn {
  padding: 4px 8px;
  font-size: 12px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast-success {
  border-left: 4px solid var(--accent-green);
}

.toast-error {
  border-left: 4px solid var(--accent-red);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }

.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }

.hidden { display: none !important; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    position: relative;
    border-right: none;
    border-bottom: 1px solid var(--border-primary);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .page-layout {
    flex-direction: column;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .features {
    grid-template-columns: 1fr;
  }
}

/* Loading Spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-primary);
  border-top-color: var(--text-link);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 12px;
}

.badge-success {
  background-color: rgba(46, 160, 67, 0.2);
  color: var(--accent-green);
}

.badge-warning {
  background-color: rgba(210, 153, 34, 0.2);
  color: var(--accent-yellow);
}

.badge-danger {
  background-color: rgba(248, 81, 73, 0.2);
  color: var(--accent-red);
}