:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4f;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --error: #f85149;
  --success: #3fb950;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  min-height: 100vh;
  line-height: 1.5;
}

.container {
  max-width: 560px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.25rem 0;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card h2 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.75rem 0;
}

.step-card {
  border-color: var(--accent);
  background: rgba(88, 166, 255, 0.06);
}

.step-card a {
  color: var(--accent);
  text-decoration: none;
}

.step-card a:hover {
  text-decoration: underline;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--text);
}

input[type="text"],
input[type="url"],
input[type="password"] {
  width: 100%;
  padding: 0.6rem 0.75rem;
  font-size: 0.9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  margin-bottom: 1rem;
}

input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.2);
}

.scopes {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.scope-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.scope-item:last-child {
  border-bottom: none;
}

.scope-item input {
  margin: 0.25rem 0 0 0;
  width: auto;
}

.scope-item label {
  margin: 0;
  font-weight: 400;
  cursor: pointer;
}

.scope-desc {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.2rem;
}

.scope-desc code {
  background: var(--bg);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.7rem;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
}

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-actions {
  margin-top: 1.5rem;
}

.error-msg {
  color: var(--error);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

/* Callback page */
body.callback-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
}

.callback-page .card {
  max-width: 520px;
  width: 100%;
}

.callback-page .callback-title {
  margin-top: 0;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.callback-page .callback-title.success {
  color: var(--success, #0d9488);
}

.callback-page .callback-title.success::before {
  content: "";
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230d9488' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'%3E%3C/path%3E%3C/svg%3E") center/contain no-repeat;
  flex-shrink: 0;
}

.callback-page .callback-title.error {
  color: var(--error);
}

.callback-page .download-row {
  margin: 1rem 0 0.5rem 0;
}

.callback-page .download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-family: inherit;
  color: #fff;
  background: var(--accent, #2563eb);
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
}

.callback-page .download-btn:hover {
  opacity: 0.9;
}

.callback-page .download-icon {
  display: inline-block;
  width: 1.1em;
  height: 1.1em;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4'%3E%3C/path%3E%3Cpolyline points='7 10 12 15 17 10'%3E%3C/polyline%3E%3Cline x1='12' y1='15' x2='12' y2='3'%3E%3C/line%3E%3C/svg%3E") center/contain no-repeat;
  vertical-align: middle;
  filter: brightness(0) invert(1);
}

.callback-page .error {
  color: var(--error);
}

.callback-page pre {
  background: var(--bg);
  padding: 1rem;
  border-radius: 8px;
  overflow: auto;
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

.token-box {
  width: 100%;
  min-height: 80px;
  padding: 0.75rem;
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  margin: 0.25rem 0 1rem 0;
  resize: vertical;
}

.token-box.small {
  min-height: 60px;
}

.callback-page .short-field-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.25rem 0 0.75rem 0;
}

.callback-page .short-field {
  flex: 1;
  min-width: 0;
  padding: 0.5rem 0.75rem;
  font-family: ui-monospace, monospace;
  font-size: 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
}

.callback-page .short-field:focus {
  outline: none;
  border-color: var(--accent);
}

.callback-page .token-row {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 0.25rem 0 1rem 0;
}

.callback-page .token-row .token-box {
  flex: 1;
  min-width: 0;
  margin: 0;
}

.callback-page .copy-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  font-family: inherit;
  color: #fff;
  background: var(--accent, #2563eb);
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
}

.callback-page .copy-btn:hover {
  opacity: 0.9;
}

.callback-page .copy-icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Crect x='9' y='9' width='13' height='13' rx='2' ry='2'%3E%3C/rect%3E%3Cpath d='M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1'%3E%3C/path%3E%3C/svg%3E") center/contain no-repeat;
  vertical-align: middle;
  filter: brightness(0) invert(1);
}

.auth-url-field {
  width: 100%;
  min-height: 120px;
  padding: 0.75rem;
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  resize: vertical;
}

.callback-page a {
  color: var(--accent);
  text-decoration: none;
}

.callback-page a:hover {
  text-decoration: underline;
}

.select-all-scopes {
  font-size: 0.85rem;
  color: var(--accent);
  cursor: pointer;
  margin-bottom: 0.5rem;
}

.select-all-scopes:hover {
  text-decoration: underline;
}