* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, sans-serif; line-height: 1.5; padding: 2rem; max-width: 600px; margin: 0 auto; }
h1, h2 { margin-bottom: 1rem; }
.card { background: #f5f5f5; border-radius: 8px; padding: 1.5rem; margin-bottom: 1rem; }
.form-group { margin-bottom: 1rem; }
label { display: block; margin-bottom: 0.25rem; font-weight: 500; }
input, button, select { font-size: 1rem; padding: 0.5rem; width: 100%; border: 1px solid #ccc; border-radius: 4px; }
input:focus, select:focus { outline: 2px solid #007bff; border-color: transparent; }
select { background: white; cursor: pointer; }
button { background: #007bff; color: white; border: none; cursor: pointer; margin-top: 0.5rem; }
button:hover { background: #0056b3; }
button:disabled { background: #ccc; cursor: not-allowed; }
.btn-secondary { background: #6c757d; }
.btn-secondary:hover { background: #545b62; }
.error { color: #dc3545; margin-top: 0.5rem; }
.success { color: #28a745; margin-top: 0.5rem; }
.recovery-code { font-size: 1.5rem; font-family: monospace; background: #fff3cd; padding: 1rem; border-radius: 4px; text-align: center; letter-spacing: 2px; }
.qr-display { text-align: center; margin: 1rem 0; }
.qr-display svg, .qr-display img { max-width: 200px; }
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: 1fr 1fr; }
table { width: 100%; border-collapse: collapse; margin-top: 1rem; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.5rem; border-bottom: 1px solid #ddd; }
th { background: #f5f5f5; }
.status-pending { color: #ffc107; }
.status-active { color: #28a745; }
.mono { font-family: monospace; }
.hidden { display: none; }
.mt-1 { margin-top: 1rem; }
.mb-1 { margin-bottom: 1rem; }
.text-center { text-align: center; }
.url-wrapper { position: relative; }
.url-wrapper input { padding-right: 2.5rem; }
.url-status { position: absolute; right: 0.5rem; top: 50%; transform: translateY(-50%); font-size: 1.2rem; }
.url-valid { color: #28a745; }
.url-invalid { color: #dc3545; }
.url-checking { color: #6c757d; }

/* Landing pages */
body.landing { max-width: 700px; }
body.landing nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 3rem; }
body.landing nav a { color: #333; text-decoration: none; }
body.landing nav .logo { font-weight: 600; font-size: 1.1rem; }
body.landing header { margin-bottom: 3rem; }
body.landing h1 { font-size: 2rem; margin-bottom: 0.5rem; }
body.landing .subtitle { color: #666; font-size: 1.1rem; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1.5rem; margin-bottom: 3rem; }
.feature h3 { margin-bottom: 0.5rem; }
.feature p { color: #666; font-size: 0.95rem; }
.how-it-works { margin-bottom: 3rem; }
.how-it-works h2 { margin-bottom: 1rem; }
.how-it-works ol { padding-left: 1.25rem; }
.how-it-works li { margin-bottom: 0.75rem; color: #444; }
body.landing footer { border-top: 1px solid #eee; padding-top: 1.5rem; color: #888; font-size: 0.9rem; }
body.landing footer a { color: #666; }
textarea { font-family: inherit; resize: vertical; min-height: 100px; }
.btn-link { display: inline-block; margin-top: 1rem; color: #007bff; text-decoration: none; }
.btn-link:hover { text-decoration: underline; }