* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, -apple-system, sans-serif; background: #f5f7fa; color: #333; }
nav { background: #1a1a2e; color: #eee; padding: 0.75rem 1.5rem; display: flex; align-items: center; gap: 1.5rem; }
nav a { color: #aad; text-decoration: none; }
nav a:hover { color: #fff; }
nav .nav-user { margin-left: auto; font-size: 0.9rem; display: flex; align-items: center; gap: 0.5rem; }
nav .nav-user form { display: inline; }
nav .nav-user button { background: transparent; border: 1px solid #667; color: #ccc; padding: 0.2rem 0.6rem; cursor: pointer; font-size: 0.9rem; }
nav .nav-user button:hover { color: #fff; border-color: #aaa; }
main { max-width: 1200px; margin: 1.5rem auto; padding: 0 1rem; }
h1 { margin-bottom: 0.75rem; }
h2 { margin-top: 1.5rem; margin-bottom: 0.5rem; }
p { margin: 0.5rem 0; }
.flash { padding: 0.75rem 1rem; border-radius: 4px; margin-bottom: 1rem; }
.flash.error { background: #fee; color: #c33; border: 1px solid #fcc; }
.flash.success { background: #efe; color: #2a2; border: 1px solid #cfc; }
table { width: 100%; border-collapse: collapse; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
th, td { padding: 0.5rem 0.75rem; text-align: left; border-bottom: 1px solid #eee; }
th { background: #f0f2f5; font-weight: 600; }
tr:hover { background: #f8f9fc; }
a { color: #2563eb; }
a:hover { text-decoration: underline; }
button { cursor: pointer; }
.stack-form { max-width: 480px; background: #fff; padding: 1.25rem; box-shadow: 0 1px 3px rgba(0,0,0,0.1); border-radius: 4px; }
.stack-form label { display: block; margin-bottom: 0.75rem; }
.stack-form input, .stack-form select { display: block; width: 100%; padding: 0.4rem 0.6rem; border: 1px solid #ccc; border-radius: 3px; margin-top: 0.2rem; font-size: 0.95rem; }
.stack-form button[type=submit] { background: #2563eb; color: #fff; border: none; padding: 0.5rem 1.25rem; border-radius: 4px; font-size: 1rem; }
.stack-form button[type=submit]:hover { background: #1d4ed8; }
.inline-form { display: inline; }
.inline-form button { background: transparent; border: none; color: #2563eb; text-decoration: underline; cursor: pointer; padding: 0; font-size: inherit; }
td form button { background: #dc2626; color: #fff; border: none; padding: 0.3rem 0.7rem; border-radius: 3px; font-size: 0.85rem; }
td form button:hover { background: #b91c1c; }
#domain-filter { width: 100%; max-width: 400px; padding: 0.5rem; border: 1px solid #ccc; border-radius: 4px; margin-bottom: 1rem; font-size: 1rem; }