:root { --bg: #fafafa; --fg: #1f2937; --muted: #6b7280; --accent: #2563eb; --card: #fff; --border: #e5e7eb; }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, system-ui, sans-serif; background: var(--bg); color: var(--fg); }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 16px 24px; border-bottom: 1px solid var(--border); background: white; }
.brand { font-weight: 600; text-decoration: none; color: var(--fg); }
nav a { color: var(--accent); text-decoration: none; }
nav .email { color: var(--muted); }
main { max-width: 960px; margin: 32px auto; padding: 0 24px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 24px; margin-bottom: 16px; }
.btn { display: inline-block; background: var(--accent); color: white; padding: 10px 20px; border-radius: 6px; text-decoration: none; border: none; cursor: pointer; font-size: 14px; }
.btn:disabled { opacity: 0.5; }
input[type=email], input[type=text] { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.tile { display: block; background: white; border: 1px solid var(--border); border-radius: 8px; padding: 24px; text-decoration: none; color: var(--fg); }
.tile:hover { border-color: var(--accent); }
.tile h3 { margin: 0 0 8px; }
.tile p { margin: 0; color: var(--muted); font-size: 14px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); }
th { background: #f9fafb; font-weight: 600; font-size: 13px; color: var(--muted); }
footer { text-align: center; color: var(--muted); padding: 24px; }
.muted { color: var(--muted); }
.danger { color: #b91c1c; }