* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Arial, sans-serif; background: #f6f7f9; color: #1a1d21; line-height: 1.6; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 560px; }
.site-header { background: #111827; color: #fff; padding: 12px 0; position: sticky; top: 0; }
.nav-inner { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.brand { font-size: 26px; font-weight: 800; color: #fff; letter-spacing: 0.5px; }
.nav-links { display: flex; gap: 16px; flex: 1; }
.auth-area button { background: none; border: 1px solid #4b5563; color: #fff; border-radius: 6px; padding: 4px 10px; cursor: pointer; margin-left: 10px; }
.muted { color: #6b7280; font-size: 14px; }
.card { background: #fff; border: 1px solid #e5e7eb; border-radius: 12px; padding: 16px; margin: 16px 0; }
input[type="text"], input[type="email"], input[type="password"], select, textarea { width: 100%; padding: 10px; border: 1px solid #d1d5db; border-radius: 8px; font-size: 15px; background: #fff; }
.btn { background: #111827; color: #fff; border: none; border-radius: 8px; padding: 10px 18px; cursor: pointer; font-size: 15px; }
.btn-danger { background: #b91c1c; }
.btn-small { padding: 5px 12px; font-size: 13px; margin-right: 6px; }
.form label { display: block; margin: 12px 0; font-weight: 600; }
.form label input, .form label select, .form label textarea { font-weight: 400; margin-top: 4px; }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0; }
.tab { border: 1px solid #d1d5db; background: #fff; border-radius: 8px; padding: 8px 18px; cursor: pointer; }
.tab.active { background: #111827; color: #fff; }
.msg { font-size: 14px; }
.msg.error { color: #b91c1c; }
.msg.ok { color: #15803d; }
.list { list-style: none; padding: 0; }
.list li { background: #fff; border: 1px solid #e5e7eb; border-radius: 10px; padding: 12px 14px; margin: 8px 0; }
.footer { padding: 24px 16px; color: #6b7280; font-size: 14px; text-align: center; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb; }