* { box-sizing: border-box; }
body { font-family: -apple-system, Segoe UI, Roboto, sans-serif; margin: 0; color: #1a1a1a; background: #f5f6f8; }

/* Auth */
body.auth { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: #1a1a1a; }
.card { background: #fff; padding: 32px; border-radius: 12px; min-width: 340px; box-shadow: 0 4px 24px rgba(0,0,0,.2); }
.card h1 { margin: 0 0 24px; }
.card label { display: block; margin-bottom: 16px; font-size: 14px; }
.card input { display: block; width: 100%; padding: 10px 12px; margin-top: 4px; border: 1px solid #ccc; border-radius: 6px; font-size: 16px; }
.card button { width: 100%; padding: 12px; background: #0d6efd; color: #fff; border: 0; border-radius: 6px; font-size: 16px; cursor: pointer; }

/* Topbar */
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 12px 24px; background: #1a1a1a; color: #fff; }
.topbar .brand { color: #fff; text-decoration: none; font-weight: 600; }
.topbar .logout { color: #ccc; text-decoration: none; font-size: 14px; }

/* Container */
.container { max-width: 760px; margin: 32px auto; padding: 0 16px; }

/* Form */
form.sale-form { background: #fff; padding: 24px; border-radius: 12px; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
form.sale-form label { display: block; margin-bottom: 16px; font-size: 14px; font-weight: 500; }
form.sale-form input, form.sale-form select, form.sale-form textarea {
  display: block; width: 100%; padding: 10px 12px; margin-top: 4px;
  border: 1px solid #ccc; border-radius: 6px; font-size: 15px;
}
form.sale-form button[type=submit] {
  padding: 12px 32px; background: #0d6efd; color: #fff;
  border: 0; border-radius: 6px; font-size: 16px; cursor: pointer;
}
form.sale-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.error  { background: #fee; border-left: 4px solid #d33; padding: 12px; margin: 16px 0; color: #800; }
.notice { background: #fff8d3; border-left: 4px solid #cc0; padding: 12px; margin: 16px 0; }
.ok     { background: #e6f7e6; border-left: 4px solid #0a0; padding: 12px; margin: 16px 0; color: #060; }
.repeat-banner { background: #fff8d3; border-left: 4px solid #cc0; padding: 12px; margin: 12px 0; font-size: 14px; }

.credentials-box {
  background: #1a1a1a; color: #0f0; font-family: monospace;
  padding: 16px; border-radius: 6px; white-space: pre-wrap; margin: 12px 0;
}