* { box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
    background: #f4f6f8;
    color: #222;
}
header {
    background: #1f2937;
    color: #fff;
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
header h1 { margin: 0; font-size: 20px; }
header .user { font-size: 13px; opacity: .8; }
header .user a { color: #93c5fd; }

main {
    max-width: 760px;
    margin: 24px auto;
    padding: 0 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.card {
    background: #fff;
    border-radius: 8px;
    padding: 20px 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.card.muted { background: #f1f5f9; color: #475569; }
.card h2 { margin: 0 0 16px; font-size: 17px; }
.card h3 { margin: 0 0 8px; font-size: 14px; }

form { display: flex; flex-direction: column; gap: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: #475569; }
input, select {
    padding: 8px 10px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 14px;
}
button {
    background: #2563eb;
    color: #fff;
    border: 0;
    padding: 10px 16px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    align-self: flex-start;
}
button:hover { background: #1d4ed8; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
table th, table td { padding: 8px; border-bottom: 1px solid #e5e7eb; text-align: left; }
table.kv th { width: 120px; color: #64748b; font-weight: 500; }

.flash { padding: 12px 16px; border-radius: 6px; font-size: 14px; }
.flash-success { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.flash-error   { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }

code { background: #e2e8f0; padding: 2px 6px; border-radius: 4px; font-size: 13px; }
a { color: #2563eb; }