:root {
    --fg: #1a1a1a;
    --bg: #fafafa;
    --muted: #777;
    --line: #ddd;
    --accent: #2563eb;
    --danger: #b91c1c;
    --card: #fff;
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    color: var(--fg);
    background: var(--bg);
    margin: 0;
    line-height: 1.5;
}

nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.5rem;
    background: #fff;
    border-bottom: 1px solid var(--line);
}
nav .brand { font-weight: 600; }
nav .spacer { flex: 1; }
nav a { color: var(--accent); text-decoration: none; }
nav a:hover { text-decoration: underline; }

main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.5rem;
}

h1 { margin-top: 0; }
h2 { margin-top: 0; font-size: 1.1rem; }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
.error { color: var(--danger); }

.row {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}
.row h1 { margin: 0; flex: 1; }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 1rem 1.25rem;
    margin-top: 1.25rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
}
th, td {
    text-align: left;
    padding: 0.5rem 0.6rem;
    border-bottom: 1px solid var(--line);
    vertical-align: middle;
}
th { font-weight: 600; font-size: 0.85rem; color: var(--muted); }
tr.disabled td { color: var(--muted); }

button, .button {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 4px;
    cursor: pointer;
    font: inherit;
    color: var(--fg);
    text-decoration: none;
}
button:hover, .button:hover { background: #f0f0f0; }
button.danger { color: var(--danger); border-color: var(--danger); }
button.danger:hover { background: #fee; }

form { display: flex; flex-direction: column; gap: 0.75rem; }
form.inline { display: inline-flex; flex-direction: row; gap: 0.25rem; margin: 0; }

label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.9rem; }
label.check { flex-direction: row; align-items: center; gap: 0.4rem; }

input[type=text], input[type=password], input[type=number], input[type=file], select {
    padding: 0.4rem 0.5rem;
    border: 1px solid var(--line);
    border-radius: 4px;
    background: #fff;
    font: inherit;
}
input[type=text]:focus, input[type=password]:focus,
input[type=number]:focus, select:focus {
    outline: 2px solid var(--accent);
    outline-offset: -1px;
}

fieldset {
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 0.6rem 0.8rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
}
fieldset legend { font-size: 0.85rem; color: var(--muted); padding: 0 0.3rem; }

.actions {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.login-card {
    max-width: 360px;
    margin: 5rem auto 0;
    background: #fff;
    padding: 1.5rem;
    border: 1px solid var(--line);
    border-radius: 6px;
}