:root {
    --bg: #f4f5f7;
    --card-bg: #ffffff;
    --text: #1c1f26;
    --muted: #6b7280;
    --border: #e2e4e9;
    --primary: #2f6fed;
    --primary-dark: #1f4fc4;
    --danger: #d9534f;
    --success-bg: #e7f6ec;
    --success-text: #1c7a3e;
    --error-bg: #fdeceb;
    --error-text: #b02a24;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 16px 64px;
}

.topnav {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px;
    flex-wrap: wrap;
}

.topnav-brand { font-weight: 700; }
.topnav-links { display: flex; gap: 16px; flex: 1; flex-wrap: wrap; }
.topnav-links a, .topnav-user a { color: var(--primary); text-decoration: none; }
.topnav-links a:hover, .topnav-user a:hover { text-decoration: underline; }
.topnav-user { color: var(--muted); font-size: 0.9em; }

h1 { margin-top: 0; }

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px 24px;
    margin-bottom: 20px;
}

.auth-card {
    max-width: 380px;
    margin: 64px auto;
}

label {
    display: block;
    margin: 14px 0 4px;
    font-weight: 600;
    font-size: 0.9em;
}

input[type=text], input[type=password], input[type=number], select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1em;
}

.small-input { width: auto; display: inline-block; }

fieldset {
    margin-top: 18px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
}

.checkbox-label {
    font-weight: 400;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 6px 0;
}

.checkbox-label input { width: auto; }

.btn {
    display: inline-block;
    padding: 9px 16px;
    border-radius: 6px;
    border: none;
    background: var(--border);
    color: var(--text);
    cursor: pointer;
    font-size: 0.95em;
    text-decoration: none;
}

.btn-primary { background: var(--primary); color: #fff; margin-top: 20px; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-small { padding: 5px 10px; font-size: 0.85em; }

.inline-form { display: inline-block; margin-right: 6px; }
.actions-cell { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.reset-form { display: inline-flex; gap: 6px; align-items: center; }

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
}

.alert ul { margin: 0; padding-left: 20px; }
.alert-error { background: var(--error-bg); color: var(--error-text); }
.alert-success { background: var(--success-bg); color: var(--success-text); }

.table { width: 100%; border-collapse: collapse; }
.table th, .table td {
    text-align: left;
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    font-size: 0.92em;
}

.muted { color: var(--muted); }

.tag { padding: 2px 8px; border-radius: 10px; font-size: 0.8em; }
.tag-ok { background: var(--success-bg); color: var(--success-text); }
.tag-fail { background: var(--error-bg); color: var(--error-text); }

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    text-align: center;
}

.stat-value { font-size: 1.8em; font-weight: 700; }
.stat-label { color: var(--muted); font-size: 0.85em; margin-top: 4px; }

.pagination { margin-top: 12px; display: flex; justify-content: space-between; }

code { background: var(--bg); padding: 2px 6px; border-radius: 4px; }