:root {
    --primary: #337ab7;
    --primary-dark: #2e6da4;
    --border: #ddd;
    --muted: #777;
    --success: #3c763d;
    --danger: #a94442;
    --bg: #f5f5f5;
    --text: #333;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem;
}

a {
    color: var(--primary-dark);
}

/* Header */
.site-header {
    text-align: center;
    margin: 1.5rem 0;
}

.site-header h1 {
    margin: 0;
    font-size: 2rem;
}

.site-header h1 a {
    color: var(--primary-dark);
    text-decoration: none;
}

.tagline {
    margin: .25rem 0 0;
    color: var(--muted);
}

/* Panels (à la Bootstrap, XTools' framework) */
.panel {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 4px;
    box-shadow: 0 1px 1px rgba(0, 0, 0, .05);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.panel-heading {
    background: var(--primary);
    color: #fff;
    padding: .6rem 1rem;
    font-size: 1.1rem;
    font-weight: bold;
}

.panel-heading a {
    color: #fff;
    text-decoration: underline;
}

.panel-body {
    padding: 1rem;
}

/* Search form */
.search-form {
    padding: 1rem;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 1rem;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: .25rem;
}

.form-row label {
    font-weight: bold;
    font-size: .9rem;
}

.search-form input[type="text"],
.search-form select {
    padding: .4rem .5rem;
    border: 1px solid var(--border);
    border-radius: 3px;
    font-size: 1rem;
}

.search-form button {
    padding: .45rem 1.2rem;
    background: var(--primary);
    color: #fff;
    border: 1px solid var(--primary-dark);
    border-radius: 3px;
    font-size: 1rem;
    cursor: pointer;
}

.search-form button:hover {
    background: var(--primary-dark);
}

.example {
    text-align: center;
    color: var(--muted);
}

/* Score table */
.score-table {
    width: 100%;
    border-collapse: collapse;
}

.score-table td {
    padding: .5rem 1rem;
    border-top: 1px solid var(--border);
    vertical-align: top;
}

.score-table tbody tr:nth-child(odd) {
    background: #f9f9f9;
}

.score-table .metric {
    font-weight: bold;
    width: 40%;
}

.score-table .score {
    text-align: right;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    width: 5rem;
    font-weight: bold;
}

.score-table .desc {
    color: var(--muted);
    font-size: .9rem;
}

.positive {
    color: var(--success);
}

.negative {
    color: var(--danger);
}

.score-table tfoot td {
    border-top: 2px solid var(--primary);
    background: #fff;
    font-size: 1.05rem;
}

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

.error-panel .panel-heading {
    background: var(--danger);
}

/* Footer */
footer {
    text-align: center;
    color: var(--muted);
    padding: 1rem 0 2rem;
    font-size: .9rem;
}