/* Star Rating Comparison Table - styling
   Five-color star scale (5 green ... 1 red), difficulty badges, a JS-positioned
   row tooltip (first row shows it below the row so the header cannot hide it),
   and horizontal scrolling with a sticky item column below 600px. */

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: aliceblue;
    color: #333;
    line-height: 1.4;
    font-size: 15px;
}

main {
    display: block;
    padding: 6px 10px;
}

/* ---------- controls ---------- */
.controls {
    background: white;
    border: 1px solid silver;
    border-radius: 6px;
    padding: 6px 10px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 14px;
}

.need {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: bold;
}

.need select {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 14px;
    padding: 3px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 18px;
}

.weight {
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.weight span {
    display: inline-block;
    min-width: 12px;
    font-weight: bold;
}

.weight input { width: 120px; }

button {
    font-size: 14px;
    padding: 4px 12px;
    border-radius: 5px;
    border: 1px solid #1d4ed8;
    background: #2563eb;
    color: white;
    cursor: pointer;
}

button:hover { background: #1d4ed8; }
button[aria-pressed="true"] { background: #1e3a8a; box-shadow: inset 0 2px 4px rgba(0,0,0,0.35); }
button[aria-pressed="true"]::before { content: "\2713  "; }
button.secondary { background: #f1f5f9; color: #1f2937; border-color: #64748b; }
button.secondary:hover { background: #e2e8f0; }

button:focus-visible, select:focus-visible, input:focus-visible, tr:focus-visible {
    outline: 3px solid #f59e0b;
    outline-offset: 1px;
}

.check { cursor: pointer; white-space: nowrap; }

/* ---------- table ---------- */
.table-wrap {
    margin-top: 6px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: 8px 10px;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
    height: 46px;
}

.comparison-table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #495057;
    font-size: 13px;
    height: 34px;
}

.comparison-table tbody tr:last-child td { border-bottom: none; }
.comparison-table tbody tr { cursor: default; transition: background-color 0.2s; }
.comparison-table tbody tr:hover, .comparison-table tbody tr:focus { background-color: #f0f7ff; }

.item-col {
    font-weight: bold;
    white-space: nowrap;
    background: white;
}

th.item-col { background: #f8f9fa; }

.rating { white-space: nowrap; font-size: 17px; }
.best-for { font-size: 13px; color: #444; }

.score-col { text-align: center !important; white-space: nowrap; }
td.score { font-weight: bold; font-size: 15px; color: #1e3a8a; }
tr.top-score td.score { color: #15803d; }
tr.top-score td.score::after { content: " \2605"; color: #15803d; }

.num {
    display: none;
    font-size: 13px;
    font-weight: bold;
    color: #1f2937;
    margin-left: 4px;
}

.show-numbers .num { display: inline; }

/* Star rating color system - 5 color scale */
.stars { letter-spacing: 1px; }
.stars-empty { color: #d4d4d4; letter-spacing: 1px; }
.stars-5 { color: #22c55e; } /* Excellent */
.stars-4 { color: #84cc16; } /* Very good */
.stars-3 { color: #f59e0b; } /* Good / average */
.stars-2 { color: #f97316; } /* Below average */
.stars-1 { color: #ef4444; } /* Poor */

/* Difficulty badges */
.difficulty {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    color: white;
}

.difficulty.easy   { background-color: #15803d; }
.difficulty.medium { background-color: #b45309; }
.difficulty.hard   { background-color: #b91c1c; }

/* ---------- legend and source ---------- */
.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    margin-top: 6px;
    font-size: 13px;
    color: #444;
}

.legend-item { display: flex; align-items: center; gap: 5px; }
.stars-key span { font-weight: bold; }

.source {
    margin-top: 4px;
    font-size: 12px;
    color: #64748b;
}

/* ---------- row tooltip ---------- */
.row-tooltip {
    position: absolute;
    display: none;
    max-width: 300px;
    background-color: #333;
    color: white;
    padding: 7px 11px;
    border-radius: 6px;
    font-size: 13px;
    line-height: 1.35;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    z-index: 50;
    pointer-events: none;
}

.row-tooltip.visible { display: block; }

/* ---------- narrow screens: horizontal scroll, item column stays fixed ---------- */
@media (max-width: 599px) {
    .table-wrap { overflow-x: auto; }
    .comparison-table { min-width: 780px; }
    .item-col {
        position: sticky;
        left: 0;
        z-index: 2;
        box-shadow: 2px 0 4px rgba(0, 0, 0, 0.08);
    }
    .need { flex-wrap: wrap; }
}