/* 광주 양벌 테니스 돔 빈자리 그리드 (yb- 프리픽스로 ytcc style.css와 충돌 방지) */
:root {
    --yb-green: #1f8b4c;
    --yb-green-light: #e3f4ea;
    --yb-ink: #1c2733;
    --yb-muted: #6b7785;
    --yb-line: #e3e8ee;
    --yb-sat: #2563eb;
    --yb-sun: #dc2626;
}

.yb-week-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin: 10px 0;
}

.yb-nav-btn {
    border: 1px solid var(--yb-line);
    background: #fff;
    color: var(--yb-ink);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.yb-nav-btn:hover { background: var(--yb-green-light); border-color: var(--yb-green); }

.yb-week-label {
    font-size: 1.05rem;
    font-weight: 700;
    min-width: 190px;
    text-align: center;
    color: var(--yb-ink);
}

.yb-toolbar {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.yb-ghost-btn {
    border: 1px solid var(--yb-green);
    background: #fff;
    color: var(--yb-green);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
}

.yb-ghost-btn:hover { background: var(--yb-green-light); }

.yb-freeonly {
    font-size: 0.85rem;
    color: var(--yb-muted);
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.yb-status {
    font-size: 0.82rem;
    color: var(--yb-green);
    margin-left: auto;
}

.yb-grid-wrap {
    overflow-x: auto;
    background: #fff;
    border: 1px solid var(--yb-line);
    border-radius: 12px;
    -webkit-overflow-scrolling: touch;
}

.yb-grid {
    border-collapse: collapse;
    width: 100%;
    min-width: 640px;
    font-size: 0.82rem;
    color: var(--yb-ink);
}

.yb-grid th, .yb-grid td {
    border: 1px solid var(--yb-line);
    text-align: center;
    vertical-align: middle;
}

.yb-grid thead th {
    background: #fafbfc;
    padding: 8px 4px;
    position: sticky;
    top: 0;
    z-index: 2;
}

.yb-day-head .wd { display: block; font-weight: 700; font-size: 0.9rem; }
.yb-day-head .md { display: block; font-size: 0.72rem; color: var(--yb-muted); }
.yb-day-head.sat .wd { color: var(--yb-sat); }
.yb-day-head.sun .wd { color: var(--yb-sun); }
.yb-day-head.today { background: var(--yb-green-light); }

.yb-corner, .yb-court-head {
    background: #fafbfc;
    font-weight: 700;
    white-space: nowrap;
    padding: 6px 8px;
    position: sticky;
    left: 0;
    z-index: 1;
}

.yb-corner { z-index: 3; }

.yb-cell {
    padding: 4px;
    min-width: 64px;
    height: 40px;
}

.yb-cell.none { color: #c2c9d2; }
.yb-cell.closed { color: var(--yb-muted); background: #f1f3f6; font-size: 0.75rem; }
.yb-cell.err { color: var(--yb-sun); font-weight: 700; }
.yb-cell.free { background: #f3fbf6; padding: 6px 8px; }

.yb-times {
    color: var(--yb-green);
    font-weight: 600;
    font-size: 0.82rem;
    text-decoration: none;
    letter-spacing: 0.3px;
    line-height: 1.7;
    display: inline-block;
}

.yb-times span { white-space: nowrap; }
.yb-times i { color: #b6d6c2; font-style: normal; margin: 0 1px; }
.yb-times:hover span { text-decoration: underline; }

.yb-empty {
    padding: 40px 16px;
    color: var(--yb-muted);
    text-align: center;
}

.yb-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    font-size: 0.78rem;
    color: var(--yb-muted);
    margin: 12px 2px;
}

.yb-dot {
    display: inline-block;
    width: 11px;
    height: 11px;
    border-radius: 3px;
    margin-right: 4px;
    vertical-align: -1px;
}

.yb-dot.free { background: var(--yb-green); }
.yb-dot.none { background: #c2c9d2; }
.yb-dot.closed { background: #cfd6de; }
.yb-legend-hint { flex-basis: 100%; }

.yb-official {
    display: inline-block;
    color: var(--yb-green);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.92rem;
    margin: 4px 2px 8px;
}

.yb-official:hover { text-decoration: underline; }

.yb-cross-link { margin-top: 14px; }
.yb-cross-link a { color: var(--yb-green); font-weight: 600; text-decoration: none; }
.yb-cross-link a:hover { text-decoration: underline; }

@media (max-width: 560px) {
    .yb-week-label { min-width: 150px; font-size: 0.95rem; }
    .yb-grid { font-size: 0.78rem; }
}