/* Khối "Lịch sử giá khu vực" (includes/price_history.php + assets/js/price-history.js) */
.ph{margin:18px 0;background:var(--bg-card,#161b27);border:1px solid var(--border,rgba(255,255,255,.08));border-radius:var(--radius,12px);padding:16px 18px}
.ph-toggle{display:flex;justify-content:space-between;align-items:center;gap:10px;width:100%;background:none;border:none;color:var(--text-1,#e8ecf4);font:inherit;font-size:calc(16px * var(--fs-scale,1));font-weight:700;text-align:left;cursor:pointer;padding:0}
.ph-toggle .chev{flex-shrink:0;transition:transform .2s;transform:rotate(-90deg)}
.ph-toggle.open .chev{transform:none}
#ph-content{margin-top:12px}
.ph-note{font-size:calc(12px * var(--fs-scale,1));color:var(--text-3,#5a6478);margin-bottom:12px}
.ph-bar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:14px}
.ph-seg{display:inline-flex;border:1px solid var(--border,rgba(255,255,255,.12));border-radius:8px;overflow:hidden}
.ph-seg button{background:none;border:none;border-right:1px solid var(--border,rgba(255,255,255,.12));color:var(--text-2,#a0aab8);font:inherit;font-size:calc(13px * var(--fs-scale,1));font-weight:600;padding:6px 14px;cursor:pointer}
.ph-seg button:last-child{border-right:none}
.ph-seg button.on{background:var(--bg2,#1c2130);color:var(--text-1,#e8ecf4)}
.ph-cards{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--border,rgba(255,255,255,.08));border-radius:12px;margin-bottom:16px;overflow:hidden}
.ph-card{padding:16px 18px;border-right:1px solid var(--border,rgba(255,255,255,.08))}
.ph-card:last-child{border-right:none}
.ph-big{display:flex;align-items:center;gap:8px;font-size:calc(24px * var(--fs-scale,1));font-weight:800;line-height:1.2;margin-bottom:6px}
.ph-big small{font-size:calc(13px * var(--fs-scale,1));font-weight:500;color:var(--text-2,#a0aab8)}
.ph-cap{font-size:calc(13px * var(--fs-scale,1));color:var(--text-2,#a0aab8);line-height:1.5}
.ph-ic{width:24px;height:24px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:calc(14px * var(--fs-scale,1));font-weight:800;flex-shrink:0}
.ph-ic.down{background:#ef4444}.ph-ic.up{background:#10b981}.ph-ic.flat{background:#6b7280}
.ph-chart{position:relative;margin-bottom:6px}
.ph-chart svg{width:100%;height:auto;display:block}
.ph-chart text{fill:var(--text-3,#8b95a7);font-size:11px}
.ph-chart .grid{stroke:var(--border,rgba(255,255,255,.1));stroke-dasharray:3 4}
.ph-tip{position:absolute;pointer-events:none;background:#0b0e14;border:1px solid var(--border,rgba(255,255,255,.15));border-radius:8px;padding:8px 10px;font-size:calc(12px * var(--fs-scale,1));line-height:1.6;color:#e8ecf4;white-space:nowrap;z-index:5;display:none}
.ph-legend{display:flex;flex-wrap:wrap;gap:6px 22px;justify-content:center;font-size:calc(12.5px * var(--fs-scale,1));color:var(--text-2,#a0aab8);margin:6px 0 16px}
.ph-legend i{display:inline-block;width:18px;height:3px;border-radius:2px;margin-right:6px;vertical-align:middle}
.ph-legend i.dot{width:10px;height:10px;border-radius:50%}
.ph-nb{border:1px solid var(--border,rgba(255,255,255,.08));border-radius:12px;overflow:hidden}
.ph-nb-head{display:grid;grid-template-columns:1.3fr 1.1fr 1fr 18px;gap:8px;padding:14px 16px;border-bottom:1px solid var(--border,rgba(255,255,255,.08));font-size:calc(13px * var(--fs-scale,1));font-weight:700}
.ph-nb-head small{display:block;font-weight:400;color:var(--text-3,#5a6478);font-size:calc(12px * var(--fs-scale,1))}
.ph-nb-head .c{text-align:center}
.ph-nrow{display:grid;grid-template-columns:1.3fr 1.1fr 1fr 18px;gap:8px;align-items:center;padding:12px 16px;border-bottom:1px solid var(--border,rgba(255,255,255,.06));color:var(--text-1,#e8ecf4);text-decoration:none;font-size:calc(13.5px * var(--fs-scale,1))}
.ph-nrow:last-child{border-bottom:none}
.ph-nrow:hover{background:var(--bg2,#1c2130)}
.ph-nrow .m{text-align:center;font-weight:700}.ph-nrow .m small{font-weight:400;color:var(--text-2,#a0aab8)}
.ph-nrow .n{text-align:right;font-weight:600}
.ph-nrow .ar{color:var(--text-3,#5a6478)}
.ph-cur{display:inline-block;margin-left:6px;background:#6b7280;color:#fff;font-size:calc(10.5px * var(--fs-scale,1));font-weight:700;padding:1px 6px;border-radius:4px;vertical-align:middle}
@media (max-width:700px){
  .ph-cards{grid-template-columns:1fr}.ph-card{border-right:none;border-bottom:1px solid var(--border,rgba(255,255,255,.08))}.ph-card:last-child{border-bottom:none}
  .ph-nb-head,.ph-nrow{grid-template-columns:1.2fr 1fr .9fr 12px;padding:10px 12px;gap:6px}
}

/* Bảng giá theo tuyến đường */
.ph-st{margin-bottom:16px}
.ph-st-head,.ph-strow{grid-template-columns:1.5fr 1fr .8fr .5fr}
.ph-st-head .n,.ph-strow .n{text-align:right}
.ph-strow{cursor:default}
.ph-strow.cur{background:rgba(79,156,249,.08)}
.ph-strow .m small{display:block;font-weight:400;color:var(--text-3,#5a6478);font-size:calc(11.5px * var(--fs-scale,1))}
.ph-strow .up{color:#f59e0b}.ph-strow .dn{color:#34d399}
.ph-mine{font-size:calc(11.5px * var(--fs-scale,1));font-weight:500;color:var(--accent,#4f9cf9);margin-top:2px}
@media (max-width:700px){.ph-st-head,.ph-strow{grid-template-columns:1.3fr 1fr .8fr .5fr}}