/* mCaptions Usage page – styles (colours come from theme.css tokens) */

#usage-main{flex:1;overflow-y:auto;padding:22px 24px 32px;width:100%;max-width:1100px;
            margin:0 auto;box-sizing:border-box}

#usage-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px}
#usage-head h2{margin:0;font-size:1.25rem;font-weight:600;color:var(--text-strong);margin-right:auto}

.usage-period{display:inline-flex;border:1px solid var(--border);border-radius:8px;overflow:hidden;
              height:var(--tap)}
.usage-period button{background:var(--surface);border:none;color:var(--text-2);font-family:inherit;
                     font-size:.8rem;font-weight:600;padding:0 14px;cursor:pointer;
                     transition:background .15s,color .15s}
.usage-period button+button{border-left:1px solid var(--border)}
.usage-period button:hover{color:var(--text)}
.usage-period button[aria-pressed=true]{background:var(--accent-bg);color:var(--accent)}

#usage-msg{color:var(--text-2);font-size:.92rem;padding:28px 0;text-align:center}

/* totals */
#usage-cards{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-bottom:18px}
.usage-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;
            padding:14px 16px;display:flex;flex-direction:column;gap:4px;min-width:0}
.usage-card i{color:var(--accent);font-size:1rem;margin-bottom:4px}
.usage-card .v{font-size:1.45rem;font-weight:600;color:var(--text-strong);white-space:nowrap;
               overflow:hidden;text-overflow:ellipsis}
.usage-card .k{font-size:.76rem;color:var(--text-3)}
.usage-card.main{border-color:var(--accent-border);background:var(--accent-bg)}

/* chart */
#usage-chart-box{background:var(--surface);border:1px solid var(--border);border-radius:10px;
                 padding:14px 16px 10px}
#usage-chart-title{font-size:.82rem;font-weight:600;color:var(--text-2);margin-bottom:10px}
#usage-detail{font-size:.84rem;color:var(--text);min-height:1.3em;margin:-4px 0 6px}
#usage-chart{height:220px;display:flex;align-items:flex-end;gap:3px;
             border-bottom:1px solid var(--border);padding-top:16px}
#usage-chart.empty{align-items:center;justify-content:center;color:var(--text-3);font-size:.86rem}
.bar-col{flex:1;min-width:0;height:100%;display:flex;flex-direction:column;justify-content:flex-end;
         align-items:center;position:relative;cursor:default}
.bar{width:100%;max-width:42px;background:var(--accent);border-radius:3px 3px 0 0;
     opacity:.85;transition:opacity .15s}
.bar-col:hover .bar,.bar-col.sel .bar{opacity:1}
.bar-col.sel .bar{box-shadow:0 0 0 2px var(--accent-border-strong)}
.bar-col{cursor:pointer}
.bar-val{font-size:.66rem;color:var(--text-3);margin-bottom:2px;white-space:nowrap}
#usage-axis{display:flex;gap:3px;margin-top:5px}
.axis-lab{flex:1;min-width:0;font-size:.66rem;color:var(--text-3);text-align:center;
          white-space:nowrap;overflow:visible}

#usage-note{font-size:.74rem;color:var(--text-3);margin-top:12px}

/* help dialog */
.usage-modal{position:fixed;inset:0;z-index:2000;background:var(--overlay);display:flex;
             align-items:flex-start;justify-content:center;padding:40px 16px;overflow-y:auto}
.usage-modal[hidden]{display:none}
.usage-modal-box{background:var(--surface);border:1px solid var(--border);border-radius:12px;
                 box-shadow:var(--shadow);width:560px;max-width:100%;padding:18px 22px}
.usage-modal-hdr{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:6px}
.usage-modal-hdr h3{margin:0;font-size:1rem;color:var(--text-strong)}
.usage-modal-hdr button{background:none;border:none;color:var(--text-3);font-size:1.05rem;cursor:pointer;
                        width:var(--tap);height:var(--tap);border-radius:8px}
.usage-modal-hdr button:hover{background:var(--hover);color:var(--text)}
.usage-modal ul{margin:0;padding-left:18px}
.usage-modal li{font-size:.86rem;color:var(--text-2);line-height:1.6;margin:6px 0}
.bar-col:focus-visible{outline:2px solid var(--accent-border-strong);outline-offset:1px;border-radius:3px}

@media (max-width:900px){
  #usage-cards{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:768px){
  #usage-main{padding:16px 16px 28px}
  #usage-cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .usage-card.main{grid-column:1 / -1}
  #usage-chart{height:180px;gap:2px}
  #usage-chart.days .bar-val{display:none}   /* 30 narrow bars: the detail line has the numbers */
  #usage-head h2{width:100%}
}