.mail-chart { min-width:0; width:100%; }
.mail-chart-controls { display:flex; justify-content:space-between; align-items:flex-end; flex-wrap:wrap; gap:12px; margin:12px 0 16px; }
.mail-chart-total { color:var(--text-2); font-size:12px; font-weight:600; }
.mail-chart-filters { display:flex; flex-wrap:wrap; gap:8px; margin-left:auto; }
.mail-chart-field { display:flex; flex-direction:column; gap:5px; font-size:10px; color:var(--text-2); }
.mail-chart-field select,.mail-chart-field input { min-height:36px; max-width:100%; border:1px solid var(--border); border-radius:8px; background:var(--surface); color:var(--text); padding:6px 9px; font:inherit; font-size:12px; }
.mail-chart-field select:focus-visible,.mail-chart-field input:focus-visible { outline:2px solid var(--brand); outline-offset:2px; }
.mail-chart-plot { position:relative; min-width:0; min-height:280px; }
.mail-chart-plot svg { display:block; width:100%; height:auto; overflow:visible; }
.mail-chart-grid { stroke:var(--border); stroke-width:1; }
.mail-chart-axis { fill:var(--text-2); font-size:11px; }
.mail-chart-value { fill:var(--text); font-size:11px; font-weight:700; }
.mail-chart-bar { transition:opacity .16s ease; }
.mail-chart-hit { cursor:crosshair; }
.mail-chart-hit:focus { outline:none; stroke:var(--brand); stroke-width:1; }
.mail-chart-tooltip { position:absolute; top:4px; z-index:3; width:max-content; max-width:200px; padding:10px 12px; border:1px solid var(--border); border-radius:9px; background:var(--surface); box-shadow:0 4px 16px #0002; font-size:12px; pointer-events:none; animation:mail-tooltip-in .12s ease; }
.mail-chart-tooltip strong,.mail-chart-tooltip span { display:block; line-height:1.7; }
.mail-chart-tooltip[hidden] { display:none; }
.mail-chart-legend { display:flex; gap:10px; flex-wrap:wrap; }
.mail-chart-legend-button { display:flex; align-items:center; gap:7px; border:1px solid var(--border); border-radius:7px; background:var(--surface); color:var(--text); padding:7px 10px; font:inherit; font-size:12px; cursor:pointer; }
.mail-chart-legend-button::before { content:''; width:9px; height:9px; border-radius:50%; background:var(--series-color); }
.mail-chart-legend-button[aria-pressed=false] { opacity:.5; text-decoration:line-through; }
.mail-chart-state { display:flex; align-items:center; justify-content:center; min-height:260px; color:var(--text-2); font-size:13px; text-align:center; }
.mail-chart-skeleton { margin-top:16px; border-radius:10px; background:linear-gradient(100deg,var(--surface-2) 20%,var(--surface) 45%,var(--surface-2) 70%); background-size:200% 100%; animation:mail-chart-loading 1.5s infinite; }
@keyframes mail-chart-loading { to { background-position:-200% 0; } }
@keyframes mail-tooltip-in { from { opacity:0; transform:translateY(3px); } to { opacity:1; transform:translateY(0); } }
@media(max-width:600px) { .mail-chart-filters { width:100%; margin-left:0; } .mail-chart-field { flex:1 1 90px; min-width:0; } .mail-chart-field select,.mail-chart-field input { width:100%; box-sizing:border-box; min-height:44px; } .mail-chart-legend-button { min-height:44px; } .mail-chart-plot { min-height:220px; } }
@media(prefers-reduced-motion:reduce) { .mail-chart-skeleton,.mail-chart-tooltip { animation:none; } .mail-chart-bar { transition:none; } }
@media(max-width:600px) { .mail-chart-custom .mail-chart-field:first-child { flex-basis:100%; } .mail-chart-custom .mail-chart-field:not(:first-child) { flex-basis:140px; } }