#system-log-dialog { box-sizing: border-box; width: min(820px, calc(100% - 32px)); height: min(760px, 88dvh); max-height: 88dvh; padding: 0; border: 0; border-radius: 18px; background: #fff; color: #1e293b; font-size: 14px; box-shadow: 0 24px 64px #0f172a40; }
#system-log-dialog[open] { display: flex; flex-direction: column; animation: system-log-in .18s ease-out; }
#system-log-dialog::backdrop { background: #0f172a66; backdrop-filter: blur(2px); }
#system-log-dialog * { box-sizing: border-box; }
@keyframes system-log-in { from { opacity: 0; transform: translateY(8px) scale(.99); } }
#system-log-dialog button { font: inherit; cursor: pointer; }
#system-log-dialog button:disabled { opacity: .5; cursor: wait; }
#system-log-dialog button:focus-visible { outline: 2px solid #6366f1; outline-offset: 2px; }

#system-log-dialog .system-log-header { display: flex; align-items: center; gap: 12px; padding: 18px 20px 14px 24px; }
#system-log-dialog .system-log-badge { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; width: 40px; height: 40px; border-radius: 12px; background: #eef2ff; color: #4f46e5; }
#system-log-dialog .system-log-heading { flex: 1; min-width: 0; }
#system-log-dialog h2 { margin: 0; font-size: 18px; line-height: 1.35; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#system-log-dialog .system-log-heading p { margin: 2px 0 0; color: #64748b; font-size: 13px; }
#system-log-dialog .system-log-actions { display: flex; gap: 4px; flex-shrink: 0; }
#system-log-dialog .system-log-icon { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; padding: 0; border: 0; border-radius: 10px; background: transparent; color: #64748b; }
#system-log-dialog .system-log-icon:hover { background: #f1f5f9; color: #0f172a; }
#system-log-dialog .system-log-icon.is-loading svg { animation: system-log-spin .8s linear infinite; }
@keyframes system-log-spin { to { transform: rotate(360deg); } }

#system-log-dialog .system-log-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; padding: 0 24px; }
#system-log-dialog .system-log-tabs { display: inline-flex; padding: 3px; border-radius: 10px; background: #f1f5f9; }
#system-log-dialog [role=tab] { padding: 6px 16px; border: 0; border-radius: 8px; background: transparent; color: #64748b; font-size: 13px; font-weight: 500; }
#system-log-dialog [role=tab]:hover { color: #0f172a; }
#system-log-dialog [role=tab][aria-selected=true] { background: #fff; color: #0f172a; box-shadow: 0 1px 3px #0f172a1f; }
#system-log-dialog .system-log-filter { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border: 1px solid #e2e8f0; border-radius: 999px; background: #fff; color: #475569; font-size: 13px; }
#system-log-dialog .system-log-filter svg { width: 15px; height: 15px; }
#system-log-dialog .system-log-filter:hover { border-color: #cbd5e1; background: #f8fafc; }
#system-log-dialog .system-log-filter[aria-pressed=true] { border-color: #fcd34d; background: #fffbeb; color: #92400e; }
#system-log-dialog .system-log-notice { display: flex; align-items: flex-start; gap: 6px; margin: 12px 24px 0; color: #94a3b8; font-size: 12px; line-height: 1.5; }
#system-log-dialog .system-log-notice svg { flex-shrink: 0; width: 14px; height: 14px; margin-top: 2px; }

#system-log-dialog .system-log-body { flex: 1; min-height: 0; overflow: auto; overscroll-behavior: contain; margin-top: 12px; padding: 0 24px 8px; border-top: 1px solid #eef2f6; }
#system-log-dialog .system-log-body:focus { outline: none; }
#system-log-dialog .system-log-list, #system-log-dialog .system-log-day-list { margin: 0; padding: 0; list-style: none; }
#system-log-dialog .system-log-day[hidden], #system-log-dialog .system-log-item[hidden] { display: none; }
#system-log-dialog .system-log-day-title { position: sticky; top: 0; z-index: 1; margin: 0; padding: 14px 0 8px; background: linear-gradient(#fff 75%, #fff0); color: #475569; font-size: 12px; font-weight: 600; letter-spacing: .02em; }
/* Timeline: time on the left, a level-coloured dot on the rail, the card on the right. */
#system-log-dialog .system-log-item { --dot: #94a3b8; position: relative; display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 0 18px; padding-bottom: 10px; }
#system-log-dialog .system-log-item::before { content: ''; position: absolute; left: 52px; top: 0; bottom: 0; width: 2px; background: #eef2f6; }
#system-log-dialog .system-log-item:last-child::before { bottom: auto; height: 18px; }
#system-log-dialog .system-log-item::after { content: ''; position: absolute; left: 48px; top: 13px; width: 10px; height: 10px; border-radius: 50%; background: var(--dot); box-shadow: 0 0 0 3px #fff; }
#system-log-dialog .system-log-item[data-level=warn] { --dot: #f59e0b; }
#system-log-dialog .system-log-item[data-level=error] { --dot: #ef4444; }
#system-log-dialog .system-log-time { padding-top: 8px; color: #94a3b8; font-size: 12px; text-align: right; font-variant-numeric: tabular-nums; }
#system-log-dialog .system-log-card { min-width: 0; padding: 8px 12px 10px; border-radius: 12px; overflow-wrap: anywhere; line-height: 1.6; transition: background .15s; }
#system-log-dialog .system-log-card:hover { background: #f8fafc; }
#system-log-dialog [data-level=warn] .system-log-card { background: #fffbeb; }
#system-log-dialog [data-level=error] .system-log-card { background: #fef2f2; }
#system-log-dialog .system-log-head { display: flex; align-items: baseline; gap: 8px; }
#system-log-dialog .system-log-title { font-size: 14px; font-weight: 600; color: #0f172a; }
#system-log-dialog .system-log-level { flex-shrink: 0; border-radius: 6px; padding: 0 6px; font-size: 11px; font-weight: 600; line-height: 18px; }
#system-log-dialog [data-level=warn] .system-log-level { background: #fef3c7; color: #92400e; }
#system-log-dialog [data-level=error] .system-log-level { background: #fee2e2; color: #b91c1c; }
#system-log-dialog .system-log-meta { display: flex; flex-wrap: wrap; gap: 2px 12px; margin-top: 2px; color: #64748b; font-size: 12px; }
#system-log-dialog .system-log-target { color: #4f46e5; }
#system-log-dialog .system-log-detail { margin: 6px 0 0; color: #334155; font-size: 13px; white-space: pre-wrap; }
#system-log-dialog .system-log-detail b { color: #64748b; font-weight: 500; }
#system-log-dialog .system-log-detail.is-clamped { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
#system-log-dialog .system-log-error { color: #b91c1c; }
#system-log-dialog .system-log-muted { color: #94a3b8; }
#system-log-dialog .system-log-expand { padding: 0; border: 0; background: none; color: #4f46e5; font-size: 12px; }
#system-log-dialog .system-log-changes { display: grid; gap: 4px; margin: 8px 0 0; font-size: 13px; }
#system-log-dialog .system-log-change { display: grid; grid-template-columns: 84px minmax(0, 1fr); gap: 8px; align-items: baseline; }
#system-log-dialog .system-log-change dd { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 6px; margin: 0; min-width: 0; }
#system-log-dialog .system-log-field { color: #64748b; }
#system-log-dialog .system-log-before { color: #64748b; background: #f1f5f9; border-radius: 4px; padding: 0 6px; text-decoration: line-through; text-decoration-color: #cbd5e1; }
#system-log-dialog .system-log-arrow { color: #94a3b8; }
#system-log-dialog .system-log-after { color: #166534; background: #dcfce7; border-radius: 4px; padding: 0 6px; }

#system-log-dialog .system-log-empty { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 56px 16px; color: #64748b; text-align: center; }
#system-log-dialog .system-log-empty[hidden] { display: none; }
#system-log-dialog .system-log-empty-icon { width: 48px; height: 48px; margin-bottom: 6px; border-radius: 14px; background: #f1f5f9 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M14 3H7a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h10a2 2 0 0 0 2-2V8zM14 3v5h5M9 13h6M9 17h4'/%3E%3C/svg%3E") center / 24px no-repeat; }
#system-log-dialog .system-log-empty strong { color: #334155; font-size: 15px; }
#system-log-dialog .system-log-empty small { font-size: 13px; }
#system-log-dialog .system-log-more { display: flex; justify-content: center; padding: 6px 0 10px; }
#system-log-dialog .system-log-more button { padding: 7px 18px; border: 1px solid #e2e8f0; border-radius: 999px; background: #fff; color: #475569; font-size: 13px; }
#system-log-dialog .system-log-more button:hover { background: #f8fafc; }
#system-log-dialog .system-log-more button[hidden] { display: none; }
#system-log-dialog .system-log-skeleton { padding-top: 14px; }
#system-log-dialog .system-log-skeleton-row { height: 54px; margin: 0 0 10px 62px; border-radius: 12px; background: linear-gradient(90deg, #f1f5f9 25%, #f8fafc 50%, #f1f5f9 75%) 0 0 / 200% 100%; animation: system-log-shimmer 1.2s linear infinite; }
@keyframes system-log-shimmer { to { background-position: -200% 0; } }
#system-log-dialog footer { padding: 10px 24px 14px; border-top: 1px solid #eef2f6; color: #94a3b8; font-size: 12px; }

/* Icon entry beside the list heading. */
.conversation-sidebar-tools { display: flex; align-items: center; gap: 2px; flex-shrink: 0; }
.system-log-entry { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; padding: 0; border: 0; border-radius: 8px; background: transparent; color: #64748b; cursor: pointer; }
.system-log-entry:hover { background: rgba(0,0,0,0.06); color: #0f172a; }
.system-log-entry:focus-visible { outline: 2px solid #6366f1; outline-offset: 1px; }
.system-log-entry[hidden] { display: none; }

@media (max-width: 680px) {
  #system-log-dialog { width: 100%; max-width: 100%; height: 100dvh; max-height: 100dvh; margin: 0; border-radius: 0; padding-top: env(safe-area-inset-top, 0px); }
  #system-log-dialog .system-log-header { padding: 12px 10px 10px 16px; }
  #system-log-dialog .system-log-badge { display: none; }
  #system-log-dialog .system-log-toolbar { padding: 0 16px; }
  #system-log-dialog .system-log-tabs { flex: 1; }
  #system-log-dialog [role=tab] { flex: 1; }
  #system-log-dialog .system-log-filter { width: 100%; justify-content: center; }
  #system-log-dialog .system-log-notice { margin: 10px 16px 0; }
  #system-log-dialog .system-log-body { padding: 0 16px 8px; }
  #system-log-dialog .system-log-item { grid-template-columns: 38px minmax(0, 1fr); gap: 0 14px; }
  #system-log-dialog .system-log-item::before { left: 44px; }
  #system-log-dialog .system-log-item::after { left: 40px; }
  #system-log-dialog .system-log-skeleton-row { margin-left: 52px; }
  #system-log-dialog .system-log-change { grid-template-columns: 1fr; gap: 0; }
  #system-log-dialog footer { padding: 8px 16px calc(10px + env(safe-area-inset-bottom, 0px)); }
}
@media (prefers-reduced-motion: reduce) {
  #system-log-dialog[open], #system-log-dialog .system-log-icon.is-loading svg, #system-log-dialog .system-log-skeleton-row { animation: none; }
}

html[data-theme="dark"] #system-log-dialog { background: var(--cf-bg); color: var(--cf-text); box-shadow: 0 24px 64px #0008; }
html[data-theme="dark"] #system-log-dialog :is(.system-log-title, .system-log-empty strong) { color: var(--cf-text); }
html[data-theme="dark"] #system-log-dialog :is(.system-log-heading p, .system-log-meta, .system-log-field, .system-log-detail b, .system-log-day-title, .system-log-empty, .system-log-icon) { color: var(--cf-muted); }
html[data-theme="dark"] #system-log-dialog .system-log-detail { color: var(--cf-text-2); }
html[data-theme="dark"] #system-log-dialog :is(.system-log-badge, .system-log-tabs, .system-log-before, .system-log-empty-icon) { background-color: var(--cf-chip); }
html[data-theme="dark"] #system-log-dialog .system-log-badge { color: #a5b4fc; }
html[data-theme="dark"] #system-log-dialog :is(.system-log-target, .system-log-expand) { color: #a5b4fc; }
html[data-theme="dark"] #system-log-dialog [role=tab][aria-selected=true] { background: var(--cf-bg); color: var(--cf-text); }
html[data-theme="dark"] #system-log-dialog :is(.system-log-filter, .system-log-more button) { border-color: var(--cf-line-strong); background: transparent; color: var(--cf-text-2); }
html[data-theme="dark"] #system-log-dialog .system-log-filter[aria-pressed=true] { border-color: #b45309; background: #451a03; color: #fcd34d; }
html[data-theme="dark"] #system-log-dialog :is(.system-log-icon:hover, .system-log-card:hover, .system-log-more button:hover) { background: var(--cf-hover); }
html[data-theme="dark"] #system-log-dialog :is(.system-log-body, footer) { border-color: var(--cf-line); }
html[data-theme="dark"] #system-log-dialog .system-log-day-title { background: linear-gradient(var(--cf-bg) 75%, transparent); }
html[data-theme="dark"] #system-log-dialog .system-log-item::before { background: var(--cf-line); }
html[data-theme="dark"] #system-log-dialog .system-log-item::after { box-shadow: 0 0 0 3px var(--cf-bg); }
html[data-theme="dark"] #system-log-dialog [data-level=warn] .system-log-card { background: #422006; }
html[data-theme="dark"] #system-log-dialog [data-level=error] .system-log-card { background: #450a0a; }
html[data-theme="dark"] #system-log-dialog .system-log-error { color: #fca5a5; }
html[data-theme="dark"] #system-log-dialog .system-log-after { background: #052e16; color: #86efac; }
html[data-theme="dark"] #system-log-dialog .system-log-skeleton-row { background-image: linear-gradient(90deg, var(--cf-chip) 25%, var(--cf-hover) 50%, var(--cf-chip) 75%); }
html[data-theme="dark"] .system-log-entry { color: var(--cf-muted); }
html[data-theme="dark"] .system-log-entry:hover { background: var(--cf-hover); color: var(--cf-text); }