:root {
  --bg: #f5f4f0; --panel: #ffffff; --panel-2: #f0eee8; --line: #dedad0; --text: #1d1c1a; --muted: #6d6a62;
  --accent: #c96442; --accent-text: #ffffff; --ok: #2f8a4c; --warn: #b7791f; --bad: #c0392b; --info: #2f6fb3;
  --r-speaker: #c96442; --r-receiver: #8a6d3b; --r-bluetooth: #2f6fb3; --r-wired: #6b4fa0; --r-usb: #3b8a8a; --r-other: #888; --r-unknown: #bbb;
  --radius: 12px; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #161614; --panel: #1f1e1c; --panel-2: #272623; --line: #3a3833; --text: #ecebe6; --muted: #a29f96;
    --r-unknown: #555; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--accent); }
.hidden { display: none !important; }

/* Sign-in */
.login { min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; padding: 24px 16px;
  background: radial-gradient(1200px 600px at 50% -10%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 60%), var(--bg); }
.login-card { width: min(400px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 32px 28px 24px;
  box-shadow: 0 1px 2px rgba(0,0,0,.06), 0 12px 32px rgba(0,0,0,.12); display: flex; flex-direction: column; gap: 18px; }
.login-brand { display: flex; align-items: center; gap: 14px; }
.login-brand h1 { margin: 0; font-size: 20px; line-height: 1.2; letter-spacing: -.01em; }
.login-brand p { margin: 2px 0 0; color: var(--muted); font-size: 14px; }
.logo-mark { width: 48px; height: 48px; flex: none; }
.logo-mark .logo-bg { fill: var(--accent); }
.logo-mark .logo-wave { stroke: var(--accent-text); stroke-width: 3; stroke-linecap: round; }
.btn { border: 1px solid var(--line); background: var(--panel-2); border-radius: 10px; padding: 9px 14px; text-decoration: none; color: var(--text); }
.btn:hover { border-color: var(--muted); }
.btn:focus-visible, .login-form input:focus-visible, details.backup summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn:disabled { opacity: .6; cursor: progress; }
.btn.block { display: flex; width: 100%; align-items: center; justify-content: center; gap: 10px; padding: 12px 16px; font-weight: 600; font-size: 15px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.primary:hover { filter: brightness(1.06); border-color: var(--accent); }
.btn.secondary { background: var(--panel-2); }
.btn.small { padding: 5px 10px; font-size: 13px; }
.provider-mark { width: 20px; height: 20px; flex: none; }
.provider-mark .gl-1 { fill: #e24329; } .provider-mark .gl-2 { fill: #fc6d26; } .provider-mark .gl-3 { fill: #fca326; }
.btn.primary .provider-mark { background: #fff; border-radius: 5px; padding: 2px; width: 24px; height: 24px; }
.divider { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--line); }
details.backup { border: 1px solid var(--line); border-radius: 12px; background: var(--bg); }
details.backup summary { list-style: none; display: flex; justify-content: space-between; align-items: center; padding: 12px 14px; cursor: pointer; font-weight: 600; font-size: 14px; border-radius: 12px; }
details.backup summary::-webkit-details-marker { display: none; }
details.backup .chevron { color: var(--muted); font-size: 20px; line-height: 1; transition: transform .15s ease; }
details.backup[open] .chevron { transform: rotate(90deg); }
details.backup .hint { margin: 0 14px; color: var(--muted); font-size: 13px; }
.login-form { display: flex; flex-direction: column; gap: 12px; padding: 12px 14px 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; color: var(--muted); font-weight: 600; }
.login-form input { padding: 11px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); font-size: 16px; }
.alert { border: 1px solid color-mix(in srgb, var(--bad) 45%, transparent); background: color-mix(in srgb, var(--bad) 10%, transparent);
  color: var(--bad); border-radius: 10px; padding: 10px 12px; font-size: 14px; }
.login-foot { margin: 0; color: var(--muted); font-size: 12.5px; text-align: center; }
@media (max-width: 440px) { .login-card { padding: 24px 18px 18px; border-radius: 16px; } }

/* Shell */
header.top { position: sticky; top: 0; z-index: 2; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding: 12px 20px;
  background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
header.top h1 { font-size: 18px; margin: 0 12px 0 0; white-space: nowrap; }
.tabs, .ranges { display: flex; flex-wrap: wrap; max-width: 100%; gap: 4px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 3px; }
.tabs button, .ranges button { border: 0; background: transparent; padding: 6px 12px; border-radius: 8px; }
.tabs button[aria-pressed="true"], .ranges button[aria-pressed="true"] { background: var(--panel); box-shadow: 0 1px 2px rgba(0,0,0,.15); font-weight: 600; }
.spacer { flex: 1; }
.who { color: var(--muted); font-size: 13px; }
label.toggle { display: inline-flex; gap: 6px; align-items: center; font-size: 13px; color: var(--muted); }
section.view { padding: 20px; max-width: 1400px; margin: 0 auto; }
.notice { background: var(--panel); border: 1px solid var(--line); border-left: 4px solid var(--info); border-radius: var(--radius); padding: 12px 16px; margin-bottom: 16px; color: var(--muted); }
.notice.warn { border-left-color: var(--warn); }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.card .label { color: var(--muted); font-size: 13px; }
.card .value { font-size: 28px; font-weight: 650; margin-top: 2px; }
.card.bad .value { color: var(--bad); }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 16px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; overflow: hidden; }
.panel h2 { font-size: 15px; margin: 0 0 10px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.panel-head h2 { margin: 0; }
.panel-head + .kv { margin-top: 10px; }
.empty { color: var(--muted); padding: 24px; text-align: center; }
.pager { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.panel > .pager { margin-top: 10px; justify-content: flex-end; }
.section-links { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 12px; }
#device-events, #device-reports { scroll-margin-top: 72px; }

/* Tables */
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; white-space: nowrap; }
tbody tr.clickable { cursor: pointer; }
tbody tr.clickable:hover { background: var(--panel-2); }
td.mono, .mono { font-family: var(--mono); font-size: 12.5px; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.filters input, .filters select { padding: 7px 10px; border-radius: 9px; border: 1px solid var(--line); background: var(--panel); min-width: 160px; }
.service-log-filters { align-items: flex-end; }
.service-log-filters .field { flex: 1 1 170px; min-width: 0; }
.service-log-filters input, .service-log-filters select { width: 100%; min-width: 0; }
.service-log-data { max-width: 36rem; max-height: 20rem; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; font-family: var(--mono); font-size: 12.5px; }

/* Chips */
.chip { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; border: 1px solid var(--line); margin: 1px 4px 1px 0; white-space: nowrap; }
.chip.bad { border-color: var(--bad); color: var(--bad); }
.chip.ok { border-color: var(--ok); color: var(--ok); }
.chip.warn { border-color: var(--warn); color: var(--warn); }
.app-log-message { white-space: pre-wrap; overflow-wrap: anywhere; }
.chip.route-speaker { border-color: var(--r-speaker); color: var(--r-speaker); }
.chip.route-bluetooth { border-color: var(--r-bluetooth); color: var(--r-bluetooth); }
.chip.route-receiver { border-color: var(--r-receiver); color: var(--r-receiver); }
.chip.route-wired { border-color: var(--r-wired); color: var(--r-wired); }

/* Charts */
.chart { width: 100%; height: auto; display: block; }
.chart .axis { stroke: var(--line); stroke-width: 1; }
.chart .tick { fill: var(--muted); font-size: 11px; }
.chart .l-input { stroke: var(--info); fill: none; stroke-width: 1.8; }
.chart .l-output { stroke: var(--accent); fill: none; stroke-width: 1.8; }
.chart .l-loss { stroke: var(--bad); fill: none; stroke-width: 1.8; }
.chart .l-jitter { stroke: var(--warn); fill: none; stroke-width: 1.8; }
.chart .band-label { fill: var(--muted); font-size: 12px; }
.chart .b-speaker { fill: var(--r-speaker); } .chart .b-bluetooth { fill: var(--r-bluetooth); } .chart .b-receiver { fill: var(--r-receiver); }
.chart .b-wired { fill: var(--r-wired); } .chart .b-usb { fill: var(--r-usb); } .chart .b-other { fill: var(--r-other); } .chart .b-unknown { fill: var(--r-unknown); }
.chart .b-active { fill: var(--ok); } .chart .b-inactive, .chart .b-background { fill: var(--warn); } .chart .b-muted { fill: var(--bad); } .chart .b-unmuted { fill: var(--ok); }
.chart .b-callkit, .chart .b-telecom { fill: var(--ok); } .chart .b-none { fill: var(--r-unknown); }
.chart .b-error { fill: var(--bad); } .chart .b-starting, .chart .b-held { fill: var(--warn); } .chart .b-unavailable { fill: var(--r-unknown); }
.legend { display: flex; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--muted); margin-top: 6px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: -1px; }
.legend .k-input { background: var(--info); } .legend .k-output { background: var(--accent); } .legend .k-loss { background: var(--bad); } .legend .k-jitter { background: var(--warn); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
@media (max-width: 640px) { header.top { padding: 10px 12px; } section.view { padding: 12px; } .grid2 { grid-template-columns: 1fr; } }