/* Material 3 для всех экранов (расширение и сервер: копия server/public/m3.css — tests/ui.test.mjs сверяет).
   Цвета — роли M3 (primary, surface-container…), тёмная и светлая тема по системе. Значки — ui/msym.js. */
:root {
  color-scheme: light dark;
  --primary: #0b57d0; --on-primary: #fff; --primary-container: #d3e3fd; --on-primary-container: #041e49;
  --secondary-container: #c2e7ff; --on-secondary-container: #001d35;
  --surface: #f8fafd; --surface-1: #fff; --surface-2: #f0f4f9; --surface-3: #e9eef6; --on-surface: #1f1f1f;
  --on-surface-variant: #444746; --outline: #747775; --outline-variant: #c4c7c5;
  --error: #b3261e; --on-error: #fff; --error-container: #f9dedc; --on-error-container: #410e0b;
  --success: #146c2e; --success-container: #c4eed0; --on-success-container: #072711;
  --warn: #7a5900; --warn-container: #ffdf99; --on-warn-container: #261a00;
  --live: #d93025;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 1px 3px 1px rgba(0, 0, 0, .15);
  --radius: 16px;
  --font: "Google Sans Text", "Google Sans", Roboto, system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --primary: #a8c7fa; --on-primary: #062e6f; --primary-container: #0842a0; --on-primary-container: #d3e3fd;
    --secondary-container: #004a77; --on-secondary-container: #c2e7ff;
    --surface: #131314; --surface-1: #1b1b1c; --surface-2: #1e1f20; --surface-3: #282a2c; --on-surface: #e3e3e3;
    --on-surface-variant: #c4c7c5; --outline: #8e918f; --outline-variant: #444746;
    --error: #f2b8b5; --on-error: #601410; --error-container: #8c1d18; --on-error-container: #f9dedc;
    --success: #6dd58c; --success-container: #0f5223; --on-success-container: #c4eed0;
    --warn: #ffdf99; --warn-container: #5c4300; --on-warn-container: #ffdf99;
    --live: #ff6b5e;
    --shadow: 0 1px 3px rgba(0, 0, 0, .5), 0 4px 8px 3px rgba(0, 0, 0, .25);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--surface); color: var(--on-surface); font: 14px/20px var(--font); -webkit-font-smoothing: antialiased; }
h1, h2, h3 { margin: 0; font-weight: 500; }
h1 { font-size: 22px; line-height: 28px; }
h2 { font-size: 16px; line-height: 24px; }
h3 { font-size: 14px; line-height: 20px; letter-spacing: .1px; }
.muted { color: var(--on-surface-variant); }
.small { font-size: 12px; line-height: 16px; letter-spacing: .4px; }
.hidden { display: none !important; }
.row { display: flex; align-items: center; gap: 8px; }
.row.wrap { flex-wrap: wrap; }
.spacer { flex: 1; }
.stack { display: grid; gap: 12px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 640px) { .grid3, .grid4 { grid-template-columns: 1fr 1fr; } }

/* значок */
svg.ms { fill: currentColor; flex: none; vertical-align: middle; }

/* верхняя панель */
.appbar { display: flex; align-items: center; gap: 12px; min-height: 56px; }
.appbar .title { display: flex; align-items: center; gap: 10px; font-size: 20px; line-height: 28px; font-weight: 500; }
.appbar .logo { width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; background: var(--primary-container); color: var(--on-primary-container); }

/* карточка */
.card { background: var(--surface-2); border-radius: var(--radius); padding: 16px; }
.card.elevated { background: var(--surface-1); box-shadow: var(--shadow); }
.card.outlined { background: transparent; border: 1px solid var(--outline-variant); }
.card > h2 { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.card > h2 .spacer + * { font-weight: 400; }

/* кнопки */
.btn {
  font: 500 14px/20px var(--font); letter-spacing: .1px; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 24px; border-radius: 20px; border: none; cursor: pointer; position: relative; overflow: hidden;
  background: var(--primary); color: var(--on-primary); white-space: nowrap;
}
.btn svg.ms { margin-left: -8px; }
.btn::after { content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0; transition: opacity .15s; }
.btn:hover::after { opacity: .08; }
.btn:active::after { opacity: .12; }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn:disabled { background: color-mix(in srgb, var(--on-surface) 12%, transparent); color: color-mix(in srgb, var(--on-surface) 38%, transparent); cursor: default; box-shadow: none; }
.btn:disabled::after { display: none; }
.btn.tonal { background: var(--secondary-container); color: var(--on-secondary-container); }
.btn.outlined { background: transparent; color: var(--primary); border: 1px solid var(--outline); }
.btn.text { background: transparent; color: var(--primary); padding: 0 12px; }
.btn.danger { background: var(--error); color: var(--on-error); }
.btn.danger.tonal { background: var(--error-container); color: var(--on-error-container); }
.btn.big { height: 56px; border-radius: 28px; font-size: 16px; padding: 0 32px; width: 100%; }
.btn.small { height: 32px; padding: 0 16px; font-size: 13px; }
.iconbtn { width: 40px; height: 40px; border-radius: 20px; border: none; background: transparent; color: var(--on-surface-variant); display: grid; place-items: center; cursor: pointer; position: relative; }
.iconbtn:hover { background: color-mix(in srgb, var(--on-surface) 8%, transparent); }
.iconbtn.tonal { background: var(--surface-3); color: var(--on-surface); }

/* поле ввода с подписью (outlined text field) */
.field { position: relative; display: block; }
.field input, .field select {
  font: 16px/24px var(--font); width: 100%; height: 56px; padding: 16px 16px 0; border-radius: 8px;
  border: 1px solid var(--outline); background: transparent; color: var(--on-surface); outline: none; appearance: none;
}
.field select { padding-right: 40px; }
.field .arrow { position: absolute; right: 12px; top: 18px; pointer-events: none; color: var(--on-surface-variant); }
.field > span { position: absolute; left: 16px; top: 8px; font-size: 12px; line-height: 16px; color: var(--on-surface-variant); pointer-events: none; }
.field input:focus, .field select:focus { border: 2px solid var(--primary); padding-left: 15px; }
.field input:focus + span, .field select:focus + span { color: var(--primary); }
.field .lead { position: absolute; left: 12px; top: 18px; color: var(--on-surface-variant); }
.field.has-lead input { padding-left: 44px; }
.field.has-lead > span { left: 44px; }
.field .trail { position: absolute; right: 12px; top: 18px; }
.supporting { font-size: 12px; line-height: 16px; color: var(--on-surface-variant); padding: 4px 16px 0; }

/* переключатель */
.switch { display: flex; align-items: center; gap: 12px; cursor: pointer; min-height: 40px; }
.switch input { appearance: none; width: 52px; height: 32px; border-radius: 16px; background: var(--surface-3); border: 2px solid var(--outline); position: relative; cursor: pointer; flex: none; margin: 0; transition: background .15s; }
.switch input::after { content: ""; position: absolute; top: 6px; left: 6px; width: 16px; height: 16px; border-radius: 8px; background: var(--outline); transition: all .15s; }
.switch input:checked { background: var(--primary); border-color: var(--primary); }
.switch input:checked::after { left: 22px; top: 2px; width: 24px; height: 24px; border-radius: 12px; background: var(--on-primary); }

/* чипы и статусы */
.chip { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; border-radius: 8px; border: 1px solid var(--outline-variant); color: var(--on-surface-variant); font-size: 13px; white-space: nowrap; background: transparent; }
.chip b { color: var(--on-surface); font-weight: 500; }
.badge { display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 12px; border-radius: 14px; font-size: 13px; font-weight: 500; white-space: nowrap; }
.badge.ok { background: var(--success-container); color: var(--on-success-container); }
.badge.warn { background: var(--warn-container); color: var(--on-warn-container); }
.badge.err { background: var(--error-container); color: var(--on-error-container); }
.badge.live { background: var(--live); color: #fff; }
.badge.info { background: var(--secondary-container); color: var(--on-secondary-container); }
.badge.neutral { background: var(--surface-3); color: var(--on-surface-variant); }
.dot { width: 8px; height: 8px; border-radius: 4px; background: var(--outline); flex: none; }
.dot.live { background: var(--live); animation: pulse 1.2s infinite; }
.dot.ok { background: var(--success); }
.dot.warn { background: var(--warn); }
.dot.err { background: var(--error); }
@keyframes pulse { 50% { opacity: .3; } }

/* плитка-счётчик */
.stat { background: var(--surface-2); border-radius: var(--radius); padding: 12px 16px; display: grid; gap: 4px; }
.stat .v { font-size: 28px; line-height: 36px; font-weight: 500; font-variant-numeric: tabular-nums; }
.stat .k { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--on-surface-variant); }

/* полоска прогресса */
.progress { height: 4px; border-radius: 2px; background: var(--surface-3); overflow: hidden; }
.progress > i { display: block; height: 100%; background: var(--primary); border-radius: 2px; transition: width .3s; }
.progress > i.ok { background: var(--success); } .progress > i.warn { background: var(--warn); } .progress > i.err { background: var(--error); }

/* список */
.list { display: grid; }
.item { display: flex; align-items: center; gap: 16px; min-height: 56px; padding: 8px 0; }
.item + .item { border-top: 1px solid var(--outline-variant); }
.item .lead { width: 40px; height: 40px; border-radius: 20px; display: grid; place-items: center; background: var(--surface-3); color: var(--on-surface-variant); flex: none; }
.item .lead.ok { background: var(--success-container); color: var(--on-success-container); }
.item .lead.err { background: var(--error-container); color: var(--on-error-container); }
.item .lead.warn { background: var(--warn-container); color: var(--on-warn-container); }
.item .body { flex: 1; min-width: 0; display: grid; }
.item .body .t { font-size: 16px; line-height: 24px; }
.item .body .s { font-size: 14px; line-height: 20px; color: var(--on-surface-variant); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* баннер «что не так» */
.banner { display: flex; gap: 12px; align-items: flex-start; padding: 12px 16px; border-radius: 12px; background: var(--warn-container); color: var(--on-warn-container); }
.banner.err { background: var(--error-container); color: var(--on-error-container); }
.banner.info { background: var(--secondary-container); color: var(--on-secondary-container); }
.banner .body { flex: 1; display: grid; gap: 2px; }
.snack { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--on-surface); color: var(--surface); padding: 14px 16px; border-radius: 4px; box-shadow: var(--shadow); font-size: 14px; max-width: min(560px, calc(100% - 32px)); }

/* текстовая область */
textarea.area { font: 14px/20px var(--font); width: 100%; padding: 12px 16px; border-radius: 8px; border: 1px solid var(--outline); background: transparent; color: var(--on-surface); resize: vertical; outline: none; }
textarea.area:focus { border: 2px solid var(--primary); padding: 11px 15px; }