:root {
  --bg: #f5f6f8;
  --surface: #fff;
  --text: #1c2430;
  --muted: #6b7480;
  --border: #dde1e6;
  --accent: #2f6fa8;
  --ok: #1f8a4c;
  --bad: #c0392b;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
}
/* Светлая тема по умолчанию; тёмная — только по выбору пользователя (кнопка в шапке, cookie sga_theme) */
:root[data-theme="dark"] {
  --bg: #14181d;
  --surface: #1c2229;
  --text: #e4e8ed;
  --muted: #96a0ab;
  --border: #2e3640;
  --accent: #6aa7dc;
  --ok: #4cc283;
  --bad: #ef6b5d;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }

.topbar {
  display: flex; align-items: center; gap: 1.5rem;
  padding: .75rem 1rem; background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 600; color: var(--text); text-decoration: none; }
.nav { flex: 1; display: flex; gap: 1rem; }
.who { display: flex; align-items: center; gap: .75rem; color: var(--muted); font-size: .9rem; }
.who form { margin: 0; }

.page { max-width: 1100px; margin: 0 auto; padding: 1.5rem 1rem; }
.centered { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  padding: 1.25rem; margin-bottom: 1rem;
}
.login { width: 100%; max-width: 340px; display: grid; gap: .9rem; }
.login h1 { margin: 0; text-align: center; }

label { display: grid; gap: .3rem; font-size: .9rem; color: var(--muted); }
input {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 6px; padding: .55rem .65rem;
}
input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
button {
  font: inherit; cursor: pointer; border: 0; border-radius: 6px;
  padding: .6rem 1rem; background: var(--accent); color: #fff;
}
button.link { background: none; color: var(--accent); padding: 0; }

.error { margin: 0; color: var(--bad); }
.badge { white-space: nowrap; display: inline-block; padding: .1rem .5rem; border-radius: 999px; font-size: .85rem; border: 1px solid currentColor; }
.badge.ok { color: var(--ok); }
.badge.bad { color: var(--bad); }
.badge.muted { color: var(--muted); }

/* --- Этап 2: навигация, плитки, таблицы, график --- */
:root {
  --c-delivered: #0ca30c;
  --c-inflight: #2a78d6;
  --c-failed: #d03b3b;
  --warn: #b07800;
  --grid: #e8ebee;
}
:root[data-theme="dark"] { --c-inflight: #3987e5; --warn: #fab219; --grid: #2a3139; }
.nav { flex-wrap: wrap; column-gap: 1rem; row-gap: .25rem; }
.nav a { white-space: nowrap; color: var(--muted); text-decoration: none; padding: .25rem 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--text); }
.nav a[aria-current="page"] { color: var(--text); border-bottom-color: var(--accent); }
a { color: var(--accent); }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.nowrap { white-space: nowrap; }
.notice { border-left: 3px solid var(--accent); }
.more { margin: .75rem 0 0; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1rem 1.25rem; display: grid; gap: .25rem; }
.tile-label { color: var(--muted); font-size: .9rem; }
.tile-value { font-size: 1.9rem; font-weight: 600; font-variant-numeric: tabular-nums; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th { text-align: left; font-weight: 500; color: var(--muted); border-bottom: 1px solid var(--border); padding: .45rem .5rem; }
.table td { border-bottom: 1px solid var(--border); padding: .45rem .5rem; vertical-align: top; }
.table tr:last-child td { border-bottom: 0; }
.num, .table .num { text-align: right; font-variant-numeric: tabular-nums; }
td.text { max-width: 28rem; color: var(--muted); }
.state.st-delivered { color: var(--ok); }
.state.st-failed { color: var(--bad); }
.badge.warn { color: var(--warn); }

.filters { display: flex; flex-wrap: wrap; gap: .75rem; align-items: end; margin-bottom: .75rem; }
.filters label { min-width: 9rem; }
.filter-actions { display: flex; gap: .75rem; align-items: center; }
select { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: .5rem .6rem; }
.pager { display: flex; gap: 1rem; justify-content: center; margin: 1rem 0; }

.segmented { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-bottom: 1rem; }
.segmented a { padding: .4rem .9rem; text-decoration: none; color: var(--muted); background: var(--surface); }
.segmented a[aria-current="page"] { color: #fff; background: var(--accent); }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 1rem; }
.grid-2 .card { margin-bottom: 0; }
.grid-2 + .card { margin-top: 1rem; }

.device-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 1rem; margin-bottom: .75rem; }
.device-head h2 { margin: 0 0 .2rem; }
.device-link { display: grid; gap: .2rem; justify-items: end; }
.inline-form summary { cursor: pointer; color: var(--accent); }
.inline-form form { display: grid; gap: .5rem; margin-top: .5rem; min-width: 14rem; }
form.inline { display: inline; margin-left: .5rem; }
ul.plain { list-style: none; padding: 0; margin: 0; display: grid; gap: .35rem; }

.chart { margin: 0; }
.chart svg { width: 100%; height: auto; display: block; }
.legend { display: flex; gap: 1rem; flex-wrap: wrap; font-size: .85rem; color: var(--muted); margin-bottom: .5rem; }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: .35rem; vertical-align: -1px; }
.s-delivered { fill: var(--c-delivered); background: var(--c-delivered); }
.s-inflight { fill: var(--c-inflight); background: var(--c-inflight); }
.s-failed { fill: var(--c-failed); background: var(--c-failed); }
.chart .grid { stroke: var(--grid); stroke-width: 1; }
.chart .baseline { stroke: var(--border); stroke-width: 1; }
.chart .axis { fill: var(--muted); font-size: 11px; }
.chart .hit { fill: transparent; }
.chart .bar:hover .hit { fill: var(--grid); opacity: .5; }
.chart .empty { padding: 2rem 0; text-align: center; }
details > summary { cursor: pointer; color: var(--accent); margin-top: .75rem; }

@media (max-width: 640px) {
  .topbar { flex-wrap: wrap; gap: .5rem 1rem; }
  .nav { order: 3; flex-basis: 100%; overflow-x: auto; }
  .device-link { justify-items: start; }
  .grid-2 { grid-template-columns: 1fr; }
  /* Широкие таблицы прокручиваются внутри карточки, страница не уезжает вбок */
  .table { display: block; overflow-x: auto; white-space: nowrap; }
  .chart .axis { font-size: 22px; }
}

/* --- Этапы 3–4: проблемы, настройки аккаунта --- */
.alerts { list-style: none; padding: 0; margin: 0; display: grid; gap: .6rem; }
.alerts li { display: flex; gap: .6rem; align-items: flex-start; }
.alert-icon { flex: none; display: inline-grid; place-items: center; width: 1.3rem; height: 1.3rem; border-radius: 50%;
  font-weight: 700; font-size: .8rem; color: #fff; background: var(--bad); }
.alert-icon.ok { background: var(--ok); }
.ok-line { display: flex; gap: .6rem; align-items: center; margin: 0; }
.error-card { border-left: 3px solid var(--bad); color: var(--bad); }
.settings { display: grid; gap: 1rem; }
.settings fieldset { border: 1px solid var(--border); border-radius: 8px; padding: .75rem 1rem; display: flex; flex-wrap: wrap; gap: .75rem; align-items: end; }
.settings legend { padding: 0 .35rem; color: var(--text); font-weight: 500; }
.settings input[type=number] { width: 8rem; }
label.check { display: flex; gap: .5rem; align-items: center; color: var(--text); }
pre.raw { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: .75rem; overflow-x: auto; font-size: .85rem; }

/* --- Этапы 5–6: филиалы, источники, подключение телефона, профиль --- */
tr.inactive td { opacity: .55; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; background: var(--bg); padding: .05rem .3rem; border-radius: 4px; }
code.secret { font-size: 1.05rem; user-select: all; }
button.danger { color: var(--bad); }
.who-link { color: var(--muted); text-decoration: none; }
.who-link:hover { color: var(--text); }
.inline-block { display: inline-block; margin: 0 .5rem .5rem 0; }
.code-box { display: grid; gap: .2rem; justify-items: start; border: 1px solid var(--border); border-radius: 8px; padding: .75rem 1rem; margin: .5rem 0 1rem; }
.code { font-size: 2rem; letter-spacing: .15em; font-variant-numeric: tabular-nums; }
.settings.narrow { max-width: 22rem; }

/* Переключатель темы */
.theme-toggle { background: none; color: var(--muted); border: 1px solid var(--border); border-radius: 999px;
  padding: .2rem .65rem; font-size: .85rem; line-height: 1.4; }
.theme-toggle:hover { color: var(--text); }
.theme-toggle-float { position: fixed; top: 1rem; right: 1rem; }