/* ЭнергоКонтроль 74 — оформление в стиле Telegram.
   Палитра, скругления, плотность и типографика взяты из визуального языка
   Telegram Desktop / Web A. Светлая и тёмная темы переключаются вручную и
   по системной настройке. */

:root {
  --tg-accent: #3390ec;
  --tg-accent-hover: #2b7fd4;
  --tg-accent-soft: rgba(51, 144, 236, 0.12);
  --tg-bg: #ffffff;
  --tg-bg-secondary: #f4f4f5;
  --tg-bg-elevated: #ffffff;
  --tg-header: #ffffff;
  --tg-text: #000000;
  --tg-text-secondary: #707579;
  --tg-border: #e6e6e8;
  --tg-green: #4dcd5e;
  --tg-red: #e53935;
  --tg-orange: #f5a623;
  --tg-shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 4px 12px rgba(16, 24, 40, 0.06);
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-pill: 999px;
}

[data-theme="dark"] {
  --tg-accent: #8774e1;
  --tg-accent-hover: #7a68d4;
  --tg-accent-soft: rgba(135, 116, 225, 0.18);
  --tg-bg: #212121;
  --tg-bg-secondary: #181818;
  --tg-bg-elevated: #2c2c2c;
  --tg-header: #212121;
  --tg-text: #ffffff;
  --tg-text-secondary: #aaaaaa;
  --tg-border: #3a3a3a;
  --tg-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.3);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
               "Noto Sans", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.45;
  background: var(--tg-bg-secondary);
  color: var(--tg-text);
  -webkit-font-smoothing: antialiased;
}

button, input, select { font: inherit; }

/* ---------------------------------------------------------------- вход */

.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--tg-bg-elevated);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--tg-shadow);
  text-align: center;
}

.login-logo {
  width: 84px; height: 84px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--tg-accent);
  display: grid; place-items: center;
  font-size: 38px;
}

.login-card h1 { font-size: 21px; margin: 0 0 6px; }
.login-card p.hint { color: var(--tg-text-secondary); margin: 0 0 24px; font-size: 14px; }

.field { text-align: left; margin-bottom: 14px; }
.field label {
  display: block; font-size: 13px; color: var(--tg-text-secondary); margin-bottom: 6px;
}

input[type="text"], input[type="email"], input[type="password"],
input[type="date"], input[type="number"], select {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--tg-border);
  border-radius: var(--radius-md);
  background: var(--tg-bg);
  color: var(--tg-text);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

input:focus, select:focus {
  border-color: var(--tg-accent);
  box-shadow: 0 0 0 3px var(--tg-accent-soft);
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--tg-accent);
  color: #fff;
  cursor: pointer;
  font-weight: 500;
  transition: background .15s, transform .05s;
}
.btn:hover { background: var(--tg-accent-hover); }
.btn:active { transform: scale(.985); }
.btn:disabled { opacity: .55; cursor: default; }
.btn-block { width: 100%; }
.btn-ghost {
  background: transparent; color: var(--tg-accent);
  border: 1px solid var(--tg-border);
}
.btn-ghost:hover { background: var(--tg-accent-soft); }
.btn-sm { padding: 7px 14px; font-size: 14px; border-radius: var(--radius-sm); }

.error-box {
  background: rgba(229, 57, 53, .1);
  color: var(--tg-red);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 14px;
  margin-bottom: 14px;
}

/* ---------------------------------------------------------------- каркас */

.app { display: none; min-height: 100vh; }
.app.visible { display: block; }

.topbar {
  position: sticky; top: 0; z-index: 20;
  height: 56px;
  display: flex; align-items: center; gap: 14px;
  padding: 0 18px;
  background: var(--tg-header);
  border-bottom: 1px solid var(--tg-border);
}
.topbar .brand { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.topbar .brand .dot {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--tg-accent); display: grid; place-items: center; font-size: 15px;
}
.topbar .spacer { flex: 1; }
.topbar .user { color: var(--tg-text-secondary); font-size: 14px; }

.icon-btn {
  width: 36px; height: 36px;
  border: none; border-radius: 50%;
  background: transparent; color: var(--tg-text-secondary);
  cursor: pointer; display: grid; place-items: center; font-size: 17px;
}
.icon-btn:hover { background: var(--tg-bg-secondary); color: var(--tg-text); }

.tabs {
  display: flex; gap: 6px; padding: 12px 18px 0;
  overflow-x: auto; scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  border: none; background: transparent;
  color: var(--tg-text-secondary);
  padding: 8px 16px; border-radius: var(--radius-pill);
  cursor: pointer; white-space: nowrap; font-weight: 500;
}
.tab:hover { background: var(--tg-bg); color: var(--tg-text); }
.tab.active { background: var(--tg-accent); color: #fff; }

.content { padding: 16px 18px 40px; max-width: 1280px; margin: 0 auto; }
.page { display: none; }
.page.active { display: block; }

/* ---------------------------------------------------------------- карточки */

.card {
  background: var(--tg-bg-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--tg-shadow);
  padding: 18px 20px;
  margin-bottom: 16px;
}
.card h2 { font-size: 16px; margin: 0 0 14px; }
.card h2 .count { color: var(--tg-text-secondary); font-weight: 400; font-size: 14px; }

.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

.stat { background: var(--tg-bg-elevated); border-radius: var(--radius-lg);
        box-shadow: var(--tg-shadow); padding: 16px 18px; }
.stat .label { color: var(--tg-text-secondary); font-size: 13px; margin-bottom: 4px; }
.stat .value { font-size: 25px; font-weight: 600; letter-spacing: -.4px; }
.stat .sub   { color: var(--tg-text-secondary); font-size: 12px; margin-top: 3px; }

/* ---------------------------------------------------------------- списки и таблицы */

.list-row {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 12px; border-radius: var(--radius-md);
  cursor: pointer; transition: background .12s;
}
.list-row:hover { background: var(--tg-bg-secondary); }
.list-row .avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--tg-accent-soft); color: var(--tg-accent);
  display: grid; place-items: center; font-weight: 600; flex-shrink: 0;
}
.list-row .body { flex: 1; min-width: 0; }
.list-row .title { font-weight: 500; }
.list-row .subtitle {
  color: var(--tg-text-secondary); font-size: 13px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.table-wrap { overflow-x: auto; border-radius: var(--radius-md); }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; white-space: nowrap; }
table.data th, table.data td {
  padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--tg-border);
}
table.data th {
  color: var(--tg-text-secondary); font-weight: 500; font-size: 13px;
  position: sticky; top: 0; background: var(--tg-bg-elevated);
}
table.data tr:last-child td { border-bottom: none; }
table.data td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.data tr.total td { font-weight: 600; background: var(--tg-bg-secondary); }

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: var(--radius-pill);
  font-size: 12px; font-weight: 500;
  background: var(--tg-bg-secondary); color: var(--tg-text-secondary);
}
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge.online     { background: rgba(77,205,94,.14);  color: #2f9e42; }
.badge.offline    { background: rgba(229,57,53,.12);  color: var(--tg-red); }
.badge.stale,
.badge.archive_gap,
.badge.poll_error { background: rgba(245,166,35,.15); color: #c97f10; }
.badge.device_error { background: rgba(229,57,53,.12); color: var(--tg-red); }

.empty { text-align: center; color: var(--tg-text-secondary); padding: 32px 12px; }
.empty .ico { font-size: 40px; opacity: .5; display: block; margin-bottom: 10px; }

.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; margin-bottom: 14px; }
.toolbar .field { margin: 0; min-width: 165px; }

.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%) translateY(80px);
  background: rgba(0,0,0,.86); color: #fff;
  padding: 11px 20px; border-radius: var(--radius-pill);
  font-size: 14px; opacity: 0; transition: all .25s; pointer-events: none; z-index: 100;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.spinner {
  width: 17px; height: 17px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.35); border-top-color: #fff;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 640px) {
  .content { padding: 12px 12px 32px; }
  .card { padding: 15px 14px; }
  .topbar { padding: 0 12px; gap: 10px; }
  .topbar .user { display: none; }
}