/* ============================================================
   WeatherHub — дашборд метеостанций ESP32
   Темы: auto (по системе) / dark «метео-центр» / light «метео-бюро»
   ============================================================ */

/* ---------- Токены тем ---------- */
:root {
  /* тёмная тема — по умолчанию (data-theme="dark" или system-dark при auto) */
  --bg: #0F172A;
  --bg-soft: #111B31;
  --card: #16213B;
  --card-border: #25324F;
  --text: #E6EDF7;
  --muted: #8FA3BF;
  --accent: #22D3EE;
  --accent-soft: rgba(34, 211, 238, .13);
  --grid: rgba(148, 163, 184, .16);
  --chip: #1B2743;
  --good: #4ADE80;
  --warn: #F87171;
  --shadow: 0 10px 30px rgba(2, 6, 23, .45);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

[data-theme="light"] {
  --bg: #EEF2F8;
  --bg-soft: #E4EAF3;
  --card: #FFFFFF;
  --card-border: #D9E1EE;
  --text: #0F1D33;
  --muted: #5B6B84;
  --accent: #0E7490;
  --accent-soft: rgba(14, 116, 144, .12);
  --grid: rgba(15, 29, 51, .08);
  --chip: #F3F6FB;
  --good: #16A34A;
  --warn: #DC2626;
  --shadow: 0 8px 24px rgba(15, 29, 51, .08);
}

/* auto: светлая тема, если тёмная не выбрана в системе */
@media (prefers-color-scheme: light) {
  [data-theme="auto"] {
    --bg: #EEF2F8;
    --bg-soft: #E4EAF3;
    --card: #FFFFFF;
    --card-border: #D9E1EE;
    --text: #0F1D33;
    --muted: #5B6B84;
    --accent: #0E7490;
    --accent-soft: rgba(14, 116, 144, .12);
    --grid: rgba(15, 29, 51, .08);
    --chip: #F3F6FB;
    --good: #16A34A;
    --warn: #DC2626;
    --shadow: 0 8px 24px rgba(15, 29, 51, .08);
  }
}

/* ---------- База ---------- */
* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(1200px 500px at 80% -10%, var(--accent-soft), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
}

body { transition: background .25s ease, color .25s ease; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .85rem;
}

/* ---------- Шапка ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 12px 20px;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-border);
}

.brand { display: flex; align-items: center; gap: 12px; }

.logo svg { width: 34px; height: 34px; display: block; }

.brand-text h1 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: .3px;
  font-weight: 700;
}

.tagline { font-size: .74rem; color: var(--muted); }

.controls {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.select-wrap select {
  appearance: none;
  padding: 8px 32px 8px 12px;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  background:
    linear-gradient(45deg, transparent 50%, var(--muted) 50%) calc(100% - 16px) 55% / 5px 5px no-repeat,
    linear-gradient(135deg, var(--muted) 50%, transparent 50%) calc(100% - 11px) 55% / 5px 5px no-repeat,
    var(--card);
  color: var(--text);
  font: inherit;
  font-size: .86rem;
  max-width: 240px;
  cursor: pointer;
}

.select-wrap select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

/* сегментные переключатели */
.seg {
  display: inline-flex;
  padding: 3px;
  gap: 2px;
  background: var(--chip);
  border: 1px solid var(--card-border);
  border-radius: 10px;
}

.seg button {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: .8rem;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: color .15s, background .15s;
}

.seg button:hover { color: var(--text); }

.seg button.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 35%, transparent);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  background: var(--card);
  color: var(--muted);
  cursor: pointer;
  transition: color .15s, border-color .15s, transform .15s;
}

.icon-btn:hover { color: var(--accent); border-color: var(--accent); }
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn.spin svg { animation: spin .8s linear infinite; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Полоса станций ---------- */
.stations {
  display: flex;
  gap: 10px;
  padding: 14px 20px 2px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.station-chip {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border: 1px solid var(--card-border);
  border-radius: 12px;
  background: var(--card);
  cursor: pointer;
  transition: border-color .15s, transform .15s;
}

.station-chip:hover { border-color: var(--accent); transform: translateY(-1px); }

.station-chip.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset;
}

.station-chip .name { font-weight: 600; font-size: .86rem; }
.station-chip .loc { color: var(--muted); font-size: .76rem; }
.station-chip .temp { font-size: .9rem; font-weight: 700; color: var(--accent); }

.dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--muted);
  flex: 0 0 auto;
}

.dot.online { background: var(--good); box-shadow: 0 0 8px var(--good); }
.dot.offline { background: var(--warn); }

/* ---------- Сетка ---------- */
.layout {
  max-width: 1280px;
  margin: 0 auto;
  padding: 10px 20px 40px;
}

.section-title {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 22px 4px 12px;
}

/* ---------- Карточки показателей ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 14px;
}

.card {
  --c: var(--accent);
  position: relative;
  padding: 14px 16px 12px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform .15s ease, border-color .15s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--c);
  opacity: .9;
}

.card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--c) 45%, var(--card-border)); }

.card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: .78rem;
}

.card-head .card-icon { display: inline-flex; color: var(--c); }
.card-head .card-icon svg { width: 17px; height: 17px; }

.badge {
  margin-left: auto;
  font-size: .62rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  color: var(--muted);
}

.card-value {
  margin-top: 8px;
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--c);
  font-variant-numeric: tabular-nums;
}

.card-value .unit {
  font-size: .95rem;
  font-weight: 600;
  color: var(--muted);
  margin-left: 4px;
}

.card-meta {
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .74rem;
  color: var(--muted);
}

.delta { display: inline-flex; align-items: center; gap: 3px; font-variant-numeric: tabular-nums; }
.delta.up { color: var(--good); }
.delta.down { color: var(--warn); }
.delta svg { width: 11px; height: 11px; }

/* ---------- Графики ---------- */
.charts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 16px;
}

.chart-card {
  --c: var(--accent);
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 14px 16px 10px;
}

.chart-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.chart-title { font-weight: 700; font-size: .95rem; color: var(--c); }
.chart-sub { font-size: .74rem; color: var(--muted); }

.chart-wrap { position: relative; height: 240px; }

/* ---------- Пустое состояние ---------- */
.empty {
  margin: 30px auto;
  max-width: 560px;
  text-align: center;
  padding: 34px 26px;
  background: var(--card);
  border: 1px dashed var(--card-border);
  border-radius: 18px;
  color: var(--muted);
}

.empty h3 { margin: 0 0 10px; color: var(--text); }
.empty code {
  display: inline-block;
  margin-top: 12px;
  padding: 8px 14px;
  background: var(--chip);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--accent);
}

/* ---------- Подвал ---------- */
.foot {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 20px 26px;
  color: var(--muted);
  font-size: .78rem;
}

.foot a { color: var(--accent); text-decoration: none; }
.foot a:hover { text-decoration: underline; }

/* ---------- Тост об ошибках ---------- */
.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 50;
  max-width: 340px;
  padding: 12px 16px;
  background: var(--warn);
  color: #fff;
  border-radius: 12px;
  font-size: .82rem;
  box-shadow: var(--shadow);
}

/* ---------- Адаптив ---------- */
@media (max-width: 640px) {
  .topbar { padding: 10px 12px; }
  .layout { padding: 8px 12px 30px; }
  .stations { padding: 12px 12px 2px; }
  .charts { grid-template-columns: 1fr; }
  .brand-text h1 { font-size: 1.05rem; }
  .select-wrap select { max-width: 170px; }
}