/* ── Reset & base ─────────────────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0d1117;
  --surface:     #161b22;
  --surface2:    #21262d;
  --border:      #30363d;
  --text:        #c9d1d9;
  --text-dim:    #6e7681;
  --text-bright: #f0f6fc;
  --accent:      #00d4aa;
  --accent-dim:  #009977;
  --pv:          #f5a623;
  --ac:          #58a6ff;
  --off:         #6e7681;
  --ok:          #3fb950;
  --danger:      #f85149;
  --warn:        #d29922;
  --card-radius: 10px;
  --gap:         16px;
}

html { font-size: 15px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

/* ── Header ───────────────────────────────────────────────────────────────── */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 12px;
  flex-wrap: wrap;
}

.header-left { display: flex; align-items: center; gap: 10px; }

header h1 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.3px;
}

.device-id {
  font-size: 0.75rem;
  color: var(--text-dim);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
  font-family: monospace;
}

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

.status-badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 3px 10px;
  border-radius: 12px;
  text-transform: uppercase;
}
.status-online  { background: rgba(63,185,80,0.15);  color: var(--ok);     border: 1px solid rgba(63,185,80,0.3);  }
.status-offline { background: rgba(248,81,73,0.15);  color: var(--danger); border: 1px solid rgba(248,81,73,0.3);  }
.status-unknown { background: var(--surface2);       color: var(--text-dim); border: 1px solid var(--border);     }

.last-seen { font-size: 0.78rem; color: var(--text-dim); }

.icon-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 5px 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: color 0.2s, border-color 0.2s;
}
.icon-btn:hover { color: var(--accent); border-color: var(--accent-dim); }
.icon-btn.spinning svg { animation: spin 1s linear infinite; }

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

.refresh-time { font-size: 0.75rem; color: var(--text-dim); white-space: nowrap; }

/* ── Main layout ──────────────────────────────────────────────────────────── */

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px var(--gap);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.section-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

/* ── Cards ────────────────────────────────────────────────────────────────── */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--gap);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-label {
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-dim);
}

.card-temp { border-top: 3px solid var(--accent); }

.value-big {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-bright);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.value-med {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-bright);
  font-variant-numeric: tabular-nums;
}

.unit { font-size: 0.82rem; color: var(--text-dim); }
.dim  { color: var(--text-dim); }

.card-sub {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 4px;
}

.savings { color: var(--ok); }

/* ── Badges ───────────────────────────────────────────────────────────────── */

.badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.4px;
  padding: 4px 12px;
  border-radius: 6px;
  text-transform: uppercase;
  align-self: flex-start;
}
.badge-pv  { background: rgba(245,166,35,0.15); color: var(--pv);     border: 1px solid rgba(245,166,35,0.3); }
.badge-ac  { background: rgba(88,166,255,0.15); color: var(--ac);     border: 1px solid rgba(88,166,255,0.3); }
.badge-ok  { background: rgba(63,185,80,0.15);  color: var(--ok);     border: 1px solid rgba(63,185,80,0.3);  }
.badge-off { background: var(--surface2);       color: var(--off);    border: 1px solid var(--border);         }
.badge-hot { background: rgba(248,81,73,0.15);  color: var(--danger); border: 1px solid rgba(248,81,73,0.3);  }

/* ── Chart ────────────────────────────────────────────────────────────────── */

.chart-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 20px;
  height: 300px;
  position: relative;
}

/* ── Settings ─────────────────────────────────────────────────────────────── */

.settings-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.setting-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text);
}

.settings-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 600px) {
  .settings-row { grid-template-columns: 1fr; }
}

.setting-group-narrow { max-width: 300px; }

/* Inputs */
.select, .num-input, input[type="time"], input[type="number"] {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 8px 12px;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}
.select { width: 100%; }
.num-input { width: 80px; }

.select:focus, .num-input:focus, input[type="time"]:focus, input[type="number"]:focus {
  border-color: var(--accent);
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.slider {
  flex: 1;
  accent-color: var(--accent);
  cursor: pointer;
}

.input-inline {
  display: flex;
  align-items: center;
  gap: 8px;
}
.input-prefix {
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* ── Timers ───────────────────────────────────────────────────────────────── */

.timers-section h3 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.hint {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 14px;
  line-height: 1.5;
}

.timer-row {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  transition: opacity 0.2s;
}
.timer-row.disabled { opacity: 0.45; }

.timer-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dim);
  width: 52px;
  flex-shrink: 0;
}

.timer-enable {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
}
.timer-enable input[type="checkbox"] {
  accent-color: var(--accent);
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.timer-times {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.timer-times span {
  font-size: 0.8rem;
  color: var(--text-dim);
}
.timer-times input[type="time"] {
  padding: 5px 8px;
  font-size: 0.85rem;
}

.days-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.day-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  cursor: pointer;
}

.day-label input[type="checkbox"] {
  accent-color: var(--accent);
  width: 14px;
  height: 14px;
  cursor: pointer;
}

.day-label span {
  font-size: 0.68rem;
  color: var(--text-dim);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */

.btn {
  padding: 9px 20px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity 0.15s, transform 0.1s;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn:not(:disabled):active { transform: scale(0.97); }

.btn-primary { background: var(--accent); color: #0d1117; }
.btn-primary:not(:disabled):hover { background: #00e6b8; }

.btn-danger { background: rgba(248,81,73,0.15); color: var(--danger); border: 1px solid rgba(248,81,73,0.4); }
.btn-danger:not(:disabled):hover { background: rgba(248,81,73,0.25); }

.btn-ghost { background: none; color: var(--text-dim); border: 1px solid var(--border); }
.btn-ghost:not(:disabled):hover { color: var(--text); border-color: var(--text-dim); }
.btn-sm { padding: 5px 12px; font-size: 0.8rem; }

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 6px;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}

/* ── Toast ────────────────────────────────────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 0.88rem;
  color: var(--text-bright);
  transition: transform 0.3s ease;
  z-index: 1000;
  pointer-events: none;
  white-space: nowrap;
  max-width: 90vw;
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast.toast-success { border-color: rgba(63,185,80,0.5);   color: var(--ok);     }
.toast.toast-error   { border-color: rgba(248,81,73,0.5);   color: var(--danger); }
.toast.toast-info    { border-color: rgba(88,166,255,0.5);  color: var(--ac);     }

/* ── Scrollbar ────────────────────────────────────────────────────────────── */

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }