/* ==========================================================================
   Apex 300 Dashboard — dark theme
   ========================================================================== */

:root {
  --bg-0: #070b14;
  --bg-1: #0b1120;
  --bg-2: #101a2e;
  --card: rgba(20, 30, 52, 0.55);
  --card-border: rgba(120, 150, 220, 0.14);
  --card-border-hi: rgba(140, 170, 240, 0.30);
  --text: #e8eefb;
  --text-dim: #8fa0c2;
  --text-faint: #5a6a8c;
  --accent: #4da3ff;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #f87171;
  --cyan: #22d3ee;
  --violet: #a78bfa;
  --ring-track: rgba(120, 150, 220, 0.10);
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  --radius: 18px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", "Cascadia Code", "JetBrains Mono", Consolas, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-0);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* --- ambient background ------------------------------------------------ */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(77, 163, 255, 0.13), transparent 60%),
    radial-gradient(800px 500px at 90% 0%, rgba(167, 139, 250, 0.10), transparent 60%),
    radial-gradient(1000px 700px at 50% 110%, rgba(34, 211, 238, 0.07), transparent 60%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
}

/* --- top bar ----------------------------------------------------------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 28px;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 20, 0.72);
  border-bottom: 1px solid rgba(120, 150, 220, 0.10);
}

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

.brand-mark {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: transparent;
}
.brand-mark img { display: block; filter: drop-shadow(0 0 10px rgba(0, 162, 228, 0.35)); }

.brand-logo { display: block; height: 17px; width: auto; }
.brand-text { display: flex; flex-direction: column; gap: 3px; }
.brand-sub { font-size: 11px; color: var(--text-dim); letter-spacing: 1.6px; text-transform: uppercase; }

.topbar-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }

.updated {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  white-space: nowrap;
}

/* --- transport chips --------------------------------------------------- */
.transport-chips { display: flex; gap: 8px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--card-border);
  background: rgba(16, 26, 46, 0.6);
  color: var(--text-dim);
  transition: all 0.35s ease;
  user-select: none;
}

.chip b { font-weight: 600; letter-spacing: 0.3px; }

.chip .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #4a5568;
  transition: all 0.35s ease;
}

.chip.connected { color: var(--text); border-color: rgba(52, 211, 153, 0.35); }
.chip.connected .dot { background: var(--green); box-shadow: 0 0 10px var(--green); animation: pulse 2.4s infinite; }

.chip.mock { color: var(--text); border-color: rgba(251, 191, 36, 0.35); }
.chip.mock .dot { background: var(--amber); box-shadow: 0 0 10px rgba(251, 191, 36, 0.8); animation: pulse 2.4s infinite; }

.chip.offline { opacity: 0.55; }
.chip.offline .dot { background: #3a4358; }

.chip.error { border-color: rgba(248, 113, 113, 0.4); }
.chip.error .dot { background: var(--red); box-shadow: 0 0 10px rgba(248, 113, 113, 0.7); }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.82); }
}

/* --- layout ------------------------------------------------------------ */
.layout {
  max-width: 1240px;
  margin: 0 auto;
  padding: 26px 24px 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

/* --- glass card -------------------------------------------------------- */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  padding: 22px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(160, 190, 255, 0.25), transparent);
  pointer-events: none;
}

/* --- hero SOC ---------------------------------------------------------- */
.hero-card { padding: 26px; }

.hero-ring-wrap {
  display: flex;
  align-items: center;
  gap: 34px;
  flex-wrap: wrap;
}

.soc-ring {
  --pct: 0;
  --ring-color: var(--green);
  width: 230px;
  height: 230px;
  border-radius: 50%;
  position: relative;
  background: conic-gradient(var(--ring-color) calc(var(--pct) * 1%), var(--ring-track) 0);
  display: grid;
  place-items: center;
  transition: filter 0.6s ease;
  filter: drop-shadow(0 0 26px color-mix(in srgb, var(--ring-color) 35%, transparent));
}

/* smooth ring sweep (registered custom property) */
@property --pct {
  syntax: '<number>';
  inherits: false;
  initial-value: 0;
}
.soc-ring { transition: --pct 1s ease, filter 0.6s ease; }

.soc-ring::after {
  content: "";
  position: absolute;
  inset: 14px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 35%, rgba(20, 32, 58, 0.9), var(--bg-1) 75%);
  border: 1px solid rgba(120, 150, 220, 0.12);
}

.soc-ring-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: baseline;
  gap: 3px;
}

.soc-value {
  font-size: 62px;
  font-weight: 800;
  letter-spacing: -2px;
  font-variant-numeric: tabular-nums;
  transition: color 0.5s ease;
  line-height: 1;
}

.soc-unit { font-size: 22px; font-weight: 600; color: var(--text-dim); }

.soc-ring.charge  { --ring-color: var(--green); }
.soc-ring.discharge { --ring-color: var(--cyan); }
.soc-ring.low     { --ring-color: var(--red); }
.soc-ring.mid     { --ring-color: var(--amber); }

.hero-side { flex: 1; min-width: min(220px, 100%); display: flex; flex-direction: column; gap: 16px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  align-self: flex-start;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.4px;
  border: 1px solid;
}

.badge .badge-dot { width: 9px; height: 9px; border-radius: 50%; background: currentColor; }

.badge.standby   { color: var(--text-dim); border-color: rgba(143, 160, 194, 0.35); background: rgba(143, 160, 194, 0.08); }
.badge.charge    { color: var(--green); border-color: rgba(52, 211, 153, 0.4); background: rgba(52, 211, 153, 0.08); }
.badge.discharge { color: var(--cyan); border-color: rgba(34, 211, 238, 0.4); background: rgba(34, 211, 238, 0.08); }

.badge.charge .badge-dot { animation: pulse 1.6s infinite; }

.hero-meta { display: flex; flex-direction: column; gap: 9px; }

.meta-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(120, 150, 220, 0.12);
}

.meta-label { font-size: 13px; color: var(--text-dim); }
.meta-val { font-family: var(--mono); font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; }

.device-id { display: flex; flex-direction: column; gap: 2px; }
.device-name { font-size: 15px; font-weight: 700; }
.device-sn { font-family: var(--mono); font-size: 12px; color: var(--text-faint); }

/* --- power cards ------------------------------------------------------- */
.power-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.power-card { padding: 18px; display: flex; flex-direction: column; gap: 12px; }

.power-card:hover { border-color: var(--card-border-hi); transform: translateY(-2px); }

.power-head { display: flex; align-items: center; gap: 9px; }

.power-icon {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: grid; place-items: center;
  flex-shrink: 0;
}

.power-icon.pv    { color: var(--amber); background: rgba(251, 191, 36, 0.12); border: 1px solid rgba(251, 191, 36, 0.25); }
.power-icon.grid  { color: var(--violet); background: rgba(167, 139, 250, 0.12); border: 1px solid rgba(167, 139, 250, 0.25); }
.power-icon.acout { color: var(--accent); background: rgba(77, 163, 255, 0.12); border: 1px solid rgba(77, 163, 255, 0.25); }
.power-icon.dcout { color: var(--green); background: rgba(52, 211, 153, 0.12); border: 1px solid rgba(52, 211, 153, 0.25); }

.power-title { font-size: 13px; font-weight: 600; color: var(--text-dim); letter-spacing: 0.3px; flex: 1; }

.flow-arrow {
  font-size: 15px;
  font-weight: 700;
  opacity: 0.35;
  transition: all 0.4s ease;
}

.flow-arrow.active.in  { color: var(--green); opacity: 1; text-shadow: 0 0 12px rgba(52, 211, 153, 0.7); }
.flow-arrow.active.out { color: var(--accent); opacity: 1; text-shadow: 0 0 12px rgba(77, 163, 255, 0.7); }

.power-value {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -1px;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  transition: color 0.4s ease;
}

.power-value small { font-size: 14px; font-weight: 600; color: var(--text-faint); margin-left: 4px; letter-spacing: 0; }

.power-value.idle { color: var(--text-faint); }

.power-bar {
  height: 5px;
  border-radius: 3px;
  background: rgba(120, 150, 220, 0.10);
  overflow: hidden;
}

.power-bar i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 3px;
  transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1), background 0.4s ease;
}

#bar-pv    { background: linear-gradient(90deg, rgba(251, 191, 36, 0.5), var(--amber)); }
#bar-grid  { background: linear-gradient(90deg, rgba(167, 139, 250, 0.5), var(--violet)); }
#bar-acout { background: linear-gradient(90deg, rgba(77, 163, 255, 0.5), var(--accent)); }
#bar-dcout { background: linear-gradient(90deg, rgba(52, 211, 153, 0.5), var(--green)); }

.power-foot { font-size: 12px; color: var(--text-faint); font-family: var(--mono); }

/* --- panel heads ------------------------------------------------------- */
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.panel-head h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
}

.panel-head h2 svg { color: var(--accent); }

/* --- battery panel ----------------------------------------------------- */
.battery-summary { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-dim); }
.battery-summary b { color: var(--text); font-family: var(--mono); font-weight: 700; }
.sum-sep { width: 1px; height: 14px; background: rgba(120, 150, 220, 0.2); }

.cell-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 10px;
}

.cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.cell-bar-wrap {
  width: 100%;
  height: 74px;
  border-radius: 8px;
  background: rgba(120, 150, 220, 0.07);
  border: 1px solid rgba(120, 150, 220, 0.10);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}

.cell-bar {
  width: 100%;
  height: 50%;
  border-radius: 0 0 7px 7px;
  background: linear-gradient(180deg, rgba(52, 211, 153, 0.9), rgba(52, 211, 153, 0.35));
  transition: height 0.8s cubic-bezier(0.22, 1, 0.36, 1), background 0.4s ease;
}

.cell-bar.warn { background: linear-gradient(180deg, rgba(251, 191, 36, 0.9), rgba(251, 191, 36, 0.35)); }
.cell-bar.low  { background: linear-gradient(180deg, rgba(248, 113, 113, 0.9), rgba(248, 113, 113, 0.35)); }

.cell-id { font-size: 10px; color: var(--text-faint); font-family: var(--mono); }
.cell-v  { font-size: 10.5px; color: var(--text-dim); font-family: var(--mono); font-variant-numeric: tabular-nums; }

.cell-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  font-size: 11px;
  color: var(--text-faint);
  font-family: var(--mono);
}

.cell-scale-mid { letter-spacing: 1px; text-transform: uppercase; font-size: 10px; }

/* --- status panel (READ-ONLY badges) ---------------------------------- */
.view-only-note {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-faint);
  border: 1px dashed rgba(120, 150, 220, 0.25);
  border-radius: 999px;
  padding: 5px 12px;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.status-item {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(16, 26, 46, 0.5);
  border: 1px solid rgba(120, 150, 220, 0.10);
  transition: border-color 0.35s ease, background 0.35s ease;
}

.status-item.on, .status-item.active {
  border-color: rgba(52, 211, 153, 0.30);
  background: rgba(52, 211, 153, 0.05);
}

.status-item.inactive {
  border-color: rgba(77, 163, 255, 0.28);
  background: rgba(77, 163, 255, 0.05);
}

.status-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.status-value {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 17px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.status-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #4a5568;
  flex-shrink: 0;
  transition: all 0.35s ease;
}

.status-item.on .status-dot {
  background: var(--green);
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.8);
}

.status-item.active .status-dot {
  background: var(--accent);
  box-shadow: 0 0 10px rgba(77, 163, 255, 0.8);
}

.status-sub { font-size: 11.5px; color: var(--text-faint); }

/* --- config panel ------------------------------------------------------ */
.config-panel { padding: 0; }

.config-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  padding: 20px 22px;
  cursor: pointer;
  text-align: left;
}

.config-toggle svg { color: var(--accent); }

.config-toggle .chev {
  margin-left: auto;
  transition: transform 0.3s ease;
  color: var(--text-faint);
}

.config-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }

.config-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.config-body.open { max-height: 600px; }

.config-body > * { padding: 0 22px; }
.config-body .config-table { padding-bottom: 20px; }

.config-note {
  font-size: 13px;
  color: var(--text-dim);
  padding-top: 0;
  line-height: 1.55;
}

.config-note code {
  font-family: var(--mono);
  font-size: 12px;
  background: rgba(77, 163, 255, 0.10);
  border: 1px solid rgba(77, 163, 255, 0.2);
  padding: 1px 6px;
  border-radius: 5px;
  color: var(--accent);
}

.config-table { display: flex; flex-direction: column; gap: 10px; padding-top: 14px; }

.config-row {
  display: grid;
  grid-template-columns: 90px 70px 1fr;
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(16, 26, 46, 0.5);
  border: 1px solid rgba(120, 150, 220, 0.10);
}

.config-row-name { font-weight: 700; font-size: 13px; letter-spacing: 0.5px; }
.config-row-status { font-size: 12px; font-family: var(--mono); }
.config-row-status.enabled { color: var(--green); }
.config-row-status.disabled { color: var(--text-faint); }
.config-row-params { font-size: 12px; color: var(--text-dim); font-family: var(--mono); word-break: break-all; }

/* --- footer ------------------------------------------------------------ */
.footer {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px 30px;
  display: flex;
  gap: 10px;
  font-size: 12px;
  color: var(--text-faint);
}

.footer-sep { opacity: 0.5; }

/* --- responsive -------------------------------------------------------- */
@media (max-width: 1000px) {
  .power-grid { grid-template-columns: repeat(2, 1fr); }
  .cell-grid { grid-template-columns: repeat(4, 1fr); }
  .status-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  :root { --radius: 14px; }
  /* compact sticky bar */
  .topbar { padding: 10px 14px; position: static; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-logo { height: 14px; }
  .brand-sub { font-size: 9px; letter-spacing: 1.2px; }
  .updated { font-size: 11px; white-space: normal; }
  .topbar-right { gap: 8px; }
  /* tighter page grid */
  .layout { padding: 12px 12px 28px; gap: 12px; }
  .card { padding: 16px; }
  .hero-card { padding: 18px 16px; }
  /* hero stacks vertically, ring centered and scaled */
  .hero-ring-wrap { gap: 18px; justify-content: center; }
  .soc-ring { width: 168px; height: 168px; }
  .soc-ring::after { inset: 11px; }
  .soc-value { font-size: 44px; letter-spacing: -1.5px; }
  .soc-unit { font-size: 17px; }
  .hero-side { min-width: 100%; }
  .meta-row { padding-bottom: 7px; }
  .meta-val { font-size: 14px; }
  /* power cards: 2-up with readable values */
  .power-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .power-card { padding: 14px 12px; gap: 9px; }
  .power-icon { width: 28px; height: 28px; border-radius: 8px; }
  .power-title { font-size: 11.5px; }
  .power-value { font-size: 24px; letter-spacing: -0.5px; }
  .power-value small { font-size: 12px; }
  /* status tiles stack with tap-friendly height */
  .status-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .status-item { padding: 13px 14px; }
  .status-value { font-size: 15px; }
  .status-label { font-size: 11px; }
  /* summary strip wraps instead of squeezing */
  .sum-sep { display: none; }
  .config-row { grid-template-columns: 1fr; gap: 4px; }
  /* kill hover-lift on touch */
  .power-card:hover { transform: none; }
}

/* very small phones */
@media (max-width: 360px) {
  .power-grid, .status-grid { grid-template-columns: 1fr; }
  .soc-ring { width: 150px; height: 150px; }
}

/* --- number animation helper ------------------------------------------- */
.num-flash { animation: numflash 0.6s ease; }

@keyframes numflash {
  0% { filter: brightness(1.6); }
  100% { filter: brightness(1); }
}

/* --- reduced motion ------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}