:root {
  --bg: #020818;
  --bg2: #061428;
  --panel: rgba(6, 28, 58, 0.72);
  --line: rgba(0, 180, 255, 0.35);
  --line-bright: rgba(0, 212, 255, 0.75);
  --accent: #00d4ff;
  --accent2: #ffd54a;
  --text: #e8f4ff;
  --muted: #7a9bb8;
  --up: #3dd68c;
  --danger: #ff6b6b;
  --warn: #ffb347;
  --tap: 44px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(0, 100, 180, 0.25), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(0, 80, 160, 0.15), transparent),
    var(--bg);
  color: var(--text);
}

button, input, select { font: inherit; }
button { cursor: pointer; }

/* ----- login ----- */
.login-body {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.login-wrap { width: min(100%, 400px); }

.login-brand { text-align: center; margin-bottom: 1.5rem; }

.logo {
  width: 56px; height: 56px; margin: 0 auto 0.85rem;
  border-radius: 16px; display: grid; place-items: center;
  font-weight: 800; background: linear-gradient(145deg, #00d4ff, #0066cc);
  color: #001a33;
}

.login-brand h1 { margin: 0; font-size: 1.5rem; color: var(--accent); }
.login-brand p, .login-foot { color: var(--muted); font-size: 0.9rem; text-align: center; }

.login-card {
  display: grid; gap: 0.85rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.15rem;
  box-shadow: 0 0 24px rgba(0, 180, 255, 0.08);
}

.login-card label {
  display: grid; gap: 0.35rem;
  font-size: 0.85rem; color: var(--muted);
}

.login-card input {
  min-height: var(--tap);
  background: rgba(0, 20, 40, 0.8);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
}

.login-card button {
  min-height: var(--tap);
  background: linear-gradient(90deg, #0088cc, #00d4ff);
  color: #001a33;
  border: 0;
  border-radius: 8px;
  font-weight: 700;
}

.login-error { margin: 0; color: var(--danger); font-size: 0.85rem; }
.login-error[hidden] { display: none; }

/* ----- dashboard ----- */
.app-body { min-height: 100dvh; overflow: hidden; }

.dashboard {
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.dash-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(0, 40, 80, 0.5), transparent);
}

.dash-title-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.dash-title-deco {
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent));
}
.dash-title-deco:last-child {
  background: linear-gradient(90deg, var(--accent), transparent);
}

.dash-header h1 {
  margin: 0;
  font-size: clamp(1rem, 2.5vw, 1.45rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
  white-space: nowrap;
}

.hdr-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; justify-content: flex-end; }

.hdr-btn {
  background: rgba(0, 60, 100, 0.4);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 4px;
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.hdr-btn:hover, .hdr-btn.active {
  border-color: var(--line-bright);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.25);
  color: var(--accent);
}
.hdr-btn.danger { color: #ff9999; border-color: rgba(255, 100, 100, 0.4); }

.dash-body {
  display: grid;
  grid-template-columns: 240px 1fr 280px;
  gap: 0.65rem;
  padding: 0.65rem;
  min-height: 0;
  overflow: hidden;
}

.dash-col { display: grid; gap: 0.65rem; min-height: 0; overflow: hidden; }
.dash-left, .dash-right { grid-template-rows: 1fr auto; }
.dash-center { min-height: 0; }

.dash-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.65rem 0.75rem;
  position: relative;
  box-shadow: inset 0 0 30px rgba(0, 100, 180, 0.06);
}
.dash-panel::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-bright), transparent);
}
.dash-panel.fill {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
}

.panel-title {
  font-size: 0.88rem;
  color: var(--accent);
  margin-bottom: 0.55rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(0, 180, 255, 0.2);
}
.panel-title.row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.dash-search {
  width: 100%;
  background: rgba(0, 20, 40, 0.7);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 4px;
  padding: 0.45rem 0.6rem;
  margin-bottom: 0.55rem;
  font-size: 0.82rem;
}

.org-tree {
  overflow: auto;
  max-height: 42vh;
  display: grid;
  gap: 0.25rem;
}
.org-row { display: flex; align-items: center; gap: 0.25rem; }
.org-node {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  text-align: left;
  background: rgba(0, 30, 60, 0.5);
  border: 1px solid transparent;
  color: var(--text);
  border-radius: 4px;
  padding: 0.4rem 0.55rem;
  font-size: 0.82rem;
}
.org-node.selected {
  border-color: var(--accent);
  background: rgba(0, 100, 160, 0.25);
  color: var(--accent);
}
.org-meta { margin-left: auto; color: var(--muted); font-size: 0.72rem; }
.org-del {
  background: none; border: 0; color: var(--danger);
  font-size: 0.72rem; padding: 0.2rem;
}

.status-chart {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.25rem 0;
}
.donut-wrap { position: relative; width: 100px; height: 100px; }
.donut-wrap svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.donut-center {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-size: 1.1rem; font-weight: 700; color: var(--accent);
}
.status-legend { display: grid; gap: 0.45rem; font-size: 0.82rem; }
.legend-item { display: flex; align-items: center; gap: 0.4rem; }
.legend-dot {
  width: 10px; height: 10px; border-radius: 50%;
}
.legend-dot.online { background: var(--up); box-shadow: 0 0 8px var(--up); }
.legend-dot.offline { background: var(--danger); box-shadow: 0 0 8px var(--danger); }
.legend-dot.inactive { background: var(--warn); }

.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.55rem;
  overflow: auto;
  flex: 1;
  min-height: 0;
  padding: 0.15rem;
  align-content: start;
}

.pressure-card {
  background: rgba(0, 25, 50, 0.65);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.55rem 0.65rem;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.pressure-card:hover, .pressure-card.selected {
  border-color: var(--line-bright);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.15);
}
.pressure-card .card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.45rem;
  font-size: 0.88rem;
  font-weight: 600;
}
.pressure-card .curve-btn {
  background: rgba(255, 140, 0, 0.2);
  border: 1px solid rgba(255, 140, 0, 0.5);
  color: #ffb347;
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
  font-size: 0.72rem;
}
.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.25rem 0;
  border-top: 1px solid rgba(0, 180, 255, 0.1);
  font-size: 0.78rem;
}
.metric-row .label { color: var(--muted); }
.metric-row .value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent2);
}
.metric-row .value.temp { color: var(--accent); font-size: 0.95rem; }
.metric-row .time { color: var(--muted); font-size: 0.7rem; margin-top: 0.1rem; }
.dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  margin-right: 0.25rem;
}
.dot.online { background: var(--up); box-shadow: 0 0 6px var(--up); }
.dot.offline { background: var(--danger); }
.dot.inactive { background: var(--warn); }

.table-wrap { overflow: auto; max-height: 38vh; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}
.data-table th {
  text-align: left;
  color: var(--accent);
  padding: 0.4rem 0.35rem;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(6, 28, 58, 0.95);
}
.data-table td {
  padding: 0.38rem 0.35rem;
  border-bottom: 1px solid rgba(0, 180, 255, 0.08);
  color: var(--text);
}
.data-table tr:hover td { background: rgba(0, 100, 160, 0.12); }

.chart-select {
  background: rgba(0, 20, 40, 0.8);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 4px;
  padding: 0.2rem 0.4rem;
  font-size: 0.75rem;
  max-width: 130px;
}

#pressureChart {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 0.35rem;
  border: 1px solid rgba(0, 180, 255, 0.15);
  border-radius: 4px;
  background: rgba(0, 15, 30, 0.5);
}

.chips { display: flex; gap: 0.3rem; flex-wrap: wrap; }
.chip {
  background: rgba(0, 30, 60, 0.6);
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.15rem 0.5rem;
  font-size: 0.72rem;
}
.chip.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(0, 100, 160, 0.3);
}

.hint { color: var(--muted); font-size: 0.82rem; line-height: 1.5; }
.hint.tight { margin: 0.5rem 0 0; }
.empty-block { text-align: center; padding: 2rem 1rem; color: var(--muted); }
.empty-block p { margin: 0.35rem 0; }

.mobile-nav {
  display: none;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
  background: rgba(2, 8, 24, 0.95);
  padding-bottom: env(safe-area-inset-bottom);
}
.nav-btn {
  background: none; border: 0;
  color: var(--muted);
  padding: 0.65rem;
  font-size: 0.85rem;
}
.nav-btn.active { color: var(--accent); }

.me-drawer {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 15;
  display: grid;
  place-items: end center;
}
.me-drawer[hidden] { display: none; }
.me-inner {
  width: min(100%, 420px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px 16px 0 0;
  padding: 1.25rem;
}
.me-head { display: flex; align-items: center; gap: 0.85rem; margin-bottom: 1rem; }
.avatar {
  width: 48px; height: 48px; border-radius: 12px;
  display: grid; place-items: center; font-weight: 800;
  background: linear-gradient(145deg, #00d4ff, #0066cc);
  color: #001a33;
}
.row-item {
  display: flex; justify-content: space-between;
  padding: 0.65rem 0;
  border-bottom: 1px solid rgba(0, 180, 255, 0.15);
  font-size: 0.9rem;
}
.row-item span { color: var(--muted); }
.switch-row {
  display: flex; justify-content: space-between;
  align-items: center; padding: 0.75rem 0;
}
.switch-row input { accent-color: var(--accent); }
.me-close { width: 100%; margin-top: 0.75rem; }

.ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 6px;
  min-height: 36px;
  padding: 0 0.75rem;
}

.modal {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: grid; place-items: center;
  z-index: 20;
  padding: 1rem;
}
.modal[hidden] { display: none; }
.modal-card {
  width: min(100%, 420px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.1rem;
  box-shadow: 0 0 40px rgba(0, 180, 255, 0.12);
}
.modal-card h3 { margin: 0 0 0.85rem; color: var(--accent); }
.form { display: grid; gap: 0.65rem; }
.form label { display: grid; gap: 0.3rem; font-size: 0.85rem; color: var(--muted); }
.form input, .form select {
  background: rgba(0, 20, 40, 0.8);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 6px;
  padding: 0.55rem 0.65rem;
  min-height: var(--tap);
}
.modal-actions {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; margin-top: 0.4rem;
}
.modal-actions button[type="submit"] {
  background: linear-gradient(90deg, #0088cc, #00d4ff);
  color: #001a33; border: 0; border-radius: 8px; font-weight: 700;
}

@media (max-width: 960px) {
  .dash-body {
    grid-template-columns: 1fr;
    overflow: auto;
  }
  .dash-left, .dash-right { grid-template-rows: auto; }
  .org-tree, .table-wrap { max-height: 28vh; }
  .dash-header {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hdr-actions { justify-content: center; }
  .mobile-nav { display: grid; }
  .dash-body.me-open { display: none; }
}

@media (min-width: 961px) {
  .dash-body { height: calc(100dvh - 52px); }
}