/* ==========================================================================
   PCS — Components
   ========================================================================== */

.panel {
  position: relative;
  border: 1px solid var(--pcs-line);
  background: var(--pcs-panel);
  border-radius: var(--pcs-radius-lg);
  padding: 14px 16px;
  backdrop-filter: blur(8px);
  box-shadow: var(--pcs-shadow-soft);
  overflow: hidden;
  display: flex; flex-direction: column;
  min-height: 0;
}
.panel::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(56,189,248,0.08) 0, transparent 30%),
    linear-gradient(0deg,   rgba(99,102,241,0.06) 0, transparent 30%);
}
.panel::after {
  /* corner brackets */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(90deg, var(--pcs-blue-400) 0 18px, transparent 18px) 0 0/ 100% 1px no-repeat,
    linear-gradient(0deg,  var(--pcs-blue-400) 0 18px, transparent 18px) 0 0/ 1px 100% no-repeat,
    linear-gradient(-90deg,var(--pcs-blue-400) 0 18px, transparent 18px) 100% 0/ 100% 1px no-repeat,
    linear-gradient(180deg,var(--pcs-blue-400) 0 18px, transparent 18px) 100% 0/ 1px 100% no-repeat,
    linear-gradient(90deg, var(--pcs-blue-400) 0 18px, transparent 18px) 0 100%/100% 1px no-repeat,
    linear-gradient(0deg,  var(--pcs-blue-400) 0 18px, transparent 18px) 0 100%/1px 100% no-repeat,
    linear-gradient(-90deg,var(--pcs-blue-400) 0 18px, transparent 18px) 100% 100%/100% 1px no-repeat,
    linear-gradient(180deg,var(--pcs-blue-400) 0 18px, transparent 18px) 100% 100%/1px 100% no-repeat;
  filter: drop-shadow(0 0 6px rgba(56,189,248,0.6));
}

.panel-head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 10px;
  position: relative; z-index: 1;
}
.panel-head h3 {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.18em;
  font-weight: 600;
  color: var(--pcs-blue-200);
  text-shadow: var(--pcs-glow-text);
  text-transform: uppercase;
}
.panel-head .sub {
  font-size: 11px;
  color: var(--pcs-text-mute);
  letter-spacing: 0.1em;
}
.panel-head .right { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.panel-body { flex: 1; min-height: 0; position: relative; z-index: 1; }
.chart-canvas { width: 100%; height: 100%; min-height: 180px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  border-radius: var(--pcs-radius-md);
  border: 1px solid var(--pcs-line-strong);
  background: linear-gradient(180deg, rgba(56,189,248,0.18), rgba(2,132,199,0.18));
  color: var(--pcs-blue-50);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all var(--pcs-fast) var(--pcs-ease);
  position: relative; overflow: hidden;
  font-family: inherit;
}
.btn:hover {
  background: linear-gradient(180deg, rgba(56,189,248,0.32), rgba(2,132,199,0.28));
  box-shadow: var(--pcs-shadow-blue);
  transform: translateY(-1px);
}
.btn:active { transform: translateY(0); }
.btn[disabled], .btn.disabled {
  opacity: 0.45; cursor: not-allowed; box-shadow: none; transform: none;
  background: rgba(40, 60, 90, 0.4);
}
.btn-ghost {
  background: transparent;
  border-color: var(--pcs-line);
  color: var(--pcs-text-soft);
}
.btn-ghost:hover {
  border-color: var(--pcs-line-strong);
  background: rgba(56,189,248,0.08);
  color: var(--pcs-blue-200);
}
.btn-danger {
  background: linear-gradient(180deg, rgba(239,68,68,0.25), rgba(127,29,29,0.25));
  border-color: rgba(239,68,68,0.55);
  color: #ffd0d0;
}
.btn-danger:hover { box-shadow: 0 0 18px rgba(239,68,68,0.45); }
.btn-success {
  background: linear-gradient(180deg, rgba(34,197,94,0.22), rgba(20,83,45,0.22));
  border-color: rgba(34,197,94,0.55);
  color: #d8ffe6;
}
.btn-success:hover { box-shadow: 0 0 18px rgba(34,197,94,0.4); }

/* Inputs */
.input, .select, textarea.input {
  width: 100%;
  padding: 10px 12px;
  background: rgba(8, 16, 32, 0.7);
  border: 1px solid var(--pcs-line);
  border-radius: var(--pcs-radius-md);
  color: var(--pcs-text);
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 0.05em;
  transition: border var(--pcs-fast) var(--pcs-ease), box-shadow var(--pcs-fast) var(--pcs-ease);
}
.input:focus, .select:focus, textarea.input:focus {
  outline: none;
  border-color: var(--pcs-blue-400);
  box-shadow: 0 0 0 3px rgba(56,189,248,0.18);
}
label.field {
  display: block;
  font-size: 12px;
  color: var(--pcs-text-soft);
  letter-spacing: 0.12em;
  margin-bottom: 4px;
}

/* Tables */
table.data {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
}
table.data thead th {
  text-align: left;
  padding: 10px 12px;
  background: rgba(8, 22, 44, 0.85);
  color: var(--pcs-blue-200);
  letter-spacing: 0.12em;
  font-weight: 600;
  border-bottom: 1px solid var(--pcs-line-strong);
  position: sticky; top: 0; z-index: 1;
}
table.data tbody td {
  padding: 10px 12px;
  color: var(--pcs-text);
  border-bottom: 1px solid var(--pcs-line);
}
table.data tbody tr:hover td { background: rgba(56,189,248,0.05); }

/* Badges */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.1em;
  border: 1px solid var(--pcs-line);
  color: var(--pcs-text-soft);
  background: rgba(20, 36, 60, 0.6);
}
.badge.good { color: #b8ffce; border-color: rgba(34,197,94,0.4); background: rgba(34,197,94,0.12); }
.badge.warn { color: #ffe6b8; border-color: rgba(245,158,11,0.4); background: rgba(245,158,11,0.12); }
.badge.bad  { color: #ffc6c6; border-color: rgba(239,68,68,0.4); background: rgba(239,68,68,0.12); }
.badge.info { color: #c8e8ff; border-color: var(--pcs-line-strong); background: rgba(56,189,248,0.10); }

/* KPI cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  height: 100%;
}
.kpi {
  position: relative;
  padding: 14px;
  border-radius: var(--pcs-radius-md);
  border: 1px solid var(--pcs-line);
  background: linear-gradient(160deg, rgba(13,29,58,0.7), rgba(8,16,32,0.7));
  display: flex; flex-direction: column; justify-content: space-between;
  overflow: hidden;
}
.kpi .label {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--pcs-text-soft);
  text-transform: uppercase;
}
.kpi .value {
  font-family: var(--pcs-mono);
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(180deg, #cdeaff, #38bdf8);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 18px rgba(56,189,248,0.25);
  letter-spacing: 0.05em;
}
.kpi .unit { font-size: 12px; color: var(--pcs-text-mute); margin-left: 6px; }
.kpi .spark { height: 28px; }

/* Auth pages */
.auth-shell {
  position: relative; z-index: 1;
  width: 100vw; height: 100vh;
  display: grid; place-items: center;
  padding: 20px;
}
.auth-card {
  width: 100%; max-width: 440px;
  background: var(--pcs-panel-strong);
  border: 1px solid var(--pcs-line-strong);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--pcs-shadow-blue), 0 30px 80px rgba(0,0,0,0.6);
  position: relative;
  overflow: hidden;
}
.auth-card .auth-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--pcs-blue-200);
  text-shadow: var(--pcs-glow-text);
  margin-bottom: 4px;
}
.auth-card .auth-sub { color: var(--pcs-text-mute); font-size: 12px; margin-bottom: 24px; letter-spacing: 0.1em; }
.auth-card .field-row { margin-bottom: 14px; }
.auth-card .actions { display: flex; gap: 12px; margin-top: 12px; }

/* Dialog */
.modal-mask {
  position: fixed; inset: 0; background: rgba(2,5,13,0.6); backdrop-filter: blur(6px);
  display: none; align-items: center; justify-content: center; z-index: 100;
  animation: fadeIn 200ms var(--pcs-ease);
}
.modal-mask.show { display: flex; }
.modal {
  width: min(560px, calc(100% - 32px));
  background: var(--pcs-panel-strong);
  border: 1px solid var(--pcs-line-strong);
  border-radius: var(--pcs-radius-lg);
  box-shadow: var(--pcs-shadow-blue), 0 30px 80px rgba(0,0,0,0.6);
  padding: 24px;
}
.modal h3 { margin: 0 0 14px; color: var(--pcs-blue-200); letter-spacing: 0.16em; }
.modal .actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; }

/* Toast */
.toast-wrap { position: fixed; right: 20px; top: 80px; z-index: 1000; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 10px 14px;
  border-radius: var(--pcs-radius-md);
  background: rgba(2,5,13,0.92);
  border: 1px solid var(--pcs-line-strong);
  color: var(--pcs-blue-50);
  box-shadow: var(--pcs-shadow-blue);
  font-size: 13px;
  animation: slideIn 220ms var(--pcs-ease);
  min-width: 220px;
}
.toast.bad { border-color: rgba(239,68,68,0.6); color: #ffd0d0; }
.toast.good { border-color: rgba(34,197,94,0.6); color: #d8ffe6; }

/* SVG device */
.device-svg { width: 100%; height: 100%; min-height: 180px; }

/* Empty / Loading */
.empty {
  display: grid; place-items: center; height: 100%;
  color: var(--pcs-text-mute); font-size: 13px;
}
.loading-bar {
  position: relative; height: 2px; overflow: hidden;
  background: rgba(56,189,248,0.12);
}
.loading-bar::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, var(--pcs-blue-400), transparent);
  animation: scan 1.6s linear infinite;
}

/* Forms layout */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.toolbar {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  margin-bottom: 12px;
}

.metric-strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
  margin-bottom: 12px;
}