/* style.css — modern light theme for the BLE Sensor Dashboard */

:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --border: #e6e8ee;
  --border-strong: #d6d9e2;
  --text: #1f2430;
  --text-muted: #64748b;
  --text-faint: #94a3b8;

  --accent: #4f46e5;        /* indigo — primary / Device A */
  --accent-hover: #4338ca;
  --accent-soft: #eef2ff;
  --teal: #0d9488;          /* Device B */
  --teal-hover: #0f766e;
  --teal-soft: #f0fdfa;
  --brand: #5dbdd7;         /* Nu Lambda Scientific cyan */
  --brand-dark: #3ba0bd;

  --green: #16a34a;
  --amber: #f59e0b;
  --red: #dc2626;
  --gray-dot: #cbd5e1;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 4px 16px rgba(16, 24, 40, 0.06);
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);

  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px 20px 8px;
}

/* --------------------------------- Header --------------------------------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--brand), rgba(93, 189, 215, 0)) 1;
}

.brand { display: flex; align-items: center; gap: 14px; }

.brand-logo {
  width: 46px; height: 46px; border-radius: 12px;
  flex-shrink: 0;
  box-shadow: 0 2px 10px rgba(93, 189, 215, 0.35);
  background: #fff;
}

.brand-text h1 { margin: 0; font-size: 22px; font-weight: 700; letter-spacing: -0.01em; }
.subtitle { color: var(--text-muted); font-size: 13px; }

.header-right { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }

.mode-switch {
  display: inline-flex;
  background: #eceef3;
  border-radius: 10px;
  padding: 3px;
}
.mode-btn {
  border: none; background: transparent; cursor: pointer;
  font-family: inherit; font-size: 13px; font-weight: 600;
  color: var(--text-muted);
  padding: 7px 14px; border-radius: 8px;
  transition: all 0.15s ease;
}
.mode-btn.active {
  background: var(--card); color: var(--text);
  box-shadow: var(--shadow-sm);
}

.pills { display: flex; gap: 8px; flex-wrap: wrap; }
.conn-pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 999px; padding: 6px 14px;
  font-size: 13px; font-weight: 500; color: var(--text-muted);
  box-shadow: var(--shadow-sm);
  max-width: 220px;
}
.pill-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.status-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--gray-dot); flex-shrink: 0;
  transition: background 0.2s ease;
}
.status-dot.connecting { background: var(--amber); animation: pulse 1s infinite; }
.status-dot.connected { background: var(--green); }

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.5); }
  50% { opacity: 0.6; box-shadow: 0 0 0 5px rgba(245, 158, 11, 0); }
}

/* Web Bluetooth warning */
.ble-warning {
  background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c;
  border-radius: var(--radius-sm); padding: 12px 16px; margin-bottom: 18px;
  font-size: 14px;
}
.ble-warning code { background: #fff; padding: 1px 6px; border-radius: 5px; }

/* --------------------------------- Panels --------------------------------- */
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.device-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 16px;
}
body.mode-1 .device-panels { grid-template-columns: 1fr; }

.device-panel { padding: 18px; }

.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-bottom: 16px;
}
.panel-title-row { display: flex; align-items: center; gap: 10px; min-width: 0; }
.slot-badge {
  width: 26px; height: 26px; border-radius: 8px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: #fff;
}
.slot-badge-a { background: var(--accent); }
.slot-badge-b { background: var(--teal); }
.device-name {
  font-weight: 600; font-size: 15px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.conn-controls { display: flex; gap: 8px; }

.panel-body { display: flex; flex-direction: column; gap: 16px; }

.rate-control { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.rate-control label { font-size: 13px; font-weight: 600; color: var(--text-muted); }
.rate-group { display: flex; gap: 8px; }
.rate-group input {
  width: 90px; padding: 8px 10px; font-family: inherit; font-size: 14px;
  border: 1px solid var(--border-strong); border-radius: 8px; color: var(--text);
  background: #fff;
}
.rate-group input:disabled { background: #f1f3f7; color: var(--text-faint); }

.origin-control { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.origin-control label { font-size: 13px; font-weight: 600; color: var(--text-muted); }
.origin-control input {
  width: 110px; padding: 8px 10px; font-family: inherit; font-size: 14px;
  border: 1px solid var(--border-strong); border-radius: 8px; color: var(--text); background: #fff;
}

.metric-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.metric-card {
  background: #f9fafc; border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 14px;
}
.metric-label {
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--text-faint); margin-bottom: 4px;
}
.metric-value { font-size: 22px; font-weight: 700; display: flex; align-items: baseline; gap: 4px; }
.metric-unit { font-size: 12px; font-weight: 600; color: var(--text-muted); }

/* --------------------------------- Buttons -------------------------------- */
.btn {
  font-family: inherit; font-size: 14px; font-weight: 600;
  border-radius: 9px; padding: 9px 16px; cursor: pointer;
  border: 1px solid transparent; transition: all 0.15s ease;
  display: inline-flex; align-items: center; gap: 7px; white-space: nowrap;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-sm { padding: 8px 12px; font-size: 13px; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:not(:disabled):hover { background: var(--accent-hover); }
.btn-primary.btn-teal { background: var(--teal); }
.btn-primary.btn-teal:not(:disabled):hover { background: var(--teal-hover); }

.btn-secondary { background: #fff; color: var(--text); border-color: var(--border-strong); }
.btn-secondary:not(:disabled):hover { background: #f5f6fa; border-color: var(--text-faint); }

.btn-ghost { background: transparent; color: var(--text-muted); border-color: var(--border); }
.btn-ghost:hover { background: #fff; color: var(--text); }

.global-actions { display: flex; justify-content: flex-end; gap: 10px; margin-bottom: 16px; }

/* Icon toolbar buttons */
.icon-btn {
  width: 34px; height: 34px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--border); background: #fff; color: var(--text-muted);
  display: inline-flex; align-items: center; justify-content: center;
  transition: all 0.15s ease; padding: 0;
}
.icon-btn:not(:disabled):hover { background: var(--accent-soft); color: var(--accent); border-color: #c7d2fe; }
.icon-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.icon-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.toolbar-divider { width: 1px; height: 20px; background: var(--border); margin: 0 3px; }

/* --------------------------------- Charts --------------------------------- */
.charts-area { display: flex; flex-direction: column; gap: 18px; margin-bottom: 16px; }

/* In 2-device mode, A and B sit side by side, XY spans full width below. */
body.mode-2 .charts-area {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
/* In 2-device mode every chart is a half-width grid cell (2 columns). */

/* min-width:0 lets grid columns stay equal instead of growing to the
   canvas's intrinsic width (which otherwise makes one chart wider). */
.chart-card { padding: 18px; min-width: 0; }
.chart-container { min-width: 0; }
.chart-card canvas { max-width: 100%; }

.chart-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-bottom: 14px;
}
.chart-title { font-size: 15px; font-weight: 700; }
.chart-toolbar { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }

/* Magnetometer readout cards (Bx/By/Bz/|B| current + stable) */
.mag-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
/* Keep component symbols and the µT unit as-is (no uppercasing). */
.mag-card .metric-label { text-transform: none; letter-spacing: 0; }
.mag-card .metric-unit { text-transform: none; }
.mag-row { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.mag-cur { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.mag-stable { font-size: 12px; color: var(--text-faint); }
.mag-avg { font-weight: 600; color: var(--text-muted); font-variant-numeric: tabular-nums; }

.chart-container { position: relative; height: 340px; width: 100%; }

/* Analysis section */
.analysis-section { margin-top: 14px; }
.analysis-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.fit-instructions {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: var(--accent-soft); border: 1px solid #c7d2fe; color: var(--accent-hover);
  border-radius: var(--radius-sm); padding: 10px 14px; font-size: 13px; font-weight: 500;
}
.result-card {
  margin-top: 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  overflow: hidden;
}
.result-header {
  display: flex; align-items: center; justify-content: space-between;
  background: #f9fafc; padding: 10px 14px; font-size: 13px; font-weight: 700;
  border-bottom: 1px solid var(--border);
}
.result-header.stats { color: var(--accent); }
.result-header.fit { color: var(--red); }
.result-body { padding: 12px 14px; display: grid; gap: 6px; }
.result-stat { font-size: 13px; color: var(--text); }
.result-stat strong { color: var(--text-muted); font-weight: 600; margin-right: 4px; }
.close-btn {
  border: none; background: transparent; cursor: pointer; font-size: 18px;
  line-height: 1; color: var(--text-faint); padding: 0 4px;
}
.close-btn:hover { color: var(--text); }

/* --------------------------------- Console -------------------------------- */
.console-panel { padding: 16px 18px; margin-bottom: 24px; }
.console-title { font-size: 14px; font-weight: 700; margin-bottom: 10px; }
.console-output {
  max-height: 200px; overflow-y: auto;
  background: #0f1729; border-radius: var(--radius-sm); padding: 12px 14px;
  font-family: "SF Mono", "Roboto Mono", Menlo, Consolas, monospace; font-size: 12.5px;
}
.console-line { display: flex; gap: 8px; padding: 1px 0; }
.console-time { color: #64748b; flex-shrink: 0; }
.console-slot { font-weight: 700; flex-shrink: 0; }
.console-slot.A { color: #818cf8; }
.console-slot.B { color: #2dd4bf; }
.console-msg { word-break: break-word; }
.console-msg.info { color: #cbd5e1; }
.console-msg.success { color: #4ade80; }
.console-msg.warning { color: #fbbf24; }
.console-msg.error { color: #f87171; }

/* --------------------------------- Footer --------------------------------- */
.app-footer {
  text-align: center; color: var(--text-faint); font-size: 12px;
  padding: 12px 0 28px;
}

/* -------------------------- Mode visibility rules ------------------------- */
body.mode-1 .slot-b { display: none !important; }

/* ------------------------------- Responsive ------------------------------- */
@media (max-width: 860px) {
  body.mode-2 .device-panels,
  body.mode-2 .charts-area { grid-template-columns: 1fr; }
  .header-right { width: 100%; justify-content: space-between; }
}
@media (max-width: 520px) {
  .metric-cards { grid-template-columns: 1fr 1fr; }
  .chart-container { height: 280px; }
}