:root {
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --tab: #f3f4f6;
  --tabActive: #ffffff;
  --shadow: 0 1px 2px rgba(0,0,0,0.06);
  --radius: 12px;

  /* NEW: consistent page spacing */
  --pagePad: 12px;
  --panelPad: 12px;
}

/* Make sizing predictable */
* { box-sizing: border-box; }

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

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);

  /* was margin: 20px; */
  padding: var(--pagePad);

  /* helps mobile viewport jitter */
  min-height: 100vh;
}

/* Wrapper should behave like an app container */
.wrap {
  max-width: 1100px;     /* keeps things readable on big screens */
  margin: 0 auto;        /* center */
  display: flex;
  flex-direction: column;
  gap: 10px;             /* tighter vertical rhythm */
}

/* General panels */
.panel {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow);
  padding: var(--panelPad);     /* NEW: panel padding */
}

/* Buttons */
.btn {
  border: 1px solid var(--border);
  background: #fff;
  padding: 9px 11px;            /* slightly tighter */
  border-radius: 10px;
  cursor: pointer;
  box-shadow: var(--shadow);
  font: inherit;
  color: var(--text);
  user-select: none;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}

.btn:hover { background: #f9fafb; }

.btn--tab {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  padding: 8px 12px;            /* tighter */
  color: var(--muted);
}

.btn--tab:hover {
  background: rgba(255,255,255,0.55);
  color: var(--text);
}

.btn--tab.active {
  background: var(--tabActive);
  color: var(--text);
  border: 1px solid var(--border);
}

/* Tab bar */
.tabbar {
  display: inline-flex;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--tab);
  box-shadow: var(--shadow);
  margin: 0;                    /* was margin-bottom: 14px */
  align-self: flex-start;       /* prevents stretching */
}

/* ✅ IMPORTANT: hide non-active pages */
.tab-page { display: none; }
.tab-page.active { display: block; }

/* Controls row */
.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin: 8px 0;                /* tighter */
}

.control {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;             /* tighter */
}

label { font-size: 13px; color: var(--muted); }

select {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
  outline: none;
}

#chartSummary {
  margin: 6px 0 10px;           /* tighter */
  color: var(--muted);
  font-size: 14px;
}

/* Charts */
.chartBox {
  position: relative;

  /* was fixed 340px which can feel huge on small screens */
  height: clamp(240px, 42vh, 360px);

  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fafafa;
  box-shadow: var(--shadow);
  padding: 8px;                 /* tighter */
}

/* Wind page */
.windBox {
  position: relative;
  height: clamp(260px, 46vh, 420px);
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fafafa;
  box-shadow: var(--shadow);
  padding: 8px;
}

/* ---------- Summary panel formatting ---------- */
/* Make summary feel like it fits the screen and doesn't look "giant" */
#summaryPanel.active {
  /* fills remaining height nicely but won't force awkward whitespace */
  min-height: calc(100vh - 2 * var(--pagePad) - 64px);
}

/* Keep grids but tighten gaps/margins */
.summaryGrid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 10px;          /* was 12px */
  margin-top: 6px;
}

.summaryGrid2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;          /* was 12px */
  margin-top: 8px;    /* was 10px */
}

@media (max-width: 720px) {
  .summaryGrid2 { grid-template-columns: 1fr; }
}

/* Cards: smaller padding + more compact typography */
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
  padding: 10px;      /* was 12px */
}

.card h3 {
  margin: 0 0 4px;    /* tighter */
  font-size: 12.5px;  /* slightly smaller */
  color: var(--muted);
  font-weight: 600;
}

.kpi {
  font-size: 20px;    /* was 22px */
  font-weight: 700;
  line-height: 1.1;
}

.kpiSub {
  margin-top: 3px;
  font-size: 12.5px;
  color: var(--muted);
}

/* responsive spans */
.col-12 { grid-column: span 12; }
.col-6  { grid-column: span 6; }
.col-4  { grid-column: span 4; }
.col-3  { grid-column: span 3; }

@media (max-width: 900px) {
  .col-3 { grid-column: span 6; }
  .col-4 { grid-column: span 12; }
}

/* Summary auto-refresh status */
.summaryMeta {
  font-size: 12px;
  color: var(--muted);
  margin: 2px 0 6px;  /* was margin-bottom: 6px */
}

/* Canvas */
canvas { display: block; background: transparent; }