:root {
  --border:#e5e7eb;
  --muted:#6b7280;
  --bg:#ffffff;
  --bg2:#f8fafc;
  --ink:#0f172a;
  --brand:#2563eb;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

/* Header / Nav */
header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  background: #fff;
}
header a, header a.tab {
  text-decoration: none;
  color: var(--brand);
  padding: 6px 10px;
  border-radius: 8px;
}
header a.tab:hover { background: #eef2ff; }
header .brand { font-weight: 700; }

/* Layout */
main { padding: 16px; }
.muted { color: var(--muted); font-size: 0.92rem; }

/* Panels / Cards */
.panel, .load-panel, .card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  margin-top: 16px;
  background: #fff;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

/* Controls */
.controls { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.controls input[type="text"],
.controls input[type="password"],
.controls input[type="month"],
.controls input[type="file"],
.controls select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}
button {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
}
button:hover { background: var(--bg2); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--bg2);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  color: #111827;
}

/* Tables */
.table-wrap {
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-top: 10px;
  background: #fff;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
}
th, td {
  border-bottom: 1px solid #eef2f7;
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}
th { background: var(--bg2); position: sticky; top: 0; z-index: 1; }
.right { text-align: right; }

/* Quantity colors */
.qty-ok { color: #059669; }
.qty-low { color: #d97706; }
.qty-zero { color: #dc2626; }

/* Utility */
.hidden { display: none !important; }

/* === Global readability + touch targets === */
:root {
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --text: #0f172a;
  --muted: #475569;
  --border: #e5e7eb;
  --bg: #f8fafc;
  --accent: #0ea5e9;
}

html { font-size: 18px; } /* comfortable default */
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.45;
}

h1 { font-size: 1.75rem; margin: 0.6rem 0; }
h2 { font-size: 1.4rem; margin: 0.6rem 0; }
h3 { font-size: 1.15rem; margin: 0.5rem 0; }

.panel { max-width: 1100px; margin: 14px auto; background:#fff; border:1px solid var(--border); border-radius: 14px; padding: 16px; }
.controls { display:flex; gap: 10px; flex-wrap: wrap; align-items: center; }

button, .btn, input[type="file"], select, input[type="text"], input[type="password"], input[type="number"] {
  font: inherit;
  min-height: 44px; /* finger-friendly */
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  padding: 6px 12px;
}
button:hover, .btn:hover { background: #f1f5f9; }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }

.table-wrap { overflow: auto; border: 1px solid var(--border); border-radius: 12px; }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { position: sticky; top: 0; background: #f1f5f9; }
td[contenteditable="true"] { background: #fffbea; }

/* Floating guide button */
#gicaGuideFab {
  position: fixed; right: 16px; bottom: 16px; z-index: 1000;
  background: var(--accent); color: #fff; border: none; border-radius: 999px;
  width: 56px; height: 56px; box-shadow: 0 8px 20px rgba(2,132,199,.3);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 24px;
}
#gicaGuideFab:hover { filter: brightness(1.05); }

/* Guide overlay + tooltip */
.gica-overlay {
  position: fixed; inset: 0; background: rgba(15,23,42,.55); z-index: 999;
}
.gica-coach {
  position: fixed; z-index: 1001; background: #fff; color: var(--text);
  border: 1px solid var(--border); border-radius: 14px; padding: 14px; max-width: 420px;
  box-shadow: 0 10px 28px rgba(0,0,0,.12);
}
.gica-coach h4 { margin: 0 0 .4rem; font-size: 1.1rem; }
.gica-coach p { margin: .25rem 0 .75rem; color: var(--muted); }
.gica-coach .row { display:flex; gap:8px; justify-content:flex-end; }
.gica-coach .row button { min-width: 90px; }
.gica-highlight {
  position: absolute; border: 2px solid var(--accent); border-radius: 10px; pointer-events: none;
  box-shadow: 0 0 0 6px rgba(14,165,233,.25);
}