:root {
  --bg:     #0d0d0d;
  --card:   #1a1a1a;
  --card2:  #222222;
  --border: #333333;
  --accent: #e8f50a;
  --red:    #ff3d5a;
  --cyan:   #00d4ff;
  --green:  #39ff8f;
  --purple: #b44fff;
  --text:   #f0f0f0;
  --muted:  #888888;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Courier New", Consolas, monospace;
  min-height: 100vh;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.9rem 1.25rem;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.topnav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.topnav a:hover { color: var(--accent); }

.topnav .brand {
  color: var(--accent);
  font-weight: bold;
  margin-right: auto;
}

.content {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.25rem;
}

h1, h2, h3 { color: var(--accent); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: bold;
  background: var(--card2);
  border: 1px solid var(--border);
}
.status-dot {
  width: 0.6rem; height: 0.6rem; border-radius: 50%;
  background: var(--muted);
}
.status-idle .status-dot         { background: var(--muted); }
.status-connecting .status-dot   { background: var(--cyan); animation: pulse 1s infinite; }
.status-connected .status-dot    { background: var(--green); }
.status-disconnected .status-dot { background: var(--red); }
.status-offline .status-dot      { background: var(--red); }

@keyframes pulse { 50% { opacity: 0.3; } }

.controls { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }

button {
  font-family: inherit;
  font-size: 1rem;
  font-weight: bold;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
}
button:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-start { background: var(--green); color: #06210f; }
.btn-stop  { background: var(--red); color: #2a0009; }

.btn-delete {
  background: transparent;
  color: var(--muted);
  padding: 0.3rem 0.5rem;
  font-size: 1rem;
}
.btn-delete:hover { color: var(--red); }

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.tile {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 0.5rem;
  text-align: center;
}
.tile .label { color: var(--muted); font-size: 0.7rem; letter-spacing: 0.05em; }
.tile .value { font-size: 1.9rem; font-weight: bold; margin-top: 0.25rem; }
.tile .unit  { color: var(--muted); font-size: 0.8rem; }

canvas#sparkline {
  width: 100%;
  height: 160px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
  margin-bottom: 0.75rem;
}
.chart-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem;
  height: 260px;
  position: relative;
}
.chart-card.wide {
  grid-column: 1 / -1;
  height: 320px;
}

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { color: var(--muted); font-weight: normal; font-size: 0.75rem; }
tr:hover td { background: var(--card2); }
a.row-link { color: var(--text); text-decoration: none; display: block; }
a.row-link:hover { color: var(--accent); }

.zone-bar-row { display: flex; align-items: center; gap: 0.6rem; margin: 0.4rem 0; font-size: 0.85rem; }
.zone-bar-row .zone-label { width: 150px; color: var(--muted); flex-shrink: 0; }
.zone-bar-track { flex: 1; background: var(--card2); border-radius: 4px; overflow: hidden; height: 10px; }
.zone-bar-fill { height: 100%; background: var(--accent); }
.zone-bar-pct { width: 50px; text-align: right; flex-shrink: 0; }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
}
.metric-grid .item { background: var(--card2); border-radius: 8px; padding: 0.6rem 0.8rem; }
.metric-grid .item .label { color: var(--muted); font-size: 0.72rem; }
.metric-grid .item .value { font-size: 1.2rem; font-weight: bold; }

.calendar-nav { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.calendar-nav a { color: var(--accent); text-decoration: none; font-size: 1.2rem; }

form.profile-form { display: flex; flex-direction: column; gap: 0.9rem; max-width: 320px; }
form.profile-form label { display: flex; flex-direction: column; gap: 0.3rem; color: var(--muted); font-size: 0.8rem; }
form.profile-form input, form.profile-form select {
  font-family: inherit;
  background: var(--card2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem;
  border-radius: 6px;
  font-size: 1rem;
}
form.profile-form button { align-self: flex-start; background: var(--accent); color: #1a1a00; }

img.report-img, img.calendar-img { max-width: 100%; border-radius: 10px; border: 1px solid var(--border); }

.muted { color: var(--muted); }
.empty-state { color: var(--muted); text-align: center; padding: 2rem 0; }