/* ── Variables ──────────────────────────────────────── */
:root {
  --teal:        #1e6e82;
  --teal-dark:   #155a6b;
  --teal-light:  #d6eaf0;
  --orange:      #d4622a;
  --grey-bg:     #e8edf0;
  --grey-row:    #d0d8de;
  --text-dark:   #1a1a1a;
  --text-mid:    #444;
  --text-light:  #ffffff;
  --border:      #b0bec5;
  --font-main:   'Georgia', serif;
  --font-mono:   'Courier New', monospace;
}

/* ── Reset ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-main);
  background: #f0f4f7;
  color: var(--text-dark);
  min-height: 100vh;
  display: flex;
  align-items: stretch;
}

/* ── Dashboard grid ─────────────────────────────────── */
.dashboard {
  display: grid;
  grid-template-columns: 340px 1fr;
  width: 100%;
  min-height: 100vh;
  background: #fff;
  box-shadow: 0 4px 24px rgba(0,0,0,.12);
}

/* ── LEFT PANEL ─────────────────────────────────────── */
.left-panel {
  background: #fff;
  padding: 24px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  border-right: 2px solid var(--border);
}

/* Logo */
.logo-wrap {
  padding-bottom: 8px;
}
.logo-text {
  font-size: 2.4rem;
  font-weight: 900;
  font-style: italic;
  letter-spacing: 2px;
  color: var(--text-dark);
  font-family: 'Georgia', serif;
  text-transform: uppercase;
}
.logo-underline {
  height: 3px;
  background: var(--text-dark);
  width: 80%;
  margin: 2px 0 4px;
}
.logo-sub {
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-mid);
}

/* Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.data-table thead tr {
  background: var(--teal);
  color: var(--text-light);
}
.data-table thead th {
  padding: 8px 10px;
  text-align: center;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: .5px;
}
.data-table tbody tr:nth-child(odd)  { background: var(--grey-bg); }
.data-table tbody tr:nth-child(even) { background: var(--grey-row); }
.data-table tbody td {
  padding: 7px 10px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.data-table tbody td:first-child {
  text-align: right;
  font-weight: 600;
  color: var(--text-mid);
  padding-right: 14px;
}

/* Site info — header spans 2 cols */
.site-table thead th { text-align: center; }

/* Period tabs */
.period-tabs {
  display: flex;
  gap: 6px;
  margin-top: 4px;
}
.tab-btn {
  flex: 1;
  padding: 9px 4px;
  border: none;
  background: var(--teal);
  color: var(--text-light);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: .5px;
  cursor: pointer;
  transition: background .2s, transform .1s;
  border-radius: 2px;
}
.tab-btn:hover  { background: var(--teal-dark); }
.tab-btn.active { background: var(--orange); }

/* Timestamp */
.timestamp {
  font-size: 0.72rem;
  color: #888;
  margin-top: auto;
  text-align: center;
}

/* ── RIGHT PANEL ────────────────────────────────────── */
.right-panel {
  padding: 28px 32px 24px;
  display: flex;
  flex-direction: column;
  background: #fff;
}

.chart-header {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.chart-title {
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--text-dark);
  font-family: var(--font-main);
}

.legend {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-mid);
}
.legend-dot {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 2px;
  margin-right: 4px;
  vertical-align: middle;
}
.legend-dot.produced { background: var(--teal); }
.legend-dot.consumed { background: var(--orange); }

.chart-wrap {
  flex: 1;
  position: relative;
  min-height: 300px;
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 700px) {
  .dashboard { grid-template-columns: 1fr; }
  .right-panel { padding: 20px 16px; }
  .left-panel { border-right: none; border-bottom: 2px solid var(--border); }
}