/* ─── Design Tokens ──────────────────────────────────────────────────────── */
:root {
  --color-primary:   #1E4144;
  --color-secondary: #47797C;
  --color-accent:    #62A8AC;
  --color-highlight: #338FFF;
  --color-bg:        #111314;
  --color-surface:   #181c1d;
  --color-border:    #2a2e2f;
}

/* ─── Base ───────────────────────────────────────────────────────────────── */
* { box-sizing: border-box; }

body {
  background-color: var(--color-bg);
  color: #f0f0f0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
}

/* ─── Site Navbar ────────────────────────────────────────────────────────── */
.site-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #0d1011;
  border-bottom: 1px solid #1a1e1f;
  padding: 0 1.5rem;
  height: 44px;
}

.site-brand {
  font-size: 0.9rem;
  font-weight: 700;
  color: #f0f0f0;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.site-brand:hover { color: var(--color-accent); }

.site-tabs {
  display: flex;
  gap: 0;
  height: 100%;
}

.site-tab {
  display: flex;
  align-items: center;
  padding: 0 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: #888;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  height: 100%;
}

.site-tab:hover { color: #ccc; }
.site-tab.active { color: var(--color-accent); border-bottom-color: var(--color-accent); }

/* ─── Sub-page links (inside page navbar) ───────────────────────────────── */
.sub-nav {
  display: flex;
  gap: 0.25rem;
}

.sub-nav-link {
  font-size: 0.8rem;
  font-weight: 600;
  color: #666;
  text-decoration: none;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
}

.sub-nav-link:hover  { color: #ccc; background: rgba(255,255,255,0.05); }
.sub-nav-link.active { color: var(--color-accent); background: rgba(98,168,172,0.12); }

/* ─── Navbar ─────────────────────────────────────────────────────────────── */
.navbar {
  background-color: var(--color-primary);
  border-bottom: 2px solid var(--color-secondary);
}

/* ─── Controls Bar ───────────────────────────────────────────────────────── */
.controls-bar {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.form-label-inline {
  color: #ccc;
  font-size: 0.85rem;
  font-weight: 600;
}

.controls-bar .form-select,
.controls-bar .form-control {
  background-color: #222628;
  color: #f0f0f0;
  border: 1px solid var(--color-secondary);
  font-size: 0.85rem;
}

.controls-bar .form-select option {
  background-color: #222628;
}

.controls-bar .form-select:focus,
.controls-bar .form-control:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 0.2rem rgba(98, 168, 172, 0.2);
  background-color: #222628;
  color: #f0f0f0;
}

.controls-bar .form-control::placeholder {
  color: #666;
}

/* ─── Stats Bar ──────────────────────────────────────────────────────────── */
.stats-bar {
  background-color: var(--color-primary);
  border-bottom: 1px solid var(--color-secondary);
}

.stat-label {
  display: block;
  color: var(--color-accent);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.stat-value {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
}

/* ─── Chart Section ──────────────────────────────────────────────────────── */
.chart-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  min-height: 120px;
}

.chart-title {
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}