/* ── HEADER & NAVIGATION ── */
header {
  height: 56px;
  min-height: 56px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--bg-border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 32px;
  z-index: 100;
  flex-shrink: 0;
}

.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-icon {
  width: 32px; height: 32px;
  background: var(--accent);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; color: #fff; font-size: 16px;
  box-shadow: var(--shadow-subtle);
}
.logo-text { font-size: 18px; font-weight: 700; letter-spacing: -0.5px; }
.logo-sub { font-size: 10px; color: var(--accent); font-weight: 700; letter-spacing: 0.5px; opacity: 0.9; }

.nav-tabs { 
  display: flex; 
  height: 36px; 
  align-items: center; 
  gap: 4px; 
  background: rgba(0,0,0,0.15);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--bg-border);
}
.nav-tab {
  background: transparent; 
  border: none;
  padding: 6px 16px; 
  color: var(--text-secondary);
  font-weight: 600; 
  font-size: 13px;
  cursor: pointer; 
  border-radius: var(--radius-sm); 
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
}
.nav-tab:hover { color: var(--text-primary); }
.nav-tab.active { 
  background: var(--bg-panel); 
  color: var(--accent); 
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.header-status { margin-left: auto; display: flex; align-items: center; gap: 10px; background: rgba(0,0,0,0.2); padding: 6px 14px; border-radius: 20px; border: 1px solid var(--bg-border); }
.status-dot { width: 8px; height: 8px; background: var(--accent2); border-radius: 50%; }
.status-dot.offline { background: var(--accent-err); }
#status-text { font-size: 12px; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }

/* ── KPI RIBBON (GridMind style) ── */
.kpi-ribbon {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--bg-border);
  padding: 10px 24px;
  gap: 1px;
}
.kpi-item {
  display: flex;
  flex-direction: column;
  padding: 0 16px;
  border-right: 1px solid var(--bg-border);
}
.kpi-item:last-child { border-right: none; }
.kpi-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 2px;
}
.kpi-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--mono);
}
.kpi-value.accent-blue { color: var(--accent); }
.kpi-value.accent-green { color: var(--accent2); }
.kpi-value.accent-yellow { color: var(--accent3); }

/* ── CARDS & PANELS ── */
.card {
  background: var(--bg-panel);
  border-radius: var(--radius-lg);
  border: 1px solid var(--bg-border);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-subtle);
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.card-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-title::before {
  content: '';
  width: 4px;
  height: 14px;
  background: var(--accent);
  border-radius: 2px;
}

/* ── BUTTONS ── */
.btn {
  padding: 12px 20px;
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
}
.btn:hover { background: var(--bg-border); border-color: var(--text-muted); }
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
}
.btn-primary:hover { background: #3367d6; } /* Darker Google Blue */

/* Toasts */
.toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 12px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 2000;
}
.toast.show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }