/* ============================================
   ESP32 POWER MONITOR DASHBOARD — STYLESHEET
   Premium Dark Theme with Glassmorphism
   ============================================ */

/* ---------- CSS VARIABLES ---------- */
:root {
  /* Background */
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(24, 33, 52, 0.85);
  --bg-sidebar: rgba(10, 14, 26, 0.95);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

  /* Text */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Accent Colors */
  --voltage-color: #38bdf8;
  --voltage-glow: rgba(56, 189, 248, 0.3);
  --voltage-gradient: linear-gradient(135deg, #38bdf8, #0ea5e9);

  --current-color: #a78bfa;
  --current-glow: rgba(167, 139, 250, 0.3);
  --current-gradient: linear-gradient(135deg, #a78bfa, #8b5cf6);

  --power-color: #fb923c;
  --power-glow: rgba(251, 146, 60, 0.3);
  --power-gradient: linear-gradient(135deg, #fb923c, #f97316);

  --energy-color: #34d399;
  --energy-glow: rgba(52, 211, 153, 0.3);
  --energy-gradient: linear-gradient(135deg, #34d399, #10b981);

  /* Status */
  --success: #22c55e;
  --warning: #eab308;
  --danger: #ef4444;

  /* Sizing */
  --sidebar-width: 240px;
  --sidebar-collapsed: 68px;
  --header-height: 64px;
  --border-radius: 16px;
  --border-radius-sm: 10px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- RESET & BASE ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 14px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Animated background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 600px 400px at 10% 20%, rgba(56, 189, 248, 0.06), transparent),
    radial-gradient(ellipse 500px 500px at 80% 80%, rgba(167, 139, 250, 0.05), transparent),
    radial-gradient(ellipse 400px 300px at 50% 50%, rgba(251, 146, 60, 0.03), transparent);
  pointer-events: none;
  z-index: 0;
}

/* ========== SIDEBAR ========== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width var(--transition-smooth), transform var(--transition-smooth);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 20px;
  border-bottom: 1px solid var(--glass-border);
}

.logo-icon {
  font-size: 24px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #38bdf8, #a78bfa);
  border-radius: 12px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, #38bdf8, #a78bfa);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 12px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 13px;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.nav-item.active {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(167, 139, 250, 0.12));
  color: var(--text-primary);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: linear-gradient(180deg, #38bdf8, #a78bfa);
  border-radius: 0 4px 4px 0;
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--glass-border);
}

.amd-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.08), rgba(251, 146, 60, 0.08));
  border: 1px solid rgba(239, 68, 68, 0.15);
  border-radius: var(--border-radius-sm);
}

.amd-badge-icon {
  font-weight: 900;
  font-size: 12px;
  color: #ef4444;
  background: rgba(239, 68, 68, 0.15);
  padding: 4px 8px;
  border-radius: 6px;
  letter-spacing: 1px;
}

.amd-badge-info {
  display: flex;
  flex-direction: column;
}

.amd-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.amd-model {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ========== MAIN CONTENT ========== */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  position: relative;
  z-index: 1;
  transition: margin-left var(--transition-smooth);
}

/* ========== HEADER ========== */
.top-header {
  position: sticky;
  top: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 50;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
}

.header-title-group h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.header-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 400;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.connection-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse-dot 2s ease-in-out infinite;
}

.status-dot.offline {
  background: var(--danger);
  animation: none;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
}

.header-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--glass-bg);
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid var(--glass-border);
}

/* ========== SECTIONS ========== */
.section {
  display: none;
  padding: 24px 28px;
  animation: fadeInSection 0.4s ease;
}

.section.active {
  display: block;
}

@keyframes fadeInSection {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-header-row {
  margin-bottom: 24px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
}

.section-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ========== STATUS BAR ========== */
.status-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.status-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.status-chip.online {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.status-chip.normal {
  background: rgba(56, 189, 248, 0.08);
  border-color: rgba(56, 189, 248, 0.2);
  color: var(--voltage-color);
}

.status-chip.warning {
  background: rgba(234, 179, 8, 0.08);
  border-color: rgba(234, 179, 8, 0.2);
  color: var(--warning);
}

.status-chip.danger {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.chip-icon {
  width: 14px;
  height: 14px;
}

/* ========== GAUGE CARDS GRID ========== */
.gauge-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.gauge-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 20px;
  backdrop-filter: blur(12px);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.gauge-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.voltage-card::before { background: var(--voltage-gradient); }
.current-card::before { background: var(--current-gradient); }
.power-card::before { background: var(--power-gradient); }
.energy-card::before { background: var(--energy-gradient); }

.gauge-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  box-shadow: var(--glass-shadow);
}

.voltage-card:hover { box-shadow: 0 8px 40px rgba(56, 189, 248, 0.1); }
.current-card:hover { box-shadow: 0 8px 40px rgba(167, 139, 250, 0.1); }
.power-card:hover { box-shadow: 0 8px 40px rgba(251, 146, 60, 0.1); }
.energy-card:hover { box-shadow: 0 8px 40px rgba(52, 211, 153, 0.1); }

.gauge-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.gauge-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.gauge-icon {
  width: 16px;
  height: 16px;
}

.voltage-card .gauge-icon { color: var(--voltage-color); }
.current-card .gauge-icon { color: var(--current-color); }
.power-card .gauge-icon { color: var(--power-color); }
.energy-card .gauge-icon { color: var(--energy-color); }

.gauge-unit {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--glass-bg);
  padding: 2px 8px;
  border-radius: 6px;
  border: 1px solid var(--glass-border);
}

/* Radial Gauge */
.gauge-body {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 8px 0;
}

.radial-gauge {
  position: relative;
  width: 140px;
  height: 140px;
}

.gauge-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.gauge-track {
  fill: none;
  stroke: rgba(255, 255, 255, 0.04);
  stroke-width: 10;
  stroke-linecap: round;
}

.gauge-fill {
  fill: none;
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 534;
  stroke-dashoffset: 534;
  transition: stroke-dashoffset 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  filter: drop-shadow(0 0 8px var(--voltage-glow));
}

.voltage-fill { stroke: var(--voltage-color); filter: drop-shadow(0 0 8px var(--voltage-glow)); }
.current-fill { stroke: var(--current-color); filter: drop-shadow(0 0 8px var(--current-glow)); }
.power-fill { stroke: var(--power-color); filter: drop-shadow(0 0 8px var(--power-glow)); }

.gauge-value-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.gauge-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}

.voltage-card .gauge-value { color: var(--voltage-color); }
.current-card .gauge-value { color: var(--current-color); }
.power-card .gauge-value { color: var(--power-color); }

.gauge-value-unit {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  display: block;
  margin-top: 4px;
}

/* Energy card special layout */
.energy-body {
  flex-direction: column;
  gap: 8px;
  padding: 20px 0;
}

.energy-display {
  text-align: center;
}

.energy-big-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 36px;
  font-weight: 700;
  color: var(--energy-color);
  line-height: 1;
}

.energy-big-unit {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 4px;
}

.energy-cost {
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.cost-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cost-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  font-weight: 600;
  color: var(--energy-color);
}

/* Gauge footer */
.gauge-footer {
  display: flex;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--glass-border);
  margin-top: 12px;
}

.gauge-stat {
  text-align: center;
  flex: 1;
}

.stat-label {
  display: block;
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.stat-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.gauge-stat.peak .stat-value {
  color: var(--danger);
}

/* ========== CHARTS ========== */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  backdrop-filter: blur(12px);
  overflow: hidden;
  transition: all var(--transition-smooth);
}

.chart-card:hover {
  box-shadow: var(--glass-shadow);
}

.chart-card.wide {
  grid-column: 1 / -1;
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--glass-border);
}

.chart-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.voltage-dot { background: var(--voltage-color); box-shadow: 0 0 8px var(--voltage-glow); }
.current-dot { background: var(--current-color); box-shadow: 0 0 8px var(--current-glow); }
.power-dot { background: var(--power-color); box-shadow: 0 0 8px var(--power-glow); }
.energy-dot { background: var(--energy-color); box-shadow: 0 0 8px var(--energy-glow); }

.chart-actions {
  display: flex;
  gap: 4px;
}

.chart-btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chart-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.chart-btn.active {
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.3);
  color: var(--voltage-color);
}

.chart-body {
  padding: 16px 20px;
  height: 220px;
}

.chart-body.tall {
  height: 300px;
}

/* ========== PEAK LOAD ========== */
.peak-section {
  margin-bottom: 24px;
}

.peak-card {
  background: var(--bg-card);
  border: 1px solid rgba(239, 68, 68, 0.15);
  border-radius: var(--border-radius);
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.peak-header {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(239, 68, 68, 0.04);
}

.peak-header h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--danger);
}

.peak-icon {
  width: 18px;
  height: 18px;
  color: var(--danger);
}

.peak-body {
  padding: 20px;
}

.peak-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.peak-stat {
  text-align: center;
  padding: 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
}

.peak-stat-label {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.peak-stat-value {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.peak-stat-value.highlight {
  color: var(--danger);
}

.peak-stat-time {
  display: block;
  font-size: 10px;
  color: var(--text-muted);
}

/* ========== ANALYTICS ========== */
.analytics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* ========== ENERGY AUDIT ========== */
.energy-audit-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.audit-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 20px;
  backdrop-filter: blur(12px);
  transition: all var(--transition-smooth);
}

.audit-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--glass-shadow);
}

.audit-card.total-card {
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.08), rgba(16, 185, 129, 0.04));
  border-color: rgba(52, 211, 153, 0.2);
}

.audit-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.audit-icon svg {
  width: 22px;
  height: 22px;
}

.today-icon {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(56, 189, 248, 0.05));
  color: var(--voltage-color);
}

.week-icon {
  background: linear-gradient(135deg, rgba(167, 139, 250, 0.15), rgba(167, 139, 250, 0.05));
  color: var(--current-color);
}

.month-icon {
  background: linear-gradient(135deg, rgba(251, 146, 60, 0.15), rgba(251, 146, 60, 0.05));
  color: var(--power-color);
}

.total-icon {
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.2), rgba(52, 211, 153, 0.08));
  color: var(--energy-color);
}

.audit-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.audit-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.audit-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.audit-value.big {
  font-size: 24px;
  color: var(--energy-color);
}

.audit-cost {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.energy-trend-chart {
  margin-top: 0;
}

/* ========== REPORTS ========== */
.reports-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.report-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 28px;
  text-align: center;
  backdrop-filter: blur(12px);
  transition: all var(--transition-smooth);
}

.report-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow);
}

.report-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.report-icon svg {
  width: 26px;
  height: 26px;
}

.report-icon.daily {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(56, 189, 248, 0.05));
  color: var(--voltage-color);
}

.report-icon.monthly {
  background: linear-gradient(135deg, rgba(167, 139, 250, 0.15), rgba(167, 139, 250, 0.05));
  color: var(--current-color);
}

.report-icon.full {
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.15), rgba(52, 211, 153, 0.05));
  color: var(--energy-color);
}

.report-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.report-card p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 20px;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(167, 139, 250, 0.12));
  border: 1px solid rgba(56, 189, 248, 0.2);
  color: var(--text-primary);
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: 'Inter', sans-serif;
}

.download-btn svg {
  width: 16px;
  height: 16px;
}

.download-btn:hover {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(167, 139, 250, 0.2));
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.15);
}

/* ========== DATA TABLE ========== */
.table-container {
  overflow-x: auto;
  padding: 16px 20px 20px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.data-table thead th {
  text-align: left;
  padding: 12px 16px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.02);
}

.data-table tbody td {
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

.data-table .status-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
}

.status-badge.normal {
  background: rgba(34, 197, 94, 0.1);
  color: var(--success);
}

.status-badge.warning {
  background: rgba(234, 179, 8, 0.1);
  color: var(--warning);
}

.status-badge.danger {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

/* ========== SETTINGS ========== */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.settings-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 24px;
  backdrop-filter: blur(12px);
}

.settings-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--glass-border);
}

.setting-row {
  margin-bottom: 16px;
}

.setting-row label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.setting-row input,
.setting-row select {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  transition: all var(--transition-fast);
  outline: none;
}

.setting-row input:focus,
.setting-row select:focus {
  border-color: var(--voltage-color);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.setting-row select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.save-settings-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: linear-gradient(135deg, var(--energy-color), #10b981);
  border: none;
  color: #0a0e1a;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: 8px;
  font-family: 'Inter', sans-serif;
}

.save-settings-btn svg {
  width: 16px;
  height: 16px;
}

.save-settings-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(52, 211, 153, 0.3);
}

/* ========== TOAST ========== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  backdrop-filter: blur(12px);
  animation: toastIn 0.3s ease;
  font-size: 13px;
  font-weight: 500;
  min-width: 280px;
  box-shadow: var(--glass-shadow);
}

.toast.success { border-color: rgba(34, 197, 94, 0.3); }
.toast.warning { border-color: rgba(234, 179, 8, 0.3); }
.toast.error { border-color: rgba(239, 68, 68, 0.3); }

.toast.fade-out {
  animation: toastOut 0.3s ease forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(100px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100px); }
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1200px) {
  .gauge-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .peak-stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .energy-audit-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reports-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .settings-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
  }
  .menu-toggle {
    display: block;
  }
  .charts-grid {
    grid-template-columns: 1fr;
  }
  .analytics-grid {
    grid-template-columns: 1fr;
  }
  .settings-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .gauge-grid {
    grid-template-columns: 1fr;
  }
  .energy-audit-grid {
    grid-template-columns: 1fr;
  }
  .peak-stat-grid {
    grid-template-columns: 1fr;
  }
  .reports-grid {
    grid-template-columns: 1fr;
  }
  .top-header {
    padding: 0 14px;
    flex-wrap: wrap;
    height: auto;
    padding: 12px 14px;
    gap: 10px;
  }
  .section {
    padding: 16px 14px;
  }
  .header-title-group h1 {
    font-size: 15px;
  }
}