:root {
  --bg: var(--tg-theme-bg-color, #070b14);
  --bg-card: var(--tg-theme-secondary-bg-color, rgba(18, 26, 44, 0.85));
  --bg-card-hover: rgba(26, 38, 64, 0.95);
  --border: rgba(56, 189, 248, 0.15);
  --border-active: rgba(56, 189, 248, 0.4);
  --text-main: var(--tg-theme-text-color, #f8fafc);
  --text-muted: var(--tg-theme-hint-color, #94a3b8);
  --cyan: var(--tg-theme-button-color, #00f2fe);
  --cyan-glow: rgba(0, 242, 254, 0.25);
  --emerald: #10b981;
  --emerald-glow: rgba(16, 185, 129, 0.25);
  --amber: #f59e0b;
  --amber-glow: rgba(245, 158, 11, 0.25);
  --rose: #f43f5e;
  --rose-glow: rgba(244, 63, 94, 0.25);
  --purple: #8b5cf6;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg);
  background-image: 
    radial-gradient(at 0% 0%, rgba(0, 242, 254, 0.08) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  padding: 16px;
}

.app-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Header */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  font-size: 24px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  box-shadow: 0 0 15px var(--cyan-glow);
}

.brand h1 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(to right, #ffffff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sub-brand {
  font-size: 12px;
  color: var(--cyan);
  font-family: var(--font-mono);
  margin-top: 2px;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

.clock-display {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: #e2e8f0;
  background: rgba(15, 23, 42, 0.6);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.refresh-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(56, 189, 248, 0.1);
  color: var(--cyan);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.refresh-btn:hover {
  background: rgba(56, 189, 248, 0.2);
  border-color: var(--cyan);
  box-shadow: 0 0 12px var(--cyan-glow);
}

/* Tabs */
.app-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-main);
  border-color: var(--border-active);
}

.tab-btn.active {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(139, 92, 246, 0.15));
  color: #fff;
  border-color: var(--cyan);
  box-shadow: 0 0 15px var(--cyan-glow);
}

.tab-content {
  display: none;
  flex-direction: column;
  gap: 16px;
}

.tab-content.active {
  display: flex;
}

/* Top KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.kpi-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.kpi-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-active);
}

.kpi-icon {
  font-size: 24px;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
}

.glow-cyan .kpi-icon { border: 1px solid var(--cyan); color: var(--cyan); box-shadow: 0 0 15px var(--cyan-glow); }
.glow-emerald .kpi-icon { border: 1px solid var(--emerald); color: var(--emerald); box-shadow: 0 0 15px var(--emerald-glow); }
.glow-amber .kpi-icon { border: 1px solid var(--amber); color: var(--amber); box-shadow: 0 0 15px var(--amber-glow); }
.glow-rose .kpi-icon { border: 1px solid var(--rose); color: var(--rose); box-shadow: 0 0 15px var(--rose-glow); }

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

.kpi-value {
  font-size: 22px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: #fff;
  margin: 2px 0;
}

.kpi-value small {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted);
}

.kpi-value.highlight {
  color: #38bdf8;
}

.kpi-sub {
  font-size: 11px;
  color: var(--text-muted);
}

/* Status Banner */
.status-banner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  font-size: 13px;
}

.banner-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.banner-icon {
  font-size: 16px;
}

.text-success { color: #34d399; }
.text-warning { color: #f59e0b; }
.text-danger { color: #f43f5e; }

/* Section Container */
.section-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.section-header h2 {
  font-size: 17px;
  font-weight: 600;
  color: #f1f5f9;
}

.section-tag {
  background: rgba(56, 189, 248, 0.1);
  color: var(--cyan);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-family: var(--font-mono);
}

/* Devices Grid */
.devices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.device-card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all 0.2s ease;
}

.device-card.on {
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.08);
}

.device-card.off {
  opacity: 0.8;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.device-main-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.device-badge-icon {
  font-size: 22px;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.device-names h3 {
  font-size: 15px;
  font-weight: 600;
}

.device-meta {
  display: flex;
  gap: 6px;
  margin-top: 2px;
}

.room-badge, .type-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.room-badge {
  background: rgba(255, 255, 255, 0.08);
  color: #94a3b8;
}

.type-badge {
  background: rgba(56, 189, 248, 0.1);
  color: var(--cyan);
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #334155;
  transition: .3s;
  border-radius: 26px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--emerald);
  box-shadow: 0 0 10px var(--emerald-glow);
}

input:checked + .slider:before {
  transform: translateX(22px);
}

.metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background: rgba(0, 0, 0, 0.2);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.metric-value {
  font-size: 13px;
  font-family: var(--font-mono);
  font-weight: 600;
  color: #e2e8f0;
}

/* Utility Card */
.utility-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.meter-group {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.meter-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.meter-title {
  font-size: 15px;
  font-weight: 600;
}

.meter-rate {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.rate-input {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--cyan);
  padding: 3px 6px;
  width: 65px;
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: right;
}

.meter-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 12px;
  align-items: center;
}

@media (max-width: 640px) {
  .meter-inputs {
    grid-template-columns: 1fr;
  }
}

.input-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.input-col label {
  font-size: 11px;
  color: var(--text-muted);
}

.input-col input {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: #fff;
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 14px;
}

.meter-calc {
  background: rgba(0, 0, 0, 0.2);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.calc-label {
  font-size: 10px;
  color: var(--text-muted);
}

.calc-val {
  font-size: 13px;
  font-family: var(--font-mono);
  color: #fff;
}

.utility-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-large {
  padding: 14px 24px;
  font-size: 15px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), #2563eb);
  color: #070b14;
  box-shadow: 0 0 15px var(--cyan-glow);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #f1f5f9;
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-warning {
  background: linear-gradient(135deg, var(--amber), #d97706);
  color: #070b14;
}

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
  background: rgba(244, 63, 94, 0.25);
}

/* SETTINGS (A-Z) STYLES */
.settings-groups-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.setting-group-card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.setting-group-header {
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.setting-group-title {
  font-size: 15px;
  font-weight: 600;
  color: #f8fafc;
}

.setting-items-list {
  display: flex;
  flex-direction: column;
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  gap: 16px;
}

.setting-item:last-child {
  border-bottom: none;
}

.setting-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
}

.setting-label {
  font-size: 14px;
  font-weight: 500;
  color: #f1f5f9;
}

.setting-desc {
  font-size: 12px;
  color: var(--text-muted);
}

.setting-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.setting-input {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: #fff;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  min-width: 90px;
  text-align: right;
}

.setting-input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 10px var(--cyan-glow);
}

.setting-select {
  background: #0f172a;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: #fff;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.setting-unit {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  width: 45px;
}

.settings-floating-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(16px);
  border: 1px solid var(--cyan);
  box-shadow: 0 0 20px var(--cyan-glow);
  padding: 14px 20px;
  border-radius: var(--radius-md);
  margin-top: 10px;
}

.save-status-text {
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--cyan);
}

/* Infographic Preview */
.infographic-preview-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}

.infographic-image {
  width: 100%;
  max-width: 960px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  background: #0b0f19;
}

.infographic-footer {
  width: 100%;
  max-width: 960px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
}

.chart-card {
  background: rgba(0,0,0,0.3);
  padding: 16px;
  border-radius: var(--radius-md);
}

.loader {
  padding: 30px;
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 13px;
}