* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #8b5cf6;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --dark: #0f172a;
  --dark-card: #1e293b;
  --gray: #64748b;
  --light: #f1f5f9;
  --border: #e2e8f0;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-lg: rgba(0, 0, 0, 0.15);
}

body {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: var(--dark);
  font-family:
    Inter,
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  overflow-x: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

img,
button {
  display: block;
}

.header {
  background: white;
  box-shadow: 0 4px 20px var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-content {
  max-width: 1600px;
  margin: 0 auto;
  padding: 20px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.refresh-btn {
  border: none;
  border-radius: 14px;
  padding: 12px 18px;
  background: var(--primary);
  color: white;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease;
}

.refresh-btn:hover {
  transform: translateY(-1px);
  background: var(--primary-dark);
}

.logo {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
}

.logo-text h1,
.logo-text p {
  margin: 0;
}

.logo-text h1 {
  font-size: 1.5rem;
}

.logo-text p {
  color: var(--gray);
}

.main-content {
  max-width: 1600px;
  margin: 30px auto 60px;
  padding: 0 30px;
  display: grid;
  gap: 30px;
}

.main-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
}

.panel,
.card,
.device-card,
.info-card,
.empty-state,
.log-item,
.timeline-item,
.device-card-header,
.device-info-grid,
.status-card {
  background: white;
  border-radius: 24px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.08);
}

.panel,
.card,
.device-card,
.info-card,
.empty-state,
.timeline-item,
.log-item {
  padding: 16px;
}

.device-card {
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.device-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.12);
}

.panel {
  overflow: hidden;
}

#deviceList,
#redisDevicesList,
#imeiMappingsList,
.device-list {
  display: grid;
  gap: 15px;
  max-height: 600px;
  overflow-y: auto;
  padding-right: 5px;
}

.device-card {
  background: linear-gradient(135deg, #f8fafc, #ffffff);
  border: 2px solid var(--border);
  padding: 20px;
  border-radius: 16px;
  cursor: default;
  position: relative;
  overflow: hidden;
}

.device-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: var(--success);
}

.device-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
  border-color: var(--primary);
}

.panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}

.panel-title h2 {
  font-size: 1.2rem;
}

.button-group,
.actions,
.command-row,
.device-info-grid,
.status-grid,
.metrics-grid {
  display: grid;
  gap: 12px;
}

.command-row {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  align-items: start;
  gap: 10px;
}

.button-group {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.btn,
.btn-primary,
.btn-secondary,
.btn-success,
.btn-warning,
.btn-danger {
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.btn:hover,
.btn-primary:hover,
.btn-success:hover,
.btn-warning:hover,
.btn-danger:hover,
.btn-secondary:hover {
  transform: translateY(-1px);
}

.btn-primary,
.btn-success,
.btn-warning,
.btn-danger {
  color: white;
}

.btn-primary {
  background: var(--primary);
  box-shadow: 0 16px 32px rgba(99, 102, 241, 0.18);
}

.btn-success {
  background: var(--success);
}

.btn-warning {
  background: var(--warning);
}

.btn-danger {
  background: var(--danger);
}

.btn-secondary {
  background: transparent;
  color: var(--dark);
  border: 1px solid var(--border);
}

.tabs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.tab {
  cursor: pointer;
  padding: 10px 18px;
  border-radius: 16px;
  color: var(--gray);
  background: rgba(255, 255, 255, 0.7);
  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.tab.active,
.tab:hover {
  color: var(--dark);
  background: white;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.08);
}

.tab-content {
  display: none;
}

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

.status-grid,
.metrics-grid,
.device-info-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.status-card,
.metric-card,
.info-card,
.log-item,
.timeline-item,
.device-card {
  border: 1px solid rgba(226, 232, 240, 0.8);
}

.status-card {
  padding: 20px;
}

.status-card-header {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.status-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  color: white;
}

.status-card-icon.primary {
  background: var(--primary);
}

.status-card-icon.success {
  background: var(--success);
}

.status-card-icon.warning {
  background: var(--warning);
}

.status-card-icon.danger {
  background: var(--danger);
}

.status-badge,
.log-type,
.device-card-arrow,
.timeline-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.status-badge {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}

.status-badge.success {
  background: #dcfce7;
  color: #166534;
}

.status-badge.warning {
  background: #fef3c7;
  color: #92400e;
}

.status-badge.danger {
  background: #fee2e2;
  color: #991b1b;
}

.status-card.success .status-card-icon,
.timeline-dot.success {
  background: var(--success);
}

.status-card.warning .status-card-icon,
.timeline-dot.warning {
  background: var(--warning);
}

.status-card.danger .status-card-icon,
.timeline-dot.danger {
  background: var(--danger);
}

.metric-card,
.log-item,
.info-card,
.empty-state,
.timeline-item {
  display: grid;
  gap: 10px;
}

.metric-card {
  padding: 18px;
}

.metric-value,
.value {
  font-size: 1.8rem;
  font-weight: 700;
}

.metric-label,
.label {
  color: var(--gray);
}

.empty-state {
  text-align: center;
  gap: 14px;
  color: var(--gray);
}

.empty-state i {
  font-size: 32px;
}

.log-item,
.timeline-item {
  border-left: 4px solid var(--primary);
}

.log-item {
  padding: 18px;
}

.log-header,
.device-card-header,
.timeline-content {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.device-card-header {
  margin-bottom: 12px;
}

.device-info-grid,
.info-card-grid {
  display: grid;
  gap: 12px;
}

.device-info-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.device-info-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--gray);
  line-height: 1.4;
}

.device-info-item i {
  margin-right: 0;
  color: var(--primary);
  width: 18px;
  min-width: 18px;
}

.device-info-item strong {
  color: var(--dark);
}

.log-time,
.timeline-time {
  color: var(--gray);
  font-size: 0.92rem;
}

.log-type {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.log-type.connection {
  background: #eef2ff;
  color: #3730a3;
}

.log-type.data_received {
  background: #ecfdf5;
  color: #166534;
}

.log-type.command_sent,
.log-type.command_response {
  background: #f0f9ff;
  color: #0369a1;
}

.timeline-item {
  grid-template-columns: 64px 1fr;
  align-items: flex-start;
}

.timeline-dot {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: white;
}

.timeline-content {
  gap: 8px;
}

.response,
.device-card,
.info-card,
.status-card,
.metric-card,
.log-item,
.empty-state {
  background: white;
}

.response {
  white-space: pre-wrap;
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  border-radius: 18px;
  border: 1px solid rgba(226, 232, 240, 0.8);
  padding: 18px;
}

.response.success {
  border-color: var(--success);
}

.response.error {
  border-color: var(--danger);
}

input,
select,
textarea {
  width: 100%;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--light);
}

label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray);
  margin-bottom: 4px;
}

textarea {
  resize: vertical;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%23647A88' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 18px;
}

@media (max-width: 1024px) {
  .main-content {
    margin: 24px auto 40px;
    padding: 0 18px;
  }

  .main-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .header-content,
  .main-content {
    padding: 20px;
  }

  .button-group,
  .device-info-grid,
  .status-grid,
  .metrics-grid,
  .main-grid {
    grid-template-columns: 1fr;
  }
}