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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  background: linear-gradient(135deg, #0f172a 0%, #1e40af 50%, #0f172a 100%);
  color: white;
  min-height: 100vh;
}

.app {
  min-height: 100vh;
  padding: 24px;
  position: relative;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

/* Loading Screen */
.loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  font-size: 20px;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: #3b82f6;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Notifications */
.notifications {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  max-width: 400px;
}

.notification {
  background: rgba(30, 41, 59, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  animation: slideIn 0.3s ease-out;
  backdrop-filter: blur(10px);
}

.notification-gain {
  border-left: 4px solid #10b981;
}

.notification-loss {
  border-left: 4px solid #ef4444;
}

.notification-info {
  border-left: 4px solid #3b82f6;
}

.notification button {
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.notification button:hover {
  opacity: 1;
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Cards */
.header-card, .card, .settings-panel {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
}

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

.header-card h1 {
  font-size: 36px;
  margin-bottom: 8px;
}

.header-card p {
  opacity: 0.8;
  font-size: 14px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.card h2 {
  font-size: 24px;
  font-weight: 600;
}

/* Settings Panel */
.settings-panel h2 {
  font-size: 24px;
  margin-bottom: 20px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.setting-item label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 14px;
}

.setting-item small {
  display: block;
  margin-top: 4px;
  opacity: 0.7;
  font-size: 12px;
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  padding: 24px;
  border-radius: 12px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.metric-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

.metric-card.blue {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.metric-card.purple {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.metric-card.green {
  background: linear-gradient(135deg, #10b981, #059669);
}

.metric-card.red {
  background: linear-gradient(135deg, #ef4444, #dc2626);
}

.metric-card.orange {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

.metric-label {
  font-size: 14px;
  opacity: 0.9;
  margin-bottom: 8px;
}

.metric-value {
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 4px;
}

.metric-footer {
  font-size: 12px;
  opacity: 0.8;
}

/* Forms */
.add-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  margin-bottom: 20px;
}

.input {
  background: #1e293b;
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.2s;
}

.input:focus {
  outline: none;
  border-color: #3b82f6;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: #3b82f6;
  color: white;
}

.btn-primary:hover {
  background: #2563eb;
}

.btn-success {
  background: #10b981;
  color: white;
}

.btn-success:hover {
  background: #059669;
}

.btn-delete {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.btn-delete:hover {
  opacity: 1;
}

.symbol-btn {
  background: none;
  border: none;
  color: #60a5fa;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  transition: color 0.2s;
}

.symbol-btn:hover {
  color: #93c5fd;
}

/* Table */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 12px 16px;
  text-align: left;
}

th {
  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
  font-weight: 600;
  font-size: 14px;
  text-transform: uppercase;
  opacity: 0.8;
}

td {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

tr:hover td {
  background: rgba(255, 255, 255, 0.05);
}

.text-right {
  text-align: right;
}

.text-green {
  color: #34d399;
}

.text-red {
  color: #f87171;
}

/* Charts */
.charts-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.chart-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  padding: 24px;
}

.chart-card.large {
  grid-column: span 1;
}

.chart-stats {
  display: flex;
  gap: 20px;
  margin-bottom: 16px;
  font-size: 14px;
}

.chart-stats span {
  opacity: 0.8;
}

/* Footer */
.footer {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  font-size: 14px;
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
  
  .chart-card.large {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  .app {
    padding: 12px;
  }
  
  .header-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  
  .settings-grid {
    grid-template-columns: 1fr;
  }
  
  .add-form {
    grid-template-columns: 1fr;
  }
  
  .notifications {
    left: 12px;
    right: 12px;
    max-width: none;
  }
}

/* Recharts Customization */
.recharts-tooltip-wrapper {
  outline: none;
}

.recharts-default-tooltip {
  background: rgba(30, 41, 59, 0.95) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  border-radius: 8px !important;
}