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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}

h1 {
  text-align: center;
  color: #333;
  margin-bottom: 30px;
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(45deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 15px;
}

.search-filters {
  display: flex;
  gap: 15px;
  flex: 1;
  min-width: 300px;
}

.search-box,
.campaign-filter {
  flex: 1;
  position: relative;
}

.search-box input,
.campaign-filter select {
  width: 100%;
  padding: 12px 40px 12px 16px;
  border: 2px solid #e1e5e9;
  border-radius: 12px;
  font-size: 16px;
  transition: all 0.3s ease;
  background: white;
}

.search-box input:focus,
.campaign-filter select:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.search-icon {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: #666;
}

.refresh-btn {
  background: linear-gradient(45deg, #667eea, #764ba2);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.refresh-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  padding: 20px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-number {
  font-size: 2rem;
  font-weight: bold;
  color: #667eea;
  margin-bottom: 5px;
}

.stat-label {
  color: #666;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.table-container {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

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

th {
  background: linear-gradient(45deg, #667eea, #764ba2);
  color: white;
  padding: 15px;
  text-align: left;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

td {
  padding: 15px;
  border-bottom: 1px solid #f1f1f1;
  color: #333;
}

tr:hover {
  background: rgba(102, 126, 234, 0.05);
}

tr:last-child td {
  border-bottom: none;
}

.email-cell {
  font-weight: 500;
  color: #667eea;
}

.date-cell {
  color: #666;
  font-family: "Courier New", monospace;
}

.loading {
  text-align: center;
  padding: 40px;
  color: #666;
  font-size: 1.1rem;
}

.error {
  background: #fee;
  color: #c33;
  padding: 15px;
  border-radius: 10px;
  margin-bottom: 20px;
  border-left: 4px solid #c33;
}

.no-data {
  text-align: center;
  padding: 40px;
  color: #999;
  font-style: italic;
}

@media (max-width: 768px) {
  .container {
    padding: 20px;
  }

  h1 {
    font-size: 2rem;
  }

  .controls {
    flex-direction: column;
    align-items: stretch;
  }

  .search-filters {
    flex-direction: column;
    min-width: auto;
  }

  table {
    font-size: 14px;
  }

  th,
  td {
    padding: 10px;
  }
}