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

html, body {
  height: 100%;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  color: #f0f0f0;
  min-height: 100vh;
  padding-bottom: 80px;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 60px 20px;
}

.hero h1 {
  font-size: 3rem;
  color: #00d4ff;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2rem;
  line-height: 1.6;
}

.card {
  background: linear-gradient(145deg, rgba(20,20,20,0.95), rgba(35,35,35,0.95));
  border-radius: 20px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.6);
  padding: 40px;
  max-width: 900px;
  margin: 40px auto;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 50px rgba(0,0,0,0.7);
}

.btn {
  display: inline-block;
  padding: 14px 30px;
  background-color: #00d4ff;
  color: #0f2027;
  font-weight: bold;
  border-radius: 10px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 20px;
}

.btn:hover {
  background-color: #00a2cc;
  transform: translateY(-3px);
}

select {
  padding: 10px;
  font-size: 1rem;
  border-radius: 8px;
  border: none;
  margin-top: 10px;
  width: 60%;
  max-width: 300px;
}

.table-container {
  overflow-x: auto;
  margin-top: 20px;
}

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

table, th, td {
  border: 1px solid rgba(255,255,255,0.2);
}

table th, table td {
  padding: 12px 15px;
  text-align: left;
}

table thead {
  background-color: rgba(0,212,255,0.2);
}

table tbody tr:nth-child(even) {
  background-color: rgba(255,255,255,0.05);
}

.fade-in {
  opacity: 0;
  transform: translateY(50px);
  transition: all 1s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}