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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: #1e293b;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #334155;
}

.brand {
  font-size: 1.4rem;
  font-weight: 700;
  color: #38bdf8;
}

nav a {
  color: #cbd5e1;
  text-decoration: none;
  margin-left: 1.5rem;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  transition: background 0.2s;
}

nav a:hover {
  background: #334155;
}

nav a.active {
  background: #38bdf8;
  color: #0f172a;
}

main {
  flex: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1rem;
  width: 100%;
}

.hero {
  text-align: center;
  padding: 2rem 1rem;
}

.hero h1 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
  color: #38bdf8;
}

.hero p {
  color: #94a3b8;
  font-size: 1.1rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
  margin-top: 2rem;
}

.card {
  background: #1e293b;
  padding: 1.2rem;
  border-radius: 10px;
  border: 1px solid #334155;
}

.card h2 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: #38bdf8;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 1.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #1e293b;
  border-radius: 10px;
  overflow: hidden;
}

th, td {
  padding: 0.8rem 1rem;
  text-align: left;
  border-bottom: 1px solid #334155;
}

th {
  background: #0f172a;
  color: #38bdf8;
}

tr:hover {
  background: #273449;
}

.about h2 {
  color: #38bdf8;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.about p {
  margin-bottom: 1rem;
  color: #cbd5e1;
}

footer {
  text-align: center;
  padding: 1rem;
  color: #64748b;
  border-top: 1px solid #334155;
}