body {
  font-family: 'Poppins', sans-serif;
  background: #f4fdf7;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.card {
  background: #fff;
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  text-align: center;
  width: 90%;
  max-width: 600px;
}

h2 {
  color: #2ecc71;
  margin-bottom: 20px;
}

input[type="text"],
input[type="password"],
input[type="date"],
input[type="time"],
select {
  width: 100%;
  padding: 12px;
  margin: 8px 0;
  border: 1px solid #ddd;
  border-radius: 10px;
  font-size: 14px;
}

input:focus, select:focus {
  border-color: #2ecc71;
  outline: none;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 12px 0;
  font-size: 14px;
}

.btn {
  background: #2ecc71;
  color: white;
  padding: 12px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-size: 15px;
  width: 100%;
  transition: background 0.3s ease;
}

.btn:hover {
  background: #27ae60;
}

.btn.small {
  padding: 6px 10px;
  font-size: 12px;
  margin: 2px;
}

.btn.danger {
  background: #e74c3c;
}

.btn.danger:hover {
  background: #c0392b;
}

/* Tablo tasarımı */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

table th, table td {
  padding: 10px;
  border-bottom: 1px solid #ddd;
  text-align: center;
}

table th {
  background: #2ecc71;
  color: white;
}