* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: #f2f7ff;
  color: #102a43;
}

header {
  background-color: #061e47;
  color: white;
  padding: 18px 30px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}
header a {
  text-decoration: none;
  color: white;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav h1 {
  margin: 0;
  letter-spacing: 1px;
}

nav ul {
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}

nav ul li {
  list-style: none;
  font-weight: bold;
}

nav ul li a {
  color: white;
  text-decoration: none;
}

nav ul li a:hover {
  color: #68a4f1;
}

/* MAIN */

main {
  flex: 1;
  padding: 40px 30px;
}

/* HOME PAGE */

.hero {
  text-align: center;
  padding: 60px 20px;
}

.hero h2 {
  font-size: 36px;
  color: #061e47;
}

.hero p {
  font-size: 18px;
  color: #486581;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  background-color: #0b5ed7;
  color: white;
  padding: 12px 20px;
  border-radius: 6px;
  text-decoration: none;
}

.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  max-width: 900px;
  margin: 30px auto;
}

.card {
  background-color: white;
  padding: 25px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(6, 30, 71, 0.12);

  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
  background-color: lightgray;
  box-shadow: 0 12px 20px rgba(6, 30, 71, 0.2);
}

.card h3 {
  color: #0b5ed7;
}

/* FORM PAGE */

.form-section {
  width: 90%;
  max-width: 500px;
  margin: 40px auto;
  padding: 30px;
  background-color: white;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(6, 30, 71, 0.12);
}

.form-section h2 {
  text-align: center;
  color: #061e47;
}

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

form input,
form select {
  padding: 12px;
  border: 1px solid #b6d4fe;
  border-radius: 6px;
  font-size: 16px;
}

form input:focus,
form select:focus {
  outline: none;
  border-color: #0b5ed7;
}

form button {
  padding: 12px;
  border: none;
  background-color: #0b5ed7;
  color: white;
  font-size: 16px;
  cursor: pointer;
  border-radius: 6px;
}

form button:hover {
  background-color: #084298;
}

/* TRANSACTIONS PAGE */

.transaction-section {
  max-width: 1000px;
  margin: 30px auto;
  background-color: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(6, 30, 71, 0.12);
}

.transaction-section h2 {
  color: #061e47;
  text-align: center;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

th {
  background-color: #0b5ed7;
  color: white;
  padding: 12px;
}

td {
  padding: 12px;
  border-bottom: 1px solid #dbeafe;
  text-align: center;
}

td button {
  background-color: #dc3545;
  color: white;
  border: none;
  padding: 8px 12px;
  border-radius: 5px;
  cursor: pointer;
}

td button:hover {
  background-color: #b02a37;
}

/* FOOTER */

footer {
  padding: 14px;
  background-color: #061e47;
  color: white;
  text-align: center;
}

/* RESPONSIVE */

@media (max-width: 768px) {
  nav {
    flex-direction: column;
    gap: 15px;
  }

  nav ul {
    flex-direction: column;
    align-items: center;
  }

  .summary {
    grid-template-columns: 1fr;
  }

  table {
    font-size: 14px;
  }

  main {
    padding: 20px;
  }
}