* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #eef4f8;
  color: #172b3a;
}

.app-header {
  background: #174d76;
  color: white;
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.app-header h1 { margin: 0; font-size: 26px; }
.app-header p { margin: 4px 0 0; opacity: .9; }

main {
  max-width: 1350px;
  margin: 18px auto;
  padding: 0 14px 30px;
}

.card {
  background: white;
  border-radius: 14px;
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: 0 2px 14px rgba(0,0,0,.08);
}

.center {
  text-align: center;
  max-width: 520px;
  margin: 40px auto;
}

.hidden { display: none; }

h2 { margin-top: 0; }
h3 { margin-bottom: 8px; }

.grid {
  display: grid;
  gap: 12px;
  margin-bottom: 14px;
}

.grid.four { grid-template-columns: repeat(4, minmax(130px, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(160px, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(180px, 1fr)); }

label {
  font-weight: 700;
  font-size: 14px;
}

label.check {
  border: 1px solid #c9d9e3;
  border-radius: 10px;
  padding: 10px;
  background: #f8fbfd;
}

input, select {
  width: 100%;
  margin-top: 5px;
  padding: 9px 10px;
  border: 1px solid #b5c7d4;
  border-radius: 8px;
  font-size: 15px;
  background: white;
}

label.check input {
  width: auto;
  margin-right: 8px;
}

.money-row { margin-top: 12px; }

.hint {
  color: #536b7a;
  margin-top: -4px;
}

.big-code {
  font-size: 22px;
}

.message {
  font-weight: 700;
  color: #174d76;
}

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 900px;
}

th {
  background: #5b9bd5;
  color: white;
  padding: 9px;
  font-size: 14px;
}

td {
  padding: 7px;
  border-bottom: 1px solid #d6e4ee;
  text-align: center;
}

tbody tr:nth-child(even) { background: #e8f5fb; }

td.left { text-align: left; }

.score-input, .dot-input {
  max-width: 70px;
  text-align: center;
}

.win { font-weight: 700; color: #0a6d2d; }
.lose { font-weight: 700; color: #b00020; }

button {
  border: none;
  background: #174d76;
  color: white;
  padding: 11px 16px;
  border-radius: 9px;
  font-weight: 700;
  cursor: pointer;
  margin: 4px;
}

button.secondary {
  background: #dce8f0;
  color: #17384f;
}

.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.breakdown {
  background: #f8fbfd;
  border: 1px solid #d6e4ee;
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 12px;
}

.breakdown h3 {
  margin-top: 0;
}

@media (max-width: 760px) {
  .app-header { align-items: flex-start; flex-direction: column; }
  .grid.four, .grid.three, .grid.two { grid-template-columns: 1fr; }
  .card { padding: 14px; }
  th, td { padding: 7px 5px; font-size: 13px; }
}