:root {
  --bg: #ffffff;
  --card: #f9f9f9;
  --muted: #555555;
  --text: #000000;
  --primary: #2563eb;
  --success: #16a34a;
  --danger: #dc2626;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  max-width: 700px;
  margin: 40px auto;
  padding: 0 16px;
}

h1 {
  text-align: center;
}

.card {
  background: var(--card);
  padding: 16px;
  border-radius: 10px;
  margin: 16px 0;
  border: 1px solid #ddd;
}

.field {
  display: grid;
  gap: 8px;
}

input[type="date"] {
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
  background: #fff;
  color: var(--text);
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.btn {
  padding: 10px 14px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  color: #fff;
}

.btn.primary { background: var(--primary); }
.btn.success { background: var(--success); }
.btn.danger { background: var(--danger); }
.btn.ghost { background: transparent; border: 1px solid #aaa; color: var(--text); }

.result-text {
  background: #fff;
  padding: 12px;
  border-radius: 8px;
  white-space: pre-wrap;
  border: 1px solid #ccc;
}

.saved-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.saved-list li {
  background: #fff;
  padding: 10px;
  border-radius: 8px;
  margin-top: 8px;
  border: 1px solid #ccc;
}
.hidden { display: none; }