:root {
  /* global reset colors */
  --bg: #f0f4f8;
  --fg: #2d3748;
  --card-bg: #ffffff;
  --primary: #805ad5;
  --primary-hover: #6b46c1;
  --danger: #e53e3e;
  --success: #38a169;
}

body {
  background-color: var(--bg);
  color: var(--fg);
  margin: 6px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 30px;
}

/* utility */
.container {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 3 colunas iguais */
  gap: 20px; /* Espaçamento entre os itens */
  width: 100%;
}

/* Titles and headings */
span, title {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 20px;
  color: var(--fg);
  display: block;
  text-align: center;
}

input {
  border: 1px solid #d1d5db;
  border-radius: 12px;
  padding: 10px;
  margin-bottom: 20px;
  font-size: 16px;
  width: 100%;
  max-width: 400px;
  transition: border-color 0.3s;
}

input:focus,
input:hover {
  border-color: var(--primary);
  outline: none;
}

button#btnAdicionar {
  width: 100%;
  max-width: 400px;
  height: 44px;
  background-color: var(--primary);
  color: #fff;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-size: 16px;
  transition: background-color 0.2s;
}

button#btnAdicionar:hover {
  background-color: var(--primary-hover);
}

/* list styling */
ul {
  list-style: none;          /* Remove os marcadores */
  padding: 0;
  margin: 0;
  width: 100%;
  max-width: 500px;
}

li {
  margin-bottom: 10px;       /* Espaçamento entre itens */
}

/* card style for each item */
.item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--card-bg);
  padding: 10px;
  border-radius: 8px;
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  transition: background-color 0.3s, transform 0.2s;
}

.item:hover {
  transform: translateY(-2px);
}

/* alterna cores das linhas para melhor legibilidade */
li:nth-child(even) .item {
  background-color: #f9fafb;
}

.check-button,
.delete-button {
  background: none;
  border: none;
  font-size: 18px;
  width: 32px;
  height: 32px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50%;
  transition: background 0.3s;
  cursor: pointer;
}

.check-button {
  color: var(--fg);
}
.check-button.selected {
  color: var(--success);
}
.check-button:hover {
  background-color: #edf2f7;
}

.delete-button {
  color: var(--danger);
}
.delete-button:hover {
  background-color: #fed7d7;
}

.item.selecionado {
  background-color: #e6fffa;
}
.item.selecionado span {
  text-decoration: line-through;
  color: #718096;
}

#contadorItens {
  margin-top: 10px;
  font-weight: 500;
  color: var(--fg);
}