/* ===== Variáveis ===== */
:root {
  --bg-page: #f5f7fb;
  --bg-card: #ffffff;
  --text-primary: #2e3440;
  --text-secondary: #7a8190;
  --accent: #6fa8dc;
  --danger: #e57373;
  --border: #e6e8ef;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

/* ===== Layout geral ===== */
body {
  background-color: var(--bg-page);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.app {
  width: 100%;
  max-width: 520px;
  background-color: var(--bg-card);
  border-radius: 24px;
  padding: 32px 28px 40px;
  box-shadow: var(--shadow);
}

/* ===== Header ===== */
.app-header {
  text-align: center;
  margin-bottom: 28px;
}

.app-title {
  font-size: 2rem;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.app-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* ===== Criar tarefa ===== */
.task-create form {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
}

#task-input {
  flex: 1;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  font-size: 0.95rem;
}

#task-input:focus {
  outline: none;
  border-color: var(--accent);
}

.btn-add {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background-color: var(--accent);
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
}

/* ===== Lista ===== */
.task-list ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ===== Card da tarefa ===== */
.task-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Linha principal */
.task-main {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.task-main input[type="checkbox"] {
  width: 18px;
  height: 18px;
}

.task-text {
  font-size: 1rem;
  color: var(--text-primary);
}

/* Data */
.task-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-left: 30px;
}

/* Ações */
.task-actions {
  display: flex;
  gap: 14px;
  margin-left: auto;
}

.task-actions button {
  background: none;
  border: none;
  font-size: 0.85rem;
  cursor: pointer;
}

.btn-edit {
  color: var(--accent);
}

.btn-delete {
  color: var(--danger);
}

/* ===== Estado concluído ===== */
.task-item.completed .task-text {
  text-decoration: line-through;
  color: var(--text-secondary);
}

.task-item.completed {
  opacity: 0.75;
}

/* ===== Estado vazio ===== */
.empty-state {
  text-align: center;
  margin-top: 24px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}