* {
  box-sizing: border-box;
}

body {
  font-family: 'Fredoka', 'Poppins', sans-serif;
  background-color: #e6f7ff;
  background-image:
    radial-gradient(circle at 18px 18px, #5bbcff 6px, transparent 7px),
    radial-gradient(circle at 54px 36px, #5bbcff 5px, transparent 6px),
    radial-gradient(circle at 90px 12px, #5bbcff 6px, transparent 7px),
    radial-gradient(circle at 30px 78px, #5bbcff 5px, transparent 6px);
  background-size: 120px 120px;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

/* CONTAINER */
.container {
  background: #ffffff;
  width: 90%;
  max-width: 420px;
  padding: 25px;
  border-radius: 22px;
  text-align: center;
  box-shadow: 0 0 20px rgba(80, 170, 255, 0.35);
}

/* TEXTO */
h2 {
  margin-top: 0;
  color: #3b82f6;
  font-weight: 600;
}

.explicacao {
  background: #eaf4ff;
  padding: 14px;
  border-radius: 14px;
  margin-bottom: 18px;
  color: #2563eb;
  font-size: 14px;
}

/* BOTÕES DE MODO */
.mode-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
}

.mode-buttons button {
  flex: 1;
  padding: 14px;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  background: #cfe4ff;
  transition: 0.2s;
  font-size: 15px;
  font-weight: 600;
}

.mode-buttons button.active {
  background: #3b82f6;
  color: white;
}

/* CAMPOS */
.field {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

input {
  flex: 1;
  padding: 14px;
  border-radius: 14px;
  border: 2px solid #cfe4ff;
  background: #f3f9ff;
  font-size: 15px;
  outline: none;
}

input:focus {
  border-color: #3b82f6;
}

/* BOTÃO REMOVER */
.remove {
  background: #ef4444;
  color: white;
  padding: 0 14px;
  border-radius: 14px;
  border: none;
  cursor: pointer;
  font-weight: bold;
}

/* BOTÃO ADD */
.add {
  background: #6366f1;
  color: white;
  width: 100%;
  margin-top: 10px;
  border: none;
  padding: 14px;
  border-radius: 14px;
  cursor: pointer;
  font-size: 15px;
  display: none;
}

/* BOTÃO ENVIAR */
.send {
  background: #22c55e;
  color: white;
  width: 100%;
  margin-top: 14px;
  border: none;
  padding: 14px;
  border-radius: 14px;
  cursor: pointer;
  font-size: 15px;
}

/* MSG */
.msg {
  margin-top: 15px;
  padding: 14px;
  border-radius: 14px;
  display: none;
  font-size: 14px;
}

.ok {
  background: #dcfce7;
  color: #166534;
}

.erro {
  background: #fee2e2;
  color: #991b1b;
}

/* POPUP */
.popup {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  padding: 25px;
  border-radius: 20px;
  box-shadow: 0 0 25px rgba(0,0,0,0.25);
  text-align: center;
  width: 80%;
  max-width: 300px;
  font-size: 16px;
  color: #4b4b4b;
  z-index: 999;
}

.popup-btn {
  margin-top: 15px;
  padding: 12px 22px;
  background: #3b82f6;
  border: none;
  border-radius: 14px;
  color: white;
  cursor: pointer;
}