* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  background: #f4f7f5;
  color: #17231d;
  min-height: 100vh;
}


.header {
  background: #075e3c;
  color: white;
  padding: 18px;
  text-align: center;
}

.logo {
  font-size: 26px;
  font-weight: bold;
}

.subtitle {
  margin-top: 5px;
  opacity: 0.9;
}


.container {
  max-width: 900px;
  margin: auto;
  padding: 20px;
}


.hero {
  text-align: center;
  padding: 25px 10px;
}

.hero h1 {
  color: #075e3c;
  margin-bottom: 10px;
}

.hero p {
  line-height: 1.8;
}


.language-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.language-buttons button {
  border: none;
  background: white;
  padding: 10px 14px;
  border-radius: 20px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}


.chat-box {
  background: white;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 5px 25px rgba(0,0,0,0.08);
}


.messages {
  min-height: 430px;
  max-height: 600px;
  overflow-y: auto;
  padding: 20px;
}


.message {
  display: flex;
  margin-bottom: 18px;
  gap: 10px;
}


.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #075e3c;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}


.bubble {
  max-width: 85%;
  background: #eef6f1;
  padding: 13px 16px;
  border-radius: 15px;
  line-height: 1.8;
}


.user {
  justify-content: flex-end;
}

.user .avatar {
  display: none;
}

.user .bubble {
  background: #075e3c;
  color: white;
}


.bubble strong {
  display: block;
  margin-bottom: 5px;
}


.bubble p {
  margin-top: 7px;
}


.input-area {
  display: flex;
  padding: 12px;
  border-top: 1px solid #ddd;
  gap: 10px;
}


#userInput {
  flex: 1;
  resize: none;
  border: 1px solid #ccc;
  border-radius: 12px;
  padding: 12px;
  font-size: 16px;
  outline: none;
}


#userInput:focus {
  border-color: #075e3c;
}


#sendButton {
  width: 55px;
  border: none;
  border-radius: 12px;
  background: #075e3c;
  color: white;
  font-size: 25px;
  cursor: pointer;
}


#sendButton:disabled {
  opacity: 0.5;
}


.typing {
  display: none;
  padding: 10px 20px;
  color: #666;
  font-size: 14px;
}


.quick {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}


.quick button {
  border: none;
  background: white;
  padding: 12px 16px;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}


footer {
  text-align: center;
  padding: 30px 15px;
  color: #666;
}


@media (max-width: 600px) {

  .container {
    padding: 10px;
  }

  .hero h1 {
    font-size: 25px;
  }

  .messages {
    min-height: 400px;
  }

  .bubble {
    max-width: 90%;
  }

}