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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("assets/background.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  z-index: -2;
}

.chat-container {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  max-width: 900px;
  width: 100%;
  height: 85vh;
  max-height: 700px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.chat-header {
  background: linear-gradient(135deg, #2e7d32 0%, #388e3c 50%, #43a047 100%);
  color: white;
  padding: 20px 25px;
  display: flex;
  align-items: center;
  gap: 15px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.header-logo {
  width: 50px;
  height: 50px;
  background: white;
  border-radius: 50%;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.header-text {
  flex: 1;
}

.header-text h1 {
  font-size: 1.5em;
  margin-bottom: 3px;
  font-weight: 600;
}

.header-text p {
  font-size: 0.85em;
  opacity: 0.95;
  font-weight: 300;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 25px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.3),
    rgba(255, 255, 255, 0.1)
  );
}

.chat-messages::-webkit-scrollbar {
  width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
  background: rgba(165, 214, 167, 0.2);
  border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: #66bb6a;
  border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: #388e3c;
}

.message {
  max-width: 75%;
  padding: 14px 20px;
  border-radius: 18px;
  word-wrap: break-word;
  animation: fadeIn 0.4s ease-in;
  line-height: 1.6;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.user-message {
  align-self: flex-end;
  background: linear-gradient(135deg, #2e7d32 0%, #388e3c 100%);
  color: white;
  border-bottom-right-radius: 4px;
}

.bot-message {
  align-self: flex-start;
  background: white;
  color: #2c3e50;
  border: 1px solid rgba(165, 214, 167, 0.3);
  border-bottom-left-radius: 4px;
}

.chat-input-container {
  padding: 20px 25px;
  background: rgba(245, 245, 245, 0.95);
  backdrop-filter: blur(10px);
  border-top: 2px solid rgba(165, 214, 167, 0.5);
  display: flex;
  gap: 12px;
}

.chat-input {
  flex: 1;
  padding: 14px 22px;
  border: 2px solid #a5d6a7;
  border-radius: 28px;
  font-size: 1em;
  outline: none;
  transition: all 0.3s;
  background: white;
  color: #2c3e50;
}

.chat-input:focus {
  border-color: #388e3c;
  box-shadow: 0 0 0 3px rgba(56, 142, 60, 0.1);
}

.send-button {
  background: linear-gradient(135deg, #2e7d32 0%, #388e3c 100%);
  color: white;
  border: none;
  padding: 14px 32px;
  border-radius: 28px;
  font-size: 1em;
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.send-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 142, 60, 0.4);
  background: linear-gradient(135deg, #388e3c 0%, #43a047 100%);
}

.send-button:active {
  transform: translateY(0);
}

.send-button:disabled {
  background: #bdbdbd;
  cursor: not-allowed;
  transform: none;
}

.loading {
  align-self: flex-start;
  padding: 14px 20px;
  background: white;
  border: 1px solid rgba(165, 214, 167, 0.3);
  border-radius: 18px;
  border-bottom-left-radius: 4px;
  color: #388e3c;
  font-style: italic;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.loading::after {
  content: "...";
  animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
  0%,
  20% {
    content: ".";
  }
  40% {
    content: "..";
  }
  60%,
  100% {
    content: "...";
  }
}

.info-badge {
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
  color: #2e7d32;
  padding: 10px 18px;
  border-radius: 16px;
  font-size: 0.85em;
  margin-top: 5px;
  display: inline-block;
  border: 1px solid rgba(165, 214, 167, 0.5);
  font-weight: 500;
}

/* Responsive mobile */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .chat-container {
    height: 95vh;
    max-height: none;
    border-radius: 16px;
  }

  .chat-header {
    padding: 15px 18px;
    flex-wrap: wrap;
  }

  .header-logo {
    width: 45px;
    height: 45px;
  }

  .header-text h1 {
    font-size: 1.2em;
  }

  .header-text p {
    font-size: 0.8em;
  }

  .chat-messages {
    padding: 15px;
    gap: 12px;
  }

  .message {
    max-width: 85%;
    padding: 12px 16px;
    font-size: 0.95em;
  }

  .chat-input-container {
    padding: 15px;
    gap: 10px;
  }

  .chat-input {
    padding: 12px 18px;
    font-size: 0.95em;
  }

  .send-button {
    padding: 12px 24px;
    font-size: 0.95em;
  }
}

@media (max-width: 480px) {
  .header-text h1 {
    font-size: 1.1em;
  }

  .send-button span {
    display: none;
  }

  .send-button {
    padding: 12px 20px;
  }
}