:root {
  --primary-color: #4285F4;
  --primary-hover: #2c5fc9;
  --secondary-color: #34A853;
  --secondary-hover: #2d8a47;
  --background-color: #f8f9fa;
  --card-bg: #ffffff;
  --text-color: #202124;
  --text-secondary: #5f6368;
  --border-color: #dadce0;
  --user-message-bg: #e8f0fe;
  --assistant-message-bg: #e6f4ea;
  --system-message-bg: #f8f9fa;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
}

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

body {
  font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: var(--spacing-md);
}

h1 {
  text-align: center;
  margin: var(--spacing-md) 0;
  font-weight: 600;
  color: var(--primary-color);
  font-size: 1.75rem;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  background-color: var(--card-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.collapsible {
  background-color: var(--primary-color);
  color: white;
  cursor: pointer;
  padding: var(--spacing-md) var(--spacing-lg);
  width: 100%;
  border: none;
  text-align: left;
  outline: none;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background-color 0.2s ease;
}

.collapsible::after {
  content: "\25BC";
  font-size: 0.8rem;
  margin-left: var(--spacing-md);
}

.collapsible.active::after {
  content: "\25B2";
}

.active,
.collapsible:hover {
  background-color: var(--primary-hover);
}

.content {
  padding: 0 var(--spacing-lg);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  background-color: var(--card-bg);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.config-item {
  margin: var(--spacing-lg) 0;
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

select,
input,
textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-color);
  background-color: white;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

select:focus,
input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.2);
}

textarea {
  min-height: 80px;
  resize: vertical;
}

.chat-container {
  flex: 1;
  max-height: 70vh;
  margin: var(--spacing-md) 0;
  padding: var(--spacing-md);
  overflow-y: auto;
  background-color: var(--background-color);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  box-shadow: var(--shadow-sm) inset;
}

.action-buttons {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--card-bg);
  position: sticky;
  bottom: 0;
  border-top: 1px solid var(--border-color);
}

button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: background-color 0.2s ease, transform 0.1s ease;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

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

button:active {
  transform: translateY(1px);
}

button:disabled {
  background-color: var(--border-color);
  cursor: not-allowed;
  transform: none;
}

#loadContextBtn {
  background-color: var(--text-secondary);
  margin-top: var(--spacing-sm);
}

#loadContextBtn:hover {
  background-color: var(--text-color);
}

#muteBtn {
  background-color: var(--secondary-color);
}

#muteBtn:hover {
  background-color: var(--secondary-hover);
}

chat-message {
  display: block;
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  max-width: 85%;
  box-shadow: var(--shadow-sm);
  position: relative;
  animation: fadeIn 0.3s ease;
  margin: var(--spacing-xs) 0;
  line-height: 1.5;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(5px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

chat-message[role="user"] {
  background-color: var(--user-message-bg);
  align-self: flex-end;
  border-bottom-right-radius: 0;
}

chat-message[role="assistant"] {
  background-color: var(--assistant-message-bg);
  align-self: flex-start;
  border-bottom-left-radius: 0;
}

chat-message[role="system"] {
  background-color: var(--system-message-bg);
  border: 1px solid var(--border-color);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--text-secondary);
  align-self: flex-start;
  max-width: 90%;
}

chat-message[timestamp]::before {
  content: attr(timestamp);
  position: absolute;
  top: -1.2rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.8;
}

chat-message[role="user"][timestamp]::before {
  right: 0.5rem;
}

chat-message[role="assistant"][timestamp]::before {
  left: 0.5rem;
}

speech-indicator {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: #ff9800;
  color: white;
  border-radius: var(--radius-sm);
  margin: var(--spacing-sm) auto;
  font-size: 0.9rem;
  font-weight: 500;
  animation: pulse 1.5s infinite;
  gap: var(--spacing-sm);
}

speech-indicator::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  background-color: white;
  border-radius: 50%;
  animation: bounce 1.5s infinite;
}

@keyframes pulse {
  0% {
    opacity: 0.8;
  }

  50% {
    opacity: 1;
  }

  100% {
    opacity: 0.8;
  }
}

@keyframes bounce {

  0%,
  100% {
    transform: scale(0.8);
  }

  50% {
    transform: scale(1.2);
  }
}

.loading-indicator {
  display: inline-block;
  position: relative;
  width: 20px;
  height: 20px;
}

.loading-indicator div {
  position: absolute;
  width: 6px;
  height: 6px;
  background: white;
  border-radius: 50%;
  animation: loading-indicator 1.2s linear infinite;
}

.loading-indicator div:nth-child(1) {
  animation-delay: 0s;
  top: 7px;
  left: 0;
}

.loading-indicator div:nth-child(2) {
  animation-delay: -0.4s;
  top: 0;
  left: 7px;
}

.loading-indicator div:nth-child(3) {
  animation-delay: -0.8s;
  top: 7px;
  right: 0;
}

@keyframes loading-indicator {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* Media Queries */
@media (max-width: 768px) {
  body {
    padding: var(--spacing-xs);
  }

  h1 {
    font-size: 1.5rem;
    margin: var(--spacing-sm) 0;
  }

  .container {
    border-radius: var(--radius-sm);
  }

  .chat-container {
    margin: var(--spacing-sm) 0;
    padding: var(--spacing-sm);
    max-height: 65vh;
  }

  .action-buttons {
    flex-direction: column;
    padding: var(--spacing-sm);
  }

  button {
    padding: var(--spacing-md);
  }

  chat-message {
    max-width: 90%;
    padding: var(--spacing-sm);
    font-size: 0.95rem;
  }
}

@media (max-width: 480px) {
  chat-message {
    max-width: 95%;
  }

  .collapsible {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .content {
    padding: 0 var(--spacing-sm);
  }
}