/* Modern, prettier styles with gradients and better design */
html, body {
  height: 100vh;
  margin: 0;
  padding: 0;
  overflow: auto;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #333;
}

body {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 20px;
  height: 100%;
  box-sizing: border-box;
}

h1 {
  grid-row: 1;
  text-align: center;
  color: white;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
  font-size: 2.5em;
  margin: 0;
}

.info-panel {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  backdrop-filter: blur(10px);
  margin-bottom: 20px;
  border-left: 4px solid #667eea;
}

.info-panel h2 {
  margin-top: 0;
  color: #4a5568;
  font-size: 1.4em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-panel p {
  color: #2d3748;
  line-height: 1.6;
  margin-bottom: 15px;
}

.info-panel ul {
  margin: 15px 0;
  padding-left: 20px;
}

.info-panel li {
  margin-bottom: 8px;
  color: #4a5568;
  line-height: 1.5;
}

.info-panel li strong {
  color: #3182ce;
}

.main-content {
  grid-row: 2;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
  height: 100%;
}

.chat-column {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 15px;
  min-height: 0;
}

.settings-column {
  display: flex;
  flex-direction: column;
}

.settings-panel {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  backdrop-filter: blur(10px);
  flex: 1;
}

.settings-panel h3 {
  margin: 0 0 20px 0;
  color: #4a5568;
  font-size: 1.3em;
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 10px;
}

.chat-section {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  backdrop-filter: blur(10px);
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 0; /* Allow grid item to shrink */
}

.model-selector {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
  padding: 10px;
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  border-radius: 10px;
  border: 1px solid #e2e8f0;
}

.model-selector label {
  font-weight: 600;
  color: #4a5568;
}

.model-selector select {
  padding: 8px 12px;
  border: 1px solid #cbd5e0;
  border-radius: 6px;
  background: white;
  font-size: 14px;
}

.model-selector button {
  padding: 8px 16px;
  background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}

.model-selector button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(72, 187, 120, 0.4);
}

.model-selector button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.token-section {
  margin-bottom: 15px;
}

.toggle-button {
  background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
  color: white;
  border: none;
  border-radius: 6px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
  width: 100%;
}

.toggle-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(66, 153, 225, 0.4);
}

.token-input-container {
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  border-radius: 10px;
  padding: 15px;
  margin-top: 10px;
  border: 1px solid #e2e8f0;
}

.token-input-container input {
  width: 100%;
  padding: 10px;
  border: 1px solid #cbd5e0;
  border-radius: 6px;
  font-size: 14px;
  margin-bottom: 10px;
}

.token-input-container button {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  margin-right: 10px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.token-input-container button:first-of-type {
  background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
  color: white;
}

.token-input-container button:first-of-type:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(72, 187, 120, 0.4);
}

.token-input-container button:last-of-type {
  background: linear-gradient(135deg, #e53e3e 0%, #c53030 100%);
  color: white;
}

.token-input-container button:last-of-type:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(229, 62, 62, 0.4);
}

.token-buttons {
  display: flex;
  gap: 10px;
}

.token-buttons button {
  flex: 1;
}

.token-info {
  font-size: 12px;
  color: #718096;
  margin: 10px 0 0 0;
  line-height: 1.4;
}

.token-info a {
  color: #3182ce;
  text-decoration: none;
}

.token-info a:hover {
  text-decoration: underline;
}

.system-prompt-section {
  margin-bottom: 15px;
}

.system-prompt-container {
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  border-radius: 10px;
  padding: 15px;
  margin-top: 10px;
  border: 1px solid #e2e8f0;
}

.system-prompt-container textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid #cbd5e0;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  min-height: 80px;
  margin-bottom: 10px;
}

.system-prompt-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.system-prompt-buttons button {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}

.system-prompt-buttons button:first-child {
  background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
  color: white;
}

.system-prompt-buttons button:first-child:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(72, 187, 120, 0.4);
}

.system-prompt-buttons button:last-child {
  background: linear-gradient(135deg, #ed8936 0%, #dd6b20 100%);
  color: white;
}

.system-prompt-buttons button:last-child:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(237, 137, 54, 0.4);
}

.system-prompt-info {
  font-size: 12px;
  color: #718096;
  margin: 0;
  line-height: 1.4;
}

.status-bar {
  padding: 10px 15px;
  border-radius: 8px;
  margin-bottom: 10px;
  font-weight: 500;
  text-align: center;
  border: 1px solid;
  transition: all 0.3s ease;
}

.status-unloaded {
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  color: #4a5568;
  border-color: #cbd5e0;
}

.status-loading {
  background: linear-gradient(135deg, #ebf8ff 0%, #bee3f8 100%);
  color: #2b6cb0;
  border-color: #90cdf4;
  animation: pulse 2s infinite;
}

.status-loaded {
  background: linear-gradient(135deg, #f0fff4 0%, #c6f6d5 100%);
  color: #22543d;
  border-color: #9ae6b4;
}

.status-error {
  background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
  color: #742a2a;
  border-color: #feb2b2;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.tools-section {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 15px;
  padding: 20px;
  overflow-y: auto;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  backdrop-filter: blur(10px);
  max-height: 60vh; /* Limit tools section height */
}

.tools-section h3 {
  margin-top: 0;
  color: #4a5568;
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 10px;
  font-size: 1.2em;
}

.tool-item {
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  border: 1px solid #cbd5e0;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
  font-size: 14px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.tool-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.tool-item h4 {
  margin: 0 0 8px 0;
  color: #3182ce;
  font-size: 1em;
}

.tool-item p {
  margin: 0;
  color: #718096;
  font-size: 13px;
}

#chat-window {
  grid-row: 1;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  padding: 15px;
  overflow-y: auto;
  background: #f8fafc;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
  height: 60vh; /* Fixed height to prevent jumping */
  min-height: 400px; /* Minimum height for smaller screens */
}

.message {
  margin-bottom: 15px;
  padding: 12px 16px;
  border-radius: 18px;
  max-width: 80%;
  word-wrap: break-word;
  position: relative;
  animation: fadeIn 0.3s ease-in;
}

.message-content {
  margin-bottom: 5px;
  white-space: pre-wrap;
}

.timestamp {
  font-size: 10px;
  opacity: 0.7;
  text-align: right;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.user-message {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  margin-left: auto;
  text-align: left;
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.assistant-message {
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  color: #2d3748;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.input-area {
  grid-row: 2;
  display: grid;
  grid-template-columns: auto auto auto auto;
  grid-template-rows: auto auto;
  gap: 15px;
  align-items: center;
}

#message-input {
  grid-column: 1 / -1;
  grid-row: 1;
  padding: 15px 20px;
  border: 2px solid #e2e8f0;
  border-radius: 25px;
  font-size: 16px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

#message-input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#image-input {
  grid-row: 2;
  grid-column: 1;
  padding: 10px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  background: white;
  cursor: pointer;
}

#send-button {
  grid-row: 2;
  grid-column: 3;
  padding: 10px 16px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}

#send-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

#send-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

#clear-button {
  grid-row: 2;
  grid-column: 4;
  padding: 10px 16px;
  background: linear-gradient(135deg, #e53e3e 0%, #c53030 100%);
  color: white;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}

#clear-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(229, 62, 62, 0.4);
}

/* Streaming toggle styles */
.input-area label {
  grid-row: 2;
  grid-column: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #333;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
}

#stream-toggle {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.streaming {
  border-left: 4px solid #667eea;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { border-left-color: #667eea; }
  50% { border-left-color: #764ba2; }
  100% { border-left-color: #667eea; }
}

.spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #667eea;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  animation: spin 1s linear infinite;
  margin: 10px auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive design */
@media (max-width: 1024px) {
  .main-content {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .settings-column {
    order: -1; /* Move settings to top on mobile */
  }

  .settings-panel {
    max-height: 40vh;
    overflow-y: auto;
  }

  .chat-column {
    min-height: 50vh;
  }

  #chat-window {
    height: 50vh; /* Adjust height for tablet */
    min-height: 350px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 15px;
  }

  h1 {
    font-size: 2em;
  }

  .info-panel {
    padding: 15px;
  }

  .settings-panel {
    padding: 15px;
  }

  .model-selector {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .model-selector select,
  .model-selector button {
    width: 100%;
  }

  .system-prompt-buttons,
  .token-buttons {
    flex-direction: column;
  }

  .system-prompt-buttons button,
  .token-buttons button {
    width: 100%;
  }

  #chat-window {
    height: 40vh; /* Smaller height for mobile */
    min-height: 300px;
  }
}