:root {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --accent-color: #bb86fc;
    --sidebar-width: 250px;
}

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

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.logo {
    font-size: 1.8em;
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: 30px;
    text-align: center;
}

.nav-menu {
    list-style: none;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    cursor: pointer;
    border-radius: 5px;
    margin-bottom: 10px;
    transition: background-color 0.3s ease;
}

.nav-item:hover {
    background-color: rgba(255,255,255,0.1);
}

.nav-item.active {
    background-color: rgba(187, 134, 252, 0.2);
    color: var(--accent-color);
}

.nav-item .icon {
    margin-right: 10px;
    font-size: 1.2em;
}

.main-content {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    background-color: var(--bg-primary);
}

.section {
    background-color: var(--bg-secondary);
    border-radius: 10px;
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.input-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

textarea, input, select, button {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid #333;
    padding: 10px;
    border-radius: 5px;
}

button {
    background-color: var(--accent-color);
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #9662d3;
}

.result-container {
    background-color: var(--bg-primary);
    border: 1px solid #333;
    border-radius: 5px;
    padding: 20px;
    min-height: 300px;
    max-height: 400px;
    overflow-y: auto;
}

.hidden {
    display: none;
}

.error-message {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #ff4444;
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1000;
}

.error-message.show {
  opacity: 1;
}

.image-result-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.image-controls {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

.regenerate-btn, .retry-btn {
  background-color: #4CAF50;
  color: white;
  border: none;
  padding: 8px 15px;
  border-radius: 5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: background-color 0.3s ease;
}

.regenerate-btn:hover, .retry-btn:hover {
  background-color: #45a049;
}

.error-container {
  text-align: center;
  color: #ff4444;
  padding: 20px;
}

.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  gap: 15px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--accent-color);
  border-top: 4px solid transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.generated-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.download-btn {
  background-color: var(--accent-color);
  color: var(--text-primary);
  border: none;
  padding: 10px 15px;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  margin-top: 10px;
}

.download-btn:hover {
  background-color: #9662d3;
}

.chat-messages {
  height: 400px;
  overflow-y: auto;
  background-color: var(--bg-primary);
  border: 1px solid #333;
  border-radius: 5px;
  padding: 15px;
  margin-bottom: 15px;
  display: flex;
  flex-direction: column;
}

.chat-message {
  margin-bottom: 10px;
  padding: 10px;
  border-radius: 5px;
  max-width: 80%;
}

.user-message {
  align-self: flex-end;
  background-color: var(--accent-color);
  color: var(--bg-primary);
}

.ai-message {
  align-self: flex-start;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.chat-input {
  display: flex;
  gap: 10px;
}

.chat-input input {
  flex-grow: 1;
}

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