/* 全局样式与字体 */
html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  color: #2d3748;
  background: linear-gradient(135deg, #a6c0fe 0%, #f68084 100%);
  background-attachment: fixed;
  animation: gradientBG 15s ease infinite;
  background-size: 400% 400%;
  height: 100%;
}

@keyframes gradientBG {
  0% { background-position: 0% 50% }
  50% { background-position: 100% 50% }
  100% { background-position: 0% 50% }
}

/* 容器基本样式 */
body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

/* 登录与聊天容器公共玻璃拟态风格 */
#auth-container,
#chat-container {
  backdrop-filter: blur(20px) saturate(180%);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 
    0 8px 32px 0 rgba(31, 38, 135, 0.15),
    inset 0 0 0 1px rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  transition: all 0.3s ease;
}

/* 登录器布局 */
#auth-container {
  margin: 20px;
  width: calc(100% - 40px);
  max-width: 400px;
  box-sizing: border-box;
  padding: 2.5rem 2rem;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 28px;
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.1),
    0 1px 2px rgba(255, 255, 255, 0.3);
}

#auth-container h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

.input-group {
  position: relative;
  margin-bottom: 1rem;
  width: 100%;
  box-sizing: border-box;
}

.input-group input {
  width: 100%;
  box-sizing: border-box;
  padding: 1rem 1.2rem;
  margin: 0;
  border: none;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  color: #1a1a1a;
  box-shadow: 
    0 2px 6px rgba(0, 0, 0, 0.05),
    inset 0 1px 2px rgba(0, 0, 0, 0.06);
}

#login-button {
  width: 100%;
  padding: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  margin-top: 1rem;
}

#login-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 15px rgba(102,126,234,0.4);
}

#login-button:active {
  transform: translateY(0);
}

/* 聊天容器布局 */
#chat-container {
  position: fixed;
  top: env(safe-area-inset-top, 0);
  left: 0;
  right: 0;
  bottom: 0;
  display: none;
  flex-direction: column;
  padding: 1rem;
  padding-bottom: calc(1rem + env(safe-area-inset-bottom));
  max-height: 100vh;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.85);
}

#toggle-stream {
  position: fixed;
  top: max(1rem, env(safe-area-inset-top));
  right: 1rem;
  background: #10b981;
  color: white;
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 24px;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

/* 聊天区域 */
#chat-box {
  flex: 1;
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(5px);
  border-radius: 16px;
  padding: 1rem;
  overflow-y: auto;
  margin-top: 4rem;
  margin-bottom: 0.5rem;
  -webkit-overflow-scrolling: touch; 
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.05);
}

/* 消息气泡 */
.message {
  padding: 1rem 1.2rem;
  border-radius: 18px;
  margin-bottom: 1rem;
  max-width: 85%;
  word-wrap: break-word;
  position: relative;
  animation: messagePopIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transition: all 0.3s ease;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
  font-size: 1rem;
  line-height: 1.5;
}

@keyframes messagePopIn {
  from {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.user {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: #fff;
  margin-left: auto;
  border-bottom-right-radius: 4px;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
  margin-right: 0.5rem;
}

.user::before {
  content: '';
  position: absolute;
  bottom: -5px;
  right: 15px;
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  transform: rotate(45deg);
}

.ai {
  background: rgba(255,255,255,0.95);
  border: 1px solid rgba(0,0,0,0.05);
  color: #2d3748;
  margin-right: auto;
  border-bottom-left-radius: 4px;
  margin-left: 0.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.ai::before {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 15px;
  width: 10px;
  height: 10px;
  background: rgba(255,255,255,0.8);
  border-left: 1px solid rgba(0,0,0,0.05);
  border-bottom: 1px solid rgba(0,0,0,0.05);
  transform: rotate(45deg);
}

/* 输入区域 */
#input-area {
  background: transparent;
  position: relative;
  z-index: 2;
}

.input-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 
    0 4px 12px rgba(0, 0, 0, 0.1),
    inset 0 0 0 1px rgba(255, 255, 255, 0.2);
  transform: translateY(0);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-radius: 24px;
  padding: 0.5rem 0.7rem;
  margin-bottom: 0.5rem;
  margin: 0.75rem;
  box-shadow: 
    0 4px 12px rgba(0, 0, 0, 0.05),
    inset 0 1px 2px rgba(0, 0, 0, 0.06);
}

.input-container:focus-within {
  transform: translateY(-2px);
  box-shadow: 
    0 8px 16px rgba(0, 0, 0, 0.12),
    inset 0 0 0 1px rgba(255, 255, 255, 0.3);
}

#message-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 0.8rem 1rem;
  font-size: 1rem;
  line-height: 1.5;
  color: #1a1a1a;
  resize: none;
  min-height: 24px;
  max-height: 150px;
}

#message-input:focus {
  outline: none;
}

#message-input::placeholder {
  color: #8e8e93;
}

#send-button {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: white;
  border: none;
  border-radius: 20px;
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  margin-right: 0.5rem;
}

#send-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.action-buttons {
  display: flex;
  padding: 0.75rem 1rem;
  padding-bottom: max(0.75rem, env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.9);
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: 0 0 24px 24px;
}

#file-label {
  width: 100%;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem;
  border-radius: 16px;
  font-size: 1rem;
  font-weight: 500;
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

#file-label:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

#file-label:active {
  transform: translateY(0);
}

#camera-button {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

@media (max-width: 480px) {
  #auth-container h2 {
    font-size: 1.6rem;
  }

  .input-container {
    padding: 0.4rem 0.6rem;
  }
  #message-input {
    padding: 0.4rem 0.5rem;
    font-size: 0.9rem;
  }
  #send-button {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
  }
  .action-buttons {
    padding: 0.5rem 1rem calc(0.5rem + env(safe-area-inset-bottom, 20px)) 1rem;
  }
  .action-button {
    font-size: 0.85rem;
    min-height: 44px;
  }

  .message {
    max-width: 85%;
    font-size: 0.95rem;
  }
  
  .input-container {
    margin-bottom: env(safe-area-inset-bottom, 0);
  }
  
  /* 增加触摸区域 */
  .action-button {
    min-height: 44px;
    padding: 0.7rem;
  }
  
  /* 优化键盘弹出时的布局 */
  @supports (-webkit-touch-callout: none) {
    #chat-box {
      height: calc(100vh - 180px - env(safe-area-inset-bottom, 0));
    }
  }
}

.message p {
  margin: 0 0 0.8em 0;
}

.message pre {
  background: rgba(0,0,0,0.05);
  padding: 0.5em;
  border-radius: 4px;
  overflow-x: auto;
  margin: 0.5em 0;
  font-size: 0.9rem;
}

.message code {
  font-family: 'Consolas', 'Monaco', monospace;
  background: rgba(0,0,0,0.05);
  padding: 0.2em 0.4em;
  border-radius: 3px;
}

.message ul, .message ol {
  margin: 0.5em 0;
  padding-left: 1.5em;
}

.message blockquote {
  border-left: 3px solid rgba(0,0,0,0.1);
  margin: 0.5em 0;
  padding-left: 1em;
}

.message img {
  max-width: 100%;
  border-radius: 4px;
  margin: 0.5em 0;
}

.message table {
  border-collapse: collapse;
  margin: 0.5em 0;
  width: 100%;
}

.message th, .message td {
  border: 1px solid rgba(0,0,0,0.1);
  padding: 0.4em 0.6em;
}

/* iOS 安全区域适配 */
@supports (padding: max(0px)) {
  #chat-container {
    padding-top: max(1rem, env(safe-area-inset-top));
    padding-bottom: max(1rem, env(safe-area-inset-bottom));
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
  }
}

@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, #1a1c2c 0%, #4a2b3c 100%);
  }
  
  #auth-container,
  #chat-container {
    background: rgba(30, 30, 40, 0.7);
  }
  
  .message.ai {
    background: rgba(40, 40, 50, 0.8);
    color: #e2e8f0;
  }
  
  .input-container {
    background: rgba(40, 40, 50, 0.8);
  }
  
  #message-input {
    color: #e2e8f0;
  }
  
  #message-input::placeholder {
    color: rgba(226, 232, 240, 0.5);
  }
}

/* 加载动画 */
.loading {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  margin: 8px 0;
}

.loading span {
  width: 8px;
  height: 8px;
  background: currentColor;
  border-radius: 50%;
  animation: loadingDots 1.4s infinite ease-in-out;
}

.loading span:nth-child(2) { animation-delay: 0.2s; }
.loading span:nth-child(3) { animation-delay: 0.4s; }

@keyframes loadingDots {
  0%, 80%, 100% { transform: scale(0); opacity: 0.3; }
  40% { transform: scale(1); opacity: 1; }
}

@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, #1a1c2c 0%, #4a2b3c 100%);
  }
  
  #auth-container {
    background: rgba(30, 30, 40, 0.9);
  }
  
  #auth-container h2 {
    color: #e2e8f0;
  }
  
  .input-group input {
    background: rgba(40, 40, 50, 0.8);
    color: #e2e8f0;
  }
  
  .message.ai {
    background: rgba(40, 40, 50, 0.95);
    color: #e2e8f0;
  }
  
  .input-container {
    background: rgba(40, 40, 50, 0.95);
  }
  
  #message-input {
    color: #e2e8f0;
  }
  
  .action-buttons {
    background: rgba(30, 30, 40, 0.9);
  }
}

/* iOS 特定优化 */
@supports (-webkit-touch-callout: none) {
  #chat-container {
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
  }
  
  .input-container {
    margin-bottom: max(0.75rem, env(safe-area-inset-bottom));
  }
  
  /* 优化输入框在键盘弹出时的布局 */
  @media (max-height: 700px) {
    #chat-box {
      height: calc(100vh - 180px - env(safe-area-inset-bottom));
    }
  }
  
  /* 禁用iOS默认的点击高亮 */
  * {
    -webkit-tap-highlight-color: transparent;
  }
  
  /* 优化iOS滚动行为 */
  #chat-box {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
  }
}

/* 移动端特别优化 */
@media (max-width: 480px) {
  #auth-container {
    margin: 16px;
    width: calc(100% - 32px);
    padding: 1.5rem;
  }
  
  .input-group input {
    font-size: 16px;
    padding: 0.8rem 1rem;
  }
}

/* 语音按钮样式 */
#speech-button {
  background: transparent;
  border: none;
  padding: 0.5rem;
  color: #6366f1;
  cursor: pointer;
  border-radius: 50%;
  transition: all 0.3s ease;
}

#speech-button.recording {
  animation: pulse 1.5s infinite;
  background: rgba(99, 102, 241, 0.1);
  color: #4f46e5;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

/* iOS 优化 */
@supports (-webkit-touch-callout: none) {
  #speech-button {
    min-height: 44px;
    min-width: 44px;
  }
}