:root {
  --bg-color: #ffffff;
  --text-color: #1a1a1a;
  --primary-color: #147EFB;
  --secondary-color: #f5f5f5;
  --border-color: #e0e0e0;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --user-bg-color: #147EFB;
  --user-text-color: #ffffff;
  --ai-bg-color: #f5f5f5;
  --ai-text-color: #1a1a1a;
  --header-bg-color: #ffffff;
  --header-text-color: #1a1a1a;
  --contact-btn-color: #1a1a1a;
  --donate-btn-color: #1a1a1a;
  --clear-btn-color: #1a1a1a;
  --lang-toggle-color: #1a1a1a;
  --theme-toggle-color: #1a1a1a;
  --read-novels-color: #1a1a1a;
}

[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #ffffff;
  --primary-color: #147EFB;
  --secondary-color: #2d2d2d;
  --border-color: #404040;
  --shadow-color: rgba(255, 255, 255, 0.1);
  --user-bg-color: #147EFB;
  --user-text-color: #ffffff;
  --ai-bg-color: #2d2d2d;
  --ai-text-color: #ffffff;
  --header-bg-color: #333;
  --header-text-color: #ffffff;
  --contact-btn-color: #ffffff;
  --donate-btn-color: #ffffff;
  --clear-btn-color: #ffffff;
  --lang-toggle-color: #ffffff;
  --theme-toggle-color: #ffffff;
  --read-novels-color: #ffffff;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
}

.header {
  position: fixed;
  top: 0;
  width: 100%;
  max-width: 1200px;
  z-index: 1000;
  background-color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 30px;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--header-bg-color);
  color: var(--header-text-color);

}

.header-buttons {
  display: flex;
  font-size: 16px;
  gap: 10px;
}

@media (max-width: 500px) {
  .header-buttons button {
    font-size: 12px;
  }
}

.contact-btn,
.clear-btn,
.donate-btn,
.lang-toggle,
.theme-toggle,
.read-novels {
  color: var(--contact-btn-color);
}

.theme-toggle,
.clear-btn,
.voice-btn,
.donate-btn,
.contact-btn,
.read-novels {
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover,
.clear-btn:hover,
.voice-btn:hover,
.donate-btn:hover,
.contact-btn:hover,
.read-novels:hover {
  background-color: var(--secondary-color);
}

.chat-container {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  margin-bottom: 80px;
  margin-top: 25px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.message {
  display: flex;
  gap: 15px;
  max-width: 80%;
}

.user-message {
  margin-left: auto;
  flex-direction: row-reverse;
}

.ai-message {
  flex-direction: row;
  color: #111827;
  padding: 12px;
  border-radius: 8px;
  margin: 8px 0;
  max-width: 80%;
  line-height: 1.6;
}

.avatar {
  width: 40px;
  height: 40px;
  margin-right: 10px;
  border-radius: 50%;
  background-color: var(--primary-color);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

.content {
  padding: 15px 20px;
  border-radius: 12px;
  max-width: 70%;
  box-shadow: 0 2px 4px var(--shadow-color);
  position: relative;
}

.user-message .content {
  background-color: var(--user-bg-color);
  color: var(--user-text-color);
}

.ai-message .content {
  background-color: var(--ai-bg-color);
  color: var(--ai-text-color);
}

.timestamp {
  font-size: 0.8em;
  color: var(--text-color);
  opacity: 0.7;
  margin-top: 5px;
  margin-right: 13px;
}

.copy-btn {
  position: absolute;
  right: 10px;
  bottom: 10px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-color);
  opacity: 0.7;
}

.copy-btn:hover {
  opacity: 1;
}

.input-container {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  padding: 10px 20px;
  background-color: var(--bg-color);
  border-top: 1px solid var(--border-color);
}

.input-wrapper {
  width: 100%;
  max-width: 1200px;
  display: flex;
  gap: 10px;
}

.input-box {
  width: 100%;
  padding: 15px 120px 15px 20px;
  border: 1px solid var(--border-color);
  border-radius: 25px;
  background-color: var(--bg-color);
  color: var(--text-color);
  resize: none;
  min-height: 50px;
  max-height: 200px;
  box-shadow: 0 2px 4px var(--shadow-color);
}

.send-btn {
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  flex-shrink: 0;
}

.send-btn:hover {
  opacity: 0.9;
}

.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, .3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

pre {
  background-color: var(--secondary-color);
  padding: 10px;
  border-radius: 5px;
  overflow-x: auto;
}

code {
  font-family: 'Courier New', Courier, monospace;
  color: var(--text-color);
}

a {
  color: var(--primary-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}


.announcement {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--bg-color);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 8px var(--shadow-color);
  z-index: 1000;
  max-width: 400px;
  width: 90%;
  text-align: center;
}

.announcement h2 {
  margin-bottom: 10px;
}

.announcement ul {
  text-align: left;
  margin: 10px 0;
  padding-left: 20px;
}

.announcement button {
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 20px;
  cursor: pointer;
}

.announcement button:hover {
  opacity: 0.9;
}


/* 打赏模态框样式 */
.donate-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.donate-content {
  background-color: var(--bg-color);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 8px var(--shadow-color);
  max-width: 400px;
  width: 90%;
  text-align: center;
}

.donate-content h2 {
  margin-bottom: 10px;
}

.qrcode-container {
  display: flex;
  justify-content: space-around;
  margin: 20px 0;
}

.qrcode-container img {
  width: 150px;
  height: 150px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.donate-content button {
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 20px;
  cursor: pointer;
}

.donate-content button:hover {
  opacity: 0.9;
}

/* 联系我们模态框样式 */
.contact-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.contact-content {
  background-color: var(--bg-color);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 8px var(--shadow-color);
  max-width: 400px;
  width: 90%;
  text-align: center;
}

.contact-content h2 {
  margin-bottom: 10px;
}

.contact-content ul {
  text-align: left;
  margin: 10px 0;
  padding-left: 20px;
}

.contact-content button {
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 20px;
  cursor: pointer;
}

.contact-content button:hover {
  opacity: 0.9;
}











/* 爱心雨特效 */
.floating-heart {
  position: fixed;
  top: -10px;
  z-index: 9999;
  font-size: 24px;
  animation: fall linear forwards;
  pointer-events: none;
}

@keyframes fall {
  to {
    transform: translateY(100vh);
  }
}

/* 背景闪烁效果 */
.romantic-glow {
  animation: romanticGlow 2s;
}

@keyframes romanticGlow {
  0% {
    background-color: inherit;
  }

  20% {
    background-color: #fff0f5;
  }

  100% {
    background-color: inherit;
  }
}