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

html, body {
  height: 100%;
  font-family: Inter, Arial, sans-serif;
}

body {
  background: #f7f7f8;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px 20px 1cm;
  position: relative;
  transition: background-color 0.3s, color 0.3s;
}

/* ---------- HEADER BAR ---------- */
.chat-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: #4f46e5;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  font-size: 1.1rem;
  font-weight: 500;
  z-index: 100;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.header-left {
  white-space: nowrap;
}

/* ---------- BACKGROUND IMAGE ---------- */
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("/static/images/omi_live_background.jpeg") center/cover no-repeat;
  opacity: 0.3;
  z-index: -1;
}

/* ---------- CHAT CONTAINER ---------- */
.chat-shell {
  background-color: rgba(255, 255, 255, 0.92);
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  width: calc(100% - 40px);
  max-width: 960px;
  height: calc(100vh - 2cm);
  min-height: 520px;
  display: flex;
  flex-direction: column;
  padding: 20px;
  z-index: 1;
}

body:not(.active-chat) .chat-shell {
  justify-content: center;
  align-items: center;
}

.welcome {
  text-align: center;
  font-weight: 500;
  font-size: 2rem;
  margin-bottom: 30px;
  color: #444;
}

body:not(.active-chat) .input-bar {
  width: 90%;
  max-width: 600px;
}

/* 默认首页：未进入对话时隐藏 chat-box */
body:not(.active-chat) .chat-box {
  display: none;
}

body.active-chat .chat-shell {
  justify-content: space-between;
}

/* 预览页：强制显示并居中 chat-box */
body.preview .chat-box {
  display: flex !important;
  justify-content: center;
  align-items: flex-start;
  padding: 16px;
}

.chat-box {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 4px 6px 4px;
}

/* ---------- MESSAGE BUBBLES ---------- */
.msg {
  padding: 12px 16px;
  border-radius: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 1rem;
  max-width: 80%;
}

.msg.user {
  align-self: flex-end;
  background: #0b5cff;
  color: white;
}

.msg.bot {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.9);
  color: #111;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

/* 预览页把 bot 消息做成卡片并居中 */
body.preview .msg.bot {
  align-self: center;
  width: min(860px, 92vw);
  max-width: 100%;
  background: #fff;
  border: 1px solid #eef2f7;
  box-shadow: 0 6px 22px rgba(16, 24, 40, 0.08);
  border-radius: 16px;
  padding: clamp(16px, 3vw, 28px);
}

/* 预览图片效果 */
#preview-img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  margin: 12px auto 6px auto;
}

/* 工具栏：让三个按钮一排居中 */
body.preview .msg.bot .resize-btn,
body.preview .msg.bot .reshape-btn,
body.preview .msg.bot .copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 120px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1;
  border: 1px solid #c7d2fe;
  background: #eef2ff;
  color: #1f2937;
  margin-top: 14px;
  margin-right: 10px;
  transition: all .15s ease;
}

body.preview .msg.bot .resize-btn:hover,
body.preview .msg.bot .reshape-btn:hover,
body.preview .msg.bot .copy-btn:hover {
  background: #e0e7ff;
  transform: translateY(-1px);
}

body.preview .msg.bot .resize-btn:active,
body.preview .msg.bot .reshape-btn:active,
body.preview .msg.bot .copy-btn:active {
  transform: translateY(0);
}

/* ---------- INPUT BAR ---------- */
.input-bar {
  background: #e5e7eb;
  border-radius: 12px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: stretch;
  margin-top: 10px;
}

textarea {
  resize: none;
  border: none;
  background: white;
  padding: 12px;
  font-size: 1rem;
  outline: none;
  border-radius: 8px;
  line-height: 1.5;
  width: 100%;
  min-height: 48px;
}

/* ---------- OPTIONS LAYOUT ---------- */
.option-bar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.option-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.option-group label {
  font-size: 0.95rem;
  color: #333;
}

.option-group select,
.option-group input[type="number"],
.option-group button {
  padding: 8px 12px;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid #ccc;
  background: white;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.option-group select:focus,
.option-group input[type="number"]:focus,
.option-group button:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
  outline: none;
}

.option-group button {
  background-color: #4f46e5;
  color: white;
  cursor: pointer;
}

.option-group button:hover {
  background-color: #3730a3;
}

/* ---------- ACTION BUTTONS ---------- */
.action-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 14px;
}

.action-buttons button,
.tune-btn,
.generate-btn {
  background: #4f46e5;
  color: white;
  border: none;
  padding: 12px 20px;
  font-size: 1rem;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.tune-btn:hover,
.generate-btn:hover {
  background: #3730a3;
  transform: scale(1.05);
}

.tune-btn:active,
.generate-btn:active {
  transform: scale(0.97);
}

/* ---------- COPY BUTTON（在非预览页仍保留原样式） ---------- */
.copy-btn {
  margin-left: 10px;
  background: #e0e7ff;
  color: #1e3a8a;
  border: none;
  padding: 4px 8px;
  font-size: 0.9rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.copy-btn:hover {
  background: #c7d2fe;
}

/* ---------- RESIZE & RESHAPE（基础样式，预览页会覆盖为统一按钮风格） ---------- */
.resize-btn, .reshape-btn {
  background-color: #ffffff;
  border: 1px solid #aaa;
  color: #333;
  padding: 6px 12px;
  margin-top: 8px;
  margin-right: 8px;
  font-size: 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.resize-btn:hover, .reshape-btn:hover {
  background-color: #f0f0f0;
  border-color: #666;
}

.resize-btn {
  background-color: #e3f2fd;
  border-color: #90caf9;
}

.reshape-btn {
  background-color: #ede7f6;
  border-color: #b39ddb;
}

.resize-btn:hover {
  background-color: #bbdefb;
}

.reshape-btn:hover {
  background-color: #d1c4e9;
}

/* ---------- SELECT ---------- */
.shape-select {
  padding: 6px 10px;
  font-size: 14px;
  border-radius: 6px;
  border: 1px solid #ccc;
  background: #fff;
  margin-top: 8px;
  margin-right: 8px;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.shape-select:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 2px rgba(99,102,241,.2);
}
/* 让预览页的容器始终在页面正中 */
body.preview .chat-shell {
  justify-content: center;   /* 垂直居中 */
  align-items: center;       /* 水平居中 */
}

/* 预览页的 chat-box 居中承载内容 */
body.preview .chat-box {
  display: flex !important;
  justify-content: center;
  align-items: center;
  padding: 16px;
  width: 100%;
}

/* 卡片：让 bot 气泡变为居中卡片 */
body.preview .msg.bot {
  align-self: center;
  width: min(820px, 92vw);
  max-width: 100%;
  background: #fff;
  border: 1px solid #eef2f7;
  box-shadow: 0 6px 22px rgba(16,24,40,.08);
  border-radius: 16px;
  padding: clamp(16px, 3vw, 28px);
}

/* 图片样式（保持自适应 + 阴影 + 圆角） */
#preview-img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,.12);
  margin: 14px auto 6px auto;
}

/* 工具栏：按钮行居中、可换行 */
.tool-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

/* 统一三个按钮的风格（紫色主题） */
body.preview .msg.bot .resize-btn,
body.preview .msg.bot .reshape-btn,
body.preview .msg.bot .copy-btn {
  appearance: none;
  border: none;
  background: #4f46e5;       /* 主色 */
  color: #fff;
  padding: 10px 16px;
  min-width: 124px;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
  box-shadow: 0 2px 10px rgba(79,70,229,.18);
}

body.preview .msg.bot .resize-btn:hover,
body.preview .msg.bot .reshape-btn:hover,
body.preview .msg.bot .copy-btn:hover {
  background: #4338ca;       /* hover 更深 */
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(79,70,229,.22);
}

body.preview .msg.bot .resize-btn:active,
body.preview .msg.bot .reshape-btn:active,
body.preview .msg.bot .copy-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(79,70,229,.18);
}

/* 移动端适配 */
@media (max-width: 520px) {
  body.preview .msg.bot { padding: 14px; }
  .tool-row { gap: 10px; }
  body.preview .msg.bot .resize-btn,
  body.preview .msg.bot .reshape-btn,
  body.preview .msg.bot .copy-btn {
    min-width: 110px;
    padding: 9px 14px;
    font-size: 13.5px;
  }
}