/* 美业获客AI顾问 - 样式（移动优先，主色 #4f8cff 系） */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #4f8cff;
  --primary-dark: #2f6fe0;
  --bg: #f5f7fa;
  --bubble-bot: #ffffff;
  --bubble-user: #4f8cff;
  --text: #1a1a1a;
  --text-light: #666;
  --border: #e5e7eb;
  --err: #e74c3c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --bubble-bot: #1c1f26;
    --bubble-user: #2f6fe0;
    --text: #e5e7eb;
    --text-light: #9ca3af;
    --border: #2c2f36;
  }
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}

body {
  display: flex;
  flex-direction: column;
  max-width: 640px;
  margin: 0 auto;
  min-height: 100vh;
}

/* 顶部 */
.app-header {
  padding: 14px 16px 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  flex-shrink: 0;
}
.app-header h1 {
  font-size: 19px;
  font-weight: 600;
}
.app-header .subtitle {
  font-size: 12px;
  opacity: 0.9;
  margin-top: 2px;
}
.quota-bar {
  margin-top: 8px;
  font-size: 12px;
  background: rgba(255,255,255,0.18);
  padding: 4px 10px;
  border-radius: 12px;
  display: inline-block;
}

/* 对话区 */
.chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 16px 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.msg {
  display: flex;
  width: 100%;
}
.msg.user { justify-content: flex-end; }
.msg.bot { justify-content: flex-start; }

.bubble {
  max-width: 86%;
  padding: 10px 14px;
  border-radius: 14px;
  word-wrap: break-word;
  word-break: break-word;
  box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}
.msg.bot .bubble {
  background: var(--bubble-bot);
  border: 1px solid var(--border);
  border-top-left-radius: 4px;
}
.msg.user .bubble {
  background: var(--bubble-user);
  color: #fff;
  border-top-right-radius: 4px;
}
.bubble .typing { color: var(--text-light); }
.bubble .err { color: var(--err); }
.bubble pre.code {
  background: #2d3138;
  color: #e5e7eb;
  padding: 8px 10px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 12px;
  margin: 6px 0;
}
.bubble code.inline {
  background: rgba(0,0,0,0.06);
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 13px;
}
.bubble ul { margin: 4px 0 4px 18px; }
.bubble strong { font-weight: 600; }

/* 预设问题 */
.quick-questions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 12px;
  flex-shrink: 0;
}
.quick-btn {
  background: var(--bubble-bot);
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}
.quick-btn:active { background: var(--primary); color: #fff; }

/* 输入区 */
.input-bar {
  display: flex;
  gap: 8px;
  padding: 10px 12px;
  background: var(--bubble-bot);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
#input {
  flex: 1;
  resize: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 15px;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  max-height: 120px;
}
#send-btn {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
}
#send-btn:disabled { opacity: 0.5; }

/* 页脚 AI 标识（常驻固定，不可折叠） */
.footer-notice {
  text-align: center;
  font-size: 12px;
  color: var(--text-light);
  background: var(--bubble-bot);
  border-top: 1px solid var(--border);
  padding: 6px;
  flex-shrink: 0;
}

/* 算力码解锁面板（额度用完时显示，紧凑版占屏 ~30%） */
.unlock-panel {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}
.unlock-card {
  background: var(--bubble-bot);
  border-radius: 12px;
  padding: 14px 14px 12px;
  max-width: 240px;
  width: 100%;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  text-align: center;
}
.unlock-card h3 {
  font-size: 15px;
  margin-bottom: 4px;
  color: var(--text);
}
.unlock-cta {
  font-size: 12px;
  color: var(--primary);
  margin-bottom: 10px;
}
.unlock-input-row {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
}
.unlock-input-row input {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 13px;
  font-family: monospace;
  letter-spacing: 0.5px;
  background: var(--bg);
  color: var(--text);
  min-width: 0;
}
#redeem-btn {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0 12px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}
#redeem-btn:disabled { opacity: 0.5; }
.redeem-msg {
  font-size: 11px;
  min-height: 14px;
  margin: 4px 0 8px;
  color: var(--text-light);
}
.redeem-msg.ok { color: #2ecc71; }
.redeem-msg.err { color: var(--err); }
.unlock-invite {
  border-top: 1px solid var(--border);
  padding-top: 10px;
  margin-top: 2px;
  text-align: center;
}
.invite-img {
  width: 192px;
  height: 192px;
  object-fit: contain;   /* 完整显示不变形,不裁剪 */
  border-radius: 8px;
  display: block;
  margin: 0 auto;
}
.invite-text {
  font-size: 13px;
  color: var(--text);
  margin-top: 10px;
  font-weight: 600;
}
.invite-sub {
  font-size: 11px;
  color: var(--text-light);
  margin-top: 3px;
}
.invite-sub2 {
  font-size: 11px;
  color: var(--text-light);
  margin-top: 1px;
}