:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --ink: #1c1c1e;
  --sub: #8a8a8e;
  --brand: #6c4cf0;
  --brand-ink: #ffffff;
  --line: #e6e6ea;
  --user: #ede8ff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

.topbar {
  position: sticky;
  top: 0;
  padding: 12px 16px calc(12px + env(safe-area-inset-top));
  background: var(--brand);
  color: var(--brand-ink);
  font-weight: 600;
}

#app {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 16px calc(24px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.hidden { display: none !important; }

.label, .hint { font-size: 14px; color: var(--sub); margin: 0 0 8px; }

textarea, input[type="text"], input[type="password"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  font: inherit;
  color: var(--ink);
  background: #fff;
  resize: vertical;
}

textarea:focus, input:focus { outline: 2px solid var(--brand); border-color: transparent; }

button {
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 600;
  background: #ececf1;
  color: var(--ink);
  cursor: pointer;
}

button.primary { background: var(--brand); color: var(--brand-ink); width: 100%; margin-top: 10px; }
button:disabled { opacity: 0.5; cursor: default; }

.row { display: flex; gap: 8px; align-items: stretch; }
.row input { flex: 1; min-width: 0; }
.row button { flex: 0 0 auto; }
/* 行内的主按钮不占满整行（覆盖 button.primary 的 width:100%） */
.row button.primary { width: auto; margin-top: 0; padding: 12px 20px; }

.msg { font-size: 14px; color: var(--sub); min-height: 1.2em; margin: 8px 0 0; }
.msg.error { color: #d23f31; }

h1 { font-size: 19px; margin: 0 0 4px; }
.podcast { color: var(--sub); font-size: 14px; margin: 0 0 12px; }

.status { display: flex; align-items: center; gap: 10px; color: var(--sub); font-size: 14px; padding: 8px 0; }
.spinner {
  width: 18px; height: 18px; border-radius: 50%;
  border: 3px solid var(--line); border-top-color: var(--brand);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.block { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 12px; }
.block summary { font-weight: 600; cursor: pointer; }

/* AI 摘要三卡片 */
.summary-cards { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.summary-card { background: #faf9ff; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.summary-card h3 { margin: 0 0 8px; font-size: 15px; color: var(--brand); }
.summary-card .sc-body { margin: 0; }
.summary-card .sc-list { margin: 0; padding-left: 1.3em; display: flex; flex-direction: column; gap: 6px; }
.summary-card .sc-list li { padding-left: 2px; }

/* 完整文字稿：分段显示 */
.transcript { margin-top: 10px; color: #333; max-height: 55vh; overflow-y: auto; font-size: 15px; }
.transcript p { margin: 0 0 0.9em; line-height: 1.75; }
/* 访谈问答样式 */
.transcript .qa { padding-left: 2.2em; text-indent: -2.2em; }
.transcript .qa-tag {
  display: inline-block; width: 1.5em; height: 1.5em; line-height: 1.5em;
  text-align: center; border-radius: 6px; margin-right: 0.6em; text-indent: 0;
  font-size: 13px; color: #fff;
}
.transcript .qa-q .qa-tag { background: var(--brand); }
.transcript .qa-a .qa-tag { background: #9a9aa2; }
.transcript .qa-q { color: #1c1c1e; font-weight: 500; }

.messages { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
.bubble { padding: 10px 14px; border-radius: 14px; max-width: 90%; white-space: pre-wrap; }
.bubble.user { align-self: flex-end; background: var(--user); }
.bubble.ai { align-self: flex-start; background: #f2f2f5; }