/* ============================================================
   app.css — 布局与组件样式（一律引用 theme.css 变量）
   主题：心动信号 · 温柔暧昧风
   ============================================================ */

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

html, body {
  height: 100%;
}

body {
  font-family: var(--font);
  background: var(--c-bg-grad);
  background-attachment: fixed;
  color: var(--c-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* —— 整体容器 —— */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  max-width: 720px;
  margin: 0 auto;
  background: var(--c-bg);
  box-shadow: var(--shadow);
}

/* —— 顶栏 —— */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 14px;
  border-bottom: 1px solid var(--c-border);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.topbar .brand {
  display: flex;
  align-items: center;
  gap: 11px;
}
.topbar .brand-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  border-radius: 12px;
  background: var(--c-primary-soft);
}
.topbar .brand-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--c-primary-deep);
  line-height: 1.25;
}
.topbar .brand-sub {
  font-size: 11px;
  color: var(--c-accent);
  letter-spacing: 1px;
  line-height: 1.2;
}
.topbar .topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.topbar .topbar-actions a.reset-btn {
  text-decoration: none;
  display: inline-block;
}
.topbar .reset-btn {
  font-size: 13px;
  color: var(--c-text-2);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  cursor: pointer;
  padding: 7px 13px;
  border-radius: 999px;
  transition: all 0.15s ease;
}
.topbar .reset-btn:hover {
  background: var(--c-primary-soft);
  color: var(--c-primary-deep);
  border-color: var(--c-primary-soft);
}

/* —— 消息区 —— */
.chat {
  flex: 1;
  overflow-y: auto;
  padding: 20px 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scroll-behavior: smooth;
}

/* —— 气泡 —— */
.msg {
  display: flex;
  flex-direction: column;
  max-width: 86%;
  animation: fadeUp 0.3s ease;
}
.msg.assistant { align-self: flex-start; align-items: flex-start; }
.msg.user { align-self: flex-end; align-items: flex-end; }

.bubble {
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 15px;
  white-space: pre-wrap;
  word-break: break-word;
}
.msg.assistant .bubble {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-top-left-radius: 6px;
  box-shadow: var(--shadow-sm);
}
.msg.user .bubble {
  background: var(--c-bubble-me);
  color: var(--c-text-invert);
  border-top-right-radius: 6px;
  box-shadow: var(--shadow-sm);
}

/* 打字光标 */
.cursor::after {
  content: "▋";
  color: var(--c-primary);
  animation: blink 0.8s infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* —— 选项 / 底部按钮 —— */
.options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.option {
  font-size: 14px;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-primary-deep);
  cursor: pointer;
  transition: all 0.15s ease;
}
.option:hover {
  border-color: var(--c-primary);
  background: var(--c-primary-soft);
}
.option:disabled { opacity: 0.5; cursor: not-allowed; }

/* —— 输入区 —— */
.inputbar {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  padding: 12px 16px 16px;
  border-top: 1px solid var(--c-border);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.inputbar textarea {
  flex: 1;
  resize: none;
  min-height: 44px;
  max-height: 120px;
  padding: 12px 16px;
  font-size: 15px;
  font-family: var(--font);
  border: 1px solid var(--c-border);
  border-radius: 22px;
  background: var(--c-surface);
  color: var(--c-text);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.inputbar textarea:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px var(--c-primary-soft);
}
.inputbar .send-btn {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  border: none;
  border-radius: 50%;
  background: var(--c-bubble-me);
  color: var(--c-text-invert);
  font-size: 18px;
  cursor: pointer;
  transition: transform 0.12s ease, opacity 0.15s;
  box-shadow: var(--shadow-sm);
}
.inputbar .send-btn:hover { transform: scale(1.05); opacity: 0.92; }
.inputbar .send-btn:active { transform: scale(0.95); }
.inputbar .send-btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* —— 结果页（已改为气泡式总结，这里仅保留兜底样式） —— */
.result {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-xl);
  padding: 22px 20px;
  box-shadow: var(--shadow);
}

/* —— 空状态 / 提示 —— */
.hint {
  text-align: center;
  color: var(--c-text-2);
  font-size: 13px;
  margin: 10px 0;
}

/* —— 移动端小屏微调 —— */
@media (max-width: 480px) {
  .chat { padding: 16px 14px 12px; }
  .msg { max-width: 90%; }
}