/* ============================================================
   悼溯茶馆 · 样式（白色为主 · 蓝白）
   设计方向：白纸 / 墨蓝文字 / 蓝色点缀
   兼容：Chrome / Edge / Firefox（含 file:// 直开）
   ============================================================ */
:root {
  --bg-deep: #e8eef7;      /* 页面最外层：极浅蓝灰 */
  --bg-dark: #f2f6fc;      /* 容器渐变浅蓝 */
  --bg-panel: #ffffff;     /* 面板：纯白 */
  --paper: #16233a;        /* 主文字：墨蓝 */
  --paper-dim: #5a6d85;    /* 次要文字：灰蓝 */
  --ink: #0f1c2e;
  --tea: #2f6fb2;          /* 主强调：沉稳蓝 */
  --tea-soft: #6b93c4;     /* 次级强调：雾蓝 */
  --accent: #3b9bd6;       /* 点缀：亮蓝 */
  --line: rgba(47, 111, 178, 0.22);
  --shadow: rgba(23, 58, 94, 0.16);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Source Han Sans SC",
                "Songti SC", "STSong", "SimSun", "Microsoft YaHei", serif;
  --fs-body: 17px;
}

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

html, body {
  height: 100%;
  background: #d7e1ef;
  color: var(--paper);
  font-family: var(--font-serif);
  font-size: var(--fs-body);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  /* Firefox 滚动条 */
  scrollbar-width: thin;
  scrollbar-color: rgba(47, 111, 178, 0.35) transparent;
}

/* 居中 16:9 画幅（letterbox） */
body {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#app {
  aspect-ratio: 16 / 9;
  width: min(100vw, calc(100vh * 16 / 9));
  position: relative;
  overflow: hidden;
  /* 容器尺寸查询：内部使用 cqh（容器高度单位）自适应 */
  container-type: size;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(59, 155, 214, 0.07), transparent 55%),
    radial-gradient(90% 60% at 50% 110%, rgba(47, 111, 178, 0.05), transparent 60%),
    var(--bg-dark);
  box-shadow: 0 0 60px rgba(23, 58, 94, 0.22);
}

/* 细颗粒噪点，模拟纸墨质感 */
#app::after {
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}

.screen {
  position: absolute; inset: 0;
  display: none;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
}
.screen.active { display: flex; }

.hidden { display: none !important; }

/* ---------------- 通用按钮 ---------------- */
.btn {
  font-family: var(--font-serif);
  font-size: 1.02em;
  letter-spacing: 0.18em;
  color: var(--tea);
  background: transparent;
  border: 1px solid var(--line);
  padding: 12px 34px;
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn:hover { border-color: var(--tea); color: var(--tea); background: rgba(47, 111, 178, 0.06); }
.btn-primary { border-color: var(--tea); color: #ffffff; background: var(--tea); }
.btn-primary:hover { background: #4a86c4; border-color: #4a86c4; color: #ffffff; }
.btn-danger { border-color: rgba(193, 84, 78, 0.55); color: #b5483f; }
.btn-danger:hover { border-color: #b5483f; background: rgba(193, 84, 78, 0.08); color: #a13f37; }
.btn-sm { padding: 8px 20px; font-size: 0.92em; letter-spacing: 0.1em; }

.chip {
  font-family: var(--font-serif);
  font-size: 0.88em;
  letter-spacing: 0.08em;
  color: var(--paper-dim);
  background: transparent;
  border: 1px solid transparent;
  padding: 6px 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.chip:hover { color: var(--tea); border-color: var(--line); }

.row { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.row.center { justify-content: center; }

/* ---------------- 顶栏 ---------------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  z-index: 5;
}
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 10px; }
.brand {
  font-size: 1.15em;
  letter-spacing: 0.5em;
  color: var(--tea);
  text-indent: 0.5em;
}
.chapter-label { color: var(--paper-dim); font-size: 0.92em; letter-spacing: 0.12em; }

/* ---------------- 封面 ---------------- */
#screen-cover {
  justify-content: center;
  align-items: center;
  overflow-y: auto;
  background:
    radial-gradient(80% 60% at 50% 38%, rgba(59, 155, 214, 0.09), transparent 62%),
    radial-gradient(60% 40% at 50% 100%, rgba(47, 111, 178, 0.06), transparent 70%),
    var(--bg-dark);
}
.cover-inner { text-align: center; padding: 40px 24px; animation: fadeUp 1s ease both; }
.cover-mark {
  font-size: 0.9em;
  letter-spacing: 0.8em;
  color: var(--tea-soft);
  text-indent: 0.8em;
  margin-bottom: 18px;
}
.cover-title {
  font-size: 3.4em;
  font-weight: 500;
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  color: var(--ink);
  text-shadow: 0 2px 18px rgba(47, 111, 178, 0.16);
  margin-bottom: 22px;
}
.cover-sub {
  color: var(--paper-dim);
  font-size: 0.98em;
  line-height: 2.2;
  letter-spacing: 0.14em;
  margin-bottom: 44px;
}
.cover-btns { display: flex; flex-direction: column; gap: 16px; align-items: center; }
.cover-foot {
  margin-top: 48px;
  text-align: center;
  color: rgba(90, 109, 133, 0.55);
  font-size: 0.78em;
  letter-spacing: 0.18em;
}

/* ---------------- 主菜单 ---------------- */
.menu-body {
  flex: 1;
  overflow-y: auto;
  padding: 30px 26px 40px;
}
.menu-hint {
  text-align: center;
  color: var(--paper-dim);
  letter-spacing: 0.2em;
  line-height: 2.2;
  margin: 8px 0 28px;
}
.character-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  max-width: 640px;
  margin: 0 auto 30px;
}
.char-card {
  border: 1px solid var(--line);
  background: #ffffff;
  padding: 22px 20px 18px;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.char-card:hover { border-color: var(--tea); transform: translateY(-2px); box-shadow: 0 10px 26px var(--shadow); }
.char-card::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--tea);
  opacity: 0;
  transition: opacity 0.25s;
}
.char-card:hover::before { opacity: 1; }
.char-name { font-size: 1.35em; letter-spacing: 0.3em; color: var(--ink); margin-bottom: 2px; }
.char-nick { font-size: 0.8em; color: var(--tea-soft); letter-spacing: 0.2em; margin-bottom: 10px; }
.char-desc {
  color: var(--paper-dim);
  font-size: 0.84em;
  line-height: 1.9;
  margin-bottom: 12px;
  min-height: 3.8em;
}
.char-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 6px; }
.char-actions .chip { border: 1px solid var(--line); }
.char-progress {
  font-size: 0.78em;
  color: var(--tea-soft);
  letter-spacing: 0.1em;
  margin-top: 10px;
}
.char-locked { opacity: 0.55; }

/* 好感度条 */
.aff-meter { display: flex; align-items: center; gap: 8px; }
.aff-label { font-size: 0.82em; color: var(--tea); letter-spacing: 0.1em; white-space: nowrap; }
.aff-track {
  width: 92px; height: 4px;
  background: rgba(47, 111, 178, 0.15);
  border-radius: 2px;
  overflow: hidden;
}
.aff-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--tea-soft), var(--tea));
  transition: width 0.5s ease;
}
.aff-text { font-size: 0.84em; color: var(--tea); letter-spacing: 0.1em; }

/* 面板 */
.panel {
  max-width: 640px;
  margin: 0 auto;
  border: 1px solid var(--line);
  background: #ffffff;
  padding: 26px 28px;
}
.panel-title { color: var(--tea); letter-spacing: 0.3em; font-weight: 500; margin-bottom: 12px; }
.panel-desc { color: var(--paper-dim); font-size: 0.9em; margin-bottom: 18px; line-height: 2; }
#side-story-btns { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------------- 剧情舞台 ---------------- */
.game-topbar { position: relative; z-index: 6; }
.stage {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}
.stage-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(70% 50% at 50% 18%, rgba(59, 155, 214, 0.10), transparent 60%),
    radial-gradient(50% 40% at 78% 82%, rgba(47, 111, 178, 0.07), transparent 65%),
    linear-gradient(180deg, #f4f8fd 0%, #e9f0f9 45%, #dde7f3 100%);
}
.stage-vignette {
  position: absolute; inset: 0;
  background: radial-gradient(120% 90% at 50% 40%, transparent 55%, rgba(23, 58, 94, 0.14) 100%);
}

.story-area {
  position: relative;
  z-index: 2;
  padding: 0 30px 16px;
  animation: fadeIn 0.5s ease both;
}
.story-speaker {
  display: inline-block;
  background: var(--tea);
  color: #ffffff;
  font-size: 0.95em;
  letter-spacing: 0.22em;
  text-indent: 0.22em;
  padding: 6px 18px;
  margin-bottom: 10px;
}
.story-speaker.is-narrator { background: transparent; color: var(--tea-soft); border: 1px solid var(--line); }
.story-text {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line);
  padding: 22px 26px;
  /* 高度随 16:9 画幅自适应（cqh = 容器高度单位，带 px 兜底） */
  min-height: 150px;
  min-height: clamp(110px, 30cqh, 170px);
  max-height: 44vh;
  max-height: 46cqh;
  overflow-y: auto;
  font-size: 1.02em;
  color: var(--paper);
  white-space: pre-wrap;
  word-break: break-word;
  box-shadow: 0 14px 40px var(--shadow);
  animation: fadeIn 0.4s ease both;
}
.story-text .cursor { display: inline-block; width: 0.6em; height: 1.1em; background: var(--tea); vertical-align: -0.15em; animation: blink 0.9s step-end infinite; }

.story-choices {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 560px;
}
.choice-btn {
  text-align: left;
  font-family: var(--font-serif);
  font-size: 0.98em;
  letter-spacing: 0.06em;
  color: var(--paper);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--line);
  border-left: 3px solid var(--tea-soft);
  padding: 12px 18px;
  cursor: pointer;
  transition: all 0.2s ease;
  animation: fadeUp 0.35s ease both;
  white-space: pre-wrap;
}
.choice-btn:hover { border-color: var(--tea); border-left-color: var(--tea); background: rgba(47, 111, 178, 0.05); transform: translateX(4px); }
.choice-btn.is-listen { border-left-color: var(--accent); }
.choice-hint {
  font-family: var(--font-serif);
  font-size: 0.85em;
  letter-spacing: 0.06em;
  color: var(--paper-dim);
  padding: 4px 2px;
  animation: fadeUp 0.35s ease both;
  opacity: 0.8;
}

.stage-foot {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 14px 0 18px;
}
.advance-btn {
  font-family: var(--font-serif);
  color: var(--paper-dim);
  background: transparent;
  border: none;
  font-size: 0.95em;
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  cursor: pointer;
  padding: 6px 20px;
  transition: color 0.2s;
  animation: pulse 2s ease-in-out infinite;
}
.advance-btn:hover { color: var(--tea); }
.chapter-progress {
  font-size: 0.75em;
  color: rgba(90, 109, 133, 0.55);
  letter-spacing: 0.2em;
}

/* ---------------- 聊天 ---------------- */
.chat-log {
  flex: 1;
  overflow-y: auto;
  padding: 24px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.msg { max-width: 78%; animation: fadeUp 0.3s ease both; }
.msg-user { align-self: flex-end; }
.msg-bot { align-self: flex-start; }
.msg-bubble {
  padding: 12px 16px;
  font-size: 0.95em;
  white-space: pre-wrap;
  word-break: break-word;
}
.msg-user .msg-bubble { background: var(--tea); color: #ffffff; border-radius: 4px 4px 0 4px; }
.msg-bot .msg-bubble {
  background: #ffffff;
  border: 1px solid var(--line);
  color: var(--paper);
  border-radius: 4px 4px 4px 0;
}
.msg-name { font-size: 0.78em; color: var(--tea-soft); letter-spacing: 0.15em; margin-bottom: 4px; }
.chat-inputbar {
  display: flex;
  gap: 10px;
  padding: 14px 22px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
}
#chat-input {
  flex: 1;
  font-family: var(--font-serif);
  font-size: 0.98em;
  color: var(--paper);
  background: #ffffff;
  border: 1px solid var(--line);
  padding: 11px 16px;
  outline: none;
  transition: border-color 0.2s;
}
#chat-input:focus { border-color: var(--tea); }
#chat-input::placeholder { color: rgba(90, 109, 133, 0.5); }

/* ---------------- 存档 ---------------- */
.save-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}
.save-slot {
  border: 1px solid var(--line);
  background: #ffffff;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.2s;
}
.save-slot:hover { border-color: var(--tea); }
.save-slot.empty { opacity: 0.45; }
.save-slot-num { font-size: 0.78em; color: var(--tea-soft); letter-spacing: 0.2em; }
.save-slot-info { font-size: 0.82em; color: var(--paper-dim); line-height: 1.7; min-height: 3.4em; }
.save-slot-time { font-size: 0.7em; color: rgba(90, 109, 133, 0.5); }
.save-slot-btns { display: flex; gap: 6px; margin-top: 2px; }
.save-slot-btns .chip { border: 1px solid var(--line); padding: 4px 10px; font-size: 0.78em; }

/* ---------------- 设置 ---------------- */
.settings-panel { max-width: 560px; }
.devtools-panel { max-width: 560px; }
.field { display: block; margin-bottom: 18px; }
.field > span { display: block; color: var(--paper-dim); font-size: 0.85em; letter-spacing: 0.1em; margin-bottom: 8px; }
.field input {
  width: 100%;
  font-family: var(--font-serif);
  font-size: 0.95em;
  color: var(--paper);
  background: #ffffff;
  border: 1px solid var(--line);
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s;
}
.field input:focus { border-color: var(--tea); }
.field select {
  width: 100%;
  font-family: var(--font-serif);
  font-size: 0.95em;
  color: var(--paper);
  background: #ffffff;
  border: 1px solid var(--line);
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s;
}
.field select:focus { border-color: var(--tea); }
.settings-msg { margin-top: 14px; font-size: 0.85em; color: var(--tea); min-height: 1.4em; }

/* ---------------- 模态 ---------------- */
.modal {
  position: absolute; inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 28, 46, 0.35);
  animation: fadeIn 0.25s ease both;
}
.modal-card {
  max-width: 460px;
  width: calc(100% - 48px);
  max-height: calc(100% - 48px);
  overflow-y: auto;
  background: #ffffff;
  border: 1px solid var(--line);
  padding: 30px 32px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(23, 58, 94, 0.25);
  animation: fadeUp 0.3s ease both;
}
.modal-title { color: var(--tea); letter-spacing: 0.25em; font-weight: 500; margin-bottom: 16px; }
.modal-text { color: var(--paper-dim); font-size: 0.92em; line-height: 2.1; margin-bottom: 24px; white-space: pre-wrap; }
.modal-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------------- 动效 ---------------- */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes blink { 50% { opacity: 0; } }
@keyframes pulse { 0%, 100% { opacity: 0.75; } 50% { opacity: 1; } }

/* ---------------- 响应式 ---------------- */
/* 竖屏（手机/窄窗口）：16:9 画幅过矮，回退为全屏纵向布局 */
@media (max-aspect-ratio: 4 / 5) {
  body { overflow: auto; }
  #app {
    aspect-ratio: auto;
    width: 100vw;
    height: 100%;
    min-height: 100vh;
  }
  .story-text {
    min-height: 150px;
    max-height: 44vh;
  }
}

@media (max-width: 640px) {
  :root { --fs-body: 16px; }
  .character-list { grid-template-columns: 1fr; }
  .cover-title { font-size: 2.5em; letter-spacing: 0.3em; text-indent: 0.3em; }
  .story-area { padding: 0 14px 10px; }
  .topbar { padding: 10px 12px; }
  .menu-body { padding: 20px 14px 30px; }
  .msg { max-width: 88%; }
  .brand { font-size: 1em; }
}

/* Chrome / Edge / Safari 滚动条（Firefox 用上面 scrollbar-width/color） */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(47, 111, 178, 0.3); border-radius: 3px; }

/* ---------------- 存档导出 / 导入工具栏 ---------------- */
.save-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 18px;
}
.save-tools .chip {
  border: 1px solid var(--line);
  background: transparent;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.save-tools .chip:hover {
  background: var(--tea);
  color: #fff;
  transform: translateY(-1px);
}

/* ---------------- 设置 / 存档页：内容超高时可滚动（16:9 画幅内） ---------------- */
#screen-settings,
#screen-saves {
  overflow-y: auto;
  padding-bottom: 22px;
}
#screen-settings .panel,
#screen-saves .panel {
  margin-top: 22px;
}