/* 三国推演：沿用主站浅米纸色 + 白卡片 + 琥珀金，叠加古籍版框、朱印与兵棋方格的气质。
   视图专属样式请加 .sg-v-<视图id> 前缀，写在本文件对应分节或独立 css（在 index.html 引入并带 ?v=）。 */
:root {
  /* 页宽：铺满浏览器，两侧只留随屏宽变化的边距（窄屏 16px，宽屏至多 40px） */
  --sg-page-max: none;
  --sg-gutter: clamp(16px, 2.2vw, 40px);
  --sg-bg: #ede8df;
  --sg-surface: #ffffff;
  --sg-surface-soft: #faf8f5;
  --sg-surface-hover: #f3efe6;
  --sg-border: #ded8ce;
  --sg-border-strong: #c9bfae;

  --sg-text: #231f18;
  --sg-text-muted: #5f574a;
  --sg-text-sub: #948b7c;

  --sg-primary: #b86a0a;          /* 琥珀深金：按钮、选中 */
  --sg-primary-hover: #92400e;
  --sg-primary-light: rgba(180, 83, 9, 0.08);
  --sg-primary-border: #d99a4e;

  --sg-seal: #a8321e;              /* 朱印 */
  --sg-ink: #2b2620;               /* 墨 */

  /* 势力色（兵棋符号，D3）：蜀绿、魏蓝、吴红 */
  --sg-shu: #2f6b3f;
  --sg-wei: #2c4f7c;
  --sg-wu: #a33a2a;

  /* 可信度标签色 */
  --sg-tag-zhengshi: #2c4f7c;
  --sg-tag-peizhu: #5b4a8b;
  --sg-tag-tongjian: #2f6b3f;
  --sg-tag-dizhi: #7a5a1e;
  --sg-tag-kaozheng: #44606b;
  --sg-tag-yanyi: #a33a2a;
  --sg-tag-tuice: #78716c;

  --sg-ok: #15803d;
  --sg-bad: #b91c1c;
  --sg-warn: #b45309;

  --sg-radius-sm: 6px;
  --sg-radius: 10px;
  --sg-shadow-card: 0 2px 6px rgba(44, 37, 25, 0.05), 0 1px 2px rgba(44, 37, 25, 0.04);

  --sg-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", sans-serif;
  --sg-font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --sg-font-mono: SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { margin: 0; padding: 0; }
body.sg-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--sg-bg);
  /* 兵棋方格底纹（四方向方格，D4） */
  background-image:
    linear-gradient(rgba(35, 31, 24, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(35, 31, 24, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--sg-text);
  font-family: var(--sg-font);
  font-size: 15px;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--sg-primary); }
a:hover { color: var(--sg-primary-hover); }
h1, h2, h3 { font-family: var(--sg-font-serif); font-weight: 700; letter-spacing: 0.02em; }

/* ===== 页头 ===== */
.sg-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--sg-border);
  box-shadow: 0 1px 3px rgba(44, 37, 25, 0.04);
}
.sg-header-row {
  max-width: var(--sg-page-max);
  margin: 0 auto;
  padding: 10px var(--sg-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.sg-brand { display: flex; align-items: center; gap: 10px; min-width: 0; flex-wrap: wrap; }
.sg-back {
  font-size: 13px;
  color: var(--sg-text-muted);
  text-decoration: none;
  white-space: nowrap;
}
.sg-back:hover { color: var(--sg-primary); }
.sg-seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border-radius: 4px;
  background: var(--sg-seal);
  color: #fff6ea;
  font-family: var(--sg-font-serif);
  font-size: 18px;
  font-weight: 700;
  box-shadow: inset 0 0 0 2px rgba(255, 246, 234, 0.35);
}
.sg-seal-lg { width: 48px; height: 48px; font-size: 28px; }
.sg-title-group { min-width: 0; }
.sg-title { margin: 0; font-size: 20px; line-height: 1.2; color: var(--sg-ink); }
.sg-subtitle { margin: 0; font-size: 12px; color: var(--sg-text-sub); letter-spacing: 0.12em; }
.sg-user {
  font-size: 12px;
  color: var(--sg-text-muted);
  background: var(--sg-surface-soft);
  border: 1px solid var(--sg-border);
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}
.sg-user.is-admin { color: var(--sg-ok); border-color: #bbf7d0; background: #f0fdf4; }
.sg-user.is-denied { color: var(--sg-bad); border-color: #fecaca; background: #fef2f2; }
.sg-user.is-viewer { color: #7a4b12; border-color: #f0d9b0; background: #fff8eb; }
/* 页头右侧：身份 + 登录 / 退出 / 分享 */
.sg-account { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.sg-account-actions { display: inline-flex; gap: 6px; align-items: center; }
.sg-account-actions .sg-btn-sm { padding: 2px 10px; font-size: 12px; }
.sg-share { position: relative; }
.sg-share > .sg-btn[data-level="login"], .sg-share > .sg-btn[data-level="public"] { border-color: #c98a1c; color: #8a4b0c; background: #fff4dc; }
.sg-share-pop { position: absolute; right: 0; top: calc(100% + 6px); z-index: 50; width: min(340px, calc(100vw - 24px)); box-sizing: border-box;
  background: var(--sg-surface, #fff); border: 1px solid var(--sg-border); border-radius: 10px; padding: 10px 12px; box-shadow: 0 10px 30px rgba(44, 37, 25, .18); text-align: left; font-size: 13px; }
.sg-share-pop[hidden] { display: none; }
.sg-share-h { margin: 6px 0 4px; font-weight: 700; color: var(--sg-ink); }
.sg-share-opt { display: block; padding: 2px 0; cursor: pointer; }
.sg-share-note { margin: 4px 0; font-size: 12px; color: var(--sg-text-muted); line-height: 1.5; }
.sg-share-link { display: flex; gap: 6px; align-items: center; }
.sg-share-link code { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; background: var(--sg-surface-soft); border-radius: 6px; padding: 3px 6px; font-size: 12px; }
.sg-share-msg { margin: 6px 0 0; font-size: 12px; color: var(--sg-ok); }

/* ===== 导航 ===== */
.sg-nav {
  max-width: var(--sg-page-max);
  margin: 0 auto;
  padding: 0 var(--sg-gutter) 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.sg-tab {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 4px 14px;
  border: 1px solid var(--sg-border);
  border-radius: 999px;
  background: var(--sg-surface);
  color: var(--sg-text-muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.sg-tab:hover { color: var(--sg-text); background: var(--sg-surface-hover); }
.sg-tab.is-active,
.sg-tab[aria-current="page"] {
  background: var(--sg-primary);
  border-color: var(--sg-primary);
  color: #fff;
}
.sg-tab-external { margin-left: auto; border-style: dashed; }
.sg-tab-phase {
  margin-left: 6px;
  font-size: 11px;
  font-weight: 500;
  opacity: 0.7;
}

/* ===== 主体 ===== */
.sg-main {
  flex: 1;
  width: 100%;
  max-width: var(--sg-page-max);
  margin: 0 auto;
  padding: 20px var(--sg-gutter) 32px;
}
.sg-view-host { min-width: 0; }
.sg-view { min-width: 0; }
.sg-state { padding: 32px 0; color: var(--sg-text-muted); text-align: center; }
.sg-auth { display: flex; justify-content: center; }
.sg-auth-card { max-width: 420px; width: 100%; text-align: center; }
.sg-auth-card h2 { margin: 12px 0 6px; }
.sg-login { display: grid; gap: 8px; margin: 12px auto 4px; max-width: 280px; text-align: left; }
.sg-login label { display: grid; gap: 2px; font-size: 13px; color: var(--sg-text-sub); }
.sg-login input { padding: 6px 8px; border: 1px solid var(--sg-border); border-radius: 6px; font-size: 14px; }
.sg-login-msg { margin: 0; min-height: 1em; font-size: 12.5px; color: var(--sg-bad); }

/* 卡片：白底 + 古籍版框（内细外粗双线） */
.sg-card {
  background: var(--sg-surface);
  border: 1px solid var(--sg-border);
  border-radius: var(--sg-radius);
  box-shadow: var(--sg-shadow-card);
  padding: 20px;
  min-width: 0;
}
.sg-card h2 { margin: 0 0 8px; font-size: 20px; color: var(--sg-ink); }
.sg-card p { margin: 0 0 10px; color: var(--sg-text-muted); }

.sg-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 6px 16px;
  border: 1px solid var(--sg-border-strong);
  border-radius: 999px;
  background: var(--sg-surface);
  color: var(--sg-text);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  user-select: none;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}
.sg-btn:hover { background: var(--sg-surface-hover); }
.sg-btn:active { transform: translateY(1px); }
.sg-btn-primary { background: var(--sg-primary); border-color: var(--sg-primary); color: #fff; }
.sg-btn-primary:hover { background: var(--sg-primary-hover); border-color: var(--sg-primary-hover); color: #fff; }
.sg-btn-sm { min-height: 30px; padding: 4px 12px; font-size: 13px; }
.sg-btn-block { width: 100%; display: flex; }

/* 可信度标签 */
.sg-tag {
  display: inline-block;
  padding: 0 7px;
  border-radius: 3px;
  border: 1px solid currentColor;
  font-size: 12px;
  line-height: 18px;
  font-weight: 600;
  white-space: nowrap;
}
.sg-tag[data-tag="正史"] { color: var(--sg-tag-zhengshi); }
.sg-tag[data-tag="裴注"] { color: var(--sg-tag-peizhu); }
.sg-tag[data-tag="通鉴"] { color: var(--sg-tag-tongjian); }
.sg-tag[data-tag="地志"] { color: var(--sg-tag-dizhi); }
.sg-tag[data-tag="考证"] { color: var(--sg-tag-kaozheng); }
.sg-tag[data-tag="演义"] { color: var(--sg-tag-yanyi); }
.sg-tag[data-tag="推测"] { color: var(--sg-tag-tuice); border-style: dashed; }

/* ===== 占位视图 ===== */
.sg-placeholder {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 24px 22px 28px;
  border: 3px double var(--sg-border-strong);
}
.sg-placeholder::before {
  /* 版心左侧朱丝栏 */
  content: "";
  position: absolute;
  left: 12px;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: var(--sg-seal);
  opacity: 0.55;
}
.sg-placeholder-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.sg-placeholder-head h2 { margin: 0; font-size: 24px; }
.sg-phase {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--sg-primary-light);
  border: 1px solid var(--sg-primary-border);
  color: var(--sg-primary-hover);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}
.sg-placeholder-intro { font-size: 15px; }
.sg-placeholder ul { margin: 6px 0 12px; padding-left: 20px; color: var(--sg-text-muted); }
.sg-placeholder li { margin: 3px 0; }
.sg-placeholder-note { font-size: 12px; color: var(--sg-text-sub); border-top: 1px dashed var(--sg-border); padding-top: 10px; margin-top: 4px; overflow-wrap: anywhere; }
.sg-placeholder code { font-family: var(--sg-font-mono); font-size: 12px; background: var(--sg-surface-soft); padding: 0 4px; border-radius: 3px; overflow-wrap: anywhere; }

/* ===== 页脚状态条 ===== */
.sg-footer {
  border-top: 1px solid var(--sg-border);
  background: rgba(255, 255, 255, 0.85);
  font-size: 12px;
  color: var(--sg-text-sub);
}
.sg-footer-inner {
  max-width: var(--sg-page-max);
  margin: 0 auto;
  padding: 8px var(--sg-gutter);
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}
.sg-footer .is-ok { color: var(--sg-ok); }
.sg-footer .is-bad { color: var(--sg-bad); }
.sg-footer .is-warn { color: var(--sg-warn); }
.sg-footer-ai { color: inherit; text-decoration: underline dotted; text-underline-offset: 3px; }
.sg-footer-ai:hover, .sg-footer-ai:focus-visible { text-decoration-style: solid; }

@media (max-width: 640px) {
  body.sg-body { font-size: 14px; }
  .sg-header-row { padding: 8px 12px; }
  .sg-nav { padding: 0 12px 8px; gap: 5px; }
  .sg-tab { padding: 3px 11px; font-size: 13px; min-height: 32px; }
  .sg-tab-external { margin-left: 0; }
  .sg-tab-phase { display: none; }
  .sg-main { padding: 14px 12px 24px; }
  .sg-title { font-size: 18px; }
  .sg-placeholder { padding: 22px 16px 16px 24px; }
  .sg-placeholder-head h2 { font-size: 20px; }
  .sg-footer-inner { padding: 8px 12px; }
}