/* fy.celpipcelpip.com — 语域转换
   配色、字体、间距、"不用圆角"的处理都取自 fatou.celpipcelpip.com。
   明暗切换沿用 dashboard 的逻辑：暗色打底，.day-mode 覆盖成明亮；
   Auto 按钟点走（7:00–19:00 算白天），选择存 localStorage。
   区别是 dashboard 逐元素写了六十来行覆盖，这里改成一层"角色色"变量，
   两套值各写一遍就够，以后加组件不用再补一条 day-mode 规则。 */

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

[hidden] { display: none !important; }

:root {
  /* ── 品牌色：两种模式共用，取自 fatou ── */
  --navy:  #1e2d4a;
  --gold:  #b8912f;
  --dark:  #0f1c2e;
  --cream: #faf7f2;
  --light: #f0ebe2;

  /* ── 角色色：暗色（基准）── */
  --bg:         var(--dark);
  --ink:        #e8e4dc;
  --ink-soft:   #9aa3b0;
  --surface:    rgba(255,255,255,0.04);   /* 卡片 */
  --sunken:     rgba(255,255,255,0.02);   /* 结果框这类凹下去的区域 */
  --edge:       rgba(255,255,255,0.08);   /* 卡片描边 */
  --field-edge: rgba(255,255,255,0.16);   /* 输入框描边 */
  --rule:       rgba(255,255,255,0.07);   /* 分隔线 */
  --hover:      rgba(255,255,255,0.03);
  --input-bg:   rgba(255,255,255,0.05);
  --th-bg:      rgba(255,255,255,0.05);
  --th-ink:     rgba(255,255,255,0.5);

  --ok:   #6dbb8b;
  --warn: #d9ac54;
  --fail: #e0806c;
  --ok-bg:   rgba(109,187,139,0.15);
  --warn-bg: rgba(217,172,84,0.15);
  --fail-bg: rgba(224,128,108,0.15);
  --err-bg:   rgba(224,128,108,0.12);
  --err-edge: rgba(224,128,108,0.35);

  --login-bg:   var(--dark);
  --login-card: var(--cream);
  --watermark:  rgba(255,255,255,0.015);
}

/* ── 角色色：明亮 ──
   类挂在 <html> 而不是 <body> 上，这样 <head> 里的内联脚本能在首次绘制前
   就把它加上，不会先闪一下暗色再跳成亮色。 */
:root.day-mode {
  --bg:         var(--cream);
  --ink:        var(--navy);
  --ink-soft:   #64748b;
  --surface:    #ffffff;
  --sunken:     var(--cream);
  --edge:       #e8e2d8;
  --field-edge: #d8d1c4;
  --rule:       var(--light);
  --hover:      var(--cream);
  --input-bg:   #ffffff;
  --th-bg:      var(--navy);
  --th-ink:     #ffffff;

  --ok:   #2f7d4f;
  --warn: #9a6f14;
  --fail: #a4211b;
  --ok-bg:   #e6f1ea;
  --warn-bg: var(--light);
  --fail-bg: #fdecea;
  --err-bg:   #fdecea;
  --err-edge: #f0c8c4;

  --login-bg:   var(--light);
  --login-card: #ffffff;
  --watermark:  rgba(0,0,0,0.028);
}

/* Playfair 没有中文字形，中文会落到后面的宋体系列上，
   跟 Playfair 同为衬线，混排不违和。 */
body {
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'PingFang SC',
               'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.serif {
  font-family: 'Playfair Display', 'Songti SC', 'Noto Serif SC', 'SimSun', serif;
}

/* ── 导航（两种模式都是深色，与 dashboard 一致）───────── */
nav {
  background: var(--dark);
  padding: 1.2rem 5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: nowrap;
}
.logo {
  font-family: 'Playfair Display', 'Songti SC', serif;
  color: #fff;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  white-space: nowrap;      /* 导航里任何一项都不许折成两行 */
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
.logo span { color: var(--gold); }
.nav-right { display: flex; align-items: center; gap: 1.1rem; flex-wrap: nowrap; flex-shrink: 0; }
.nav-user {
  color: var(--gold);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}
.nav-link {
  color: rgba(255,255,255,0.4);
  text-decoration: none;
  font-size: 0.84rem;
  white-space: nowrap;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--gold); }

/* 明暗选择器。导航栏两种模式下都是深色，所以它自己始终是浅字深底。
   width/flex 必须写死 —— 通用 select 规则是 width:100%，一旦这条没生效
   它就会把整条导航挤到换行。 */
#theme-select {
  width: auto;
  flex: 0 0 auto;
  background-color: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.18);
  color: #fff;
  padding: 0.32rem 1.5rem 0.32rem 0.6rem;
  font-family: inherit;
  font-size: 0.78rem;
  line-height: 1.4;
  cursor: pointer;
  outline: none;
  transition: background-color 0.2s, border-color 0.2s;
  /* 箭头也要覆盖：通用规则用的是 --ink-soft，明亮模式下那是深灰，
     画在深色导航上几乎看不见 */
  background-image:
    linear-gradient(45deg,  transparent 50%, rgba(255,255,255,0.65) 50%),
    linear-gradient(135deg, rgba(255,255,255,0.65) 50%, transparent 50%);
  background-position: calc(100% - 13px) 54%, calc(100% - 9px) 54%;
  background-size: 4px 4px, 4px 4px;
  background-repeat: no-repeat;
}
#theme-select:hover { background-color: rgba(255,255,255,0.14); border-color: rgba(255,255,255,0.3); }
#theme-select:focus { border-color: var(--gold); }
#theme-select option { background: var(--dark); color: #fff; }

/* ── 页头（两种模式都是深色）──────────────────────────── */
.page-header { background: var(--navy); padding: 2.6rem 5rem; }
.page-header .eyebrow {
  color: var(--gold);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  margin-bottom: 0.6rem;
}
.page-header h1 {
  font-family: 'Playfair Display', 'Songti SC', 'Noto Serif SC', serif;
  color: #fff;
  font-size: 1.9rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}
.page-header p {
  color: rgba(255,255,255,0.45);
  font-size: 0.9rem;
  max-width: 620px;
  line-height: 1.8;
}

/* ── 主体 ─────────────────────────────────────────────── */
main { flex: 1; padding: 2.5rem 5rem 4rem; max-width: 1020px; width: 100%; }

.panel {
  background: var(--surface);
  border: 1px solid var(--edge);
  padding: 1.6rem;
  margin-bottom: 1.2rem;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.section-title {
  font-family: 'Playfair Display', 'Songti SC', 'Noto Serif SC', serif;
  font-size: 1.1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 1.2rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

label.field { display: block; }
.field > span {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  text-transform: uppercase;
  margin-bottom: 0.45rem;
}

textarea, select, input[type=text], input[type=password] {
  width: 100%;
  font-family: inherit;
  font-size: 16px;          /* 必须 ≥16px，否则 iOS 一点输入框整页放大且不缩回 */
  color: var(--ink);
  background: var(--input-bg);
  border: 1px solid var(--field-edge);
  padding: 0.7rem 0.8rem;
  transition: border-color 0.2s, background-color 0.25s ease, color 0.25s ease;
}
textarea { resize: vertical; line-height: 1.8; }
textarea:focus, select:focus, input:focus { outline: none; border-color: var(--gold); }
textarea::placeholder, input::placeholder { color: var(--ink-soft); opacity: 0.75; }

select {
  cursor: pointer;
  appearance: none;
  padding-right: 1.8rem;
  background-image:
    linear-gradient(45deg,  transparent 50%, var(--ink-soft) 50%),
    linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%);
  background-position: calc(100% - 15px) 53%, calc(100% - 10px) 53%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
/* 暗色下原生下拉列表在部分浏览器会用系统白底，指定一下免得刺眼 */
select option { background: var(--bg); color: var(--ink); }

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.grid.wide { grid-template-columns: 2fr 1fr 1fr; }

.counter { text-align: right; font-size: 0.75rem; color: var(--ink-soft); margin-top: 0.35rem; }
.counter.over { color: var(--fail); }

details.adv { margin-top: 1.1rem; }
details.adv summary {
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--ink-soft);
  letter-spacing: 0.06em;
  list-style: none;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
details.adv summary::-webkit-details-marker { display: none; }
details.adv summary::before {
  content: '';
  width: 0; height: 0;
  border-left: 5px solid var(--gold);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  transition: transform 0.2s;
}
details.adv[open] summary::before { transform: rotate(90deg); }
details.adv summary:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
details.adv > div { margin-top: 0.7rem; }

.actions { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; margin-top: 1.3rem; }

.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  border: 0;
  cursor: pointer;
  transition: opacity 0.2s;
}
.btn-gold { background: var(--gold); color: var(--dark); }
.btn-gold:hover:not(:disabled) { opacity: 0.85; }
.btn-gold:disabled { opacity: 0.45; cursor: default; }
.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1px solid var(--field-edge);
  padding: 0.45rem 1rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--gold); color: var(--ink); }

.check { display: inline-flex; align-items: center; gap: 0.5rem; font-size: 0.88rem; cursor: pointer; user-select: none; }
.check input { accent-color: var(--gold); width: 16px; height: 16px; cursor: pointer; }
.hint { color: var(--ink-soft); font-size: 0.78rem; line-height: 1.6; }

.err {
  margin-top: 0.9rem;
  padding: 0.7rem 0.9rem;
  background: var(--err-bg);
  border: 1px solid var(--err-edge);
  color: var(--fail);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ── 输出 ─────────────────────────────────────────────── */
#output {
  min-height: 140px;
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--sunken);
  border: 1px solid var(--edge);
  padding: 1rem 1.1rem;
  line-height: 1.9;
  font-size: 0.98rem;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}
#output:empty::before { content: '结果会出现在这里。'; color: var(--ink-soft); }
/* 推理模型在出正文前会沉默一阵，给个明确的「在想」而不是空白框 */
#output.thinking:empty::before {
  content: '模型正在思考…（高精度档会先推理再落笔，通常十几秒）';
  color: var(--gold);
}
#output.streaming::after {
  content: '▍';
  color: var(--gold);
  animation: blink 1s steps(2, start) infinite;
}
@keyframes blink { to { visibility: hidden; } }

table.metrics { width: 100%; border-collapse: collapse; font-size: 0.85rem; margin-top: 1.2rem; }
table.metrics th {
  background: var(--th-bg);
  color: var(--th-ink);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  text-align: right;
  padding: 0.65rem 1rem;
}
table.metrics td { padding: 0.6rem 1rem; border-bottom: 1px solid var(--rule); text-align: right; }
table.metrics th:first-child, table.metrics td:first-child { text-align: left; }
table.metrics td:first-child { color: var(--ink-soft); }
table.metrics tr:hover td { background: var(--hover); }
.delta { font-size: 0.72rem; margin-left: 0.4rem; }
.delta.good { color: var(--ok); }
.delta.bad { color: var(--warn); }

/* ── 保真校验 ─────────────────────────────────────────── */
.verdict {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 0.22rem 0.7rem;
  text-transform: uppercase;
}
.verdict.ok   { background: var(--ok-bg);   color: var(--ok); }
.verdict.warn { background: var(--warn-bg); color: var(--warn); }
.verdict.fail { background: var(--fail-bg); color: var(--fail); }

ul.issues { list-style: none; margin-top: 1rem; }
ul.issues li {
  border-left: 3px solid var(--rule);
  padding: 0.1rem 0 0.1rem 0.9rem;
  margin-bottom: 1.1rem;
  font-size: 0.88rem;
  line-height: 1.7;
}
ul.issues li.high   { border-color: var(--fail); }
ul.issues li.medium { border-color: var(--gold); }
ul.issues .tag {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 0.2rem;
}
ul.issues .frag { color: var(--ink-soft); font-size: 0.82rem; margin-top: 0.25rem; }
ul.issues .frag b { color: var(--ink); font-weight: 600; }

.spin {
  display: inline-block;
  width: 12px; height: 12px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: sp 0.7s linear infinite;
  vertical-align: -1px;
  margin-right: 0.45rem;
}
@keyframes sp { to { transform: rotate(360deg); } }

/* ── 页脚（两种模式都是深色）──────────────────────────── */
footer {
  background: var(--dark);
  padding: 1.5rem 5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
}
footer p { color: rgba(255,255,255,0.22); font-size: 0.78rem; }

/* ── 登录页 ───────────────────────────────────────────── */
.login-body {
  background: var(--login-bg);
  justify-content: center;
  align-items: center;
  padding: 1.5rem;
}
.login-body::before {
  content: '语';
  position: fixed;
  right: 4rem; top: 50%;
  transform: translateY(-50%);
  font-family: 'Playfair Display', 'Songti SC', serif;
  font-size: 26rem;
  color: var(--watermark);
  line-height: 1;
  pointer-events: none;
}
/* 登录卡片两种模式下都是浅色卡片，只是底色深浅不同——
   所以卡片内部的文字颜色固定用 navy，不跟随 --ink。 */
.login-card {
  background: var(--login-card);
  border-top: 3px solid var(--gold);
  padding: 2.6rem 2.2rem;
  width: 100%;
  max-width: 380px;
  position: relative;
  z-index: 1;
  color: var(--navy);
}
.login-card .brand {
  font-family: 'Playfair Display', 'Songti SC', serif;
  font-size: 0.95rem;
  margin-bottom: 1.6rem;
  letter-spacing: 0.03em;
}
.login-card .brand span { color: var(--gold); }
.login-card .eyebrow {
  color: var(--gold);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}
.login-card h1 {
  font-family: 'Playfair Display', 'Songti SC', 'Noto Serif SC', serif;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.6rem;
}
.login-card .field { margin-bottom: 1rem; }
.login-card .field > span { color: #64748b; }
.login-card input {
  background: #fff;
  border-color: #d8d1c4;
  color: var(--navy);
}
.login-card .btn { width: 100%; margin-top: 0.6rem; }
.login-card .err { background: #fdecea; border-color: #f0c8c4; color: #a4211b; }
.login-foot { color: #64748b; font-size: 0.75rem; margin-top: 1.4rem; line-height: 1.6; }

/* ── 移动端 ───────────────────────────────────────────── */
@media (max-width: 820px) {
  nav { padding: 1rem 1.2rem; gap: 0.6rem; }
  .nav-right { gap: 0.7rem; }
  .nav-right .nav-link[href^="https"] { display: none; }  /* 窄屏先让掉外链，保住主题选择器 */
  .logo { font-size: 0.95rem; }
  .nav-user { font-size: 0.72rem; letter-spacing: 0.04em; }
  #theme-select { padding: 0.28rem 1.2rem 0.28rem 0.45rem; font-size: 0.72rem;
                  background-position: calc(100% - 10px) 54%, calc(100% - 6px) 54%; }
  .page-header { padding: 2rem 1.5rem; }
  .page-header h1 { font-size: 1.5rem; }
  main { padding: 1.5rem 1.5rem 3rem; }
  .panel { padding: 1.1rem; }
  .grid.wide { grid-template-columns: 1fr; }
  .btn { width: 100%; text-align: center; }
  .actions { gap: 0.8rem; }
  footer { padding: 1.2rem 1.5rem; flex-direction: column; gap: 0.4rem; text-align: center; }
  .login-body::before { display: none; }
  table.metrics th, table.metrics td { padding: 0.55rem 0.6rem; font-size: 0.8rem; }
}

/* 系统开了「减少动态效果」就别做主题过渡的淡入淡出 */
@media (prefers-reduced-motion: reduce) {
  body, .panel, #output, textarea, select, input { transition: none; }
}
