/* 目录页：书目卡片 / 账本的气质。颜色只用来区分类别。 */
:root {
  --paper: #f4efe6;
  --paper-2: #ebe4d6;
  --ink: #1f1b16;
  --ink-2: #6b6256;
  --rule: #d6ccba;
  --focus: #1f1b16;

  --c-personal: #2f4f8f;  /* 个人：墨蓝 */
  --c-family: #b5532f;    /* 家庭：赭红 */
  --c-biz: #2f6b4a;       /* 常泰：松绿 */
  --c-system: #6b5a8a;    /* 系统：灰紫 */
  --c-none: #8a8172;

  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", Georgia, serif;
  --sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --text-hero: clamp(3rem, 2rem + 6vw, 6.5rem);
  --gutter: clamp(16px, 4vw, 56px);
  --fast: 150ms;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #17150f;
    --paper-2: #221f17;
    --ink: #ece4d4;
    --ink-2: #9d937f;
    --rule: #3a3428;
    --focus: #ece4d4;
    --c-personal: #8fa9e0;
    --c-family: #e2916f;
    --c-biz: #7fc19a;
    --c-system: #b3a2d6;
    --c-none: #9d937f;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.55 var(--sans);
  /* 纸面颗粒 */
  background-image: radial-gradient(rgba(0, 0, 0, .035) 1px, transparent 1px);
  background-size: 3px 3px;
}
main { max-width: 1080px; margin: 0 auto; padding: var(--gutter) var(--gutter) 96px; }
[hidden] { display: none !important; }
a { color: inherit; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

[data-cat="个人"] { --c: var(--c-personal); }
[data-cat="家庭"] { --c: var(--c-family); }
[data-cat="常泰"] { --c: var(--c-biz); }
[data-cat="系统"] { --c: var(--c-system); }
[data-cat="未分类"], [data-cat="全部"] { --c: var(--c-none); }

.eyebrow { margin: 0; font: 12px/1.4 var(--mono); letter-spacing: .08em; color: var(--ink-2); }
h1 { font: 700 var(--text-hero)/0.95 var(--serif); letter-spacing: .02em; margin: .1em 0 0; }

/* ---------- 登录 ---------- */
.login { max-width: 360px; margin: 12vh auto 0; }
.login-note { color: var(--ink-2); margin: 1rem 0 2rem; }
.login label { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 14px; }
.login input {
  display: block; width: 100%; margin-top: 4px; padding: 10px 0;
  background: transparent; border: 0; border-bottom: 1.5px solid var(--ink); border-radius: 0;
  font-size: 17px;
}
.login button[type=submit] {
  margin-top: 12px; width: 100%; padding: 12px; border: 0; border-radius: 2px;
  background: var(--ink); color: var(--paper); font-weight: 600; letter-spacing: .3em; cursor: pointer;
  transition: transform var(--fast);
}
.login button[type=submit]:active { transform: translateY(1px); }
.err { color: var(--c-family); min-height: 1.5em; font-size: 14px; }
.boot { color: var(--ink-2); }

/* ---------- 刊头 ---------- */
.masthead {
  display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap;
  padding-bottom: 20px; border-bottom: 3px double var(--ink);
}
.tools { display: flex; gap: 8px; align-items: center; flex: 0 1 340px; }
.tools input {
  flex: 1; min-width: 0; padding: 8px 10px; background: var(--paper-2);
  border: 1px solid var(--rule); border-radius: 2px;
}
.ghost {
  background: none; border: 1px solid transparent; color: var(--ink-2); cursor: pointer;
  padding: 6px 10px; border-radius: 2px; transition: border-color var(--fast), color var(--fast);
}
.ghost:hover { border-color: var(--rule); color: var(--ink); }

/* ---------- 类别筛选 ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 6px; margin: 18px 0 8px; }
.filters button {
  display: inline-flex; gap: 6px; align-items: baseline; cursor: pointer;
  padding: 5px 12px; border: 1px solid var(--rule); border-radius: 999px; background: transparent;
  transition: background-color var(--fast), color var(--fast), border-color var(--fast);
}
.filters button small { font: 11px var(--mono); color: var(--ink-2); }
.filters button:hover { border-color: var(--c); }
.filters button[aria-pressed="true"] { background: var(--c); border-color: var(--c); color: var(--paper); }
.filters button[aria-pressed="true"] small { color: inherit; opacity: .8; }

/* ---------- 最近上线 ---------- */
.recent { margin: 28px 0 8px; }
.recent h2, .cat h2 {
  display: flex; align-items: baseline; gap: 10px;
  font: 600 13px/1 var(--mono); letter-spacing: .14em; color: var(--ink-2);
  margin: 0 0 6px;
}
.recent-list {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 0 32px;
}
.recent-list .row { grid-template-columns: 1fr auto; border-left: 3px solid var(--c); padding-left: 12px; }
.recent-list .date { grid-column: 1 / -1; }
.recent-list .title { font: 600 1.15rem/1.35 var(--serif); }

/* ---------- 分类 ---------- */
.cat { margin-top: 48px; }
.cat h2 {
  font: 700 clamp(1.8rem, 1.4rem + 1.6vw, 2.6rem)/1 var(--serif); letter-spacing: .04em; color: var(--c);
  padding-bottom: 10px; border-bottom: 1.5px solid var(--c);
}
.cat h2 small { font: 12px var(--mono); color: var(--ink-2); letter-spacing: 0; }
.cat h3 {
  font: 600 12px/1 var(--sans); letter-spacing: .12em; color: var(--ink-2);
  margin: 22px 0 2px;
}

.rows { list-style: none; margin: 0; padding: 0; }
.row {
  display: grid; grid-template-columns: 5.2em 1fr auto; gap: 12px; align-items: baseline;
  padding: 10px 0; border-bottom: 1px dotted var(--rule);
}
.date { font: 13px var(--mono); color: var(--ink-2); font-variant-numeric: tabular-nums; }
.title {
  font-weight: 600; text-decoration: none;
  background: linear-gradient(var(--c), var(--c)) 0 100% / 0 1.5px no-repeat;
  transition: background-size var(--fast) ease-out;
}
.title:hover { background-size: 100% 1.5px; }
.new {
  background: var(--c-family); color: var(--paper); font: 600 10px/1 var(--sans);
  padding: 2px 5px; border-radius: 2px; vertical-align: 2px;
}
.meta { margin: 2px 0 0; font-size: 13px; color: var(--ink-2); overflow-wrap: anywhere; }
.path { font-family: var(--mono); font-size: 12px; }
.desc:not(:empty)::before { content: " · "; }
.more { padding: 0 8px; font-size: 18px; line-height: 1; }

.edit { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 10px; }
.edit select, .edit input[name=project] {
  padding: 5px 8px; background: var(--paper-2); border: 1px solid var(--rule); border-radius: 2px;
}
.edit input[name=project] { width: 9em; }
.edit .chk { display: inline-flex; gap: 4px; align-items: center; font-size: 14px; }
.edit button {
  padding: 5px 14px; border: 0; border-radius: 2px; background: var(--ink); color: var(--paper); cursor: pointer;
}

/* ---------- 隐藏 / 下线 ---------- */
.aside { margin-top: 40px; color: var(--ink-2); }
.aside summary { cursor: pointer; font: 13px var(--mono); }
.aside .row { opacity: .7; }

@media (max-width: 560px) {
  .row { grid-template-columns: 1fr auto; }
  .date { grid-column: 1 / -1; font-size: 12px; }
  .tools { flex-basis: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}