/* PPT 素材采集 — 视觉体系
 *
 * 设计说明 §7：浅灰页面背景、白色卡片、深色正文、少量红色强调；
 * 强调色只用于主按钮、当前导航、收藏和重要状态；
 * 不使用大面积渐变或复杂动画。
 *
 * 字体只用系统栈：本工具全程离线运行，不向任何外部地址请求资源。
 */

:root {
  --accent: #FF2442;
  --accent-ink: #ffffff;
  --accent-soft: rgba(255, 36, 66, 0.10);
  --accent-line: rgba(255, 36, 66, 0.32);
  --accent-hover: #e51f3b;

  --canvas: #f6f5f3;
  --surface: #ffffff;
  --surface-sunken: #f0efec;
  --ink: #1c1b19;
  --ink-soft: #56534e;
  --ink-faint: #8b8781;
  --line: #e4e2de;
  --line-strong: #d2cfc9;

  --danger: #b3261e;

  --radius: 10px;
  --radius-lg: 14px;
  --shadow: 0 1px 2px rgba(28, 27, 25, 0.05), 0 8px 20px rgba(28, 27, 25, 0.06);
  --shadow-lift: 0 2px 6px rgba(28, 27, 25, 0.08), 0 16px 32px rgba(28, 27, 25, 0.10);

  --sidebar-w: 208px;
  --gap: 20px;

  --sans: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC",
          "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --numeric: "Segoe UI", "Helvetica Neue", Arial, var(--sans);
}

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

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: 22px; }
h2 { font-size: 15px; }
p { margin: 0; }
a { color: inherit; }
img { display: block; max-width: 100%; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --- shell ---------------------------------------------------------------- */

.shell { display: flex; min-height: 100vh; }

.sidebar {
  position: sticky; top: 0; align-self: flex-start;
  display: flex; flex-direction: column;
  width: var(--sidebar-w); height: 100vh; padding: 22px 16px;
  background: var(--surface);
  border-right: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 9px; padding: 0 8px 22px; }
.brand__mark {
  width: 10px; height: 10px; border-radius: 3px;
  background: var(--accent);
}
.brand__name { font-weight: 600; letter-spacing: 0.02em; }

.nav { display: flex; flex-direction: column; gap: 2px; }
.nav__link {
  padding: 9px 12px; border-radius: var(--radius);
  color: var(--ink-soft); text-decoration: none;
}
.nav__link:hover { background: var(--surface-sunken); color: var(--ink); }
.nav__link.is-current {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.sidebar__foot {
  margin-top: auto; padding: 0 12px;
  color: var(--ink-faint); font-size: 12px; line-height: 1.6;
}

.main { flex: 1; min-width: 0; padding: 28px 32px 64px; }

/* --- page head ------------------------------------------------------------ */

.page-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: var(--gap); margin-bottom: 20px; flex-wrap: wrap;
}
.lede { color: var(--ink-soft); margin-top: 4px; }

.search input {
  width: 260px; padding: 9px 13px;
  background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  font: inherit; color: inherit;
}
.search input::placeholder { color: var(--ink-faint); }

/* --- stats ---------------------------------------------------------------- */

.stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px; margin-bottom: 22px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden;
}
.stat { padding: 14px 18px; background: var(--surface); }
.stat__num {
  display: block; font-family: var(--numeric);
  font-size: 24px; font-weight: 600; letter-spacing: -0.02em;
}
.stat__label { color: var(--ink-faint); font-size: 12px; }

/* --- filters -------------------------------------------------------------- */

.filters {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px;
  padding: 16px; margin-bottom: 14px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
.field { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--ink-soft); }
.field select, .field input, .field textarea {
  padding: 8px 11px; min-width: 150px;
  background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  font: inherit; font-size: 14px; color: var(--ink);
}
.field textarea { min-width: 320px; resize: vertical; }
.field--switch { flex-direction: row; align-items: center; gap: 8px; font-size: 14px; color: var(--ink); }
.field--switch input { min-width: 0; width: 16px; height: 16px; accent-color: var(--accent); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid var(--accent-line);
  font-size: 12px;
}
.chip--quiet {
  background: var(--surface-sunken); color: var(--ink-soft);
  border-color: transparent;
}
.chip button {
  border: 0; background: none; padding: 0; cursor: pointer;
  color: inherit; font: inherit; line-height: 1;
}

/* --- masonry -------------------------------------------------------------- */

.masonry { columns: 4 240px; column-gap: var(--gap); }
@media (max-width: 1180px) { .masonry { columns: 3 220px; } }
@media (max-width: 780px)  { .masonry { columns: 2 180px; } }

.card {
  position: relative;
  break-inside: avoid; margin-bottom: var(--gap);
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 140ms ease, border-color 140ms ease;
}
.card:hover { box-shadow: var(--shadow-lift); border-color: var(--line-strong); }
.card__frame { display: block; }
.card__frame img { width: 100%; height: auto; background: var(--surface-sunken); }

.card__bar {
  display: flex; align-items: center; gap: 6px;
  padding: 9px 11px; flex-wrap: wrap;
}
.score {
  font-family: var(--numeric); font-weight: 600; font-size: 13px;
  color: var(--ink);
}
.score::after { content: " 分"; font-size: 11px; color: var(--ink-faint); font-weight: 400; }

.card__tools {
  position: absolute; inset-inline: 8px; top: 8px;
  display: flex; gap: 6px; justify-content: flex-end;
  opacity: 0; transition: opacity 140ms ease;
}
.card:hover .card__tools,
.card:focus-within .card__tools { opacity: 1; }

.tool {
  padding: 4px 9px; border: 1px solid var(--line-strong); border-radius: 999px;
  background: rgba(255, 255, 255, 0.94); color: var(--ink-soft);
  font: inherit; font-size: 12px; text-decoration: none; cursor: pointer;
}
.tool:hover { color: var(--ink); border-color: var(--ink-faint); }
.tool.is-on { color: var(--accent); border-color: var(--accent-line); background: #fff; }
.tool--danger:hover { color: var(--danger); border-color: var(--danger); }

/* --- buttons -------------------------------------------------------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 9px 16px; border-radius: var(--radius);
  border: 1px solid transparent; cursor: pointer;
  font: inherit; font-size: 14px; text-decoration: none;
  transition: background-color 120ms ease, border-color 120ms ease;
}
.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: var(--accent-hover); }
.btn--ghost {
  background: var(--surface); color: var(--ink);
  border-color: var(--line-strong);
}
.btn--ghost:hover { border-color: var(--ink-faint); }
.btn--danger { background: var(--surface); color: var(--danger); border-color: var(--line-strong); }
.btn--danger:hover { border-color: var(--danger); }
.btn[disabled] { opacity: 0.55; cursor: progress; }

/* --- panels, collect, settings -------------------------------------------- */

.modes { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--gap); }
.panel {
  display: flex; flex-direction: column; align-items: flex-start; gap: 12px;
  padding: 20px; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius-lg);
}
.panel textarea, .panel input[type="text"], .panel input[type="file"] { width: 100%; }
.panel textarea {
  padding: 10px 12px; border: 1px solid var(--line-strong);
  border-radius: var(--radius); font: inherit; font-size: 14px; resize: vertical;
}
.hint { color: var(--ink-faint); font-size: 12px; }
.panel--wide { grid-column: 1 / -1; }

.libraries {
  display: grid; gap: 8px; width: 100%;
  margin: 0; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface-sunken);
}
.libraries legend { padding: 0 6px; color: var(--ink-faint); font-size: 12px; }
.library { display: flex; align-items: baseline; gap: 9px; cursor: pointer; }
.library input { width: 15px; height: 15px; accent-color: var(--accent); }
.library__name { font-weight: 600; }
.library__note { color: var(--ink-faint); font-size: 12px; }

.notice {
  margin-top: var(--gap); padding: 18px 20px;
  background: var(--surface-sunken); border: 1px solid var(--line);
  border-left: 3px solid var(--accent); border-radius: var(--radius-lg);
}
.notice ul { margin: 10px 0 0; padding-left: 18px; color: var(--ink-soft); }
.notice li + li { margin-top: 6px; }

.settings { display: grid; gap: var(--gap); max-width: 620px; }
.settings .panel { align-items: stretch; }
.settings .field input, .settings .field textarea { width: 100%; }

/* --- task result ---------------------------------------------------------- */

.task {
  margin-top: var(--gap); padding: 18px 20px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
.task__headline { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; }
.task__headline--good { color: var(--accent); }
.task__summary { margin-top: 6px; color: var(--ink-soft); }

.task__thumbs {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px;
}
.task__thumbs img {
  width: 108px; height: 76px; object-fit: cover;
  border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--surface-sunken);
}
.task__thumbs .more {
  display: flex; align-items: center; padding: 0 12px;
  color: var(--ink-faint); font-size: 13px;
}

.task__groups { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 6px; }
.task__groups li {
  display: flex; align-items: baseline; gap: 10px;
  font-size: 13px; color: var(--ink-soft);
}
.task__groups .count {
  min-width: 44px; text-align: right;
  font-family: var(--numeric); font-weight: 600; color: var(--ink);
}
.task__details { margin-top: 12px; font-size: 13px; color: var(--ink-faint); }
.task__details summary { cursor: pointer; }
.task__details .task__list { word-break: break-all; }
.task__list { margin: 12px 0 0; padding-left: 18px; color: var(--ink-soft); font-size: 13px; }
.task__list li + li { margin-top: 6px; }
.task .btn { margin-top: 14px; }

/* --- detail --------------------------------------------------------------- */

.detail { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 28px; align-items: start; }
@media (max-width: 1000px) { .detail { grid-template-columns: 1fr; } }

.detail__stage {
  padding: 16px; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius-lg);
}
.detail__stage img { width: 100%; height: auto; border-radius: var(--radius); }

.detail__side { display: grid; gap: 18px; }
.detail__score { color: var(--ink-soft); }
.detail__score strong { font-family: var(--numeric); font-size: 26px; color: var(--ink); }
.detail__actions { display: flex; flex-wrap: wrap; gap: 8px; }

.facts {
  display: grid; grid-template-columns: 86px minmax(0, 1fr);
  gap: 6px 14px; margin: 0; padding: 16px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg); font-size: 13px;
}
.facts dt { color: var(--ink-faint); }
.facts dd { margin: 0; }
.facts__link, .facts__path { word-break: break-all; color: var(--ink-soft); }

.tags, .reasons {
  display: grid; gap: 12px; padding: 16px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
.reasons ul { margin: 0; padding-left: 18px; color: var(--ink-soft); font-size: 13px; }
.reasons li + li { margin-top: 5px; }

/* --- empty ---------------------------------------------------------------- */

.empty {
  display: grid; justify-items: center; gap: 10px;
  padding: 64px 24px; text-align: center;
  background: var(--surface); border: 1px dashed var(--line-strong);
  border-radius: var(--radius-lg);
}
.empty p { color: var(--ink-soft); max-width: 42ch; }
.empty .btn { margin-top: 6px; }

/* --- toasts --------------------------------------------------------------- */

.toasts {
  position: fixed; right: 20px; bottom: 20px; z-index: 40;
  display: flex; flex-direction: column; gap: 8px;
}
.toast {
  padding: 11px 16px; max-width: 380px;
  background: var(--ink); color: #fff;
  border-radius: var(--radius); box-shadow: var(--shadow-lift);
  font-size: 13px;
}
.toast--error { background: var(--danger); }

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

/* --- sign in ---------------------------------------------------------------- */

.signin {
  display: grid; gap: 14px; justify-items: start;
  max-width: 360px; margin: 12vh auto 0; padding: 28px 30px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
}
.signin__form { display: grid; gap: 14px; width: 100%; }
.signin__form .field input { width: 100%; }
.signin__error { color: var(--danger); font-size: 13px; }