/* MECE App reader — extends styles.css */
:root {
  --bg-app: #F2EFE8;
}

body.app { background: var(--bg-app); }

.app-shell {
  display: grid;
  grid-template-columns: 260px 380px 1fr;
  height: 100vh;
  overflow: hidden;
}

/* === SIDEBAR === */
.app-sidebar {
  background: var(--paper);
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column;
  overflow-y: auto;
}
.app-sidebar-head {
  padding: 22px 22px 18px;
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
}
.app-side-group {
  padding: 18px 12px;
}
.app-side-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 0 12px 8px;
}
.app-side-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--ink-2);
  transition: background .12s;
}
.app-side-item:hover { background: var(--bg); }
.app-side-item.active { background: var(--ink); color: var(--paper); }
.app-side-item.active .app-side-count { color: var(--signal); }
.app-side-item-l { display: flex; align-items: center; gap: 10px; min-width: 0; }
.app-side-item-l .nd {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--signal-deep);
  flex-shrink: 0;
}
.app-side-item-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.app-side-count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  flex-shrink: 0;
}

/* === LIST === */
.app-list {
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column;
  background: var(--bg);
  overflow: hidden;
}
.app-list-head {
  padding: 22px 24px 16px;
  border-bottom: 1px solid var(--line);
}
.app-list-title {
  font-family: var(--serif);
  font-size: 30px;
  letter-spacing: -0.02em;
  line-height: 1;
  margin: 0;
}
.app-list-title em { font-style: italic; color: var(--trust); }
.app-list-sub {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--ink-3);
  margin-top: 8px;
  display: flex; gap: 12px;
}
.app-list-items {
  overflow-y: auto;
  flex: 1;
  padding: 8px;
}
.app-item {
  padding: 16px 16px;
  border-radius: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  display: flex; flex-direction: column; gap: 8px;
  transition: background .12s, border-color .12s;
}
.app-item:hover { background: var(--paper); }
.app-item.active {
  background: var(--paper);
  border-color: var(--line);
}
.app-item-meta {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}
.app-item-score {
  display: inline-flex; align-items: center;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--signal);
  font-weight: 500;
}
.app-item-score.high { background: var(--signal); color: var(--ink); }
.app-item-title {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.app-item-why {
  font-size: 12px;
  color: var(--ink-3);
  font-style: italic;
  line-height: 1.4;
}
.app-item-actions {
  display: flex; gap: 6px;
  margin-top: 4px;
  opacity: 0;
  transition: opacity .15s;
}
.app-item:hover .app-item-actions, .app-item.active .app-item-actions { opacity: 1; }
.app-act-btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 8px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
  cursor: pointer;
  text-transform: uppercase;
}
.app-act-btn:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.app-act-btn.star.starred { background: var(--signal); color: var(--ink); border-color: var(--signal); }
.app-act-btn.skip.skipped { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* === READER === */
.app-reader {
  background: var(--paper);
  overflow-y: auto;
  display: flex; flex-direction: column;
}
.reader-toolbar {
  padding: 14px 30px;
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0;
  background: var(--paper);
  z-index: 10;
}
.reader-btn {
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  font-family: var(--mono);
  letter-spacing: 0.04em;
  color: var(--ink-2);
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  white-space: nowrap;
}

.reader-btn:focus-visible,
.app-act-btn:focus-visible,
.btw-bar button:focus-visible {
  outline: 3px solid color-mix(in oklab, var(--signal) 70%, white);
  outline-offset: 3px;
}
.reader-btn:hover { background: var(--bg); color: var(--ink); }
.reader-body {
  padding: 50px 60px 80px;
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
}
.reader-meta {
  display: flex; gap: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--ink-3);
  margin-bottom: 20px;
}
.reader-title {
  font-family: var(--serif);
  font-size: 44px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  font-weight: 400;
  overflow-wrap: break-word;
  hyphens: auto;
}
.reader-title em { font-style: italic; color: var(--trust); }
.reader-source {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-2);
  margin-bottom: 32px;
}
.reader-prose {
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-2);
}
.reader-prose h2 {
  font-family: var(--serif); font-weight: 400;
  font-size: 28px; line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 32px 0 12px;
  color: var(--ink);
}
.reader-prose h2 em { font-style: italic; color: var(--trust); }
.reader-prose p { margin: 0 0 16px; }
.reader-prose code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--ink);
}
.reader-prose pre {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--ink);
  color: var(--paper);
  padding: 20px 22px;
  border-radius: 10px;
  overflow-x: auto;
  line-height: 1.65;
  margin: 20px 0;
}
.reader-prose pre .key { color: #D8A0FF; }
.reader-prose pre .str { color: #E8C04A; }
.reader-prose pre .num { color: #91C92F; }
.reader-prose blockquote {
  margin: 24px 0;
  padding: 0 0 0 20px;
  border-left: 3px solid var(--signal);
  font-family: var(--serif);
  font-size: 20px; line-height: 1.4;
  font-style: italic;
  color: var(--ink);
}

/* === BTW BAR === */
.btw-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: 540px;
  max-width: calc(100vw - 48px);
  background: var(--ink);
  color: var(--paper);
  border-radius: 16px;
  padding: 8px 8px 8px 18px;
  display: flex; align-items: center; gap: 10px;
  box-shadow: 0 20px 50px -20px rgba(17,16,14,0.4);
  z-index: 50;
  font-family: var(--mono);
  font-size: 13px;
}
.btw-bar .prefix { color: var(--signal); flex-shrink: 0; }
.btw-bar input {
  flex: 1;
  background: transparent;
  border: 0;
  color: var(--paper);
  font-family: var(--mono);
  font-size: 13px;
  outline: none;
}
.btw-bar input::placeholder { color: color-mix(in oklab, var(--paper) 40%, transparent); }
.btw-bar button {
  background: var(--signal);
  color: var(--ink);
  border: 0;
  border-radius: 10px;
  padding: 8px 14px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.btw-toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 18px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
  box-shadow: 0 20px 50px -20px rgba(17,16,14,0.3);
  z-index: 60;
  display: flex; flex-direction: column; gap: 6px;
  min-width: 320px;
  animation: toast-in .3s ease;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@media (max-width: 1100px) {
  .app-shell { grid-template-columns: 220px 320px 1fr; }
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 100vh;
    overflow: visible;
  }
  .app-sidebar,
  .app-list,
  .app-reader {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    max-height: none;
  }
  .app-sidebar { max-height: 280px; }
  .app-list { max-height: 420px; }
  .reader-toolbar { position: static; gap: 12px; flex-wrap: wrap; }
  .btw-bar {
    position: static;
    transform: none;
    width: auto;
    margin: 18px;
    flex-wrap: wrap;
  }
  .btw-bar input { min-width: min(100%, 260px); }
  .btw-toast { bottom: 20px; min-width: min(320px, calc(100vw - 32px)); }
}

@media (max-width: 560px) {
  .app-sidebar-head,
  .app-list-head,
  .reader-toolbar,
  .reader-body {
    padding-left: 18px;
    padding-right: 18px;
  }
  .app-list-sub,
  .app-item-meta {
    flex-wrap: wrap;
  }
  .reader-title {
    font-size: clamp(32px, 12vw, 46px);
    letter-spacing: 0;
  }
}