/* EM DocBox polish-suite v2 — additive CSS layer for all UX enhancements.
   Safe-by-construction:
   • Every fixed-position element is gated on body.eb-with-X (set by JS) so it cannot
     appear unless padding has been reserved.
   • Landing page never gets overlay elements (handled by JS ON_LANDING guard).
   • Reduced-motion honored throughout.
   • Light theme + dark theme covered. */

:root {
  --eb-z-bottom-nav: 90;
  --eb-z-fab: 91;
  --eb-z-disclaimer: 92;
  --eb-z-ctx-menu: 95;
  --eb-z-cmdk: 100;
  --eb-z-kbd-help: 101;
  --eb-z-ptr: 80;
  --eb-accent: #ff4757;
  --eb-accent-soft: rgba(255,71,87,.16);
  --eb-card-bg: rgba(13,17,23,.96);
  --eb-card-border: rgba(255,255,255,.08);
  --eb-text: rgba(255,255,255,.92);
  --eb-text-soft: rgba(255,255,255,.62);
  --eb-text-dim: rgba(255,255,255,.42);
}
[data-theme="light"] {
  --eb-card-bg: rgba(255,255,255,.98);
  --eb-card-border: rgba(0,0,0,.1);
  --eb-text: #0f172a;
  --eb-text-soft: #475569;
  --eb-text-dim: #94a3b8;
  --eb-accent: #dc2626;
  --eb-accent-soft: rgba(220,38,38,.1);
}

/* ─────────────────────────────────────────────────────────────────
   1. KEYBOARD SHORTCUT OVERLAY (?)
   ───────────────────────────────────────────────────────────────── */
.eb-kbd-overlay {
  position: fixed; inset: 0; z-index: var(--eb-z-kbd-help);
  background: rgba(0,0,0,.6); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  display: none; align-items: center; justify-content: center; padding: 20px;
  font-family: 'Inter', system-ui, sans-serif;
}
.eb-kbd-overlay.show { display: flex; }
.eb-kbd-card {
  background: var(--eb-card-bg); color: var(--eb-text);
  border: 1px solid var(--eb-card-border); border-radius: 16px;
  padding: 28px 30px; max-width: 540px; width: 100%;
  box-shadow: 0 28px 80px rgba(0,0,0,.5);
  max-height: 85vh; overflow-y: auto;
}
.eb-kbd-title { font-size: 18px; font-weight: 600; letter-spacing: -.01em; margin: 0 0 6px; }
.eb-kbd-sub { font-size: 13px; color: var(--eb-text-soft); margin: 0 0 20px; }
.eb-kbd-section { margin-bottom: 18px; }
.eb-kbd-section h4 {
  font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em;
  color: var(--eb-text-dim); margin: 0 0 10px;
}
.eb-kbd-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 7px 0; font-size: 13px;
}
.eb-kbd-label { color: var(--eb-text-soft); }
.eb-kbd-keys { display: inline-flex; gap: 4px; }
.eb-kbd {
  display: inline-block; min-width: 22px; padding: 2px 7px;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12);
  border-radius: 5px; font-family: 'IBM Plex Mono', monospace; font-size: 11.5px;
  color: var(--eb-text); text-align: center;
}
[data-theme="light"] .eb-kbd { background: #f1f5f9; border-color: #e2e8f0; color: #0f172a; }

/* ─────────────────────────────────────────────────────────────────
   2. COMMAND PALETTE (Cmd/Ctrl + K)
   ───────────────────────────────────────────────────────────────── */
.eb-cmdk-overlay {
  position: fixed; inset: 0; z-index: var(--eb-z-cmdk);
  background: rgba(0,0,0,.6); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  display: none; align-items: flex-start; justify-content: center;
  padding: 10vh 16px 16px;
  font-family: 'Inter', system-ui, sans-serif;
}
.eb-cmdk-overlay.show { display: flex; }
.eb-cmdk-card {
  background: var(--eb-card-bg); color: var(--eb-text);
  border: 1px solid var(--eb-card-border); border-radius: 14px;
  width: 100%; max-width: 600px; max-height: 70vh; overflow: hidden;
  display: flex; flex-direction: column;
  box-shadow: 0 28px 80px rgba(0,0,0,.5);
}
.eb-cmdk-input-wrap {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; border-bottom: 1px solid var(--eb-card-border);
}
.eb-cmdk-input-wrap svg { color: var(--eb-text-dim); flex-shrink: 0; }
.eb-cmdk-input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--eb-text); font-family: inherit; font-size: 15px;
  padding: 4px 0; min-width: 0;
}
.eb-cmdk-input::placeholder { color: var(--eb-text-dim); }
.eb-cmdk-mic {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; padding: 0;
  background: rgba(255,255,255,.06); border: 1px solid var(--eb-card-border);
  border-radius: 8px; color: var(--eb-text-soft); cursor: pointer;
  transition: background .15s, color .15s;
  -webkit-tap-highlight-color: transparent;
}
.eb-cmdk-mic:hover { background: rgba(255,255,255,.1); color: var(--eb-text); }
.eb-cmdk-mic.listening {
  background: var(--eb-accent-soft); color: var(--eb-accent);
  animation: eb-pulse 1.4s ease-in-out infinite;
}
@keyframes eb-pulse { 0%,100% { opacity: 1 } 50% { opacity: .55 } }
.eb-cmdk-results { flex: 1; overflow-y: auto; padding: 6px 0; }
.eb-cmdk-group { padding: 4px 0; }
.eb-cmdk-glabel {
  font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em;
  color: var(--eb-text-dim); padding: 8px 16px 4px;
}
.eb-cmdk-item {
  display: flex; align-items: center; gap: 11px; padding: 10px 16px;
  cursor: pointer; text-decoration: none; color: var(--eb-text);
  border-left: 2px solid transparent; transition: background .12s;
}
.eb-cmdk-item:hover, .eb-cmdk-item.eb-kb-focus {
  background: rgba(255,255,255,.05); border-left-color: var(--eb-accent);
}
.eb-cmdk-emoji { font-size: 20px; flex-shrink: 0; width: 28px; text-align: center; }
.eb-cmdk-body { flex: 1; min-width: 0; }
.eb-cmdk-title { font-size: 14px; font-weight: 500; }
.eb-cmdk-sub { font-size: 12px; color: var(--eb-text-soft); margin-top: 2px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.eb-cmdk-tag {
  font-size: 10px; padding: 3px 7px; border-radius: 4px;
  background: rgba(255,255,255,.06); color: var(--eb-text-soft);
  font-family: 'IBM Plex Mono', monospace; flex-shrink: 0;
}
.eb-cmdk-empty {
  text-align: center; padding: 28px 16px; color: var(--eb-text-soft); font-size: 13px;
}
.eb-cmdk-footer {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 14px; border-top: 1px solid var(--eb-card-border);
  font-size: 11px; color: var(--eb-text-dim);
}
.eb-cmdk-footer kbd {
  display: inline-block; padding: 1px 5px; background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.1); border-radius: 3px;
  font-family: inherit; font-size: 10px;
}
[data-theme="light"] .eb-cmdk-footer kbd { background: #f1f5f9; border-color: #e2e8f0; }
.eb-sug-chips { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-top: 12px; }
.eb-sug-chip {
  padding: 5px 11px; background: var(--eb-accent-soft); color: var(--eb-accent);
  border-radius: 999px; font-size: 12px; cursor: pointer; transition: background .12s;
}
.eb-sug-chip:hover { background: var(--eb-accent); color: #fff; }

/* ─────────────────────────────────────────────────────────────────
   3. PERSISTENT NAV SEARCH BUTTON
   ───────────────────────────────────────────────────────────────── */
.eb-nav-search-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 12px 7px 10px; margin-right: 10px;
  background: rgba(255,255,255,.05); border: 1px solid var(--eb-card-border);
  border-radius: 8px; color: var(--eb-text-soft); cursor: pointer;
  font-family: 'Inter', sans-serif; font-size: 12.5px; font-weight: 500;
  transition: background .15s, color .15s, border-color .15s;
}
.eb-nav-search-btn:hover { background: rgba(255,255,255,.08); color: var(--eb-text); border-color: rgba(255,255,255,.16); }
.eb-nav-search-kbd {
  padding: 1px 5px; background: rgba(255,255,255,.08); border-radius: 3px;
  font-family: 'IBM Plex Mono', monospace; font-size: 10.5px; color: var(--eb-text-dim);
}
@media (max-width: 700px) { .eb-nav-search-btn span:not(.eb-nav-search-kbd) { display: none; } .eb-nav-search-kbd { display: none; } }
[data-theme="light"] .eb-nav-search-btn { background: #f8fafc; border-color: #e2e8f0; color: #475569; }

/* ─────────────────────────────────────────────────────────────────
   4. MOBILE BOTTOM NAV — gated on body.eb-with-bottom-nav
   ───────────────────────────────────────────────────────────────── */
.eb-bottom-nav {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: var(--eb-z-bottom-nav);
  background: rgba(7,10,15,.96);
  backdrop-filter: blur(20px) saturate(1.5); -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 6px 4px max(6px, env(safe-area-inset-bottom));
  justify-content: space-around; align-items: center;
  transition: transform .25s ease;
}
.eb-bottom-nav.eb-hide { transform: translateY(100%); }
.eb-bottom-nav-item {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  flex: 1; padding: 6px 4px; text-decoration: none; color: rgba(255,255,255,.55);
  font-family: 'Inter', sans-serif; font-size: 10px; font-weight: 500; letter-spacing: .01em;
  -webkit-tap-highlight-color: transparent;
  border-radius: 8px; cursor: pointer; background: none; border: none;
  transition: color .15s;
}
.eb-bottom-nav-item svg { width: 22px; height: 22px; }
.eb-bottom-nav-item.eb-active { color: var(--eb-accent); }
.eb-bottom-nav-item:active { transform: scale(.95); }
[data-theme="light"] .eb-bottom-nav { background: rgba(255,255,255,.96) !important; border-top-color: rgba(0,0,0,.08) !important; }
[data-theme="light"] .eb-bottom-nav-item { color: #64748b !important; }
@media (max-width: 768px) {
  body.eb-with-bottom-nav .eb-bottom-nav { display: flex; }
  body.eb-with-bottom-nav { padding-bottom: calc(64px + env(safe-area-inset-bottom)) !important; }
}

/* ─────────────────────────────────────────────────────────────────
   5. MIC FAB — gated on body.eb-with-mic-fab
   ───────────────────────────────────────────────────────────────── */
.eb-mic-fab {
  display: none;
  position: fixed; right: 18px; bottom: calc(86px + env(safe-area-inset-bottom));
  z-index: var(--eb-z-fab);
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, #ff4757, #e63946);
  border: none; color: #fff; cursor: pointer;
  box-shadow: 0 8px 28px rgba(255,71,87,.45), 0 0 0 1px rgba(255,255,255,.06) inset;
  -webkit-tap-highlight-color: transparent;
  align-items: center; justify-content: center;
  transition: transform .15s, box-shadow .15s;
}
.eb-mic-fab:active { transform: scale(.92); }
.eb-mic-fab svg { width: 24px; height: 24px; }
.eb-mic-fab.listening { animation: eb-pulse 1.4s ease-in-out infinite; }
@media (max-width: 768px) { body.eb-with-mic-fab .eb-mic-fab { display: flex; } }

/* ─────────────────────────────────────────────────────────────────
   6. STICKY DISCLAIMER — gated on body.eb-with-disclaimer
   ───────────────────────────────────────────────────────────────── */
.eb-disclaimer {
  display: none;
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(16px + env(safe-area-inset-bottom));
  z-index: var(--eb-z-disclaimer);
  padding: 8px 14px;
  background: rgba(15,21,32,.92); color: rgba(255,255,255,.82);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(180,83,9,.4); border-radius: 999px;
  font-family: 'Inter', sans-serif; font-size: 11px; font-weight: 500;
  letter-spacing: .01em; cursor: pointer;
  max-width: 88vw; white-space: nowrap; overflow: hidden;
  transition: max-width .25s, padding .25s;
}
body.eb-with-disclaimer .eb-disclaimer { display: inline-flex; align-items: center; gap: 8px; }
.eb-disclaimer:hover { background: rgba(15,21,32,1); }
.eb-disclaimer.eb-mini { padding: 7px 12px; max-width: 130px; }
.eb-disclaimer.eb-mini .eb-disc-text { display: none; }
.eb-disclaimer .eb-disc-dot {
  width: 6px; height: 6px; border-radius: 50%; background: #f59e0b;
  flex-shrink: 0; animation: eb-pulse 2s ease-in-out infinite;
}
.eb-disclaimer .eb-disc-tag {
  padding: 2px 6px; background: rgba(180,83,9,.25); color: #fbbf24;
  border-radius: 3px; font-family: 'IBM Plex Mono', monospace; font-size: 9.5px;
  font-weight: 600; letter-spacing: .04em;
}
@media (max-width: 700px) {
  body.eb-with-disclaimer.eb-with-bottom-nav .eb-disclaimer {
    bottom: calc(72px + env(safe-area-inset-bottom)); font-size: 10.5px;
  }
  .eb-disclaimer .eb-disc-text { display: none; }
}
[data-theme="light"] .eb-disclaimer { background: rgba(255,255,255,.94) !important; color: #1e293b !important; border-color: rgba(180,83,9,.32) !important; }

/* ─────────────────────────────────────────────────────────────────
   7. BREADCRUMB (in-flow, never overlays)
   ───────────────────────────────────────────────────────────────── */
.eb-breadcrumb {
  font-family: 'Inter', sans-serif; font-size: 11.5px;
  padding: 12px 24px 0; color: var(--eb-text-dim);
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.eb-breadcrumb a { color: var(--eb-text-soft); text-decoration: none; transition: color .12s; }
.eb-breadcrumb a:hover { color: var(--eb-accent); }
.eb-breadcrumb .eb-bc-sep { color: var(--eb-text-dim); margin: 0 2px; }
.eb-breadcrumb .eb-bc-current { color: var(--eb-text); }
@media (max-width: 768px) { .eb-breadcrumb { padding: 10px 14px 0; font-size: 10.5px; } }

/* ─────────────────────────────────────────────────────────────────
   8. CONTEXT MENU (right-click + long-press)
   ───────────────────────────────────────────────────────────────── */
.eb-ctx-menu {
  position: fixed; z-index: var(--eb-z-ctx-menu); display: none;
  min-width: 200px; background: var(--eb-card-bg); color: var(--eb-text);
  border: 1px solid var(--eb-card-border); border-radius: 10px;
  padding: 6px; box-shadow: 0 16px 48px rgba(0,0,0,.5);
  font-family: 'Inter', sans-serif; font-size: 13px;
}
.eb-ctx-menu.show { display: block; }
.eb-ctx-item {
  display: flex; align-items: center; gap: 9px; padding: 7px 10px;
  border-radius: 6px; cursor: pointer; color: var(--eb-text);
  text-decoration: none;
}
.eb-ctx-item:hover { background: rgba(255,255,255,.06); }
.eb-ctx-item svg { width: 15px; height: 15px; color: var(--eb-text-dim); }
.eb-ctx-sep { height: 1px; background: var(--eb-card-border); margin: 4px 0; }

/* ─────────────────────────────────────────────────────────────────
   9. DENSE MODE
   ───────────────────────────────────────────────────────────────── */
html[data-density="dense"] body { font-size: 14px; }
html[data-density="dense"] .card-name, html[data-density="dense"] .mhd-title,
html[data-density="dense"] .tool-title { letter-spacing: -.015em; }
html[data-density="dense"] .grid { gap: 12px !important; }
html[data-density="dense"] .card, html[data-density="dense"] .tool-card { padding: 14px 16px !important; }
html[data-density="dense"] .tool-card-inner { padding: 18px 20px !important; }
html[data-density="dense"] .tool-card.featured .tool-card-inner { padding: 22px 24px !important; }
html[data-density="dense"] .page-header { padding-top: 38px !important; padding-bottom: 18px !important; }
html[data-density="dense"] .hero { padding-top: 72px !important; padding-bottom: 48px !important; }

/* ─────────────────────────────────────────────────────────────────
   10. PULL-TO-REFRESH
   ───────────────────────────────────────────────────────────────── */
.eb-ptr-indicator {
  position: fixed; top: 0; left: 0; right: 0; z-index: var(--eb-z-ptr);
  display: flex; align-items: center; justify-content: center; gap: 9px;
  padding: 14px 0; background: rgba(7,10,15,.92);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  color: var(--eb-text-soft); font-family: 'Inter', sans-serif; font-size: 12.5px;
  transform: translateY(-100%); transition: transform .22s ease;
}
.eb-ptr-indicator.show { transform: translateY(0); }
.eb-ptr-spinner {
  width: 16px; height: 16px; border: 2px solid rgba(255,255,255,.2);
  border-top-color: var(--eb-accent); border-radius: 50%;
}
.eb-ptr-indicator.armed .eb-ptr-spinner { animation: eb-spin .8s linear infinite; }
.eb-ptr-indicator.refreshing .eb-ptr-spinner { animation: eb-spin .8s linear infinite; }
@keyframes eb-spin { to { transform: rotate(360deg); } }

/* ─────────────────────────────────────────────────────────────────
   11. EDITORIAL / TRUST CHROME — review badge, source pill, methodology link
   ───────────────────────────────────────────────────────────────── */
.eb-review-strip {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  padding: 10px 20px; margin: 12px 24px 0;
  background: rgba(255,255,255,.025); border: 1px solid var(--eb-card-border);
  border-radius: 10px; font-family: 'Inter', sans-serif; font-size: 11.5px;
  color: var(--eb-text-soft);
}
.eb-review-strip strong { color: var(--eb-text); font-weight: 600; }
.eb-review-strip a { color: var(--eb-text); text-decoration: underline; text-decoration-color: var(--eb-text-dim); }
.eb-review-strip a:hover { text-decoration-color: var(--eb-accent); }
.eb-review-strip .eb-rev-dot { width: 6px; height: 6px; border-radius: 50%; background: #10b981; }
.eb-review-pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 8px; border-radius: 999px;
  background: rgba(16,185,129,.12); color: #34d399;
  font-family: 'IBM Plex Mono', monospace; font-size: 10.5px; font-weight: 500;
}
[data-theme="light"] .eb-review-pill { background: rgba(16,185,129,.14); color: #047857; }
[data-theme="light"] .eb-review-strip { background: #f8fafc; }
@media (max-width: 700px) { .eb-review-strip { margin: 10px 14px 0; font-size: 10.5px; padding: 9px 14px; } }

/* ─────────────────────────────────────────────────────────────────
   12. PRINT STYLESHEET — algorithm cards for laminated badge cards
   ───────────────────────────────────────────────────────────────── */
@media print {
  @page { size: 4.25in 5.5in; margin: 0.3in; }
  body {
    background: #fff !important; color: #000 !important;
    font-family: 'Inter', sans-serif; font-size: 9.5pt; line-height: 1.35;
  }
  nav, footer, .footer-row, .controls-bar, .filter-bar, .filter-drawer,
  .eb-breadcrumb, .eb-bottom-nav, .eb-mic-fab, .eb-disclaimer,
  .eb-cmdk-overlay, .eb-kbd-overlay, .eb-ctx-menu, .eb-ptr-indicator,
  .modal-close, .mclose, .gsearch-shell, .gsearch-wrap, #overlay,
  .stats-row, button:not(.print-show), .nav, .tool-arrow {
    display: none !important;
  }
  .card, .tool-card, .sys-panel, .mhd, .mbody, .algo-step {
    page-break-inside: avoid; box-shadow: none !important;
    border: 1px solid #999 !important; background: #fff !important;
    color: #000 !important;
  }
  .card-name, .mhd-title, .tool-title {
    font-size: 11pt !important; color: #000 !important;
  }
  a { color: #000 !important; text-decoration: none !important; }
  .pill, .tag, .ctx-chip {
    background: #fff !important; color: #000 !important;
    border: 1px solid #999 !important;
  }
}

/* ─────────────────────────────────────────────────────────────────
   13. UTIL: reduced-motion + reduced-data
   ───────────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .eb-cmdk-overlay, .eb-kbd-overlay, .eb-bottom-nav, .eb-disclaimer,
  .eb-mic-fab, .eb-ptr-indicator { transition: none !important; }
  .eb-cmdk-mic.listening, .eb-disclaimer .eb-disc-dot, .eb-mic-fab.listening,
  .eb-ptr-indicator .eb-ptr-spinner { animation: none !important; }
}
@media (prefers-reduced-data: reduce) {
  /* Hint to lazy-load: JS reads this and skips non-critical fetches */
}

/* iOS Safari auto-zooms when a focused input is <16px. Force every text/search
   input to ≥16px on mobile across ALL pages — kills the jarring zoom-on-tap. */
@media (max-width: 768px) {
  input[type="text"], input[type="search"], input[type="number"], input:not([type]), textarea {
    font-size: 16px !important;
  }
}

/* ─────────────────────────────────────────────────────────────────
   14. TABLET 2-PANE SPLIT (opt-in via data-tablet-split on <body>)
   ───────────────────────────────────────────────────────────────── */
@media (min-width: 820px) and (max-width: 1180px) {
  body[data-tablet-split="1"] .main { display: grid; grid-template-columns: 360px 1fr; gap: 18px; padding: 0 18px; }
  body[data-tablet-split="1"] .grid { display: block; }
  body[data-tablet-split="1"] .card { margin-bottom: 10px; }
}