/* 04-columns-rail.css: Two columns, piece and stanza numbers, button rows, left menu
   Part 5 of 11 of the site styles. index.html loads the parts in number order, and the order
   matters: a later rule for the same element refines an earlier one (see css/README.md).
   Wide-screen layouts: two stanza columns, both languages side by side, the left contents menu.
   Sections:
   - Two columns on wide screens (data-cols="2"); the script assigns each stanza its grid row
   - Piece numbers (.no) and stanza numbers (.sn, added by the script)
   - Print: page border, contents on its own page, two-column flow (final rules)
   - Share / QR / Print use the Latin font
   - Button rows (final rules), styled like the top menu: home page (#shr: App, Share, QR, Print, Help) and the …
   - Both languages on wide screens: each Marathi line with its transliteration beside it
   - Left menu (contents) on screens 1100px and wider
   - Reading progress line under the top bar
   - Dhrupad markers (↻ ध्रुपद) as small pills
*/

/* ==== Two columns on wide screens (data-cols="2"); the script assigns each stanza its grid row ==== */
[data-cols="2"] .wrap {
  max-width: 76rem;
}
[data-cols="2"] .bar {
  padding-inline: max(16px, calc((var(--vw, 100vw) - 76rem) / 2));
}
[data-cols="2"] .ash header,
[data-cols="2"] .rftop {
  max-width: 46rem;
  margin-left: auto;
  margin-right: auto;
}
@media screen {
  [data-cols="2"] .items {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 64px;
    align-items: start;
  }
  [data-cols="2"] .rftop .verse {
    width: fit-content;
    margin-inline: auto;
    padding-right: 1em;
  }
  [data-cols="2"] .pn {
    margin-inline: auto;
  }
}

[data-cols="2"] #home {
  max-width: 46rem;
  margin: 0 auto;
}
/* stanza columns drawn closer together in pieces of short lines (--pull, set by the script: pull()) */
@media screen {
  /* the translate property, not transform, so the fade-in on scroll (which animates transform) leaves it be */
  [data-cols="2"] .items > .c1 {
    translate: var(--pull, 0px) 0;
  }
  [data-cols="2"] .items > .c2 {
    translate: calc(-1 * var(--pull, 0px)) 0;
  }
}
@media print {
  [data-cols="2"] .wrap {
    max-width: none;
  }
  [data-cols="2"] .items {
    column-count: 1;
    column-rule: none;
  }
  [data-cols="2"] #home,
  [data-cols="2"] .ash header,
  [data-cols="2"] .rftop {
    max-width: none;
  }
}

/* ==== Piece numbers (.no) and stanza numbers (.sn, added by the script) ==== */
.no {
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  font-weight: 600;
  margin-right: 0.15em;
}
.no .ne,
[data-lang="en"] .no .nm,
[data-lang="both"] .no .nm {
  display: none;
}
[data-lang="en"] .no .ne,
[data-lang="both"] .no .ne {
  display: inline;
}
.sn {
  white-space: nowrap;
  color: var(--muted);
  font-weight: 400;
  font-size: 0.85em;
}
@media print {
  /* final dhrupad styling in print: one gold rule beside the dhrupad text */
  #pv .pvref {
    border: 0 !important;
    padding: 0 !important;
    border-radius: 0 !important;
  }
  #pv .pvside tr.pvrefrow td.pvm {
    box-shadow: none !important;
    border-left: 2pt solid var(--accent) !important;
    padding-left: 10pt;
  }
}
@media print {
  /* ==== Print: page border, contents on its own page, two-column flow (final rules) ==== */
  /* light border on every page: a fixed box repeats on each printed page (around the page area);
     the print view keeps a little space inside it on every page (box-decoration-break: clone).
     Only where the browser can do both, so text never touches the line. */
  @supports (box-decoration-break: clone) {
    :root[data-print] #pv {
      box-decoration-break: clone;
      padding: 6mm 7mm;
    }
    :root[data-print] #pv::before {
      content: "";
      position: fixed;
      inset: 0;
      border: 0.75pt solid #c9ab7f;
      border-radius: 2mm;
      pointer-events: none;
    }
  }
  #pv .pvtoc {
    border-bottom: 0;
    margin-bottom: 0;
    padding-bottom: 0;
    break-after: page;
    page-break-after: always;
  }
  /* contents in two columns read top to bottom; a grid, because Safari ignores CSS columns in print */
  #pv .pvtoc ol {
    columns: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-auto-flow: column;
    column-gap: 28pt;
  }
  /* page number at the right of each contents line */
  #pv .pvtoc li[data-sid] {
    position: relative;
    padding-right: 26pt;
  }
  #pv .pvtoc .pgn {
    position: absolute;
    right: 2pt;
    top: 4pt;
    font: 400 12pt/1.35 var(--lat);
    color: #555;
  }
  #pv[data-lang="mr"] .pvtoc .pgn {
    font-family: var(--head);
  }
  /* two columns: stanzas run down the left column to the foot of the page, then down the right */
  #pv .pvhd {
    break-after: avoid;
    page-break-after: avoid;
  }
  #pv .pvc {
    columns: 2;
    column-gap: 16pt;
    column-rule: 0.5pt solid #bbb;
    column-fill: balance;
    margin: 0 0 6pt;
  }
  /* a page's part of a two-column piece, before its last part (js/features/print.js cuts the flow at each page) */
  #pv .pvc.pvcf {
    column-fill: auto;
  }
  #pv .pvc .pvk {
    break-inside: avoid;
    page-break-inside: avoid;
    -webkit-column-break-inside: avoid;
  }
  #pv .pvc .verse {
    text-align: center;
  }
  /* each piece starts at the top of a new page: a forced break is the one page rule Chrome and
     Safari both follow, so every print breaks the same way and the contents numbers stay right */
  #pv .pvs + .pvs {
    break-before: page;
    page-break-before: always;
  }
  #pv .pvs:last-child {
    margin-bottom: 0;
  }
  /* a page break the print plan forces (see paginate) */
  #pv .pvbr {
    display: block;
    height: 0;
    margin: 0;
    break-before: page;
    page-break-before: always;
  }
  /* nothing after the last piece, so Safari adds no empty page at the end */
  .wk[data-print] body {
    margin: 0;
  }
  /* upright unless the reader chose Sideways in the Print pop-up: js/features/print.js then adds
     "@page { size: landscape }" after this (the contents numbers are worked out for the pages chosen) */
  @page {
    size: portrait;
  }
}

/* ==== Share / QR / Print use the Latin font ==== */
#shr button,
#prm .qrt,
#prm .prn,
#prm button {
  font-family: var(--lat);
}
#shr {
  align-items: stretch;
}
#shr button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin: 0;
}
#shr button svg {
  margin-right: 8px !important;
  vertical-align: 0 !important;
}

/* ==== Button rows (final rules), styled like the top menu: home page (#shr: App, Share, QR, Print, Help)
   and the bottom of Settings (#shr2: App, Help) ==== */
#shr {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin: 18px 0 6px;
}
#shr button {
  flex: 1 1 0;
  min-width: 0;
  max-width: 128px;
  height: 44px;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin: 0;
  padding: 0 2px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  font: 500 13.5px/1 var(--lat);
  text-decoration: none;
  white-space: nowrap;
}
#shr button[hidden] {
  display: none;
}
#shr button .mr {
  font-family: var(--body);
}
#shr button svg {
  flex: none;
  width: 18px;
  height: 18px;
  margin: 0 !important;
}
/* Version number beside the Settings title, so we can tell which copy a phone is showing */
/* Narrow phones: icons only. The words are clipped out of sight rather than removed (display:none), because
   they are each button's name for screen readers and voice control (WCAG 2.5.3 Label in Name) */
@media (max-width: 379px) {
  #shr button > span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }
}

/* ==== Both languages on wide screens: each Marathi line with its transliteration beside it ==== */
@media screen {
  [data-cols="2"] [data-lang="both"] .items {
    display: block;
  }
  [data-cols="2"] [data-lang="both"] .verse {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    column-gap: 40px;
    align-items: baseline;
  }
  [data-cols="2"] [data-lang="both"] .verse > .mr,
  [data-cols="2"] [data-lang="both"] .verse > .en {
    display: contents;
  }
  [data-cols="2"] [data-lang="both"] .verse > .mr > p {
    grid-column: 1;
    text-align: right;
  }
  [data-cols="2"] [data-lang="both"] .verse > .en {
    font-size: 0.8em;
    line-height: 1.5;
  }
  [data-cols="2"] [data-lang="both"] .verse > .en > p {
    grid-column: 2;
    text-align: left;
    font-size: 1em;
    margin: 0;
  }
  [data-cols="2"] [data-lang="both"] .rftop {
    max-width: none;
  }
  [data-cols="2"] [data-lang="both"] .rftop .verse {
    width: auto;
  }
  [data-cols="2"] [data-lang="both"] .rftop .lab {
    text-align: center;
  }
  [data-cols="2"] [data-lang="both"] .items .item,
  [data-cols="2"] [data-lang="both"] .items .rmk {
    grid-row: auto !important;
    grid-column: auto !important;
  }
}


/* ==== Left menu (contents) on screens 1100px and wider ==== */
#rail {
  display: none;
}
:root {
  --ww: 46rem;
}
[data-cols="2"] {
  --ww: 76rem;
}
/* With the side menu (iPad landscape, desktop) the page sits right beside the menu and uses its whole width, up to 60rem */
[data-rail="1"] {
  --ww: 60rem;
}
@media screen and (min-width: 1100px) {
  [data-rail="1"] {
    --W: min(var(--ww), calc(var(--vw, 100vw) - 340px));
    --L: max(24px, calc((var(--vw, 100vw) - 260px - var(--W)) / 2));
  }
  [data-rail="1"] .wrap {
    max-width: var(--W);
    margin-left: calc(var(--L) + 260px);
    margin-right: 0;
  }
  [data-rail="1"] .bar {
    padding-left: calc(var(--L) - 8px);
    padding-right: max(16px, calc(var(--vw, 100vw) - var(--L) - 260px - var(--W) - 8px));
  }
  [data-rail="1"] #rail {
    display: block;
    position: fixed;
    z-index: 4;
    left: var(--L);
    top: 72px;
    width: 220px;
    max-height: calc(100vh - 96px);
    overflow: auto;
    padding: 4px 6px 12px 0;
    scrollbar-width: thin;
  }
  #rail .rg,
  #rail a.rg {
    display: block;
    font: 600 13px/1.3 var(--head);
    color: var(--accent);
    margin: 14px 0 4px;
    padding: 0 8px 4px;
    border: 0;
    border-bottom: 1px solid var(--rule);
    border-radius: 0;
  }
  #rail a.rg {
    padding-top: 6px;
    margin-top: 8px;
  }
  @media (hover: hover) {
    #rail a.rg:hover {
      background: var(--surface);
    }
  }
  #rail[data-lang="both"] a.rg .en {
    display: none;
  }
  #rail .rg:first-child {
    margin-top: 0;
  }
  #rail .rg .en {
    display: none;
  }
  #rail[data-lang="en"] .rg .en {
    display: inline;
  }
  #rail ul {
    list-style: none;
    margin: 0;
    padding: 0;
  }
  #rail a {
    display: block;
    padding: 6px 8px 6px 10px;
    border-left: 3px solid transparent;
    border-radius: 0 8px 8px 0;
    color: var(--ink);
    text-decoration: none;
    font: 400 15px/1.35 var(--head);
  }
  #rail[data-lang="en"] a {
    font: 500 14px/1.35 var(--lat);
  }
  #rail a .en {
    display: none;
  }
  #rail[data-lang="en"] a .en {
    display: inline;
  }
  #rail[data-lang="en"] a .mr {
    display: none;
  }
  #rail[data-lang="both"] a .en {
    display: block;
    font: 400 11.5px/1.3 var(--lat);
    color: var(--muted);
  }
  #rail a .no {
    color: var(--muted);
    font-weight: 400;
    margin-right: 0.3em;
  }
  @media (hover: hover) {
    #rail a:hover {
      background: var(--surface);
    }
  }
  #rail a.on {
    border-left-color: var(--accent);
    background: var(--hdr);
    color: var(--accent);
  }
  #rail a.on .no {
    color: var(--accent);
  }
}

/* ==== Reading progress line under the top bar ==== */
.bar {
  position: sticky;
}
#prog {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--accent);
  opacity: 0.75;
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

/* ==== Dhrupad markers (↻ ध्रुपद) as small pills ==== */
@media screen {
  [data-ref="1"] .rmk {
    display: block;
    width: fit-content;
    margin: 0.15em auto 0.8em;
    padding: 1px 12px 2px;
    border-radius: 999px;
    background: var(--hdr);
    border: 1px solid var(--hdrl);
    color: var(--accent);
    font: 600 0.58em/1.6 var(--body);
    letter-spacing: 0.02em;
  }
  [data-cols="2"] .items > .rmk {
    justify-self: center;
  }
}