/* ==========================================================================
   Yoga Vasishtha — reading surface
   Three modes share one DOM; the mode swaps tokens, type and structure.
     patha   ivory / ink / vermilion rubric   the printed edition   (default)
     ekanta  near-black / bone / gold          one verse at a time
     sutra   cool white / indigo               parallel registers
   ========================================================================== */

/* ---- Pāṭha, light: the base palette ---- */
:root {
  --bg:      #f5f3eb;
  --bg-2:    #efece1;
  --card:    #faf9f3;
  --fg:      #1d1c18;
  --fg-2:    #4e4a3e;
  --fg-3:    #8d8878;
  --line:    #ddd8c8;
  --line-2:  #e8e4d7;
  --accent:  #b32d1f;
  --accent-2:#8f2418;
  --sel:     #f0e2c8;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans:  ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --deva:  "Kohinoor Devanagari", "Devanagari Sangam MN", "Noto Serif Devanagari", "Noto Sans Devanagari", "Nirmala UI", var(--serif);
  --mono:  ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --body: var(--serif);
  --measure: 34rem;
  --wrap: 54rem;
  --pad: clamp(1rem, 4vw, 2.5rem);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171613; --bg-2: #1d1c18; --card: #201f1a; --fg: #eae5d8;
    --fg-2: #b6b0a0; --fg-3: #857f70; --line: #34322b; --line-2: #2a2823;
    --accent: #e2705f; --accent-2: #f08a78; --sel: #3d3226;
  }
}
:root[data-theme="dark"] {
  --bg: #171613; --bg-2: #1d1c18; --card: #201f1a; --fg: #eae5d8;
  --fg-2: #b6b0a0; --fg-3: #857f70; --line: #34322b; --line-2: #2a2823;
  --accent: #e2705f; --accent-2: #f08a78; --sel: #3d3226;
}

/* ---- Sūtra ---- */
body[data-mode="sutra"] {
  --bg: #fbfbfc; --bg-2: #f4f5f7; --card: #ffffff; --fg: #14161c;
  --fg-2: #4a4e5c; --fg-3: #8b8fa0; --line: #e2e4ea; --line-2: #eef0f4;
  --accent: #3b41d9; --accent-2: #2c31b8; --sel: #dfe1fb;
  --body: var(--sans);
  --wrap: 62rem;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) body[data-mode="sutra"] {
    --bg: #0f1115; --bg-2: #161920; --card: #171a21; --fg: #e7e9ee;
    --fg-2: #a9adbb; --fg-3: #7b8091; --line: #272b35; --line-2: #1f232b;
    --accent: #8b91ff; --accent-2: #a5aaff; --sel: #23264a;
  }
}
:root[data-theme="dark"] body[data-mode="sutra"] {
  --bg: #0f1115; --bg-2: #161920; --card: #171a21; --fg: #e7e9ee;
  --fg-2: #a9adbb; --fg-3: #7b8091; --line: #272b35; --line-2: #1f232b;
  --accent: #8b91ff; --accent-2: #a5aaff; --sel: #23264a;
}

/* ---- Ekānta: committed to the dark; that is its character ---- */
body[data-mode="ekanta"] {
  --bg: #0e0f12; --bg-2: #131418; --card: #131418; --fg: #e8e2d6;
  --fg-2: #b3ad9f; --fg-3: #6b675e; --line: #23241f; --line-2: #1b1c19;
  --accent: #c9a227; --accent-2: #ddb840; --sel: #2e2a1c;
  --body: var(--serif);
  --wrap: 40rem;
}

/* ========================= base ========================= */
* { box-sizing: border-box; }
/* a class that sets display would otherwise beat the UA rule for [hidden] */
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}
::selection { background: var(--sel); }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 1px; }

.skip { position: absolute; left: -9999px; top: 0; background: var(--card); color: var(--fg); padding: .6rem 1rem; z-index: 60; }
.skip:focus { left: .5rem; top: .5rem; }

.lab, .reg-lab {
  font-family: var(--mono); font-size: .6rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--fg-3);
}

/* ========================= header ========================= */
.top {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.top-in {
  max-width: var(--wrap); margin: 0 auto; padding: .55rem var(--pad);
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
}
.brand { display: flex; align-items: baseline; gap: .5rem; text-decoration: none; color: inherit; margin-right: auto; }
.brand-dv { font-family: var(--deva); font-size: 1.05rem; color: var(--accent); line-height: 1.4; }
.brand-en { font-size: .82rem; letter-spacing: .01em; color: var(--fg-3); }
@media (max-width: 560px) { .brand-en { display: none; } }

.top-tools { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }

.find { position: relative; display: flex; }
.find input {
  font: inherit; font-size: .84rem; font-family: var(--sans);
  padding: .34rem 1.7rem .34rem .6rem; width: min(15rem, 42vw);
  background: var(--card); color: var(--fg);
  border: 1px solid var(--line); border-radius: 2px;
}
.find input::placeholder { color: var(--fg-3); }
.find button {
  position: absolute; right: .1rem; top: 50%; transform: translateY(-50%);
  background: none; border: 0; color: var(--fg-3); cursor: pointer;
  font-size: 1.1rem; line-height: 1; padding: .1rem .35rem;
}

.modes { display: flex; border: 1px solid var(--line); border-radius: 2px; overflow: hidden; }
.mode {
  font-family: var(--mono); font-size: .6rem; letter-spacing: .1em; text-transform: uppercase;
  padding: .42rem .55rem; background: transparent; color: var(--fg-3);
  border: 0; border-right: 1px solid var(--line); cursor: pointer;
}
.mode:last-child { border-right: 0; }
.mode:hover { color: var(--fg); }
.mode[aria-checked="true"] { background: var(--accent); color: #fff; }
body[data-mode="ekanta"] .mode[aria-checked="true"] { color: #1a1608; }

.icon {
  background: var(--card); border: 1px solid var(--line); border-radius: 2px;
  color: var(--fg-2); cursor: pointer; font-size: .92rem; padding: .3rem .5rem; line-height: 1.2;
}
.icon:hover { color: var(--fg); }

/* register chips (Sūtra) */
.registers {
  max-width: var(--wrap); margin: 0 auto; padding: 0 var(--pad) .55rem;
  display: flex; align-items: center; gap: .5rem; flex-wrap: wrap;
}
.chips { display: flex; gap: .3rem; flex-wrap: wrap; align-items: center; }
.chip {
  /* fixed box so Devanagari and Latin labels match: the scripts have very
     different natural line heights, which otherwise makes the row ragged */
  display: inline-flex; align-items: center; justify-content: center;
  height: 1.6rem; padding: 0 .5rem; line-height: 1;
  font-family: var(--mono); font-size: .58rem; letter-spacing: .09em; text-transform: uppercase;
  border: 1px solid var(--line); background: transparent;
  color: var(--fg-3); cursor: pointer; border-radius: 2px;
}
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip.dv { font-family: var(--deva); font-size: .68rem; margin: 0; letter-spacing: 0; text-transform: none; }

/* ========================= breadcrumbs ========================= */
.crumbs {
  max-width: var(--wrap); margin: 0 auto; padding: .7rem var(--pad) 0;
  display: flex; align-items: center; gap: .45rem; flex-wrap: wrap;
  font-family: var(--mono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: var(--fg-3);
}
.crumbs a { color: var(--fg-3); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }
.crumbs .sep { opacity: .5; }
.crumbs .here { color: var(--fg); }

/* ========================= layout ========================= */
main { max-width: var(--wrap); margin: 0 auto; padding: 1.4rem var(--pad) 5rem; }

h1.page { font-size: clamp(1.6rem, 4.4vw, 2.35rem); line-height: 1.12; margin: .3rem 0 .2rem; letter-spacing: -.015em; text-wrap: balance; font-weight: 600; }
h1.page .dv { font-family: var(--deva); color: var(--accent); font-weight: 400; }
p.dek { color: var(--fg-2); max-width: 48ch; margin: .25rem 0 0; }

/* ---- home ---- */
.books { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 1.8rem; }
.book {
  display: grid; grid-template-columns: 2.6rem 1fr auto; gap: 0 1rem; align-items: baseline;
  background: var(--bg); padding: .95rem 1.1rem; text-decoration: none; color: inherit;
}
.book:hover { background: var(--bg-2); }
.book .n { font-family: var(--mono); font-size: .8rem; color: var(--accent); }
.book .nm { font-size: 1.06rem; }
.book .nm .dv { font-family: var(--deva); color: var(--fg-3); font-size: .92em; margin-left: .5rem; }
.book .gl { display: block; font-size: .82rem; color: var(--fg-3); margin-top: .1rem; }
.book .ct { font-family: var(--mono); font-size: .72rem; color: var(--fg-3); text-align: right; white-space: nowrap; }

/* ---- chapter grid ---- */
.chgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(4.4rem, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 1.6rem; }
.chgrid a {
  background: var(--bg); padding: .6rem .3rem; text-align: center; text-decoration: none; color: var(--fg-2);
  font-family: var(--mono); font-size: .78rem; line-height: 1.3;
}
.chgrid a:hover { background: var(--accent); color: #fff; }
.chgrid a small { display: block; font-size: .58rem; color: var(--fg-3); margin-top: .1rem; }
.chgrid a:hover small { color: rgba(255,255,255,.75); }

/* ========================= the verse ========================= */
.verses { margin-top: 1.5rem; }

article.v {
  display: grid; grid-template-columns: 2.9rem 1fr; gap: 0 1.1rem;
  padding: 1.5rem 0 1.6rem; border-bottom: 1px solid var(--line-2);
  scroll-margin-top: 5.5rem;
}
article.v:target { background: var(--bg-2); box-shadow: -.7rem 0 0 var(--bg-2), .7rem 0 0 var(--bg-2); }
@media (max-width: 620px) { article.v { grid-template-columns: 1fr; gap: .35rem; } }

.v-no { font-family: var(--mono); font-size: .76rem; color: var(--accent); padding-top: .42rem; font-variant-numeric: tabular-nums; }
.v-no a { color: inherit; text-decoration: none; }
.v-no a:hover { text-decoration: underline; }
.v-body { min-width: 0; }

.v-body .dv { font-family: var(--deva); font-size: 1.16rem; line-height: 1.86; margin: 0 0 .3rem; }
.ia { font-style: italic; color: var(--fg-2); font-size: .93rem; line-height: 1.62; margin: 0 0 1rem; }

.tr { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1.6rem; }
@media (max-width: 700px) { .tr { grid-template-columns: 1fr; gap: .8rem; } }
.tr > div { min-width: 0; }
.t h4, .a h4 { font-family: var(--mono); font-size: .56rem; letter-spacing: .14em; text-transform: uppercase; color: var(--fg-3); margin: 0 0 .25rem; font-weight: 400; }
.t h4.dvh, .a h4.dvh { font-family: var(--deva); font-size: .68rem; letter-spacing: 0; text-transform: none; }
.t p { margin: 0; font-size: .95rem; line-height: 1.64; }
.t-hi p { font-family: var(--deva); line-height: 1.84; }

.v-more {
  margin-top: .8rem; background: none; border: 0; cursor: pointer; padding: .2rem 0;
  font-family: var(--mono); font-size: .58rem; letter-spacing: .14em; text-transform: uppercase; color: var(--fg-3);
}
.v-more:hover { color: var(--accent); }
.v-more::before { content: "+ "; color: var(--accent); }
article.v.open .v-more::before { content: "– "; }

.app { display: none; margin-top: .9rem; border-left: 2px solid var(--line); padding-left: 1rem; }
article.v.open .app { display: block; }
.a + .a { margin-top: .85rem; }
.a p { margin: 0; font-size: .89rem; line-height: 1.68; color: var(--fg-2); }
.a-ch p, .a-gh p { font-family: var(--deva); line-height: 1.86; }
.a-ge p { font-style: italic; }
.a-mi p { font-style: italic; opacity: .92; }
.a-ge, .a-gh { color: var(--accent); }
.a-ge p, .a-gh p { color: var(--fg-2); }

/* pager */
.pager { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 2.2rem; padding-top: 1.1rem; border-top: 1px solid var(--line); }
.pager a, .pager span {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--fg-3); text-decoration: none;
}
.pager a:hover { color: var(--accent); }
.pager .mid { color: var(--fg-3); }

/* ========================= mode: Pāṭha ========================= */
body[data-mode="patha"] .v-body .dv { font-size: 1.18rem; }

/* ========================= mode: Sūtra ========================= */
body[data-mode="sutra"] article.v { grid-template-columns: 3.4rem 1fr; }
body[data-mode="sutra"] .app { display: block; border-left-color: var(--line-2); }
body[data-mode="sutra"] .v-more { display: none; }
body[data-mode="sutra"] .tr { grid-template-columns: 1fr; gap: .75rem; }
body[data-mode="sutra"] .v-body .dv { font-size: 1.05rem; }
body[data-mode="sutra"] .ia { color: var(--accent); }
body[data-mode="sutra"] .t p, body[data-mode="sutra"] .a p { font-size: .9rem; }

/* register switches only bite in Sūtra, where every layer is on show */
body[data-mode="sutra"].off-dv .v-body .dv,
body[data-mode="sutra"].off-ia .ia,
body[data-mode="sutra"].off-en .t-en,
body[data-mode="sutra"].off-hi .t-hi,
body[data-mode="sutra"].off-ce .a-ce,
body[data-mode="sutra"].off-ch .a-ch,
body[data-mode="sutra"].off-ge .a-ge,
body[data-mode="sutra"].off-gh .a-gh,
body[data-mode="sutra"].off-mi .a-mi { display: none; }

/* ========================= mode: Ekānta ========================= */
body[data-mode="ekanta"] main { padding-top: 2.6rem; }
body[data-mode="ekanta"] article.v { grid-template-columns: 1fr; border-bottom: 0; padding: 0; gap: 0; }
body[data-mode="ekanta"] article.v:target { background: none; box-shadow: none; }
body[data-mode="ekanta"] .v-no { color: var(--accent); margin-bottom: 2rem; padding-top: 0; }
body[data-mode="ekanta"] .v-body .dv { font-size: clamp(1.28rem, 3.4vw, 1.85rem); line-height: 1.98; margin-bottom: 1.4rem; max-width: 26ch; }
body[data-mode="ekanta"] .ia { margin-bottom: 2.4rem; max-width: 44ch; color: var(--fg-3); }
body[data-mode="ekanta"] .tr { grid-template-columns: 1fr; gap: 1.4rem; max-width: 46ch; }
body[data-mode="ekanta"] .t p { font-size: 1.08rem; line-height: 1.82; }
body[data-mode="ekanta"] .v-more { margin-top: 2.8rem; border-top: 1px solid var(--line); padding-top: .9rem; width: 100%; text-align: left; }
body[data-mode="ekanta"] .app { max-width: 46ch; }
body[data-mode="ekanta"] .verses { min-height: 58vh; }

/* ========================= search ========================= */
.hits { margin-top: 1.4rem; }
.hit {
  display: grid; grid-template-columns: 4.4rem 1fr; gap: 0 1rem;
  padding: .8rem 0; border-bottom: 1px solid var(--line-2); text-decoration: none; color: inherit;
}
@media (max-width: 560px) { .hit { grid-template-columns: 1fr; gap: .2rem; } }
.hit:hover { background: var(--bg-2); box-shadow: -.6rem 0 0 var(--bg-2), .6rem 0 0 var(--bg-2); }
.hit .ref { font-family: var(--mono); font-size: .72rem; color: var(--accent); }
.hit .sn { font-size: .92rem; line-height: 1.6; color: var(--fg-2); margin: 0; }
.hit .sn mark { background: var(--sel); color: var(--fg); padding: 0 .1em; }
.hit .sk { font-style: italic; font-size: .84rem; color: var(--fg-3); margin: .18rem 0 0; }

.note { color: var(--fg-3); font-size: .88rem; }
.note code { font-family: var(--mono); font-size: .88em; }

/* ========================= footer ========================= */
.foot { border-top: 1px solid var(--line); margin-top: 3rem; }
.foot-in { max-width: var(--wrap); margin: 0 auto; padding: 1.6rem var(--pad) 3rem; color: var(--fg-3); font-size: .84rem; }
.foot-in p { max-width: 62ch; margin: 0 0 .7rem; }
.foot-lede { color: var(--fg-2); }
.foot-meta { font-family: var(--mono); font-size: .66rem; letter-spacing: .08em; }

/* ========================= loading ========================= */
.loading { position: fixed; left: 0; top: 0; right: 0; height: 2px; z-index: 70; background: transparent; }
.loading span { display: block; height: 100%; width: 30%; background: var(--accent); animation: slide 1.1s ease-in-out infinite; }
@keyframes slide { 0% { margin-left: -30%; } 100% { margin-left: 100%; } }

.more {
  display: block; width: 100%; margin-top: 1.2rem; padding: .7rem;
  background: transparent; border: 1px solid var(--line); border-radius: 2px;
  color: var(--fg-2); cursor: pointer;
  font-family: var(--mono); font-size: .62rem; letter-spacing: .13em; text-transform: uppercase;
}
.more:hover { border-color: var(--accent); color: var(--accent); }

/* On narrow screens let search take its own row so the mode switch and the
   theme button stay together on one line instead of orphaning the button. */
@media (max-width: 620px) {
  .top-in { gap: .5rem; }
  .brand { flex: 1 1 auto; }
  .top-tools { flex: 1 1 100%; justify-content: space-between; gap: .4rem; }
  .find { order: 3; flex: 1 1 100%; }
  .find input { width: 100%; }
  .modes { order: 1; }
  #theme { order: 2; }
}

/* ---- provenance: said once per view, not once per verse ---- */
.prov {
  margin: .9rem 0 0; padding-left: .85rem; position: relative;
  font-family: var(--sans); font-size: .78rem;
  color: var(--fg-3); line-height: 1.55; max-width: 62ch;
}
.prov .dot {
  position: absolute; left: 0; top: .55em;
  width: .34rem; height: .34rem; background: var(--fg-3); border-radius: 50%;
}
.prov em { font-style: normal; color: var(--fg-2); }

/* ---- a verse whose translation was corrected after review ---- */
.fixtag {
  display: inline-block; margin-top: .4rem;
  font-family: var(--mono); font-size: .54rem; letter-spacing: .11em; text-transform: uppercase;
  color: var(--accent); border: 1px solid var(--accent); padding: .1rem .28rem; white-space: nowrap;
  cursor: help;
}
@media (max-width: 620px) { .fixtag { margin-top: 0; margin-left: .5rem; } }