/* ==========================================================================
   UECF.NET — Professor Muthyala Theophilus · Audio Book (తెలుగు / English)
   Design language adapted from the UECF.NET "Life and Work of St. Paul"
   web book, modernised for a single-page audiobook player.
   Vanilla CSS, no framework, no build step.
   ========================================================================== */

:root{
  --ink:#101B31;
  --ink-2:#16294C;
  --ink-soft:#2C3E60;
  --ink-mute:#5A6E90;
  --gold:#C79A3D;
  --gold-soft:#E4C685;
  --gold-dim:#8A6A22;
  --maroon:#8B3A42;
  --teal:#2F5D62;
  --cream:#FAF6EC;
  --cream-dim:#F0E7D5;
  --paper:#FFFFFF;
  --line:#E2D8C0;
  --line-soft:#EDE5D3;

  --font-display:'Fraunces',Georgia,'Times New Roman',serif;
  --font-body:'Source Sans 3',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-read:'Source Serif 4',Georgia,'Times New Roman',serif;
  --font-te:'Noto Sans Telugu','Gautami','Source Sans 3',system-ui,sans-serif;

  --max:1160px;
  --read:72ch;
  --r:14px;
  --sh:0 1px 2px rgba(16,27,49,.06),0 8px 24px rgba(16,27,49,.07);
  --sh-lg:0 12px 40px rgba(16,27,49,.16);
  --header-h:62px;
  --player-h:132px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px);-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--cream);line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-wrap:break-word;padding-bottom:calc(var(--player-h) + 18px)}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.18;margin:0 0 .45em}
a{color:var(--maroon);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:4px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--gold);color:#2a1e06;padding:10px 18px;z-index:400;font-weight:700}
.skip-link:focus{left:0}
.container{max-width:var(--max);margin:0 auto;padding:0 22px}
.kolam-rule{height:12px;width:100%;background-image:radial-gradient(circle at 6px 6px,currentColor 2px,transparent 2.4px);
  background-size:22px 12px;background-repeat:repeat-x;opacity:.55;color:var(--gold)}

/* Telugu typography */
html[lang="te"] body{font-family:var(--font-te)}
html[lang="te"] h1,html[lang="te"] h2,html[lang="te"] h3,html[lang="te"] h4{font-family:var(--font-te);font-weight:700;line-height:1.42}
[lang="te"]{font-family:var(--font-te)}
[lang="en"]{font-family:var(--font-body)}

/* ---------------------------------------------------------------- header */
header.site-header{background:var(--ink);color:var(--cream);position:sticky;top:0;z-index:120;
  border-bottom:3px solid var(--gold);box-shadow:0 4px 20px rgba(0,0,0,.18)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:9px 22px;
  max-width:var(--max);margin:0 auto;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:12px;color:var(--cream);min-width:0}
.brand:hover{text-decoration:none}
.brand-mark{width:42px;height:42px;flex:none;border-radius:8px;background:linear-gradient(160deg,#1d3563,#0b1730);
  border:1px solid rgba(228,198,133,.4);display:grid;place-items:center}
.brand-mark svg{width:26px;height:26px;fill:var(--gold-soft)}
.brand-text{display:flex;flex-direction:column;line-height:1.22;min-width:0}
.brand-text .full{font-family:var(--font-display);font-size:1rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text .sub{font-size:.75rem;color:var(--gold-soft);letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.header-right{display:flex;align-items:center;gap:14px;flex:none}
.primary-nav ul{display:flex;gap:18px;align-items:center}
.primary-nav a{color:var(--cream);font-weight:600;font-size:.93rem}
.primary-nav a:hover{color:var(--gold-soft);text-decoration:none}
.lang-switch{display:inline-flex;border:1px solid rgba(228,198,133,.55);border-radius:999px;overflow:hidden;flex:none;background:rgba(0,0,0,.18)}
.lang-switch a{padding:6px 14px;font-size:.86rem;font-weight:700;color:var(--cream);line-height:1.3}
.lang-switch a:hover{background:rgba(255,255,255,.1);text-decoration:none}
.lang-switch a[aria-current="true"]{background:var(--gold);color:#2a1e06}
.lang-switch .te{font-family:var(--font-te)}
@media(max-width:760px){
  .primary-nav{display:none}
  .brand-text .full{font-size:.88rem;max-width:46vw}
  .brand-text .sub{max-width:46vw}
}

/* ------------------------------------------------------------------ hero */
.hero{background:
   radial-gradient(760px 440px at 84% 18%,rgba(199,154,61,.24),rgba(199,154,61,0) 62%),
   linear-gradient(150deg,#0a1730 0%,#132a52 52%,#0b1a35 100%);
  color:#f4efe2;padding:48px 0 0;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='1200' height='630' viewBox='0 0 1200 630'><g fill='none' stroke='%23E4C685' stroke-opacity='.08'><path d='M600 -50 L600 700'/><path d='M0 315 L1200 315'/><circle cx='600' cy='315' r='260'/><circle cx='600' cy='315' r='420'/></g></svg>") center/cover no-repeat;opacity:.9}
.hero .container{position:relative}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:42px;align-items:center}
.eyebrow{font-size:.75rem;letter-spacing:.24em;text-transform:uppercase;color:var(--gold-soft);font-weight:700;margin-bottom:12px}
html[lang="te"] .eyebrow{letter-spacing:.06em;text-transform:none;font-size:.85rem}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);color:#fff;margin-bottom:.12em;letter-spacing:-.01em}
html[lang="te"] .hero h1{font-size:clamp(1.8rem,4.6vw,2.9rem)}
.hero .h1-alt{font-size:clamp(1.05rem,2.6vw,1.5rem);color:var(--gold-soft);font-weight:600;margin:0 0 14px;font-family:var(--font-display)}
.hero p.lede{color:#cddaee;font-size:1.05rem;max-width:60ch}
.byline{color:#e8dcc0;font-size:1rem;margin:0 0 6px}
.byline strong{color:#fff}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 22px}
.chip{background:rgba(255,255,255,.09);border:1px solid rgba(228,198,133,.35);color:#eadfc6;border-radius:999px;padding:5px 14px;font-size:.8rem;font-weight:600}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;padding-bottom:44px}
.btn{display:inline-flex;align-items:center;gap:9px;border:0;cursor:pointer;font-family:inherit;font-weight:700;font-size:.94rem;
  padding:12px 22px;border-radius:999px;transition:.18s;text-decoration:none}
.btn svg{width:18px;height:18px;fill:currentColor}
.btn-gold{background:linear-gradient(180deg,#e0b45f,#c79a3d);color:#2a1e06;box-shadow:0 6px 18px rgba(199,154,61,.3)}
.btn-gold:hover{filter:brightness(1.07);text-decoration:none}
.btn-ghost{background:transparent;color:#f0e6d2;border:1.5px solid rgba(240,230,210,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.09);text-decoration:none}
.hero-art{position:relative;padding:10px 0 26px}
.hero-art .frame{position:relative;width:min(300px,70%);margin:0 auto;aspect-ratio:4/5;border-radius:50%/50%;
  background:linear-gradient(160deg,#1d3563,#0b1730);border:6px double var(--gold-soft);box-shadow:0 22px 50px rgba(0,0,0,.5);overflow:hidden}
.hero-art .frame img{width:100%;height:100%;object-fit:cover}
.hero-art .caption{text-align:center;color:#d5c9a8;font-size:.85rem;margin-top:14px}
@media(max-width:880px){
  .hero{padding-top:30px}
  .hero-grid{grid-template-columns:1fr;gap:12px}
  .hero-art{order:-1;padding:0}
  .hero-art .frame{width:min(220px,58%)}
  .hero-cta{padding-bottom:34px}
}

/* ---------------------------------------------------------------- layout */
main{padding-top:6px}
section{padding:44px 0}
section.alt{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:22px;max-width:74ch}
.sec-head .eyebrow{color:var(--maroon)}
.sec-head h2{font-size:clamp(1.5rem,3.4vw,2.05rem)}
.sec-head p{color:var(--ink-soft)}
.two-col{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:32px;align-items:start}
@media(max-width:960px){.two-col{grid-template-columns:1fr}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:22px 26px;box-shadow:var(--sh)}
.callout{background:#fffaf0;border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:10px;padding:16px 20px;color:var(--ink-soft);font-size:.95rem}
.callout h3{font-size:1.02rem;margin-bottom:.3em;color:var(--ink)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin:0 0 6px}
.stat{background:var(--paper);border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:10px;padding:14px 16px;box-shadow:var(--sh)}
.stat .n{font-family:var(--font-display);font-size:1.6rem;font-weight:700;color:var(--ink);line-height:1}
.stat .l{font-size:.82rem;color:var(--ink-mute);margin-top:6px}

/* ---------------------------------------------------------------- chapters */
.toc-list{display:grid;gap:8px}
.toc-group{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-dim);font-weight:700;margin:14px 0 4px;
  border-bottom:2px solid var(--gold);padding-bottom:5px}
html[lang="te"] .toc-group{letter-spacing:.04em;text-transform:none;font-size:.86rem}
.toc-item{background:var(--paper);border:1px solid var(--line);border-radius:10px;display:flex;gap:12px;align-items:center;
  padding:11px 14px;transition:.16s;width:100%;text-align:left;cursor:pointer;color:var(--ink)}
.toc-item:hover{border-color:var(--gold-soft);box-shadow:var(--sh)}
.toc-item[aria-current="true"]{border-color:var(--gold);background:#fffaf0;box-shadow:0 0 0 3px rgba(199,154,61,.18)}
.toc-no{flex:none;width:2.4em;height:2.4em;border-radius:50%;display:grid;place-items:center;font-family:var(--font-display);font-weight:700;
  color:var(--maroon);background:var(--cream-dim);font-size:.9rem}
.toc-item[aria-current="true"] .toc-no{background:var(--gold);color:#2a1e06}
.toc-item.is-playing .toc-no{background:var(--gold);color:#2a1e06}
.toc-body{min-width:0;flex:1}
.toc-body h3{margin:0 0 2px;font-size:1rem;color:var(--ink);font-family:var(--font-body);font-weight:700}
html[lang="te"] .toc-body h3{font-family:var(--font-te)}
.toc-body p{margin:0;font-size:.84rem;color:var(--ink-mute);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.toc-meta{flex:none;font-size:.76rem;color:var(--ink-mute);white-space:nowrap;font-variant-numeric:tabular-nums;display:flex;align-items:center;gap:8px}
.toc-meta .done{color:var(--teal);font-weight:700}
.toc-meta .bar{width:46px;height:4px;border-radius:2px;background:var(--line);overflow:hidden}
.toc-meta .bar i{display:block;height:100%;background:var(--gold);width:0}
@media(max-width:560px){.toc-body p{display:none}.toc-meta .bar{display:none}}

/* --------------------------------------------------------------- reading */
.reader{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);overflow:hidden}
.reader-head{background:linear-gradient(150deg,#0d1c39,#16294c);color:#f2ecdd;padding:22px 26px;border-bottom:3px solid var(--gold)}
.reader-head .ch-no{font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--gold-soft);font-weight:700;margin-bottom:6px}
html[lang="te"] .reader-head .ch-no{letter-spacing:.04em;text-transform:none;font-size:.85rem}
.reader-head h2{color:#fff;font-size:clamp(1.3rem,3vw,1.9rem);margin:0}
.reader-head .sub{color:#c9d6ea;font-size:.95rem;margin:6px 0 0}
.reader-tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center;padding:12px 26px;border-bottom:1px solid var(--line);background:var(--cream)}
.reader-tools .spacer{flex:1}
.tbtn{display:inline-flex;align-items:center;gap:6px;font-size:.82rem;font-weight:700;color:var(--ink-soft);border:1px solid var(--line);
  background:var(--paper);border-radius:999px;padding:6px 13px;cursor:pointer;text-decoration:none}
.tbtn:hover{background:var(--cream-dim);color:var(--ink);text-decoration:none}
.tbtn[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.tbtn svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.reading{padding:26px 26px 30px;font-family:var(--font-read);font-size:1.08rem;line-height:1.78;color:#1c2434;max-width:var(--read)}
html[lang="te"] .reading{font-family:var(--font-te);font-size:1.04rem;line-height:2.05}
.reading.large{font-size:1.24rem}
html[lang="te"] .reading.large{font-size:1.2rem}
.reading p{margin:0 0 1.15em}
.reading h3{font-family:var(--font-display);font-size:1.18rem;margin:1.9em 0 .6em;color:var(--ink);padding-bottom:.25em;border-bottom:1px solid var(--line)}
html[lang="te"] .reading h3{font-family:var(--font-te)}
.reading h4,.reading .sub{font-family:var(--font-body);font-size:.9rem;color:var(--ink-mute);margin:-.3em 0 1.1em;font-weight:600}
.reading blockquote{margin:0 0 1.3em;padding:12px 18px;border-left:3px solid var(--gold);background:#fffaf0;border-radius:0 8px 8px 0;
  font-style:italic;color:var(--ink-soft);white-space:pre-line;font-size:.98em;line-height:1.6}
html[lang="te"] .reading blockquote{font-style:normal;line-height:1.9}
.reading .scripture{color:var(--teal);font-weight:600;border-bottom:1px dotted rgba(47,93,98,.55);white-space:nowrap}
.reading figure{margin:1.4em 0}
.reading figure img{border-radius:10px;border:1px solid var(--line);box-shadow:var(--sh)}
.reading figcaption{font-family:var(--font-body);font-size:.85rem;color:var(--ink-mute);margin-top:8px;text-align:center}
.reading .gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin:1.2em 0}
.reading .gallery figure{margin:0}
.chapfoot{display:flex;gap:12px;justify-content:space-between;flex-wrap:wrap;border-top:1px solid var(--line);padding:18px 26px 22px;background:var(--cream)}
.chapfoot button{flex:1 1 45%;min-width:200px;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:12px 14px;
  box-shadow:var(--sh);cursor:pointer;text-align:left;color:var(--ink)}
.chapfoot button:hover{border-color:var(--gold-soft)}
.chapfoot button:disabled{opacity:.4;cursor:default}
.chapfoot .k{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-dim);font-weight:700;display:block}
html[lang="te"] .chapfoot .k{letter-spacing:.04em;text-transform:none;font-size:.8rem}
.chapfoot .t{color:var(--ink);font-weight:600;display:block;margin-top:3px}
.chapfoot .next{text-align:right}
.audio-missing{display:none;margin:0 26px 18px;font-size:.88rem;color:#7a5410;background:rgba(199,154,61,.14);border:1px dashed rgba(199,154,61,.7);border-radius:8px;padding:10px 12px}
.reader[data-audio="missing"] .audio-missing{display:block}

/* --------------------------------------------------------------- sidebar */
.side{position:sticky;top:calc(var(--header-h) + 16px)}
.side .card+.card{margin-top:16px}
.side h3{font-size:1.02rem;margin-bottom:.5em}
.side p{font-size:.92rem;color:var(--ink-soft)}
.side ul li{font-size:.92rem;margin-bottom:6px}
.side .book-cover{border-radius:10px;border:1px solid var(--line);box-shadow:var(--sh);margin-bottom:12px}
.btn-pdf{display:flex;align-items:center;gap:11px;margin:0 0 16px;padding:11px 14px;border-radius:10px;
  background:linear-gradient(180deg,#e0b45f,#c79a3d);color:#2a1e06;font-weight:700;font-size:.94rem;
  box-shadow:0 6px 16px rgba(199,154,61,.28);transition:.16s}
.btn-pdf:hover{filter:brightness(1.06);text-decoration:none;color:#2a1e06}
.btn-pdf svg{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-pdf small{display:block;font-weight:600;font-size:.78rem;opacity:.75;margin-top:1px}

dl.meta{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;font-size:.9rem;margin:0}
dl.meta dt{color:var(--ink-mute);font-weight:600}
dl.meta dd{margin:0;color:var(--ink)}

/* ----------------------------------------------------------------- player */
.player{position:fixed;left:0;right:0;bottom:0;z-index:150;background:linear-gradient(135deg,#16294c,#0e1d38);color:#eee6d4;
  border-top:3px solid var(--gold);box-shadow:0 -10px 40px rgba(0,0,0,.35);padding-bottom:env(safe-area-inset-bottom,0)}
.player-inner{max-width:var(--max);margin:0 auto;padding:10px 18px 12px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:14px;align-items:center}
.p-main{display:flex;align-items:center;gap:8px}
.pbtn{flex:none;width:54px;height:54px;border-radius:50%;border:0;cursor:pointer;background:linear-gradient(180deg,#e0b45f,#c79a3d);color:#2a1e06;display:grid;place-items:center;transition:.16s}
.pbtn:hover:not(:disabled){filter:brightness(1.08)}
.pbtn:disabled{background:rgba(255,255,255,.14);color:#8ea3c4;cursor:not-allowed}
.pbtn svg{width:26px;height:26px;fill:currentColor}
.pbtn .i-pause{display:none}
.player.is-playing .pbtn .i-play{display:none}
.player.is-playing .pbtn .i-pause{display:block}
.player.is-loading .pbtn{animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.6}}
.icon-btn{background:transparent;border:0;color:#eee6d4;cursor:pointer;padding:6px;display:grid;place-items:center;border-radius:8px}
.icon-btn:hover{color:var(--gold-soft);background:rgba(255,255,255,.06)}
.icon-btn:disabled{opacity:.35;cursor:not-allowed}
.icon-btn svg{width:22px;height:22px;fill:currentColor}
.icon-btn .lbl{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.p-info{min-width:0}
.p-k{font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-soft);font-weight:700;margin:0}
html[lang="te"] .p-k{letter-spacing:.04em;text-transform:none;font-size:.78rem}
.p-title{color:#fff;font-weight:700;font-size:.98rem;margin:1px 0 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.p-seek{display:flex;align-items:center;gap:10px}
.time{font-variant-numeric:tabular-nums;font-size:.78rem;color:#adc0dc;flex:none;min-width:40px}
.time.t-rem{text-align:right}
input[type=range].seek,input[type=range].vol{-webkit-appearance:none;appearance:none;height:6px;border-radius:3px;background:#33436a;cursor:pointer;margin:0}
input[type=range].seek{flex:1;min-width:60px;background:linear-gradient(to right,var(--gold) var(--pct,0%),#33436a var(--pct,0%))}
input[type=range].vol{width:84px;flex:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--gold-soft);border:0;box-shadow:0 0 0 3px rgba(228,198,133,.25)}
input[type=range]::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--gold-soft);border:0}
.p-aux{display:flex;align-items:center;gap:8px}
.rate{background:rgba(255,255,255,.1);color:#eee6d4;border:1px solid rgba(228,198,133,.4);border-radius:999px;font-family:inherit;font-weight:700;font-size:.8rem;padding:6px 10px;cursor:pointer}
.rate option{color:#111}
.p-vol{display:flex;align-items:center;gap:4px}
@media(max-width:760px){
  :root{--player-h:150px}
  .player-inner{grid-template-columns:1fr;gap:6px;padding:8px 12px 10px}
  .p-info{order:-1}
  .p-main{justify-content:center;gap:14px}
  .p-aux{justify-content:space-between}
  .p-vol input[type=range].vol{width:70px}
  .pbtn{width:58px;height:58px}
}

/* --------------------------------------------------------------- footer */
footer.site-footer{background:var(--ink);color:var(--cream-dim);padding:0 0 28px;margin-top:20px}
footer.site-footer h3{color:var(--gold-soft);font-size:1rem}
footer.site-footer a{color:var(--cream)}
footer.site-footer a:hover{color:var(--gold-soft)}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:28px;padding:32px 0 24px}
.footer-grid p,.footer-grid li{font-size:.92rem}
.footer-grid li{margin-bottom:6px}
.footer-bottom{border-top:1px solid rgba(228,198,133,.22);padding-top:16px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.83rem;color:#a9b8ce}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(var(--player-h) + 14px);background:var(--ink);color:#fff;padding:10px 16px;border-radius:999px;
  font-size:.88rem;box-shadow:var(--sh-lg);opacity:0;pointer-events:none;transition:.25s;z-index:200;border:1px solid rgba(228,198,133,.4)}
.toast.on{opacity:1}

@media print{header.site-header,.player,.reader-tools,.chapfoot,.hero-cta{display:none}body{background:#fff;padding:0}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}