/* ============================================================
   Iqbal's Thesis of the Self — Classic Scholarly Reader
   ============================================================ */
:root{
  --paper:#fbf7ee;          /* warm ivory page          */
  --paper-2:#f4ecd9;        /* sidebar / slightly darker */
  --ink:#2c2417;            /* main text                 */
  --ink-soft:#5b5241;       /* secondary text            */
  --rule:#e2d7bd;           /* hairlines                 */
  --accent:#7a5230;         /* warm brown accent         */
  --accent-2:#9c6b3e;
  --gold:#b08833;
  --link:#8a5a2b;
  --sidebar-w:340px;
  --read-width:720px;
  --font-scale:1;
}
:root[data-theme="dark"]{
  --paper:#1c1a16;
  --paper-2:#242019;
  --ink:#e9e0cd;
  --ink-soft:#b3a992;
  --rule:#3a3428;
  --accent:#d8a86a;
  --accent-2:#e0b57d;
  --gold:#d8a86a;
  --link:#e0b57d;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,"Times New Roman",serif;
  font-size:calc(19px * var(--font-scale));
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--link);text-underline-offset:2px}

/* ---------- Layout ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{
  width:var(--sidebar-w);flex:0 0 var(--sidebar-w);
  background:var(--paper-2);
  border-right:1px solid var(--rule);
  height:100vh;position:sticky;top:0;
  display:flex;flex-direction:column;
}
.content-wrap{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;align-items:center}

/* ---------- Sidebar ---------- */
.side-head{padding:22px 22px 14px;border-bottom:1px solid var(--rule)}
.side-head .kicker{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-family:Georgia,serif}
.side-head h1{font-size:19px;line-height:1.3;margin:8px 0 2px;font-weight:600}
.side-head .author{font-size:13px;color:var(--ink-soft);font-style:italic}
.search-box{padding:12px 16px;border-bottom:1px solid var(--rule)}
.search-box input{
  width:100%;padding:9px 12px;border:1px solid var(--rule);border-radius:8px;
  background:var(--paper);color:var(--ink);font-family:inherit;font-size:14px;
}
.search-box input:focus{outline:none;border-color:var(--accent)}
.toc{overflow-y:auto;flex:1 1 auto;padding:8px 0 40px}
.toc-chapter{border:none}
.toc-chapter > button.ch-btn{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  font-family:inherit;color:var(--ink);
  padding:9px 16px 9px 20px;display:flex;gap:8px;align-items:baseline;
  font-size:14.5px;line-height:1.35;
}
.toc-chapter > button.ch-btn:hover{background:rgba(122,82,48,.08)}
.toc-chapter.active > button.ch-btn{color:var(--accent);font-weight:600}
.ch-btn .num{font-size:11px;color:var(--accent);min-width:20px;font-variant-numeric:tabular-nums}
.ch-btn .caret{margin-left:auto;transition:transform .2s;color:var(--ink-soft);font-size:11px}
.toc-chapter.open .caret{transform:rotate(90deg)}
.subs{list-style:none;margin:0;padding:0;max-height:0;overflow:hidden;transition:max-height .25s ease}
.toc-chapter.open .subs{max-height:1500px}
.subs li a{
  display:block;padding:5px 16px 5px 48px;font-size:13px;color:var(--ink-soft);
  text-decoration:none;line-height:1.3;
}
.subs li a:hover{color:var(--accent);background:rgba(122,82,48,.06)}
.subs li a.active{color:var(--accent);font-weight:600}

/* ---------- Reading area ---------- */
.topbar{
  width:100%;position:sticky;top:0;z-index:20;
  background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--rule);
  display:flex;align-items:center;gap:10px;padding:10px 22px;
}
.progress{position:absolute;left:0;bottom:-1px;height:2px;background:var(--gold);width:0}
.topbar .crumb{font-size:13px;color:var(--ink-soft);flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.icon-btn{
  background:none;border:1px solid var(--rule);border-radius:7px;cursor:pointer;
  color:var(--ink);width:34px;height:32px;font-size:15px;display:inline-flex;align-items:center;justify-content:center;
}
.icon-btn:hover{border-color:var(--accent);color:var(--accent)}
#menuBtn{display:none}

.reader{width:100%;max-width:calc(var(--read-width) + 120px);padding:0 60px 120px;flex:1 1 auto}
article{max-width:var(--read-width);margin:0 auto}

/* front / cover */
.cover{text-align:center;padding:70px 10px 40px}
.cover .kicker{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);margin-bottom:22px}
.cover h1{font-size:clamp(28px,5vw,44px);line-height:1.18;margin:0 0 6px;font-weight:600}
.cover .sub{font-size:clamp(17px,2.6vw,22px);color:var(--ink-soft);font-style:italic;margin:0 auto 28px;max-width:32ch}
.cover .rule{width:70px;height:2px;background:var(--gold);margin:28px auto}
.cover .byline{font-size:16px}
.cover .byline strong{color:var(--accent)}
.cover .org{font-size:13px;color:var(--ink-soft);margin-top:6px}
.cover img{max-width:min(360px,80%);height:auto;border-radius:6px;margin:0 auto 34px;display:block;box-shadow:0 8px 30px rgba(60,40,15,.18)}

.chapter-head{margin:26px 0 30px;padding-top:20px}
.chapter-head .ch-eyebrow{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-family:Georgia,serif}
.chapter-head h2{font-size:clamp(26px,4vw,34px);line-height:1.22;margin:8px 0 0;font-weight:600}
.chapter-head .ch-eyebrow + h2{margin-top:10px}
.chapter-head::after{content:"";display:block;width:56px;height:2px;background:var(--gold);margin-top:20px}

article h3{
  font-size:clamp(19px,2.6vw,23px);font-weight:600;color:var(--accent);
  margin:2.2em 0 .5em;line-height:1.3;scroll-margin-top:70px;
}
article p{margin:0 0 1.15em}
article p:first-of-type{margin-top:0}
article a{word-break:break-word}
article ul{margin:0 0 1.2em;padding-left:1.4em}
article li{margin:.3em 0}
article img{max-width:100%;height:auto;display:block;margin:1.6em auto;border-radius:6px;box-shadow:0 4px 18px rgba(60,40,15,.14)}
article strong{color:var(--ink)}
:root[data-theme="dark"] article strong{color:#fff}

/* drop cap on first paragraph of a chapter */
article.dropcap > p:first-of-type::first-letter{
  font-size:3.1em;line-height:.82;float:left;padding:.05em .09em 0 0;color:var(--accent);font-weight:600;
}

/* chapter nav */
.chap-nav{display:flex;justify-content:space-between;gap:16px;margin-top:60px;border-top:1px solid var(--rule);padding-top:26px}
.chap-nav a{
  text-decoration:none;color:var(--ink);border:1px solid var(--rule);border-radius:10px;
  padding:12px 16px;flex:1 1 0;min-width:0;transition:.15s;
}
.chap-nav a:hover{border-color:var(--accent);background:rgba(122,82,48,.05)}
.chap-nav a.next{text-align:right}
.chap-nav .lbl{display:block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:4px}
.chap-nav .ttl{font-size:14px;color:var(--ink-soft);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block}
.chap-nav a.disabled{opacity:.35;pointer-events:none}

/* search results */
.search-results{padding:6px 0}
.search-results .sr-item{padding:8px 16px 8px 20px;cursor:pointer;font-size:13.5px;border-bottom:1px solid var(--rule)}
.search-results .sr-item:hover{background:rgba(122,82,48,.07)}
.search-results .sr-ch{color:var(--accent);font-size:11px;text-transform:uppercase;letter-spacing:.08em}
.search-results .sr-snip{color:var(--ink-soft);display:block;margin-top:2px}
.search-results mark{background:var(--gold);color:#1c1a16;padding:0 1px;border-radius:2px}
.sr-empty{padding:18px 20px;color:var(--ink-soft);font-size:13px;font-style:italic}

/* back to top */
#toTop{position:fixed;right:22px;bottom:22px;z-index:30;opacity:0;pointer-events:none;transition:.2s;
  width:44px;height:44px;border-radius:50%;background:var(--accent);color:#fff;border:none;cursor:pointer;font-size:18px;box-shadow:0 4px 14px rgba(60,40,15,.3)}
#toTop.show{opacity:1;pointer-events:auto}

/* overlay for mobile drawer */
.overlay{display:none;position:fixed;inset:0;background:rgba(20,15,5,.45);z-index:40}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .reader{padding:0 22px 90px}
  #menuBtn{display:inline-flex}
  .sidebar{
    position:fixed;left:0;top:0;z-index:50;transform:translateX(-100%);
    transition:transform .25s ease;box-shadow:0 0 40px rgba(0,0,0,.25);
    width:min(86vw,340px);
  }
  body.nav-open .sidebar{transform:translateX(0)}
  body.nav-open .overlay{display:block}
}