*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{font-family:'Poppins',sans-serif;background:#faf6f0;color:#1e3a5f;line-height:1.7;display:flex;overflow:hidden}

/* Sidebar */
.sidebar{width:320px;min-width:320px;background:#f0ebe4;border-right:1px solid #e0d8cc;display:flex;flex-direction:column;overflow:hidden;height:100vh}
.sidebar-header{padding:16px 18px 12px;border-bottom:1px solid #e0d8cc;flex-shrink:0}
.sidebar-header h2{font-size:14px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:#1e3a5f;margin-bottom:10px}

/* Search */
.search-box{display:flex;gap:6px}
.search-box input{flex:1;padding:8px 12px;border:1px solid #e0d8cc;border-radius:20px;font-size:12px;font-family:'Poppins',sans-serif;outline:none;background:#fff;color:#1e3a5f}
.search-box input:focus{border-color:#f7e6b2}
.search-box button{padding:8px 14px;border:none;border-radius:20px;background:#1e3a5f;color:#fff;font-size:12px;font-weight:500;cursor:pointer;font-family:'Poppins',sans-serif}
.search-box button:hover{background:#2d5075}
.search-results{display:none;margin-top:8px;max-height:200px;overflow-y:auto;font-size:12px}
.search-result{display:block;width:100%;padding:8px;color:#1e3a5f;text-align:left;background:transparent;border:0;border-bottom:1px solid #e0d8cc;cursor:pointer;font-family:inherit}
.search-result:hover{background:#f7e6b2}
.search-result-label{font-size:12px;font-weight:500;margin-bottom:3px}
.search-result-excerpt{font-size:11px;color:#5a6a6a;line-height:1.4}
.search-results .no-results{padding:10px;color:#8a9a9a;font-style:italic;text-align:center}

/* Chapter tree */
.chapter-tree{flex:1;overflow-y:auto;padding:8px 0;scrollbar-width:thin;scrollbar-color:#d0c8bc transparent}
.chapter-item{border-bottom:1px solid #e8e0d5}
.chapter-title{padding:10px 18px;width:100%;font-size:13px;font-weight:600;color:#1e3a5f;cursor:pointer;display:flex;align-items:center;justify-content:space-between;background:transparent;border:0;font-family:inherit;text-align:left}
.chapter-title .toggle{font-size:10px;color:#8a9a9a;cursor:pointer;padding:2px 6px;border-radius:4px}
.chapter-title .toggle:hover{background:#e0d8cc}
.subchapter-list{display:none;background:#f8f5f0}
.subchapter-list.open{display:block}
.subchapter-item{display:block;width:100%;padding:7px 18px 7px 32px;font-size:12px;color:#2a3a3a;text-decoration:none;text-align:left;background:transparent;border:0;border-bottom:1px solid rgba(0,0,0,0.03);cursor:pointer;transition:background 0.1s;font-family:inherit}
.subchapter-item.introduction{padding-left:18px;font-weight:500}
.subchapter-item:hover{background:#f7e6b2;color:#1e3a5f}
.subchapter-item.active{background:#f7e6b2;color:#1e3a5f;font-weight:500}

/* Main content */
.main-panel{flex:1;display:flex;flex-direction:column;overflow:hidden;height:100vh;height:100dvh;position:relative}
.reader-header{padding:10px 24px;border-bottom:1px solid #e0d8cc;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;background:#fff;flex-wrap:wrap;gap:6px}
.reader-header .title-area{display:flex;align-items:center;gap:10px}
.reader-header .title-area h1{font-size:18px;font-weight:600;color:#1e3a5f;line-height:1.3}
.reader-header .title-area .chapter-badge{font-size:11px;color:#8a9a9a;background:#f0ebe4;padding:3px 10px;border-radius:12px}
.reader-controls{display:flex;align-items:center;gap:5px}
.font-btn{background:#f0ebe4;border:1px solid #e0d8cc;color:#1e3a5f;cursor:pointer;border-radius:20px;padding:4px 11px;font-size:14px;font-weight:600;font-family:'Poppins',sans-serif;transition:all 0.15s}
.font-btn:hover{background:#f7e6b2;border-color:#f7e6b2}
.nav-btn{display:inline-block;padding:6px 14px;border-radius:20px;text-decoration:none;font-size:12px;font-weight:500;transition:all 0.2s;background:#f0ebe4;color:#1e3a5f;border:1px solid #e0d8cc;white-space:nowrap;font-family:'Poppins',sans-serif;cursor:pointer}
.nav-btn:hover{background:#f7e6b2;border-color:#f7e6b2}
.nav-btn:disabled{opacity:0.35}

.reader-content{flex:1;overflow-y:auto;padding:28px 32px 20px;scrollbar-width:thin;scrollbar-color:#d0c8bc transparent}
.reader-text{font-size:var(--reader-size,15px);line-height:1.9;color:#2a3a3a;text-align:justify;max-width:780px;margin:0 auto}
.reader-passage{font-size:var(--reader-size,15px);line-height:1.9}
.reader-text p{margin-bottom:1.2em}
.reader-text h3{margin:1.5em 0 0.8em;font-size:calc(var(--reader-size,15px) + 2px);color:#1e3a5f;font-weight:600}
.reader-text em{font-style:italic}
.reader-text strong{font-weight:600}
.reader-status{max-width:780px;margin:0 auto}
.reader-status[hidden]{display:none}
.position-label{font-size:12px;color:#8a9a9a}

.reader-footer{border-top:1px solid #e0d8cc;padding:14px 24px 12px;flex-shrink:0;background:#fff}
.reader-footer .nav-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.cta-row{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;max-width:780px;margin:0 auto}
.cta-link{display:inline-flex;align-items:center;justify-content:center;padding:6px 14px;border-radius:18px;text-decoration:none;font-size:12px;font-weight:500;transition:all 0.2s;white-space:nowrap}
.cta-1{background:linear-gradient(135deg,#1e3a5f,#2d5075);color:#f0ead8}
.cta-1:hover{background:linear-gradient(135deg,#162d4a,#1e3a5f)}
.cta-2{background:#f7e6b2;color:#1e3a5f}
.cta-2:hover{background:#f0d88a}

.loading{text-align:center;padding:60px 20px;color:#8a9a9a;font-size:14px}
.chapter-badge{display:none}
.sidebar-overlay{display:none}
.hamburger{display:none}
.mobile-search-toggle{display:none}
.mobile-search-bar,.mobile-search-results{display:none}

@media(max-width:768px){
/* Sidebar → drawer overlay */
.sidebar{position:fixed;top:0;left:0;width:300px;height:100vh;z-index:1000;transform:translateX(-100%);transition:transform 0.3s ease;box-shadow:2px 0 12px rgba(0,0,0,0.15);min-width:0}
.sidebar.open{transform:translateX(0)}
.sidebar-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.35);z-index:999;border:0}
.sidebar-overlay.show{display:block}
.sidebar-header{padding:12px 14px 10px}
.sidebar-header h2{font-size:12px;margin-bottom:8px}
.search-box input{padding:5px 8px;font-size:11px}
.search-box button{padding:5px 10px;font-size:11px}
.search-results{max-height:150px}
.chapter-tree{padding:4px 0}
.chapter-title{padding:8px 14px;font-size:12px}
.subchapter-item{padding:6px 14px 6px 24px;font-size:11px}

/* Compact header */
.reader-header{padding:6px 10px;gap:4px;min-height:40px}
.reader-header .title-area{flex:1;min-width:0;overflow:hidden;position:relative}
.reader-header .title-area h1{font-size:13px;white-space:nowrap;max-width:none;display:block}
.reader-header .title-area h1.scrolling{animation:scroll-title 8s ease-in-out infinite}
@keyframes scroll-title{0%,15%{transform:translateX(0)}45%{transform:translateX(var(--scroll-dist,-50px))}55%{transform:translateX(var(--scroll-dist,-50px))}85%,100%{transform:translateX(0)}}
.reader-controls{gap:3px}
.font-btn{padding:3px 8px;font-size:12px}

/* Hide top nav buttons on mobile */
#prevBtnTop,#nextBtnTop{display:none!important}

/* Hamburger visible */
.hamburger{display:inline-flex!important;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:#f0ebe4;border-radius:50%;cursor:pointer;font-size:18px;color:#1e3a5f;flex-shrink:0}
.hamburger:hover{background:#f7e6b2}

/* Search toggle visible */
.mobile-search-toggle{display:inline-flex!important;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:#f0ebe4;border-radius:50%;cursor:pointer;font-size:16px;color:#1e3a5f;flex-shrink:0}
.mobile-search-toggle:hover{background:#f7e6b2}

/* Mobile search bar */
.mobile-search-bar{display:none;padding:6px 10px 8px;background:#f5f0e8;border-bottom:1px solid #e0d8cc}
.mobile-search-bar.show{display:block}
.mobile-search-bar form{display:flex;gap:6px;width:100%}
.mobile-search-bar input{flex:1;padding:5px 8px;border:1px solid #e0d8cc;border-radius:18px;font-size:12px;font-family:'Poppins',sans-serif;outline:none;background:#fff;color:#1e3a5f}
.mobile-search-bar button{padding:5px 10px;border:none;border-radius:18px;background:#1e3a5f;color:#fff;font-size:11px;font-weight:500;cursor:pointer;font-family:'Poppins',sans-serif}
.mobile-search-results{display:none;background:#fff;border:1px solid #e0d8cc;border-radius:8px;max-height:200px;overflow-y:auto;position:absolute;left:10px;right:10px;z-index:100;box-shadow:0 4px 12px rgba(0,0,0,0.15)}
.mobile-search-results.show{display:block}

.reader-content{padding:12px 12px}
.reader-text{font-size:var(--reader-size,14px);line-height:1.8}

.reader-footer{padding:8px 10px 10px}
.reader-footer .nav-row{gap:6px;margin-bottom:6px}
.nav-btn{padding:5px 10px;font-size:11px}
#positionLabel{font-size:10px}
.cta-row{display:grid;grid-template-columns:1fr 1fr;gap:4px;max-width:100%}
.cta-link{padding:4px 8px;font-size:10px;justify-content:flex-start}
.cta-link:nth-child(even){justify-content:flex-end}
}