:root{--primary-bg: #f4f4f9;--primary-text: #2c3038;--header-font: "Merriweather", serif;--body-font: "Lato", sans-serif;--accent-color: #0056b3;--card-bg: #ffffff;--border-color: #e2e4ea;--box-shadow: 0 4px 12px rgba(0,0,0,.06);--button-bg: #007bff;--button-hover-bg: #0056b3;--bar-bg: rgba(255, 255, 255, .88);--muted-text: #666e7d;--reading-font-size: 1.1rem}[data-theme=dark]{--primary-bg: #0f1015;--primary-text: #d8dbe2;--accent-color: #4da3ff;--card-bg: #181920;--border-color: #272a33;--box-shadow: 0 4px 16px rgba(0,0,0,.45);--button-bg: #2563eb;--button-hover-bg: #1d4ed8;--bar-bg: rgba(24, 25, 32, .88);--muted-text: #9aa1b0}[data-theme=sepia]{--primary-bg: #f7eedc;--primary-text: #4a3b2c;--accent-color: #8c5222;--card-bg: #faefe0;--border-color: #ded1b8;--box-shadow: 0 4px 12px rgba(74, 59, 44, .08);--button-bg: #a26533;--button-hover-bg: #824f24;--bar-bg: rgba(250, 239, 224, .9);--muted-text: #766352}html{scroll-behavior:smooth}body{margin:0;font-family:var(--body-font);background-color:var(--primary-bg);color:var(--primary-text);line-height:1.6;transition:background-color .25s ease,color .25s ease}#reading-progress-bar{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,#007bff,#8b5cf6,#ec4899);width:0%;z-index:1000;transition:width .1s ease-out}.reader-top-bar{position:sticky;top:0;z-index:100;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);background:var(--bar-bg);border-bottom:1px solid var(--border-color);padding:.6rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:.75rem;transition:background-color .25s ease,border-color .25s ease}.reader-brand-link{display:inline-flex;align-items:center;gap:.4rem;text-decoration:none;color:var(--accent-color);font-weight:700;font-size:.85rem;padding:.35rem .75rem;border-radius:9999px;background:var(--card-bg);border:1px solid var(--border-color);transition:all .2s ease}.reader-brand-link:hover{transform:translate(-2px);box-shadow:0 2px 6px #0000001a}.reader-status{font-size:.85rem;color:var(--muted-text);font-weight:600;letter-spacing:.02em}.reader-controls{display:flex;align-items:center;gap:.4rem}.reader-btn{background:var(--card-bg);color:var(--primary-text);border:1px solid var(--border-color);padding:.35rem .65rem;border-radius:6px;font-size:.8rem;font-weight:600;cursor:pointer;transition:all .15s ease;display:inline-flex;align-items:center;gap:.3rem}.reader-btn:hover{border-color:var(--accent-color);color:var(--accent-color)}.reader-btn.active{background:var(--accent-color);color:#fff;border-color:var(--accent-color)}#app-container{max-width:900px;margin:1.5rem auto 3rem;padding:1rem}header{text-align:center;margin-bottom:2.5rem;border-bottom:1px solid var(--border-color);padding-bottom:1.5rem}header h1{font-family:var(--header-font);font-size:2.5rem;margin-bottom:.5rem;line-height:1.25}.author{font-size:1.15rem;color:var(--muted-text);margin:0}main{display:flex;flex-direction:column;gap:2.5rem}section{background:var(--card-bg);padding:2rem;border-radius:12px;box-shadow:var(--box-shadow);border:1px solid var(--border-color);transition:background-color .25s ease,border-color .25s ease}.book-info{display:flex;flex-wrap:wrap;gap:2rem;align-items:center}.book-cover{flex:1 1 260px;max-width:280px;height:auto;border-radius:8px;box-shadow:var(--box-shadow);border:1px solid var(--border-color)}.description{flex:2 1 380px}h2{font-family:var(--header-font);margin-top:0;border-bottom:2px solid var(--accent-color);padding-bottom:.5rem;display:inline-block}.table-of-contents{background-color:var(--primary-bg);border:1px solid var(--border-color);border-radius:10px;padding:1.25rem 1.5rem;margin-bottom:2.5rem}.table-of-contents h4{font-family:var(--header-font);margin-top:0;margin-bottom:1rem;font-size:1.3rem;color:var(--accent-color)}.table-of-contents ul{list-style:none;padding:0;margin:0;columns:2}.table-of-contents li{margin-bottom:.5rem}.table-of-contents a{text-decoration:none;color:var(--primary-text);transition:color .2s;display:inline-block;padding:.15rem 0}.table-of-contents a:hover,.table-of-contents a:focus{color:var(--accent-color);text-decoration:underline}.book-chapter{margin-bottom:2.5rem}.book-chapter:last-of-type{margin-bottom:0}.book-content h3{font-family:var(--header-font);font-size:1.8rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--border-color);scroll-margin-top:4.5rem}.book-content p{font-size:var(--reading-font-size);line-height:1.8;text-align:justify;margin-bottom:1.25rem}.audiobook-player{text-align:center}.instructions{color:var(--muted-text);margin-bottom:1.5rem}.audiobook-button{display:inline-flex;align-items:center;gap:.5rem;background-color:var(--button-bg);color:#fff;padding:.9rem 2rem;text-decoration:none;font-size:1.15rem;font-weight:700;border-radius:8px;transition:background-color .2s ease,transform .2s ease;box-shadow:0 3px 8px #0000002e}.audiobook-button:hover{background-color:var(--button-hover-bg);transform:translateY(-2px)}.reviews-section{text-align:center}.reviews-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;margin-bottom:2.5rem;text-align:left}.review-card{background:var(--primary-bg);border:1px solid var(--border-color);border-radius:10px;padding:1.5rem;display:flex;flex-direction:column}.stars{color:#ffb800;font-size:1.25rem;margin-bottom:.75rem}.review-text{font-style:italic;margin:0 0 1rem;flex-grow:1;color:var(--muted-text)}.reviewer{font-weight:700;font-style:normal;color:var(--primary-text);align-self:flex-end}.podcast-review h3{font-family:var(--header-font);font-size:1.8rem;margin-bottom:1rem}.back-to-top{position:fixed;bottom:2rem;right:2rem;background:var(--button-bg);color:#fff;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px #00000040;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .3s ease,transform .2s ease;border:none;font-size:1.25rem;z-index:99}.back-to-top.visible{opacity:1;pointer-events:auto}.back-to-top:hover{transform:translateY(-3px);background:var(--button-hover-bg)}.resume-banner{position:fixed;bottom:2rem;left:50%;transform:translate(-50%);background:var(--card-bg);color:var(--primary-text);border:1px solid var(--border-color);padding:.75rem 1.25rem;border-radius:9999px;box-shadow:0 8px 24px #0000002e;display:flex;align-items:center;gap:.75rem;font-size:.85rem;font-weight:600;z-index:98;animation:slideUp .3s cubic-bezier(.16,1,.3,1)}.resume-btn{background:var(--button-bg);color:#fff;border:none;padding:.3rem .75rem;border-radius:9999px;cursor:pointer;font-size:.8rem;font-weight:700}.dismiss-btn{background:transparent;color:var(--muted-text);border:none;cursor:pointer;font-size:.8rem}@keyframes slideUp{0%{opacity:0;transform:translate(-50%,20px)}to{opacity:1;transform:translate(-50%)}}footer{text-align:center;margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--border-color);color:var(--muted-text)}@media(max-width:768px){.book-info{flex-direction:column;text-align:center}header h1{font-size:2rem}.reader-status{display:none}}@media(max-width:500px){.table-of-contents ul{columns:1}.reader-top-bar{padding:.5rem .75rem}}