:root{--primary-color:#2c3e50;--secondary-color:#e67e22;--accent-color:#3498db;--bg-color:#fdfaf6;--card-bg:#fff;--text-color:#333;--light-text:#777;--border-radius:8px;--shadow:0 4px 15px #0000001a}[data-theme=dark]{--primary-color:#34495e;--secondary-color:#f39c12;--accent-color:#2980b9;--bg-color:#1a1a1a;--card-bg:#2c2c2c;--text-color:#ecf0f1;--light-text:#bdc3c7;--shadow:0 4px 15px #00000080}*{box-sizing:border-box;margin:0;padding:0;transition:background-color .3s,color .3s,border-color .3s}body{color:var(--text-color);background-color:var(--bg-color);padding-bottom:50px;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6}h1{text-align:center;color:var(--primary-color);padding:40px 20px 10px;font-size:2.5em}h2,h3{text-align:center;color:var(--primary-color);margin-bottom:20px}hr{background:linear-gradient(90deg,#0000,#ccc,#0000);border:0;height:1px;margin:40px 0}header img[title=bookworm]{box-shadow:var(--shadow);border-radius:50%;margin:0 auto 20px;display:block}h4{text-align:center;max-width:600px;margin:20px auto}p{text-align:center;max-width:600px;margin:10px auto}nav{background-color:var(--primary-color);z-index:1000;box-shadow:var(--shadow);margin-bottom:40px;padding:15px 0;position:sticky;top:0}nav ul{justify-content:center;gap:30px;list-style:none;display:flex}nav a{color:#fff;font-weight:600;text-decoration:none;transition:color .3s,transform .3s;display:inline-block}nav a:hover{color:var(--secondary-color);transform:translateY(-2px)}.menu-toggle{background-color:var(--primary-color);border:1px solid #ffffff40;margin:0 auto 10px;padding:10px 14px;display:none}@media (width<=900px){nav{padding:10px 0}.menu-toggle{display:inline-block}nav ul{flex-direction:column;align-items:center;gap:10px;padding:6px 12px 12px;display:none}nav.nav-open ul{display:flex}}main{max-width:95%;margin:0 auto;padding:0 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a:hover,article a:hover{color:var(--secondary-color)}form{flex-direction:column;gap:15px;max-width:600px;margin:20px auto;display:flex}fieldset{border:1px solid var(--primary-color);border-radius:var(--border-radius);padding:20px}legend{color:var(--primary-color);padding:0 10px;font-weight:700}form p{text-align:left;grid-template-columns:120px 1fr;align-items:center;gap:15px;max-width:100%;display:grid}label{font-weight:700}input,textarea{border:1px solid var(--primary-color);background-color:var(--card-bg);width:100%;color:var(--text-color);border-radius:4px;padding:10px;font-size:16px}input:focus,textarea:focus{border-color:var(--accent-color);outline:none}button[type=submit]{width:100%;margin-top:10px}.book-cover{cursor:zoom-in;margin:0 auto;transition:transform .3s,box-shadow .3s;display:block}.book-cover:hover{z-index:10;background-color:var(--card-bg);position:relative;transform:scale(3);box-shadow:0 4px 15px #0000004d}tr{height:80px}.table-container{justify-content:center;width:100%;padding:0 40px;display:flex;overflow-x:auto}table{border-collapse:collapse;background-color:var(--card-bg);box-shadow:var(--shadow);border-radius:var(--border-radius);border:none;margin:20px 0}th,td{text-align:left;border-bottom:1px solid var(--primary-color);padding:8px 10px}th{background-color:var(--primary-color);color:#fff;font-weight:600}tr:hover{background-color:var(--bg-color)}caption{color:var(--primary-color);margin-bottom:10px;font-size:1.2em;font-weight:700}button{background-color:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:4px;padding:12px;font-size:16px;transition:background-color .3s}button:hover{background-color:var(--secondary-color)}footer{background-color:var(--primary-color);color:#fff;text-align:center;margin-top:50px;padding:30px}.account-container{background-color:var(--card-bg);border-radius:var(--border-radius);max-width:900px;box-shadow:var(--shadow);text-align:center;margin:40px auto;padding:20px}.account-card{background-color:var(--card-bg);border:1px solid var(--primary-color);border-radius:var(--border-radius);flex-direction:column;justify-content:space-between;align-items:center;padding:20px;transition:transform .3s,box-shadow .3s;display:flex}.account-card:hover{box-shadow:var(--shadow);transform:translateY(-5px)}.account-card h2{color:var(--primary-color);margin-bottom:10px;font-size:1.5em}.account-card p{color:var(--light-text);margin-bottom:20px}.account-card .button{background-color:var(--accent-color);border-radius:4px;padding:10px 20px;font-weight:700;text-decoration:none;transition:background-color .3s;color:#fff!important}.account-card 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button{background-color:var(--accent-color);color:#fff;cursor:pointer;width:60px;height:60px;box-shadow:var(--shadow);border:none;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;padding:10px;font-size:10px;font-weight:700;line-height:1.2;transition:background-color .3s,transform .3s;display:flex}.back-to-top button span{font-size:20px}.back-to-top button:hover{background-color:var(--primary-color);transform:translateY(-5px)}.theme-toggle{z-index:2000;background-color:var(--primary-color);color:#fff;cursor:pointer;width:45px;height:45px;box-shadow:var(--shadow);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:20px;transition:background-color .3s,transform .3s;display:flex;position:fixed;top:20px;right:20px}.theme-toggle:hover{background-color:var(--secondary-color);transform:scale(1.1)}@media (width<=600px){.theme-toggle{top:10px;right:10px}nav ul{flex-direction:column;align-items:center;gap:15px}h1{font-size:1.8em}}