header{background:#2c3e50;color:#fff;padding:20px 0;display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 10px #0000001a;position:relative}.logo{display:flex;align-items:center;gap:1px;margin-left:20px}.logo img{width:60px;height:auto}.logo-image{width:60px;height:60px;margin-right:15px;border-radius:8px;object-fit:contain}.logo-placeholder{width:60px;height:60px;margin-right:15px;background:#34495e;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.5rem}.logo h1{margin-left:10px;font-size:2rem;font-weight:700;text-shadow:2px 2px 4px rgba(0,0,0,.3);font-family:Arial,sans-serif}.user-info{display:flex;align-items:center;gap:20px;margin-right:20px}.user-details{display:flex;flex-direction:column;align-items:flex-end;gap:5px}.user-email{font-size:.9rem;color:#ecf0f1;font-weight:500}.user-role{display:flex;align-items:center;gap:8px}.role-icon{font-size:1.2rem}.role-badge{padding:4px 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a.active{background-color:#3498db;font-weight:700}.navbar-admin{background:linear-gradient(90deg,#e74c3c,#c0392b)!important;border-bottom:3px solid #a93226}.navbar-moderator{background:linear-gradient(90deg,#f39c12,#e67e22)!important;border-bottom:3px solid #d68910}.navbar-user{background:linear-gradient(90deg,#3498db,#2980b9)!important;border-bottom:3px solid #1f618d}.navbar-admin li a:hover,.navbar-moderator li a:hover,.navbar-user li a:hover{background-color:#fff3;transform:translateY(-2px)}.home-container{padding:2rem;max-width:1200px;margin:0 auto}.home-container h1{color:#2c3e50;text-align:center;margin-bottom:1rem}.home-container p{text-align:center;color:#7f8c8d;margin-bottom:2rem;font-size:1.1rem}.welcome-section{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:2rem;border-radius:12px;text-align:center;margin-bottom:2rem}.welcome-section h2{color:#fff;margin-bottom:.5rem;font-size:1.8rem}.welcome-section p{color:#ffffffe6;margin-bottom:0}.home-actions{text-align:center;margin-top:2rem}.cta-button{display:inline-block;background:#3498db;color:#fff;padding:12px 24px;text-decoration:none;border-radius:6px;font-weight:700;transition:background-color .3s}.cta-button:hover{background:#2980b9}.home-admin h1{color:#e74c3c;text-shadow:2px 2px 4px rgba(231,76,76,.3)}.home-moderator h1{color:#f39c12;text-shadow:2px 2px 4px rgba(243,156,18,.3)}.home-user h1{color:#3498db;text-shadow:2px 2px 4px rgba(52,152,219,.3)}.home-admin .welcome-section{background:linear-gradient(135deg,#e74c3c,#c0392b);border:3px solid #a93226}.home-moderator .welcome-section{background:linear-gradient(135deg,#f39c12,#e67e22);border:3px solid #d68910}.home-user .welcome-section{background:linear-gradient(135deg,#3498db,#2980b9);border:3px solid #1f618d}.home-admin .cta-button{background:#e74c3c;border:2px solid #c0392b}.home-admin .cta-button:hover{background:#c0392b}.home-moderator .cta-button{background:#f39c12;border:2px solid #e67e22}.home-moderator .cta-button:hover{background:#e67e22}.home-user .cta-button{background:#3498db;border:2px solid #2980b9}.home-user .cta-button:hover{background:#2980b9}.price{color:#e74c3c;font-weight:700;font-size:1.1rem;margin-bottom:.5rem}.published{font-size:.9rem;color:#27ae60;margin-bottom:1rem}.book-card .book-info h3{margin-bottom:.8rem!important}.book-card .book-info .author,.book-card .book-info .price{margin-bottom:1rem!important}.category-page{padding:2rem;max-width:1200px;margin:0 auto}.category-page h1{color:#2c3e50;text-align:center;margin-bottom:1rem}.category-page p{text-align:center;color:#7f8c8d;margin-bottom:2rem;font-size:1.1rem}.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem;margin-top:2rem}.book-card{background:#fff;border-radius:8px;box-shadow:0 2px 10px #0000001a;overflow:hidden;transition:transform .3s ease,box-shadow .3s 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auto}.register-page h1{color:#2c3e50;text-align:center;margin-bottom:1rem}.register-page p{text-align:center;color:#7f8c8d;margin-bottom:2rem;font-size:1.1rem}.register-form{background:#fff;padding:2rem;border-radius:8px;box-shadow:0 2px 10px #0000001a}.form-group input{width:100%;padding:.75rem;border:2px solid #ecf0f1;border-radius:4px;font-size:1rem;transition:border-color .3s ease}.form-group input:focus{outline:none;border-color:#3498db}button[type=submit]{width:100%;background:#27ae60;color:#fff;padding:.75rem;border:none;border-radius:4px;font-size:1rem;cursor:pointer;transition:background-color .3s ease;margin-bottom:1rem}button[type=submit]:hover{background:#229954}.login-link{text-align:center;color:#7f8c8d}.login-link a{color:#3498db;text-decoration:none}.login-link a:hover{text-decoration:underline}.contact-page{padding:2rem;max-width:1200px;margin:0 auto}.contact-page h1{color:#2c3e50;text-align:center;margin-bottom:1rem}.contact-page 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#3498db33}button{width:100%;padding:12px;background-color:#3498db;color:#fff;border:none;border-radius:4px;font-size:16px;cursor:pointer;transition:background-color .3s}button:hover:not(:disabled){background-color:#2980b9}button:disabled{background-color:#bdc3c7;cursor:not-allowed}.error-message{background-color:#e74c3c;color:#fff;padding:10px;border-radius:4px;margin-bottom:20px;text-align:center}.register-link{text-align:center;margin-top:20px;color:#666}.register-link a{color:#3498db;text-decoration:none}.register-link a:hover{text-decoration:underline}.book-card{border:1px solid #ddd;border-radius:8px;padding:16px;margin:8px;background:#fff;box-shadow:0 2px 4px #0000001a;transition:transform .2s;max-width:300px}.book-card:hover{transform:translateY(-2px);box-shadow:0 4px 8px #00000026}.book-image{width:100%;height:200px;display:flex;align-items:center;justify-content:center;background:#f5f5f5;border-radius:4px;margin-bottom:12px}.book-image 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#d68910}.role-badge.user{background:linear-gradient(135deg,#3498db,#2980b9);color:#fff;border:2px solid #1f618d}.role-badge:hover{transform:scale(1.05);box-shadow:0 4px 8px #0003}.moderator-dashboard{padding:20px;max-width:1200px;margin:0 auto}.moderator-dashboard h1{color:#f39c12;text-align:center;margin-bottom:30px;font-size:2.5rem}.moderator-sections{display:flex;flex-direction:column;gap:30px}.pending-books h2,.moderator-actions h2{color:#2c3e50;margin-bottom:20px;font-size:1.5rem}.no-pending{text-align:center;color:#7f8c8d;font-style:italic;padding:40px;background:#f8f9fa;border-radius:8px}.books-list{display:flex;flex-direction:column;gap:15px}.book-item{background:#fff;border-radius:8px;padding:20px;box-shadow:0 2px 8px #0000001a;display:flex;justify-content:space-between;align-items:center;border-left:4px solid #f39c12}.book-info h3{color:#2c3e50;margin-bottom:5px}.book-info p{color:#7f8c8d;margin:0}.book-actions{display:flex;gap:10px}.approve-btn,.reject-btn{padding:8px 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ease}.role-admin{background:linear-gradient(135deg,#ff6b6b,#ee5a24);min-height:100vh}.role-moderator{background:linear-gradient(135deg,#feca57,#ff9ff3);min-height:100vh}.role-user{background:linear-gradient(135deg,#74b9ff,#0984e3);min-height:100vh}.role-admin .main-content,.role-moderator .main-content,.role-user .main-content{background:#fffffff2;border-radius:20px 20px 0 0;margin:0 20px;padding:20px;box-shadow:0 -10px 30px #0000001a;min-height:calc(100vh - 200px)}.main-content{flex:1;padding:2rem;max-width:100%}.cu-wrapper{min-height:100vh;display:grid;place-items:center;background:linear-gradient(180deg,#f6f9ff,#eef3ff);padding:24px}.cu-card{width:100%;max-width:520px;background:#fff;border-radius:18px;padding:28px;border:1px solid #e7ecff}.cu-header h2{margin:0 0 4px;font-weight:700;color:#1e9de6}.cu-header p{margin:0 0 18px;color:#6b7280;font-size:.95rem}.cu-label{display:inline-block;margin-bottom:6px;font-weight:600;color:#374151}.cu-input{padding:10px 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solid #d6dbf5;transition:border-color .2s ease,box-shadow .2s ease}.cb-input:focus{border-color:#2d4ef5;box-shadow:0 0 0 4px #2d4ef526;outline:none}.cb-btn{background:linear-gradient(90deg,#2d4ef5,#6a82fb);border:none;color:#fff;border-radius:50px!important;font-weight:700;padding:12px 16px;transition:transform .06s ease,filter .2s ease}.cb-btn:hover{filter:brightness(.95)}.cb-btn:active{transform:translateY(1px)}@media (min-width: 1400px){.cb-card{transform:scale(1.05)}}.d-block{display:block}.mb-8{margin-bottom:24px}.mb-3{margin-bottom:8px}.invalid-feedback{color:#dc3545;font-size:.9rem;margin-top:4px;font-weight:500}