:root{--font-primary: "Open Sans", sans-serif;--font-logo: "Cairo", sans-serif;--space-xxs: .25rem;--space-xs: .5rem;--space-sm: .75rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-xxl: 3rem;--radius-sm: 6px;--radius-md: 12px;--radius-lg: 20px;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .3s cubic-bezier(.4, 0, .2, 1);--transition-slow: .5s cubic-bezier(.4, 0, .2, 1);--color-success: HSL(145, 63%, 42%);--color-success-bg: HSL(145, 63%, 95%);--color-error: HSL(354, 70%, 54%);--color-error-bg: HSL(354, 70%, 96%);--color-warning: HSL(45, 100%, 48%);--color-warning-bg: HSL(45, 100%, 96%);--color-info: HSL(210, 85%, 52%);--color-info-bg: HSL(210, 85%, 96%)}:root,[data-theme=light]{--bg-primary: HSL(220, 20%, 97%);--bg-secondary: HSL(0, 0%, 100%);--bg-tertiary: HSL(220, 15%, 93%);--bg-card: HSL(0, 0%, 100%);--text-primary: HSL(220, 40%, 12%);--text-secondary: HSL(220, 15%, 45%);--text-muted: HSL(220, 10%, 65%);--text-light: HSL(0, 0%, 100%);--color-primary: HSL(28, 90%, 52%);--color-primary-hover: HSL(28, 95%, 45%);--color-primary-light: HSL(28, 90%, 94%);--color-accent: HSL(255, 60%, 55%);--color-accent-hover: HSL(255, 65%, 48%);--border-color: HSL(220, 15%, 88%);--border-focus: var(--color-primary);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 18px -2px rgba(10, 20, 40, .06), 0 2px 6px -1px rgba(10, 20, 40, .04);--shadow-lg: 0 12px 30px -4px rgba(10, 20, 40, .1), 0 4px 12px -2px rgba(10, 20, 40, .06);--glass-bg: rgba(255, 255, 255, .7);--glass-border: rgba(255, 255, 255, .4);--glass-blur: 16px}[data-theme=dark]{--bg-primary: HSL(220, 30%, 5%);--bg-secondary: HSL(220, 25%, 8%);--bg-tertiary: HSL(220, 20%, 12%);--bg-card: HSL(220, 25%, 10%);--text-primary: HSL(220, 20%, 93%);--text-secondary: HSL(220, 15%, 68%);--text-muted: HSL(220, 10%, 48%);--text-light: HSL(0, 0%, 100%);--color-primary: HSL(28, 90%, 56%);--color-primary-hover: HSL(28, 95%, 48%);--color-primary-light: HSL(28, 90%, 16%);--color-accent: HSL(255, 60%, 65%);--color-accent-hover: HSL(255, 65%, 58%);--border-color: HSL(220, 20%, 16%);--border-focus: var(--color-primary);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 20px -2px rgba(0, 0, 0, .5), 0 2px 8px -1px rgba(0, 0, 0, .3);--shadow-lg: 0 16px 36px -4px rgba(0, 0, 0, .7), 0 6px 16px -2px rgba(0, 0, 0, .5);--glass-bg: rgba(15, 20, 35, .7);--glass-border: rgba(255, 255, 255, .05);--glass-blur: 16px;--color-success-bg: HSL(145, 63%, 8%);--color-error-bg: HSL(354, 70%, 9%);--color-warning-bg: HSL(45, 100%, 7%);--color-info-bg: HSL(210, 85%, 8%)}.btn-primary,.btn-secondary,.btn-icon,.clear-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-xs);font-family:var(--font-primary);font-weight:600;border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);text-decoration:none;border:none}.btn-primary{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-accent) 100%);color:var(--text-light);padding:10px 24px;font-size:15px;box-shadow:0 4px 15px #ee8e3a40}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #ee8e3a59;opacity:.95}.btn-primary:active{transform:translateY(0)}.btn-secondary{background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);padding:9px 23px;font-size:15px}.btn-secondary:hover{background-color:var(--border-color);transform:translateY(-1px)}.btn-icon{width:42px;height:42px;border-radius:50%;background-color:var(--bg-card);border:1px solid var(--border-color);color:var(--text-secondary);font-size:18px}.btn-icon:hover{color:var(--color-primary);background-color:var(--bg-tertiary);border-color:var(--color-primary-hover);transform:scale(1.05)}.form-group{margin-bottom:var(--space-lg);text-align:left}.form-group label{display:block;margin-bottom:var(--space-xs);color:var(--text-primary);font-weight:600;font-size:14px}.form-control,.filter-select,.search-input{width:100%;padding:12px 16px;border:2px solid var(--border-color);border-radius:var(--radius-md);font-size:14px;font-family:var(--font-primary);background-color:var(--bg-secondary);color:var(--text-primary);outline:none;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.form-control:focus,.filter-select:focus,.search-input:focus{border-color:var(--border-focus);box-shadow:0 0 0 4px var(--color-primary-light);background-color:var(--bg-card)}.form-control::placeholder{color:var(--text-muted)}.checkbox-group{display:flex;align-items:center;gap:var(--space-xs);margin-bottom:var(--space-lg);font-size:14px;color:var(--text-secondary)}.checkbox-group input[type=checkbox]{width:18px;height:18px;accent-color:var(--color-primary);cursor:pointer}.modern-card{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);overflow:hidden;box-shadow:var(--shadow-md);transition:transform var(--transition-normal),box-shadow var(--transition-normal),border-color var(--transition-normal);display:flex;flex-direction:column;position:relative}.modern-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:#ee8e3a4d}.card-header{position:absolute;top:12px;left:12px;right:12px;display:flex;justify-content:space-between;align-items:center;z-index:5;pointer-events:none}.stock-badge,.discount-badge{padding:4px 10px;font-size:11px;font-weight:700;border-radius:var(--radius-sm);text-transform:uppercase;letter-spacing:.5px;pointer-events:auto}.stock-badge.low-stock{background-color:var(--color-warning-bg);color:var(--color-warning);border:1px solid rgba(255,165,0,.2)}.stock-badge.in-stock{background-color:var(--color-success-bg);color:var(--color-success);border:1px solid rgba(0,128,0,.2)}.discount-badge{background-color:var(--color-error);color:var(--text-light)}.book-image-container{aspect-ratio:3 / 4;position:relative;overflow:hidden;background-color:var(--bg-tertiary);display:flex;align-items:center;justify-content:center}.book-image-container img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}.modern-card:hover .book-image-container img{transform:scale(1.08)}.book-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#0a0e1ea6;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-normal);backdrop-filter:blur(4px)}.modern-card:hover .book-overlay{opacity:1}.quick-view-btn{background:var(--bg-card);color:var(--text-primary);padding:10px 20px;border-radius:var(--radius-full);border:none;font-weight:600;cursor:pointer;box-shadow:var(--shadow-md);transform:translateY(15px);transition:transform var(--transition-normal),background-color var(--transition-fast)}.modern-card:hover .quick-view-btn{transform:translateY(0)}.quick-view-btn:hover{background-color:var(--color-primary);color:var(--text-light)}.book-info{padding:var(--space-md);display:flex;flex-direction:column;flex-grow:1}.category-tag{font-size:11px;font-weight:700;color:var(--color-primary);text-transform:uppercase;letter-spacing:1px;margin-bottom:var(--space-xxs)}.book-title{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:4px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;height:44px}.book-author{font-size:13px;color:var(--text-secondary);margin-bottom:var(--space-xs);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.rating-container{display:flex;align-items:center;gap:var(--space-xs);margin-bottom:var(--space-sm)}.stars{color:#ffb800;font-size:12px}.rating-text{font-size:12px;font-weight:600;color:var(--text-secondary)}.book-meta{display:flex;gap:var(--space-xs);font-size:11px;color:var(--text-muted);margin-bottom:var(--space-sm);flex-wrap:wrap}.price-container{display:flex;align-items:baseline;gap:var(--space-xs);margin-bottom:var(--space-sm);margin-top:auto}.original-price{font-size:13px;text-decoration:line-through;color:var(--text-muted)}.current-price{font-size:18px;font-weight:800;color:var(--color-primary)}.stock-info{font-size:12px;color:var(--text-muted);margin-bottom:var(--space-md)}.stock-count.low{color:var(--color-error);font-weight:600}.card-actions{display:flex;gap:var(--space-xs);margin-top:auto}.add-to-cart-btn{flex-grow:1;background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);padding:10px;border-radius:var(--radius-md);font-weight:600;font-size:13px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:all var(--transition-fast)}.add-to-cart-btn:hover{background:var(--color-primary);color:var(--text-light);border-color:var(--color-primary)}.wishlist-btn,.remove-wishlist-btn{width:38px;height:38px;border-radius:var(--radius-md);background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);pointer-events:auto}.wishlist-btn:hover{background:var(--color-error-bg);color:var(--color-error);border-color:#f003}.wishlist-btn i.fas{color:var(--color-error)}.remove-wishlist-btn{background:#ffffffe6;color:var(--color-error);border:none;box-shadow:var(--shadow-sm)}.remove-wishlist-btn:hover{background:var(--color-error);color:var(--text-light);transform:scale(1.05)}.filter-container{margin-bottom:var(--space-xl)}.filter-controls{display:flex;flex-wrap:wrap;gap:var(--space-md);align-items:center;background-color:var(--bg-secondary);padding:var(--space-md);border-radius:var(--radius-md);border:1px solid var(--border-color);box-shadow:var(--shadow-sm)}.search-filter{flex-grow:2;min-width:250px;position:relative}.search-input{padding-left:42px}.search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-muted)}.filter-select{flex-grow:1;min-width:150px;cursor:pointer}.clear-btn{background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);padding:11px 20px;font-size:14px}.clear-btn:hover{background-color:var(--border-color);color:var(--color-error)}.skeleton{animation:skeleton-loading 1.5s infinite linear;background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--border-color) 37%,var(--bg-tertiary) 63%);background-size:400% 100%}@keyframes skeleton-loading{0%{background-position:100% 50%}to{background-position:0 50%}}.skeleton-image{aspect-ratio:3/4;width:100%;border-radius:var(--radius-lg) var(--radius-lg) 0 0}.skeleton-title{height:20px;width:80%;border-radius:var(--radius-sm);margin-bottom:10px}.skeleton-author{height:14px;width:50%;border-radius:var(--radius-sm);margin-bottom:15px}.skeleton-price{height:22px;width:30%;border-radius:var(--radius-sm);margin-bottom:15px}.skeleton-button{height:38px;width:100%;border-radius:var(--radius-md)}.empty-state,.no-results,.error-message{grid-column:1 / -1;text-align:center;padding:var(--space-xxl) var(--space-lg);background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);max-width:500px;margin:var(--space-xl) auto;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-md)}.empty-state i,.no-results i,.error-message i{font-size:48px;color:var(--text-muted)}.empty-state h3,.no-results h3,.error-message h3{font-size:20px;font-weight:700;color:var(--text-primary);margin:0}.empty-state p,.no-results p,.error-message p{color:var(--text-secondary);font-size:14px;margin:0}.error-message i{color:var(--color-error)}.modal-backdrop{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#0a0e1eb3;backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:5000;opacity:0;transition:opacity var(--transition-normal)}.modal-backdrop.show{opacity:1}.modal-content{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-lg);width:90%;max-width:450px;padding:var(--space-xl);text-align:center;transform:scale(.9);transition:transform var(--transition-normal)}.modal-backdrop.show .modal-content{transform:scale(1)}.modal-title{font-size:20px;font-weight:700;color:var(--text-primary);margin-bottom:var(--space-xs)}.modal-body{color:var(--text-secondary);font-size:15px;margin-bottom:var(--space-lg);line-height:1.6}.modal-actions{display:flex;gap:var(--space-md);justify-content:center}.toast-container{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;gap:12px;z-index:9999;pointer-events:none}.toast{display:flex;align-items:center;gap:var(--space-sm);background-color:var(--bg-card);color:var(--text-primary);padding:14px 20px;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);border-left:4px solid var(--text-muted);min-width:280px;max-width:400px;transform:translate(450px);opacity:0;transition:transform var(--transition-normal),opacity var(--transition-normal);pointer-events:auto}.toast.show{transform:translate(0);opacity:1}.toast.success{border-left-color:var(--color-success)}.toast.success i{color:var(--color-success)}.toast.error{border-left-color:var(--color-error)}.toast.error i{color:var(--color-error)}.toast.warning{border-left-color:var(--color-warning)}.toast.warning i{color:var(--color-warning)}.toast.info{border-left-color:var(--color-info)}.toast.info i{color:var(--color-info)}.toast i{font-size:20px;flex-shrink:0}.toast-message{font-size:14px;font-weight:500}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-primary);background-color:var(--bg-primary);color:var(--text-primary);transition:background-color var(--transition-normal),color var(--transition-normal);line-height:1.6;overflow-x:hidden}main{padding-top:80px;min-height:80vh}.header{position:fixed;top:0;left:0;right:0;z-index:1000;background-color:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm);transition:background-color var(--transition-normal),border-color var(--transition-normal)}.header-container{max-width:1400px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:16px 40px}.logo{font-size:28px;font-weight:800;color:var(--color-primary);letter-spacing:1.5px;text-transform:lowercase;font-family:var(--font-logo);text-decoration:none;transition:color var(--transition-fast)}.logo:hover{color:var(--color-primary-hover)}.nav-links{list-style:none;display:flex;gap:30px;margin:0;padding:0}.nav-links a{color:var(--text-secondary);text-decoration:none;font-size:15px;font-weight:600;text-transform:capitalize;padding:8px 16px;border-radius:var(--radius-sm);transition:all var(--transition-fast);position:relative}.nav-links a:hover{background-color:var(--color-primary-light);color:var(--color-primary)}.nav-links a:after{content:"";position:absolute;bottom:-4px;left:50%;transform:translate(-50%);width:0;height:2px;background-color:var(--color-primary);transition:width var(--transition-fast)}.nav-links a:hover:after{width:60%}.header-actions{display:flex;align-items:center;gap:20px}.theme-toggle-btn{width:38px;height:38px;border-radius:50%;background-color:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:15px;transition:all var(--transition-fast)}.theme-toggle-btn:hover{background-color:var(--border-color);color:var(--color-primary);transform:scale(1.05)}.cart-icon{position:relative;cursor:pointer;padding:8px;color:var(--text-primary);transition:all var(--transition-fast)}.cart-icon:hover{color:var(--color-primary);transform:scale(1.05)}.cart-icon i{font-size:20px}.cart-count{position:absolute;top:0;right:-2px;background-color:var(--color-error);color:var(--text-light);font-size:10px;font-weight:800;padding:2px 6px;border-radius:var(--radius-full);min-width:18px;height:18px;display:flex;align-items:center;justify-content:center}.auth-area{display:flex;align-items:center;gap:var(--space-sm)}.auth-area .signup-btn{border:1.5px solid var(--color-primary);color:var(--color-primary);background-color:transparent;padding:8px 20px;border-radius:var(--radius-full);font-size:14px;font-weight:700;cursor:pointer;text-decoration:none;transition:all var(--transition-fast);display:inline-flex;align-items:center;justify-content:center}.auth-area .signup-btn:hover{background-color:var(--color-primary);color:var(--text-light);transform:translateY(-1px)}.auth-area .login-btn{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-accent) 100%);color:var(--text-light);padding:9.5px 22px;border-radius:var(--radius-full);font-size:14px;font-weight:700;border:none;cursor:pointer;text-decoration:none;transition:all var(--transition-fast);display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm)}.auth-area .login-btn:hover{transform:translateY(-1px);opacity:.95;box-shadow:0 4px 10px #ee8e3a4d}.user-menu{display:flex;align-items:center;gap:12px}.profile-btn{padding:8px 16px;border:none;border-radius:var(--radius-full);cursor:pointer;font-size:14px;font-weight:600;background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-accent) 100%);color:var(--text-light);display:flex;align-items:center;gap:8px;box-shadow:var(--shadow-sm);transition:transform var(--transition-fast),opacity var(--transition-fast)}.profile-btn:hover{transform:translateY(-1px);opacity:.95}.logout-btn{padding:8px 16px;border:1px solid var(--border-color);border-radius:var(--radius-full);cursor:pointer;font-size:14px;font-weight:600;background-color:var(--bg-tertiary);color:var(--text-secondary);display:flex;align-items:center;gap:6px;transition:all var(--transition-fast)}.logout-btn:hover{background-color:var(--border-color);color:var(--color-error)}.hamburger-btn{display:none;flex-direction:column;justify-content:center;gap:5px;background:none;border:none;cursor:pointer;padding:6px;z-index:1100}.hamburger-btn span{display:block;width:22px;height:2px;background-color:var(--text-primary);border-radius:var(--radius-full);transition:all var(--transition-fast)}.hamburger-btn.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger-btn.open span:nth-child(2){opacity:0}.hamburger-btn.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.landing-page{min-height:calc(100vh - 80px);background:linear-gradient(#0a0e1e66,#0a0e1e80),url(/assets/landing-1-B5e4_7Z7.jpg) center/cover no-repeat;display:flex;align-items:center;justify-content:center;position:relative;border-radius:0 0 var(--radius-lg) var(--radius-lg);overflow:hidden;transition:background-image 1.2s ease-in-out}.landing-page .overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at center,#0f142380,#0a0c16d9);z-index:1}.intro-text{position:relative;z-index:2;text-align:center;color:var(--text-light);max-width:850px;padding:40px 24px;animation:fadeInUp .8s cubic-bezier(.4,0,.2,1)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.intro-text h1{font-size:3.5rem;margin-bottom:20px;font-weight:800;line-height:1.25;font-family:var(--font-logo);text-shadow:0 4px 12px rgba(0,0,0,.5);background:linear-gradient(135deg,#fff 40%,var(--color-primary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.intro-text p{font-size:1.25rem;line-height:1.7;margin-bottom:40px;color:#ffffffd9;text-shadow:0 2px 4px rgba(0,0,0,.4)}.explore-btn{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-accent) 100%);color:var(--text-light);padding:16px 44px;font-size:16px;font-weight:700;border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);text-transform:uppercase;letter-spacing:1px;border:none;box-shadow:0 4px 20px #ee8e3a66}.explore-btn:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 8px 25px #ee8e3a99;opacity:.95}.about-us{padding:60px 40px;background-color:var(--bg-secondary);color:var(--text-secondary);max-width:1200px;margin:80px auto;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--border-color)}.about-us h2{font-size:2.2rem;font-weight:800;color:var(--text-primary);text-align:center;margin-bottom:16px}.about-us p{font-size:1.1rem;line-height:1.8;text-align:center;max-width:800px;margin:0 auto 30px}.about-us h3{font-size:1.6rem;font-weight:700;color:var(--text-primary);text-align:center;margin-top:40px;margin-bottom:16px}.about-us .values{margin-top:30px}.values ul{list-style:none;display:flex;flex-direction:column;gap:16px;max-width:600px;margin:20px auto 0}.values li{font-size:1.1rem;padding-left:32px;position:relative}.values li:before{content:"✓";position:absolute;left:0;color:var(--color-primary);font-weight:800;font-size:1.2rem}.quote-container{display:flex;align-items:center;justify-content:center;gap:40px;padding:50px;background-color:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:var(--shadow-md);max-width:1200px;margin:80px auto;border-radius:var(--radius-lg)}.author-img{width:150px;height:150px;border-radius:50%;object-fit:cover;border:4px solid var(--color-primary);box-shadow:var(--shadow-sm)}.quote-box{max-width:700px}.quote{font-size:1.25rem;font-style:italic;color:var(--text-primary);line-height:1.7;margin-bottom:12px}.author{font-weight:700;font-size:1.1rem;color:var(--color-primary)}.carousel-container{position:relative;max-width:1400px;margin:80px auto;padding:0 40px}.carousel-container .title{font-size:2.2rem;text-align:center;color:var(--text-primary);margin-bottom:40px;font-weight:800;position:relative}.carousel-container .title:after{content:"";position:absolute;bottom:-10px;left:50%;transform:translate(-50%);width:80px;height:3px;background-color:var(--color-primary);border-radius:var(--radius-full)}.bestseller{display:flex;gap:24px;overflow-x:auto;scroll-behavior:smooth;padding:20px 4px;scrollbar-width:none}.bestseller::-webkit-scrollbar{display:none}.bestseller .card{min-width:250px;max-width:250px;flex-shrink:0}.arrow{position:absolute;top:55%;transform:translateY(-50%);background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color);box-shadow:var(--shadow-md);width:48px;height:48px;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;border-radius:50%;transition:all var(--transition-fast);z-index:10}.arrow:hover{background-color:var(--color-primary);color:var(--text-light);border-color:var(--color-primary);transform:translateY(-50%) scale(1.08)}.arrow.left{left:8px}.arrow.right{right:8px}.featured-categories{max-width:1400px;margin:80px auto;padding:0 40px}.featured-categories .title{font-size:2.2rem;text-align:center;color:var(--text-primary);margin-bottom:50px;font-weight:800;position:relative}.featured-categories .title:after{content:"";position:absolute;bottom:-10px;left:50%;transform:translate(-50%);width:80px;height:3px;background-color:var(--color-primary);border-radius:var(--radius-full)}.categories-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px}.category-card{background-color:var(--bg-card);border-radius:var(--radius-lg);padding:36px 24px;text-align:center;transition:all var(--transition-normal);cursor:pointer;border:1px solid var(--border-color);box-shadow:var(--shadow-md)}.category-card:hover{transform:translateY(-6px);border-color:#ee8e3a4d;box-shadow:var(--shadow-lg)}.category-icon{width:64px;height:64px;background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-accent) 100%);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:28px;color:var(--text-light);box-shadow:var(--shadow-sm);transition:transform var(--transition-normal)}.category-card:hover .category-icon{transform:scale(1.1) rotate(5deg)}.category-card h3{font-size:20px;color:var(--text-primary);margin-bottom:10px;font-weight:700}.category-card p{font-size:14px;color:var(--text-secondary);margin-bottom:16px;line-height:1.6}.books-count{display:inline-block;background-color:var(--color-primary-light);color:var(--color-primary);padding:6px 16px;border-radius:var(--radius-full);font-size:12px;font-weight:700}.newsletter-section{padding:60px 40px;margin:80px 0 0;background-color:var(--bg-secondary);border-top:1px solid var(--border-color)}.newsletter-container{max-width:800px;margin:0 auto}.newsletter-content{text-align:center}.newsletter-content i.fa-envelope-open-text{font-size:48px;color:var(--color-primary);margin-bottom:20px}.newsletter-content h2{font-size:2.2rem;color:var(--text-primary);margin-bottom:12px;font-weight:800}.newsletter-content p{font-size:1.1rem;color:var(--text-secondary);margin-bottom:30px}.newsletter-form{display:flex;gap:16px;max-width:550px;margin:0 auto 30px}.newsletter-input{flex:1}.newsletter-btn{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-accent) 100%);color:var(--text-light);border:none;padding:12px 30px;border-radius:var(--radius-md);cursor:pointer;font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px;transition:all var(--transition-fast);white-space:nowrap;box-shadow:var(--shadow-sm)}.newsletter-btn:hover{transform:translateY(-1px);opacity:.95}.newsletter-stats{display:flex;justify-content:center;gap:32px;flex-wrap:wrap}.newsletter-stats .stat-item{color:var(--text-muted)}.footer{background-color:var(--bg-secondary);color:var(--text-secondary);padding:60px 40px 24px;border-top:1px solid var(--border-color);font-family:var(--font-primary)}.footer-container{max-width:1400px;margin:0 auto 40px;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:40px}.footer-logo{font-size:28px;font-weight:800;color:var(--color-primary);letter-spacing:1.5px;text-transform:lowercase;font-family:var(--font-logo);margin-bottom:16px}.social-links{display:flex;gap:12px}.social-links a{width:38px;height:38px;background-color:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:16px;transition:all var(--transition-fast)}.social-links a:hover{background-color:var(--color-primary);color:var(--text-light);border-color:var(--color-primary);transform:translateY(-2px)}.footer-section h4{font-size:16px;color:var(--text-primary);margin-bottom:20px;font-weight:700}.footer-section ul{list-style:none;padding:0}.footer-section ul li{margin-bottom:10px}.footer-section ul li a{color:var(--text-secondary);text-decoration:none;font-size:14px;transition:color var(--transition-fast)}.footer-section ul li a:hover{color:var(--color-primary)}.contact-info p{display:flex;align-items:center;gap:10px;color:var(--text-secondary);font-size:14px;margin-bottom:10px}.contact-info i{color:var(--color-primary);width:16px}.footer-bottom{max-width:1400px;margin:0 auto;padding-top:24px;border-top:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}.footer-bottom p{color:var(--text-muted);font-size:13px}.footer-links{display:flex;gap:12px;align-items:center}.footer-links a{color:var(--text-muted);text-decoration:none;font-size:13px;transition:color var(--transition-fast)}.footer-links a:hover{color:var(--color-primary)}.footer-links span{color:var(--border-color)}@media(max-width:992px){.header-container{padding:12px 24px}.logo{font-size:26px}.nav-links{gap:20px}.intro-text h1{font-size:2.8rem}.about-us{padding:40px 24px;margin:40px auto}}@media(max-width:768px){.hamburger-btn{display:flex}#main-nav{display:none;position:absolute;top:100%;left:0;right:0;background-color:var(--bg-secondary);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-lg);z-index:999}#main-nav.open{display:block}.nav-links{flex-direction:column;padding:16px 24px;gap:8px}.nav-links li{width:100%}.nav-links a{display:block;padding:10px 14px;border-radius:var(--radius-sm)}.nav-links a:after{display:none}.mobile-auth-links{display:flex!important;gap:10px;padding:16px 0 0;border-top:1px solid var(--border-color);margin-top:8px}.mobile-auth-links a,.mobile-auth-links button{flex:1;text-align:center;padding:10px 16px;border-radius:var(--radius-full);font-size:14px;font-weight:600;cursor:pointer;text-decoration:none;display:flex;align-items:center;justify-content:center;gap:6px}.mobile-auth-links .signup-btn{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-accent) 100%);color:var(--text-light);border:none}.mobile-auth-links .login-btn{background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.mobile-profile-btn{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-accent) 100%);color:var(--text-light);border:none}.mobile-logout-btn{background-color:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color)}.header-actions .signup-btn,.header-actions .login-btn,.header-actions .user-menu{display:none!important}.intro-text h1{font-size:2.2rem}.intro-text p{font-size:1.1rem}.quote-container{flex-direction:column;text-align:center;padding:36px 20px}.bestseller{gap:16px}.carousel-container{padding:0 20px}.carousel-container .title{font-size:1.8rem}.arrow{display:none}.featured-categories{padding:0 20px}.featured-categories .title{font-size:1.8rem}.categories-grid{gap:20px}.newsletter-section{padding:40px 20px}.newsletter-content h2{font-size:1.8rem}.newsletter-form{flex-direction:column}.footer{padding:40px 20px 20px}.footer-container{gap:24px}}@media(max-width:480px){.logo{font-size:22px}.intro-text h1{font-size:1.8rem}.intro-text p{font-size:.95rem}.explore-btn{padding:12px 32px;font-size:14px}.newsletter-content h2{font-size:1.5rem}}