:root{--primary:#4361ee;--primary-dark:#3a0ca3;--primary-darker:#2d0a6e;--secondary:#f72585;--accent:#4cc9f0;--success:#06d6a0;--warning:#ffd166;--danger:#ef476f;--dark:#0a0a1f;--dark-light:#12123a;--gray:#64748b;--text:#c8cfe0;--text-light:#8d99ae;--light:#ffffff;--border:rgba(255,255,255,.08);--radius:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:50px;--gradient-primary:linear-gradient(135deg,#4361ee,#3a0ca3);--gradient-accent:linear-gradient(135deg,#f72585,#7209b7);--gradient-success:linear-gradient(135deg,#06d6a0,#0284c7);--shadow-primary:0 5px 15px rgba(67,97,238,.25);--shadow-lg:0 8px 32px rgba(0,0,0,.25);--shadow-xl:0 12px 48px rgba(0,0,0,.3);--transition:all .3s ease}*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-gradient);color:var(--text);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}.breadcrumb-nav{background:hsla(0,0%,100%,.03);border-bottom:1px solid var(--border);padding:12px 0;font-size:.875rem}.breadcrumb-nav a{color:var(--primary)}.breadcrumb-nav a:hover{text-decoration:underline}.breadcrumb-nav .sep{color:var(--text-light);margin:0 8px}.breadcrumb-nav .cur{color:var(--text-light)}.hero{min-height:auto;padding:80px 0;position:relative;overflow:hidden;background:var(--hero-bg);text-align:center}.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;margin-bottom:15px;background:var(--hero-title-grad);-webkit-background-clip:text;-webkit-text-fill-color:rgba(0,0,0,0);background-clip:text;line-height:1.2}.hero p{font-size:1.1rem;color:var(--text-light);max-width:700px;margin:0 auto}.tool-wrapper{margin-top:0;position:relative;z-index:1;padding:40px 0}.main-nav{position:sticky;top:0;z-index:5;background:var(--nav-bg)}.royal-footer{position:relative;z-index:5}.tool-card{background:hsla(0,0%,100%,.02);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-radius:var(--radius-xl);padding:3rem 2rem;border:1px solid var(--border);box-shadow:var(--shadow-xl);position:relative;max-width:900px;margin:0 auto}.upload-zone{border:2px dashed rgba(67,97,238,.5);border-radius:var(--radius-lg);padding:4rem 2rem;text-align:center;cursor:pointer;transition:var(--transition);background:rgba(67,97,238,.05)}.upload-zone:hover,.upload-zone.dragover{border-color:var(--primary);background:rgba(67,97,238,.12)}.upload-zone .icon-circle{width:80px;height:80px;background:var(--gradient-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;color:#fff;font-size:2rem;box-shadow:0 10px 30px rgba(67,97,238,.4)}.upload-zone h3{font-size:1.5rem;margin-bottom:10px;color:var(--light);font-weight:700}.upload-zone .sub{color:var(--text-light);font-size:1rem;margin-bottom:20px}.upload-feats{display:flex;justify-content:center;flex-wrap:wrap;gap:20px;margin-bottom:25px;font-size:.9rem;color:var(--text-light)}.upload-feats span{display:flex;align-items:center;gap:8px}.container{max-width:1140px;margin:0 auto;padding:0 20px}.upload-feats i{color:var(--success)}.btn-upload{background:var(--gradient-primary);color:#fff;border:none;padding:10px 24px;border-radius:50px;font-weight:600;font-size:.9rem;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:var(--transition);box-shadow:var(--shadow-primary)}.btn-upload:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(67,97,238,.4);color:#fff}.file-info{display:none;align-items:center;gap:12px;padding:14px 18px;background:rgba(6,214,160,.08);border:1px solid var(--success);border-radius:var(--radius);margin-top:1rem}.file-info.show{display:flex;animation:slideUp .4s ease}.file-info .f-icon{width:44px;height:44px;background:var(--gradient-success);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;flex-shrink:0}.file-info .f-name{font-weight:700;color:var(--light);font-size:.9rem;word-break:break-all}.file-info .f-meta{display:flex;gap:12px;color:var(--text-light);font-size:.8rem;margin-top:2px}.progress-wrap{display:none;background:hsla(0,0%,100%,.04);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-top:1rem}.progress-wrap.show{display:block;animation:slideUp .4s ease}.progress-wrap h4{text-align:center;margin-bottom:12px;font-size:.95rem;color:var(--light)}.progress-bar-track{height:8px;background:hsla(0,0%,100%,.06);border-radius:4px;overflow:hidden;margin-bottom:12px}.progress-bar-fill{height:100%;width:0%;background:var(--gradient-primary);border-radius:4px;transition:width .3s}.progress-info{display:flex;justify-content:space-between;font-size:.85rem;color:var(--text-light)}.stats-row{display:grid;grid-template-columns:repeat(4, 1fr);gap:10px;margin-top:12px}.stat-box{background:hsla(0,0%,100%,.05);border:1px solid var(--border);color:var(--light);border-radius:10px;padding:14px;text-align:center;transition:var(--transition)}.stat-box:hover{transform:translateY(-3px);border-color:var(--primary)}.stat-box .s-icon{font-size:1.4rem;opacity:.85;margin-bottom:6px}.stat-box .s-val{font-size:1.3rem;font-weight:800;line-height:1}.stat-box .s-lbl{font-size:.7rem;opacity:.8;margin-top:3px;text-transform:uppercase;letter-spacing:.5px}.results-wrap{display:none;margin-top:1.5rem}.results-wrap.show{display:block;animation:slideUp .5s ease}.imp-note{background:hsla(0,0%,100%,.05);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:12px;margin-bottom:14px;font-weight:500;text-align:center;font-size:.88rem;display:flex;align-items:center;justify-content:center;gap:8px}.sel-controls{background:hsla(0,0%,100%,.04);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}.sel-btns{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}.sel-btn{padding:6px 11px;border:1px solid var(--border);border-radius:6px;background:hsla(0,0%,100%,.04);color:var(--text);font-weight:500;cursor:pointer;transition:var(--transition);font-size:.8rem;display:inline-flex;align-items:center;gap:5px}.sel-btn:hover{border-color:var(--primary);background:rgba(67,97,238,.1)}.sel-btn.active{background:var(--gradient-primary);color:#fff;border-color:rgba(0,0,0,0)}.sel-info{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}.sel-check{display:flex;align-items:center;gap:6px;cursor:pointer;font-weight:500;font-size:.82rem;color:var(--light)}.sel-check input[type=checkbox]{width:16px;height:16px;accent-color:var(--primary)}.sel-stats{background:hsla(0,0%,100%,.06);padding:4px 10px;border-radius:6px;font-size:.8rem}.sel-stats strong{color:var(--primary)}.filter-bar{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}.filter-tab{padding:5px 12px;border:1px solid var(--border);border-radius:20px;background:rgba(0,0,0,0);color:var(--text-light);cursor:pointer;transition:var(--transition);font-size:.78rem;font-weight:500}.filter-tab:hover{border-color:var(--primary);color:var(--primary)}.filter-tab.active{background:var(--gradient-primary);color:#fff;border-color:rgba(0,0,0,0)}.filter-tab .f-count{opacity:.6;margin-left:4px;font-size:.7rem}.sort-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}.sort-bar select{background:hsla(0,0%,100%,.06);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:5px 10px;font-size:.8rem;cursor:pointer}.sort-bar select:focus{outline:none;border-color:var(--primary)}.toggle-dup{display:flex;align-items:center;gap:6px;font-size:.78rem;color:var(--text-light);cursor:pointer;padding:4px 10px;border:1px solid var(--border);border-radius:6px;transition:var(--transition)}.toggle-dup:hover{border-color:var(--primary)}.toggle-dup.active{background:rgba(6,214,160,.1);border-color:var(--success);color:var(--success)}.toggle-dup input[type=checkbox]{width:14px;height:14px;accent-color:var(--success)}.export-settings{background:hsla(0,0%,100%,.04);border:1px solid var(--border);border-radius:var(--radius);padding:14px;margin-bottom:12px;display:none}.export-settings.show{display:block;animation:slideUp .35s ease}.export-settings h5{font-size:.85rem;color:var(--light);margin-bottom:8px}.export-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.export-group{display:flex;align-items:center;gap:6px}.export-group label{font-size:.78rem;color:var(--text-light)}.export-group select,.export-group input[type=text],.export-group input[type=range]{background:#12123a;border:1px solid hsla(0,0%,100%,.2);color:#fff;border-radius:5px;padding:4px 8px;font-size:.78rem;cursor:pointer}.export-group input[type=range]{width:80px;padding:0;accent-color:var(--primary)}.export-group .q-val{font-size:.75rem;color:var(--text-light);min-width:28px;text-align:center}.layout-opts{background:hsla(0,0%,100%,.04);border:1px solid var(--border);border-radius:var(--radius);padding:14px;margin-bottom:12px}.layout-opts h5{font-size:.85rem;color:var(--light);margin-bottom:8px}.layout-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:8px}.layout-card{display:flex;align-items:center;gap:8px;padding:10px;border:2px solid var(--border);border-radius:8px;cursor:pointer;transition:var(--transition)}.layout-card:hover{border-color:rgba(67,97,238,.3)}.layout-card.active{border-color:var(--primary);background:rgba(67,97,238,.1)}.layout-ic{width:36px;height:36px;background:hsla(0,0%,100%,.06);border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:1rem;color:var(--primary);flex-shrink:0}.layout-card.active .layout-ic{background:var(--gradient-primary);color:#fff}.layout-card h6{font-size:.8rem;color:var(--light);margin-bottom:1px}.layout-card small{font-size:.68rem;color:var(--text-light)}.dl-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0}.dl-btn{display:block;width:100%;padding:13px;font-size:.9rem;font-weight:700;color:#fff;border:none;border-radius:10px;cursor:pointer;transition:var(--transition);text-align:center;text-decoration:none}.dl-btn:hover{transform:translateY(-3px);color:#fff}.dl-btn.pdf{background:var(--gradient-primary);box-shadow:0 6px 20px rgba(67,97,238,.25)}.dl-btn.zip{background:var(--gradient-success);box-shadow:0 6px 20px rgba(6,214,160,.25)}.dl-btn small{display:block;font-size:.7rem;opacity:.8;margin-top:3px;font-weight:400}.img-gallery{display:grid;grid-template-columns:repeat(auto-fill, minmax(150px, 1fr));gap:10px}.img-card{background:hsla(0,0%,100%,.04);border:2px solid var(--border);border-radius:10px;overflow:hidden;transition:var(--transition);position:relative;cursor:pointer}.img-card:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(0,0,0,.2)}.img-card.selected{border-color:var(--primary);box-shadow:0 6px 20px rgba(67,97,238,.2)}.img-card.duplicate{opacity:.7;border-style:dashed}.img-card.duplicate::after{content:"DUPLICATE";position:absolute;top:30px;right:-22px;background:var(--warning);color:#000;font-size:.55rem;font-weight:800;padding:2px 20px;transform:rotate(45deg);letter-spacing:1px;z-index:3}.img-cb{position:absolute;top:6px;left:6px;z-index:2;width:16px;height:16px;cursor:pointer;accent-color:var(--primary)}.img-num{position:absolute;top:6px;right:6px;background:var(--primary);color:#fff;width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.65rem;font-weight:700;z-index:2}.img-cat{position:absolute;bottom:6px;left:6px;font-size:.55rem;font-weight:700;padding:2px 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var(--border);padding:8px 16px;border-radius:7px;font-weight:600;cursor:pointer;transition:var(--transition);font-size:.82rem;display:inline-flex;align-items:center;gap:5px}.btn-reset:hover{background:hsla(0,0%,100%,.12);color:#fff}.dup-summary{font-size:.78rem;color:var(--warning);text-align:center;margin:6px 0;padding:6px;background:rgba(255,209,102,.08);border-radius:6px;display:none}.dup-summary.show{display:block}.content-section{padding:40px 0}.content-card{background:hsla(0,0%,100%,.03);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem;margin-bottom:24px;backdrop-filter:blur(10px);max-width:900px;margin-left:auto;margin-right:auto}.content-card h2{font-size:1.35rem;margin-bottom:16px;color:var(--light)}.content-card .section-title{font-size:2rem;text-align:center;margin-bottom:30px;color:var(--light)}.content-card .section-subtitle{text-align:center;max-width:800px;margin:0 auto 40px;font-size:1.1rem;color:var(--text-light)}.content-card h3{font-size:1.1rem;margin-bottom:10px;color:var(--primary)}.content-card p,.content-card li{color:var(--text);margin-bottom:12px;line-height:1.8}.content-card ul{padding-left:20px}.content-card ul li{margin-bottom:6px}.usage-steps{display:grid;grid-template-columns:repeat(auto-fit, minmax(180px, 1fr));gap:16px;margin-top:20px}.usage-step{background:hsla(0,0%,100%,.04);border:1px solid var(--border);border-radius:12px;padding:1.5rem;text-align:center;transition:var(--transition)}.usage-step:hover{border-color:var(--primary);transform:translateY(-3px)}.usage-step .u-icon{width:46px;height:46px;border-radius:10px;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;margin:0 auto 10px;color:#fff;font-size:1.2rem}.usage-step h4{font-size:.9rem;color:var(--light);margin-bottom:4px}.usage-step p{font-size:.82rem;color:var(--text-light);margin:0}.case-studies 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var(--border);border-radius:10px;margin-bottom:6px;overflow:hidden;background:hsla(0,0%,100%,.03)}.faq-q{display:flex;justify-content:space-between;align-items:center;width:100%;padding:12px 16px;border:none;cursor:pointer;font-weight:600;font-size:.85rem;color:var(--light);text-align:left;transition:var(--transition);background:rgba(0,0,0,0)}.faq-q:hover{background:hsla(0,0%,100%,.06)}.faq-q i{transition:transform .3s;color:var(--primary)}.faq-item.open .faq-q i{transform:rotate(180deg)}.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}.faq-item.open .faq-a{max-height:400px}.faq-a-inner{padding:0 16px 14px;font-size:.85rem;color:var(--text-light);line-height:1.7}.feature-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:20px;margin-top:24px}.feature-card{background:hsla(0,0%,100%,.04);border:1px solid var(--border);border-radius:14px;padding:1.8rem;transition:var(--transition);display:flex;flex-direction:column}.feature-card:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,0,0,.15)}.feature-card h3{font-size:1.05rem;margin-bottom:12px;color:var(--light);display:flex;align-items:center;gap:8px;flex-shrink:0}.feature-card h3 i{font-size:1.2rem}.feature-card p{font-size:.88rem;color:var(--text-light);line-height:1.7;margin:0;flex:1}.related-tools{padding:40px 20px;background:var(--bg-body);max-width:900px;margin-left:auto;margin-right:auto}.related-tools h2{font-size:1.35rem;margin-bottom:8px;color:var(--light)}.related-tools>p{color:var(--gray);margin-bottom:18px}.related-grid{display:grid;grid-template-columns:repeat(5, 1fr);gap:14px}@media(max-width: 991px){.related-grid{grid-template-columns:repeat(3, 1fr)}}@media(max-width: 575px){.related-grid{grid-template-columns:repeat(2, 1fr)}}.related-card{background:hsla(0,0%,100%,.03);border:1px 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h4{font-size:1rem;color:var(--light);margin-bottom:4px}.privacy-note p{font-size:.85rem;color:var(--text-light);margin:0;line-height:1.6}.loading-overlay{position:fixed;inset:0;background:rgba(10,10,31,.96);display:none;align-items:center;justify-content:center;z-index:9999;backdrop-filter:blur(8px)}.loading-overlay.active{display:flex}.loader-box{text-align:center}.loader-spinner{width:56px;height:56px;border:4px solid hsla(0,0%,100%,.08);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 16px}@keyframes spin{to{transform:rotate(360deg)}}.loader-box h4{color:var(--light);margin-bottom:4px;font-size:1rem}.loader-box p{color:var(--text-light);font-size:.85rem}.loader-bar{width:180px;height:5px;background:hsla(0,0%,100%,.06);border-radius:3px;margin:12px auto 0;overflow:hidden}.loader-bar-fill{height:100%;width:30%;background:var(--gradient-primary);border-radius:3px;animation:loaderAnim 1.5s ease-in-out infinite}@keyframes loaderAnim{0%{width:15%;margin-left:0}50%{width:60%;margin-left:20%}100%{width:15%;margin-left:80%}}.custom-modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;z-index:2000;padding:1rem;backdrop-filter:blur(4px)}.custom-modal.show{display:flex}.custom-modal-content{background:var(--dark-light);border:1px solid hsla(0,0%,100%,.1);border-radius:var(--radius-lg);padding:1.5rem;max-width:480px;width:100%;max-height:80vh;overflow-y:auto;box-shadow:var(--shadow-xl)}.custom-modal-content label{color:var(--light);font-weight:600;font-size:.82rem;display:block;margin-bottom:3px}.custom-modal-content input[type=text],.custom-modal-content input[type=number]{background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.12);color:var(--light);border-radius:6px;padding:7px 10px;font-size:.82rem;width:100%}.custom-modal-content input::placeholder{color:var(--text-light)}.custom-modal-content input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(67,97,238,.2)}.custom-modal-content .ex{font-size:.75rem;color:var(--text-light);margin-top:3px}.custom-modal-content .cur-sel{background:hsla(0,0%,100%,.04);padding:7px;border-radius:6px;font-size:.8rem;color:var(--text-light);margin-top:8px}.range-row{display:flex;align-items:center;gap:6px;margin-bottom:5px}.range-row input{width:65px;text-align:center}.range-row span{color:var(--text-light)}.modal-ftr{display:flex;justify-content:flex-end;gap:6px;margin-top:14px;flex-wrap:wrap}.modal-ftr button{padding:7px 14px;border-radius:6px;font-size:.82rem;font-weight:600;cursor:pointer;border:none;transition:var(--transition)}.modal-ftr .btn-cancel{background:hsla(0,0%,100%,.08);color:var(--text)}.modal-ftr .btn-cancel:hover{background:hsla(0,0%,100%,.12)}.modal-ftr .btn-apply{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-primary)}.modal-ftr .btn-apply:hover{transform:translateY(-2px)}.toast{position:fixed;top:20px;right:20px;z-index:10000;min-width:280px;max-width:400px;background:var(--dark-light);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;box-shadow:var(--shadow-xl);display:flex;align-items:center;gap:8px;animation:slideIn .4s ease;border-left:4px solid var(--success);color:var(--light);font-size:.82rem}.toast.error{border-left-color:var(--danger)}.toast.info{border-left-color:var(--primary)}.toast.warning{border-left-color:var(--warning)}.toast i{font-size:1.1rem;flex-shrink:0}.toast.error i{color:var(--danger)}.toast.info i{color:var(--primary)}.toast.warning i{color:var(--warning)}@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.btt{position:fixed;bottom:24px;right:24px;width:44px;height:44px;background:var(--gradient-primary);color:#fff;border:none;border-radius:50%;font-size:1rem;cursor:pointer;z-index:999;display:none;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);transition:var(--transition)}.btt.show{display:flex}.btt:hover{transform:translateY(-3px);background:var(--gradient-accent)}@media(max-width: 768px){.tool-card{padding:1.2rem}.stats-row{grid-template-columns:1fr 1fr}.dl-row{grid-template-columns:1fr}.layout-grid{grid-template-columns:1fr}}@media(max-width: 480px){.img-gallery{grid-template-columns:repeat(2, 1fr);gap:6px}.content-card{padding:1.2rem}}#app-content[data-theme=dark]{--bg-gradient:linear-gradient(160deg,#0a0a1f 0%,#12123a 50%,#0a0a1f 100%);--bg-body:#0a0a1f;--bg-card:rgba(255,255,255,.02);--nav-bg:#0a0a1f;--text:#c8cfe0;--text-light:#8d99ae;--border:rgba(255,255,255,.08);--shadow:0 4px 24px rgba(0,0,0,.3);--primary-light:rgba(67,97,238,.12);--dark:#f1f5f9;--gray:#94a3b8;--light:#ffffff;--shadow-primary:0 5px 15px rgba(67,97,238,.25);--shadow-lg:0 8px 32px rgba(0,0,0,.25);--shadow-xl:0 12px 48px rgba(0,0,0,.3);--gradient-primary:linear-gradient(135deg,#4361ee,#3a0ca3);--gradient-accent:linear-gradient(135deg,#f72585,#7209b7);--gradient-success:linear-gradient(135deg,#06d6a0,#0284c7);--hero-bg:#0a0a1f;--hero-title-grad:linear-gradient(135deg,#fff 30%,var(--accent) 100%)}#app-content[data-theme=light]{--bg-gradient:linear-gradient(160deg,#f0f4ff 0%,#e8ffe8 40%,#f5f0ff 100%);--bg-body:#f8fafc;--bg-card:#ffffff;--nav-bg:#ffffff;--text:#475569;--text-light:#94a3b8;--border:#e2e8f0;--shadow:0 4px 24px rgba(67,97,238,0.08);--primary-light:rgba(67,97,238,0.08);--dark:#1a1a2e;--gray:#475569;--light:#1e293b;--shadow-primary:0 5px 15px rgba(67,97,238,.18);--shadow-lg:0 8px 32px rgba(0,0,0,.1);--shadow-xl:0 12px 48px rgba(0,0,0,.12);--gradient-primary:linear-gradient(135deg,#4361ee,#3a0ca3);--gradient-accent:linear-gradient(135deg,#f72585,#7209b7);--gradient-success:linear-gradient(135deg,#06d6a0,#0284c7);--hero-bg:#f8fafc;--hero-title-grad:linear-gradient(135deg,#1e293b 30%,var(--accent) 100%)}#floatThemeToggle{position:fixed;top:100px;right:20px;width:48px;height:48px;background:var(--bg-card);border:1px solid var(--border);border-radius:50%;cursor:pointer;z-index:1000;display:flex;align-items:center;justify-content:center;color:var(--text);font-size:1.2rem;box-shadow:var(--shadow);transition:all .3s}#floatThemeToggle:hover{background:var(--primary);color:#fff;border-color:var(--primary)}#backToTop{position:fixed;bottom:30px;right:20px;width:48px;height:48px;background:var(--primary);border:none;border-radius:50%;cursor:pointer;z-index:1000;display:none;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;box-shadow:0 10px 20px rgba(0,0,0,.2);transition:all .3s}#backToTop:hover{background:var(--primary-dark);transform:translateY(-3px)}#backToTop.show{display:flex}