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#000000}.canvas-viewport{flex:1;display:flex;align-items:center;justify-content:center;overflow:auto}.card-canvas{width:100%;max-width:580px;min-height:400px;padding:var(--space-xl) var(--space-md);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;box-shadow:var(--shadow-l2)}@media (min-width: 480px){.card-canvas{padding:var(--space-3xl)}}.glow-elements{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:1;display:none}.glow-circle{position:absolute;border-radius:var(--radius-full);filter:blur(70px);opacity:.35;animation:floatMovement 45s infinite ease-in-out}.glow-cyan{width:250px;height:250px;background-color:#00dfd8;top:-5%;left:-5%}.glow-violet{width:280px;height:280px;background-color:#7928ca;bottom:-10%;right:-5%;animation-delay:-10s}.glow-pink{width:220px;height:220px;background-color:#ff0080;top:40%;left:40%;animation-delay:-20s}@keyframes floatMovement{0%{transform:translate(0) scale(1)}50%{transform:translate(40px,-20px) scale(1.05)}to{transform:translate(0) scale(1)}}.card-canvas.theme-aura-mesh{background-color:#fcfcfc;background-image:radial-gradient(at 0% 0%,rgba(0,124,240,.04) 0%,transparent 50%),radial-gradient(at 100% 0%,rgba(121,40,202,.04) 0%,transparent 50%),radial-gradient(at 50% 100%,rgba(255,0,128,.03) 0%,transparent 50%);--bg-canvas: #ffffff;--bg-page: #ffffff;--ds-gray-50: #fafafa;--ds-gray-100: #f5f5f5;--ds-gray-200: #ebebeb;--ds-gray-300: #e5e5e5;--ds-gray-400: #a1a1a1;--ds-gray-500: #888888;--ds-gray-700: #4d4d4d;--ds-gray-900: #2d2d2d;--ds-gray-1000: #171717;--text-ink: #171717;--text-body: #4d4d4d;--text-mute: #888888;--border-hairline: #ebebeb}.card-canvas.theme-aura-mesh .glow-elements{display:block}.card-canvas.theme-aura-mesh .study-card{background:#ffffffd9;backdrop-filter:blur(12px) saturate(180%);-webkit-backdrop-filter:blur(12px) saturate(180%);border:1px solid rgba(255,255,255,.4);box-shadow:0 8px 32px #0000000a}.card-canvas.theme-cyber-midnight{background:linear-gradient(135deg,#090d16,#171725)}.card-canvas.theme-cyber-midnight .study-card{background:#171725b3;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.06);box-shadow:0 15px 35px #0000004d;--text-ink: #f8fafc;--text-body: #94a3b8;--text-mute: #475569;--border-hairline: rgba(255,255,255,.08)}.card-canvas.theme-sunset-glow{background:linear-gradient(135deg,#ffc371,#ff5f6d);--bg-canvas: #ffffff;--bg-page: #ffffff;--ds-gray-50: #fafafa;--ds-gray-100: #f5f5f5;--ds-gray-200: #ebebeb;--ds-gray-300: #e5e5e5;--ds-gray-400: #a1a1a1;--ds-gray-500: #888888;--ds-gray-700: #4d4d4d;--ds-gray-900: #2d2d2d;--ds-gray-1000: #171717;--text-ink: #171717;--text-body: #4d4d4d;--text-mute: #888888;--border-hairline: #ebebeb}.card-canvas.theme-sunset-glow .study-card{background:#fffffff0;border:1px solid rgba(255,255,255,.5);box-shadow:0 10px 30px #6414141a}.card-canvas.theme-minimal-grid{background-color:#fff;background-image:radial-gradient(rgba(0,0,0,.05) 1.5px,transparent 0%);background-size:16px 16px;--bg-canvas: #ffffff;--bg-page: #ffffff;--ds-gray-50: #fafafa;--ds-gray-100: #f5f5f5;--ds-gray-200: #ebebeb;--ds-gray-300: #e5e5e5;--ds-gray-400: #a1a1a1;--ds-gray-500: #888888;--ds-gray-700: #4d4d4d;--ds-gray-900: #2d2d2d;--ds-gray-1000: #171717;--text-ink: #171717;--text-body: #171717;--text-mute: #777777;--border-hairline: #171717}.card-canvas.theme-minimal-grid .study-card{background:#fff;border:1px solid var(--ds-gray-1000);box-shadow:4px 4px 0 var(--ds-gray-1000);border-radius:var(--radius-xs)}.study-card{width:100%;padding:var(--space-lg);border-radius:var(--radius-md);z-index:5;transition:all var(--transition-normal)}@media (max-width: 380px){.study-card{padding:var(--space-md)}.card-main-title{font-size:14px}.bullet-text,.takeaway-text,.analogy-body,.eli5-explanation,.funfact-body,.flashcard-text{font-size:12px}}.card-empty-state{display:flex;flex-direction:column;align-items:center;text-align:center;padding:var(--space-xl) 0;color:var(--text-body)}.empty-icon-wrapper{width:44px;height:44px;border-radius:50%;background:var(--ds-gray-100);color:var(--text-mute);display:flex;align-items:center;justify-content:center;margin-bottom:var(--space-md)}.card-empty-state h3{font-size:15px;font-weight:600;color:var(--text-ink);margin-bottom:var(--space-xs)}.card-empty-state p{font-size:12.5px;color:var(--text-body);line-height:1.5;max-width:320px}.card-loading-state{display:flex;flex-direction:column;gap:var(--space-md)}.shimmer-header{margin-bottom:var(--space-sm)}.shimmer-bar{background:linear-gradient(90deg,#f2f2f2 25%,#e6e6e6 37%,#f2f2f2 63%);background-size:400% 100%;animation:shimmerAnim 1.4s ease infinite;border-radius:var(--radius-xs)}.shimmer-title{width:70%;height:18px;margin-bottom:var(--space-xs)}.shimmer-meta{width:30%;height:12px}.shimmer-item{display:flex;flex-direction:column;gap:var(--space-xxs)}.shimmer-label{width:25%;height:12px}.shimmer-content{width:100%;height:32px}.shimmer-box{width:100%;height:50px}@keyframes shimmerAnim{0%{background-position:100% 50%}to{background-position:0% 50%}}.card-header{border-bottom:1px solid var(--border-hairline);padding-bottom:var(--space-md);margin-bottom:var(--space-lg);display:flex;flex-direction:column;gap:var(--space-xxs)}.card-header-top{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-sm)}.card-main-title{font-size:16px;font-weight:600;letter-spacing:-.4px;color:var(--text-ink);line-height:1.3}.mode-badge{font-family:var(--font-mono);font-size:9px;font-weight:500;text-transform:uppercase;letter-spacing:.5px;padding:2px var(--space-xs);border-radius:var(--radius-pill);background-color:var(--ds-gray-100);border:1px solid var(--border-hairline);color:var(--text-body)}.card-canvas.theme-cyber-midnight .mode-badge{background-color:#ffffff14;border-color:#ffffff1a;color:#f8fafc}.card-canvas.theme-cyber-midnight .takeaway-container{background-color:#ffffff05;border-left-color:#fff3}.card-subheader{font-family:var(--font-mono);font-size:10px;color:var(--text-mute)}.card-body{display:flex;flex-direction:column;gap:var(--space-md)}.summary-bullets-list{display:flex;flex-direction:column;gap:var(--space-sm);list-style:none}.summary-bullet-item{display:flex;flex-direction:column}.bullet-label{font-size:13px;font-weight:600;color:var(--text-ink);display:flex;align-items:center;gap:var(--space-xs)}.bullet-label:before{content:"";display:inline-block;width:4px;height:4px;border-radius:50%;background-color:var(--text-ink)}.bullet-text{font-size:12.5px;line-height:1.45;color:var(--text-body);padding-left:var(--space-md)}.takeaway-container{margin-top:var(--space-sm);padding:var(--space-md);background-color:var(--ds-gray-50);border-left:2px solid var(--text-ink)}.takeaway-title{font-size:9.5px;font-family:var(--font-mono);text-transform:uppercase;color:var(--text-mute);margin-bottom:2px}.takeaway-text{font-size:12.5px;font-style:italic;line-height:1.4;color:var(--text-body)}.eli5-analogy-box{padding:var(--space-md);background-color:#0070f308;border:1px dashed rgba(0,112,243,.2);border-radius:var(--radius-md)}.analogy-header{display:flex;align-items:center;gap:var(--space-xs);font-size:12px;font-weight:600;color:var(--ds-blue);margin-bottom:var(--space-xs)}.analogy-body{font-size:12.5px;line-height:1.45;color:var(--text-body)}.eli5-explanation{font-size:13px;line-height:1.5;color:var(--text-body)}.eli5-funfact{padding:var(--space-md);background-color:var(--ds-gray-50);border:1px solid var(--border-hairline);border-radius:var(--radius-md);font-size:11.5px}.card-canvas.theme-cyber-midnight .eli5-funfact{background-color:#ffffff05}.funfact-title{font-family:var(--font-mono);font-weight:600;color:var(--text-ink);margin-bottom:var(--space-xxs)}.funfact-body{line-height:1.4}.flashcards-grid{display:flex;flex-direction:column;gap:var(--space-xs);perspective:1000px}.flashcard-item{width:100%;height:80px;cursor:pointer}.flashcard-inner{position:relative;width:100%;height:100%;transition:transform .6s cubic-bezier(.4,0,.2,1);transform-style:preserve-3d;-webkit-transform-style:preserve-3d}.flashcard-item.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{position:absolute;top:0;left:0;width:100%;height:100%;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);display:flex;flex-direction:column;justify-content:center;border:1px solid var(--border-hairline);box-shadow:var(--shadow-l1)}.flashcard-front{background-color:var(--bg-canvas);color:var(--text-ink);z-index:2;transition:opacity .3s ease,visibility .3s ease}.flashcard-item.flipped .flashcard-front{opacity:0;visibility:hidden;pointer-events:none}.card-canvas.theme-cyber-midnight .flashcard-front{background-color:#171725e6}.flashcard-back{background-color:var(--ds-gray-50);color:var(--text-body);transform:rotateY(180deg);z-index:1;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}.flashcard-item.flipped .flashcard-back{opacity:1;visibility:visible;z-index:2}.card-canvas.theme-cyber-midnight .flashcard-back{background-color:#1e293bf2}.flashcard-role-label{font-family:var(--font-mono);font-size:8.5px;font-weight:500;text-transform:uppercase;color:var(--text-mute);margin-bottom:2px}.flashcard-text{font-size:12.5px;font-weight:500;line-height:1.35}.flip-hint{font-family:var(--font-mono);font-size:8px;color:var(--text-mute);position:absolute;bottom:4px;right:var(--space-md);text-transform:uppercase}.card-footer{border-top:1px solid var(--border-hairline);padding-top:var(--space-sm);margin-top:var(--space-lg);display:flex;align-items:center;justify-content:space-between;font-family:var(--font-mono);font-size:9.5px;color:var(--text-mute)}.library-page{background-color:var(--bg-page)}.library-header-row{display:flex;flex-direction:column;align-items:flex-start;gap:var(--space-sm)}@media (min-width: 480px){.library-header-row{flex-direction:row;align-items:center;justify-content:space-between;gap:0}}.library-workspace{margin-top:var(--space-xl)}.library-grid{display:grid;grid-template-columns:1fr;gap:var(--space-md)}@media (min-width: 640px){.library-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1024px){.library-grid{grid-template-columns:repeat(3,1fr)}}.library-item-card{background-color:#fff;border:1px solid var(--border-hairline);border-radius:var(--radius-lg);padding:var(--space-lg);display:flex;flex-direction:column;justify-content:space-between;min-height:160px;transition:all var(--transition-normal);box-shadow:var(--shadow-l1);position:relative;cursor:pointer}.library-item-card:hover{border-color:var(--ds-gray-400);box-shadow:var(--shadow-l3);transform:translateY(-2px)}.library-card-top{display:flex;flex-direction:column;gap:var(--space-xxs)}.library-card-badge{align-self:flex-start;font-family:var(--font-mono);font-size:9px;font-weight:500;text-transform:uppercase;color:var(--ds-blue);background-color:var(--ds-blue-soft);padding:2px var(--space-xs);border-radius:var(--radius-pill);margin-bottom:var(--space-xxs)}.library-card-title{font-size:15px;font-weight:600;color:var(--text-ink);line-height:1.3;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical}.library-card-meta{font-family:var(--font-mono);font-size:10px;color:var(--text-mute)}.library-card-actions{display:flex;align-items:center;justify-content:flex-end;gap:var(--space-xs);margin-top:var(--space-md);border-top:1px solid var(--border-hairline);padding-top:var(--space-sm);opacity:.7;transition:opacity var(--transition-fast)}.library-item-card:hover .library-card-actions{opacity:1}.lib-action-btn{width:32px;height:32px;border-radius:50%;border:1px solid rgba(0,0,0,.08);background-color:#ffffff73;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:var(--text-body);display:flex;align-items:center;justify-content:center;cursor:pointer}.lib-action-btn:hover{background-color:#171717d9;color:#fff;border-color:#171717d9}.lib-action-btn.delete:hover{background-color:#ee000026;color:var(--ds-red-deep);border-color:#ee000059}.history-empty{grid-column:1 / -1;text-align:center;padding:var(--space-4xl) 0;border:1px dashed var(--border-hairline);border-radius:var(--radius-lg);color:var(--text-body);display:flex;flex-direction:column;align-items:center;gap:var(--space-xs)}.history-empty svg{color:var(--text-mute);margin-bottom:var(--space-xs)}.history-empty h3{font-size:15px;font-weight:600;color:var(--text-ink)}.history-empty p{font-size:12.5px;color:var(--text-mute);max-width:300px;line-height:1.5}.settings-page{background-color:var(--ds-gray-50)}.settings-grid{display:grid;grid-template-columns:1fr;gap:var(--space-lg)}@media (min-width: 768px){.settings-grid{grid-template-columns:repeat(2,1fr)}}.settings-card{background-color:#fff;border:1px solid var(--border-hairline);border-radius:var(--radius-lg);padding:var(--space-xl);box-shadow:var(--shadow-l1)}@media (min-width: 768px){.span-2{grid-column:span 2}}.flex-col{display:flex;flex-direction:column;gap:var(--space-md)}.settings-card-title{font-size:16px;font-weight:600;color:var(--text-ink)}.settings-card-text{font-size:13px;line-height:1.6;color:var(--text-body)}.settings-card.api-card-highlight{position:relative;background:linear-gradient(135deg,#ffffff 0%,var(--ds-gray-50) 100%);border:2px solid var(--ds-gray-1000);box-shadow:var(--shadow-l2);overflow:hidden;transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.settings-card.api-card-highlight:hover{transform:translateY(-2px);box-shadow:var(--shadow-l3)}.settings-card.api-card-highlight:before{content:"";position:absolute;top:0;left:0;width:5px;height:100%;background:linear-gradient(180deg,var(--ds-blue) 0%,#d946ef 100%)}.api-status-badge{display:inline-flex;align-items:center;gap:var(--space-xs);padding:6px var(--space-md);border-radius:var(--radius-pill);background-color:var(--ds-gray-100);border:1.5px solid var(--ds-gray-300);width:fit-content;font-size:11px;font-weight:600;font-family:var(--font-mono);color:var(--text-ink);margin-bottom:var(--space-xs);box-shadow:inset 0 1px 2px #00000008}.status-dot{width:8px;height:8px;border-radius:50%;display:inline-block;position:relative}.dot-red{background-color:var(--ds-red);box-shadow:0 0 #ee000073;animation:statusPulseRed 2s infinite}.dot-green{background-color:#00ca5a;box-shadow:0 0 #00ca5a73;animation:statusPulseGreen 2s infinite}@keyframes statusPulseRed{0%{transform:scale(.95);box-shadow:0 0 #ee0000b3}70%{transform:scale(1);box-shadow:0 0 0 6px #e000}to{transform:scale(.95);box-shadow:0 0 #e000}}@keyframes statusPulseGreen{0%{transform:scale(.95);box-shadow:0 0 #00ca5ab3}70%{transform:scale(1);box-shadow:0 0 0 6px #00ca5a00}to{transform:scale(.95);box-shadow:0 0 #00ca5a00}}.form-input,.form-select{width:100%;height:42px;padding:0 var(--space-md);border:2px solid var(--ds-gray-300);border-radius:10px;font-family:var(--font-sans);font-size:13.5px;background-color:#fff;color:var(--text-ink);transition:all var(--transition-fast)}.form-input:focus,.form-select:focus{border-color:var(--text-ink);box-shadow:0 0 0 4px #0000000d;outline:none}.input-with-icon{position:relative;width:100%}.input-with-icon input{padding-right:40px;height:44px;font-family:var(--font-mono);font-size:13px;letter-spacing:.05em;border:2px solid var(--ds-gray-300);border-radius:10px;background-color:#fff;color:var(--text-ink);transition:all var(--transition-fast);width:100%}.input-with-icon input:focus{border-color:var(--ds-gray-1000);box-shadow:0 0 0 4px #0000000f;outline:none}.input-with-currency{position:relative;width:100%}.input-with-currency .currency-symbol{position:absolute;left:var(--space-md);top:50%;transform:translateY(-50%);color:var(--text-mute);font-weight:600;font-size:14px}.input-with-currency input{padding-left:28px;height:44px;font-size:14px;font-weight:500;border:2px solid var(--ds-gray-300);border-radius:10px;background-color:#fff;color:var(--text-ink);transition:all var(--transition-fast);width:100%}.input-with-currency input:focus{border-color:var(--ds-gray-1000);box-shadow:0 0 0 4px #0000000f;outline:none}.icon-toggle-btn{position:absolute;right:var(--space-sm);top:50%;transform:translateY(-50%);border:none;background:none;color:var(--text-mute);cursor:pointer;display:flex;align-items:center;z-index:10}.icon-toggle-btn:hover{color:var(--text-ink)}.settings-actions{display:flex;align-items:center;gap:var(--space-sm)}.settings-actions .btn{flex:1;height:40px}.instruction-timeline{display:flex;flex-direction:column;gap:var(--space-md)}.timeline-step{display:flex;gap:var(--space-md);align-items:flex-start}.step-number{width:24px;height:24px;background-color:var(--ds-gray-1000);color:#fff;font-family:var(--font-mono);font-size:11px;font-weight:600;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}.step-desc{font-size:12.5px;line-height:1.5;color:var(--text-body)}.step-desc a{color:var(--ds-blue);text-decoration:none;font-weight:500}.step-desc a:hover{text-decoration:underline}.card-divider{border:none;border-top:1px solid var(--border-hairline)}.creator-donate-banner{display:flex;flex-direction:column;gap:var(--space-md);justify-content:space-between;align-items:flex-start}@media (min-width: 640px){.creator-donate-banner{flex-direction:row;align-items:center}}.donate-left h4{font-size:14px;font-weight:600;color:var(--text-ink);margin-bottom:2px}.donate-left p{font-size:12.5px;color:var(--text-mute)}.btn-donate{border-radius:var(--radius-pill);height:40px;font-size:13.5px}.modal-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#0006;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:1000;display:flex;align-items:center;justify-content:center;padding:var(--space-md)}.modal-card{background:#fff;border:1px solid var(--border-hairline);border-radius:var(--radius-lg);padding:var(--space-xl);width:100%;max-width:480px;position:relative;box-shadow:var(--shadow-l4);display:flex;flex-direction:column;gap:var(--space-md);animation:modalSlideUp .3s cubic-bezier(.16,1,.3,1) forwards}@keyframes modalSlideUp{0%{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.modal-close-btn{position:absolute;right:var(--space-lg);top:var(--space-lg);font-size:20px;border:none;background:none;color:var(--text-mute);cursor:pointer;line-height:1;display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;transition:all var(--transition-fast)}.modal-close-btn:hover{color:var(--text-ink);background-color:var(--ds-gray-100)}.modal-title{font-size:18px;font-weight:600;letter-spacing:-.5px;color:var(--text-ink)}.modal-desc{font-size:13px;line-height:1.5;color:var(--text-body)}.modal-api-actions{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-sm)}.support-options-grid{display:grid;grid-template-columns:1fr;gap:var(--space-xs)}@media (min-width: 420px){.support-options-grid{grid-template-columns:repeat(2,1fr)}}.support-option-card{cursor:pointer}.support-option-card input{display:none}.support-option-content{border:2px solid rgba(0,0,0,.08);border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);background-color:#ffffff73;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:2px;transition:all var(--transition-fast);height:100%}.support-option-content:hover{background-color:#ffffffa6;border-color:var(--ds-gray-400)}.support-option-card input:checked+.support-option-content{background-color:#ffffffd9;border-color:var(--text-ink);box-shadow:var(--shadow-l2)}.support-emoji{font-size:20px;margin-bottom:2px}.support-tier-name{font-size:12px;font-weight:600;color:var(--text-ink)}.support-tier-price{font-size:11px;color:var(--text-mute)}#custom-support-amount{margin-top:4px;height:32px;width:100%;border:2px solid var(--border-hairline);border-radius:var(--radius-sm);font-family:var(--font-sans);font-size:12px;padding:0 var(--space-xs);text-align:center;transition:all var(--transition-fast)}#custom-support-amount:focus{outline:none;border-color:var(--text-ink);box-shadow:0 0 0 4px #0000000d}#support-message{width:100%;height:80px;border:2px solid var(--border-hairline);border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);resize:none;font-family:var(--font-sans);font-size:13px;line-height:1.5;transition:all var(--transition-fast);background-color:#fff}#support-message:focus{outline:none;border-color:var(--text-ink);box-shadow:0 0 0 4px #0000000d}.app-footer{background-color:var(--ds-gray-1000);color:var(--ds-gray-400);padding:var(--space-xl) var(--space-lg);font-family:var(--font-mono);font-size:11px}.footer-inner{max-width:1200px;margin:0 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toastSlideIn{to{transform:translateY(0);opacity:1}}.toast-icon{display:flex;flex-shrink:0}.toast-content{flex:1}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.icon-sparkles.spinning{animation:spin 2s linear infinite}body.dark-mode{--ds-gray-50: #0f172a;--ds-gray-100: #1e293b;--ds-gray-200: #334155;--ds-gray-300: #475569;--ds-gray-400: #64748b;--ds-gray-500: #94a3b8;--ds-gray-700: #cbd5e1;--ds-gray-900: #e2e8f0;--ds-gray-1000: #f8fafc;--bg-page: #080d16;--bg-canvas: #0f172a;--border-hairline: rgba(51, 65, 85, .5);--text-ink: var(--ds-gray-1000);--text-body: var(--ds-gray-500);--text-mute: var(--ds-gray-400);--primary-cta: #38bdf8;--primary-cta-hover: #0ea5e9;--primary-cta-text: #0f172a;--bg-page-grid-dots: rgba(56, 189, 248, .04)}body.dark-mode .settings-card,body.dark-mode .modal-card,body.dark-mode .library-item-card,body.dark-mode .workspace-card,body.dark-mode #support-message{background-color:var(--bg-canvas);color:var(--text-body);border-color:var(--border-hairline);box-shadow:0 4px 20px #00000040,inset 0 1px #ffffff0d}body.dark-mode .step-number{background-color:#38bdf8;color:#0f172a}body.dark-mode .settings-card.api-card-highlight{background:linear-gradient(135deg,var(--bg-canvas) 0%,#1e293b 100%);border-color:#38bdf8}body.dark-mode .tab-control{background-color:#ffffff05;border-color:#38bdf826}body.dark-mode .tab-btn.active{background-color:#1e293bbf;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#38bdf8;border:1px solid rgba(56,189,248,.25);box-shadow:0 4px 12px #00000026}body.dark-mode .tab-btn:hover:not(.active){color:#38bdf8;background-color:#38bdf80f}body.dark-mode .btn-primary{background-color:#38bdf826;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-color:#38bdf866;color:#38bdf8}body.dark-mode .btn-primary:hover{background-color:#38bdf84d;border-color:#38bdf8;color:#38bdf8;box-shadow:0 0 16px #38bdf866}body.dark-mode .btn-secondary{background-color:#1e293b73;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-color:#ffffff14;color:var(--text-ink)}body.dark-mode .btn-secondary:hover{background-color:#38bdf826;border-color:#38bdf8;color:#38bdf8;box-shadow:0 0 16px #38bdf833}body.dark-mode .btn-primary-sm{background-color:#38bdf826;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-color:#38bdf866;color:#38bdf8}body.dark-mode .btn-primary-sm:hover{background-color:#38bdf84d;border-color:#38bdf8;color:#38bdf8;box-shadow:0 0 12px #38bdf866}body.dark-mode .btn-secondary-sm{background-color:#1e293b73;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-color:#ffffff14;color:var(--text-ink)}body.dark-mode .btn-secondary-sm:hover{background-color:#38bdf826;border-color:#38bdf8;color:#38bdf8;box-shadow:0 0 12px #38bdf833}body.dark-mode .btn-danger-sm{background-color:#ee000026;border-color:#ee000059;color:#f87171;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}body.dark-mode .btn-danger-sm:hover{background-color:#ee000040;border-color:#ee000080;color:#f87171;box-shadow:0 0 12px #ee000059}body.dark-mode .btn-hero.btn-primary,body.dark-mode .btn-hero.btn-secondary{border-color:#38bdf8;background-color:#38bdf81f;color:#38bdf8;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 8px 24px #0003}body.dark-mode .btn-hero:hover{background-color:#38bdf84d;color:#38bdf8;border-color:#38bdf8;box-shadow:0 0 20px #38bdf880}body.dark-mode .floating-nav-dock{background:#0f172acc;border-color:#38bdf826;color:var(--text-ink);box-shadow:0 8px 32px #0000004d}body.dark-mode .utility-circle-btn{background:#0f172a73;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-color:#38bdf826;color:var(--text-ink);box-shadow:0 8px 32px #0000004d}body.dark-mode .nav-dock-item:hover{background:#38bdf81a;color:#38bdf8}body.dark-mode .nav-dock-item.active{background:#38bdf840;color:#38bdf8;border:1px solid rgba(56,189,248,.45);box-shadow:0 0 16px #38bdf859}body.dark-mode .utility-circle-btn:hover{background:#38bdf84d;color:#38bdf8;border-color:#38bdf8;box-shadow:0 0 16px #38bdf873}body.dark-mode .lib-action-btn{background-color:#1e293b73;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-color:#38bdf833;color:var(--text-ink)}body.dark-mode .lib-action-btn:hover{background-color:#38bdf840;color:#38bdf8;border-color:#38bdf8;box-shadow:0 0 12px #38bdf859}body.dark-mode .lib-action-btn.delete:hover{background-color:#ee000038;color:#f87171;border-color:#ee000073;box-shadow:0 0 12px #ee000059}body.dark-mode .toolbar-btn{background-color:#1e293b73;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-color:#ffffff14;color:var(--text-ink)}body.dark-mode 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.toast{background:#0f172af2;border-color:var(--border-hairline);color:var(--text-ink)}body.dark-mode .theme-menu{background-color:#1e293bf2;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1.5px solid rgba(56,189,248,.2);box-shadow:0 10px 30px #00000080}body.dark-mode .theme-option:hover{background-color:#38bdf814}body.dark-mode .theme-option.active{background-color:#38bdf826;color:#38bdf8}body.dark-mode hr.card-divider{border-top-color:var(--border-hairline)}body.dark-mode .form-input,body.dark-mode .form-select,body.dark-mode .input-with-currency input,body.dark-mode .input-with-icon input{background-color:#0f172a99;border-color:#38bdf833;color:var(--text-ink)}body.dark-mode .form-input:focus,body.dark-mode .form-select:focus,body.dark-mode .input-with-currency input:focus,body.dark-mode .input-with-icon input:focus{border-color:#38bdf8;box-shadow:0 0 0 4px #38bdf826}body.dark-mode [data-tooltip]:after{background-color:#000;color:#38bdf8;border:1.5px solid rgba(56,189,248,.25);box-shadow:0 4px 12px #00000080}body.dark-mode .mode-card-content{background-color:#1e293b73;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-color:#ffffff14;color:var(--text-body)}body.dark-mode .mode-card input:checked+.mode-card-content{background-color:#38bdf81f;border-color:#38bdf8;color:#38bdf8;box-shadow:0 0 12px #38bdf833}body.dark-mode .mode-card-content:hover{background-color:#38bdf80d;border-color:#38bdf84d;color:#38bdf8}body.dark-mode .app-footer{background-color:#030712;color:var(--ds-gray-400)}body.dark-mode .scroll-top-link{color:#38bdf8}.btn:disabled,.toolbar-btn:disabled,.lib-action-btn:disabled{opacity:.35!important;cursor:not-allowed!important;pointer-events:none!important;box-shadow:none!important}body.dark-mode .btn:disabled,body.dark-mode .toolbar-btn:disabled,body.dark-mode .lib-action-btn:disabled{border-color:#ffffff0d!important;color:var(--text-mute)!important;background-color:#ffffff05!important}.back-to-top-btn{position:fixed;bottom:var(--space-lg);right:var(--space-lg);width:48px;height:48px;border-radius:var(--radius-full);background:#ffffffd9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:none;cursor:pointer;z-index:90;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-l3);transition:opacity var(--transition-normal),transform var(--transition-normal),visibility var(--transition-normal);opacity:0;visibility:hidden;transform:translateY(12px) scale(.9)}.back-to-top-btn:hover{transform:translateY(0) scale(1.08);background:var(--ds-gray-50)}.back-to-top-btn:active{transform:translateY(0) scale(.95)}.back-to-top-btn.visible{opacity:1;visibility:visible;transform:translateY(0) scale(1)}.back-to-top-btn 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