@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-success: #059669;--color-error: #dc2626;--color-fokus: #9333ea;--color-fokus-dark: #7e22ce;--color-text: #1f2937;--color-text-light: #6b7280;--color-bg: #ffffff;--color-bg-secondary: #f3f4f6;--color-border: #e5e7eb;--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2.5rem;--spacing-2xl: 3.5rem;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.375rem;--font-size-2xl: 1.75rem;--font-size-3xl: 2rem;--radius-sm: .5rem;--radius-md: 1rem;--radius-lg: 1.25rem;--radius-xl: 1.5rem;--shadow-sm: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .15), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .2), 0 8px 10px -6px rgb(0 0 0 / .15)}body.dark-mode{--color-primary: #3b82f6;--color-primary-dark: #2563eb;--color-success: #10b981;--color-error: #ef4444;--color-text: #f9fafb;--color-text-light: #9ca3af;--color-bg: #1a1f2e;--color-bg-secondary: #242b3d;--color-border: #3d4558;--shadow-sm: 0 1px 3px 0 rgb(0 0 0 / .3), 0 1px 2px -1px rgb(0 0 0 / .3);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .4), 0 2px 4px -2px rgb(0 0 0 / .4);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .5), 0 4px 6px -4px rgb(0 0 0 / .5);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .6), 0 8px 10px -6px rgb(0 0 0 / .5)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:1.7;color:var(--color-text);background-color:var(--color-bg-secondary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .3s ease,color .3s ease}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3{line-height:1.2;font-weight:700}h1{font-size:var(--font-size-2xl);margin-bottom:var(--spacing-lg)}h2{font-size:var(--font-size-xl);margin-bottom:var(--spacing-md)}.container{width:100%;max-width:900px;margin:0 auto;padding:var(--spacing-xl)}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;gap:var(--spacing-md);color:var(--color-text-light)}.loading:before{content:"";width:40px;height:40px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error{background-color:#fef2f2;border:1px solid #fecaca;border-radius:var(--radius-md);padding:var(--spacing-lg);color:var(--color-error);margin:var(--spacing-xl) 0}.button{display:inline-flex;align-items:center;justify-content:center;padding:1rem 1.75rem;font-size:var(--font-size-base);font-weight:600;font-family:var(--font-family);border:none;border-radius:var(--radius-md);cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);min-height:52px;background-color:var(--color-primary);color:#fff;box-shadow:var(--shadow-sm)}.button:hover{background-color:var(--color-primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}.button:active{transform:translateY(0);box-shadow:var(--shadow-sm)}.button:disabled{opacity:.5;cursor:not-allowed;transform:none}.button-secondary{background-color:var(--color-bg);color:var(--color-text);border:2px solid var(--color-border)}.button-secondary:hover{background-color:var(--color-bg-secondary);border-color:var(--color-primary);color:var(--color-primary)}.button-secondary:disabled{opacity:.5;cursor:not-allowed;transform:none}.answer-button{width:100%;min-height:60px;padding:1rem 1.25rem;margin-bottom:var(--spacing-md);background-color:var(--color-bg);border:2px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-base);font-weight:500;font-family:var(--font-family);text-align:left;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);color:var(--color-text);box-shadow:var(--shadow-sm)}.answer-button strong{margin-right:.5rem}.answer-button:hover:not(:disabled){border-color:var(--color-primary);background-color:#eff6ff;transform:translateY(-1px);box-shadow:var(--shadow-md)}.answer-button.selected{border-color:var(--color-primary);background-color:var(--color-primary);color:#fff;transform:scale(1.01)}.answer-button.correct{border-color:var(--color-success);background-color:var(--color-success);color:#fff}.answer-button.incorrect{border-color:var(--color-error);background-color:var(--color-error);color:#fff}.answer-button.disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.explanation-box{background-color:var(--color-bg-secondary);border-left:4px solid var(--color-primary);padding:var(--spacing-md);border-radius:var(--radius-sm);margin-top:var(--spacing-lg);animation:slideIn .3s ease}@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.explanation-box strong{display:block;margin-bottom:var(--spacing-xs);color:var(--color-primary)}.explanation-box p{color:var(--color-text);line-height:1.6;margin:0}.progress-container{margin-bottom:var(--spacing-xl)}.progress-bar{width:100%;height:8px;background-color:var(--color-border);border-radius:999px;overflow:hidden;margin-top:var(--spacing-sm)}.progress-fill{height:100%;background-color:var(--color-primary);transition:width .3s ease}.progress-text{font-size:var(--font-size-sm);color:var(--color-text-light);font-weight:500}.question-card{background-color:var(--color-bg);border-radius:var(--radius-xl);padding:2.5rem;box-shadow:var(--shadow-md);margin-bottom:var(--spacing-xl);transition:all .3s ease}.question-card:hover{box-shadow:var(--shadow-lg)}.question-number{font-size:var(--font-size-sm);color:var(--color-text-light);font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--spacing-md)}.question-text{font-size:var(--font-size-xl);font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-xl);line-height:1.7}.question-image-container{width:100%;max-width:500px;height:300px;display:flex;align-items:center;justify-content:center;margin:var(--spacing-lg) 0;background-color:var(--color-bg-secondary);border-radius:var(--radius-md);overflow:hidden}.question-image{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;border-radius:var(--radius-md)}.result-screen{text-align:center;padding:var(--spacing-xl)}.result-icon{font-size:4rem;margin-bottom:var(--spacing-lg)}.result-status{font-size:var(--font-size-2xl);font-weight:700;margin-bottom:var(--spacing-md)}.result-status.passed{color:var(--color-success)}.result-status.failed{color:var(--color-error)}.result-details{background-color:var(--color-bg-secondary);border-radius:var(--radius-md);padding:var(--spacing-lg);margin:var(--spacing-xl) 0}.result-stat{display:flex;justify-content:space-between;padding:var(--spacing-sm) 0;border-bottom:1px solid var(--color-border)}.result-stat:last-child{border-bottom:none}.result-stat-label{color:var(--color-text-light)}.result-stat-value{font-weight:600}@media (max-width: 640px){.container{padding:var(--spacing-md)}.question-card{padding:var(--spacing-lg)}h1{font-size:var(--font-size-xl)}.question-text{font-size:var(--font-size-base)}}.review-mode{max-width:800px;margin:0 auto}.review-header{text-align:center;margin-bottom:var(--spacing-xl)}.review-header h2{color:var(--color-text);margin-bottom:var(--spacing-sm)}.review-header p{color:var(--color-text-light)}.review-questions{display:flex;flex-direction:column;gap:var(--spacing-xl)}.review-question{background-color:var(--color-bg);border-radius:var(--radius-lg);padding:var(--spacing-xl);box-shadow:var(--shadow-sm);transition:background-color .3s ease}.review-question-number{font-size:var(--font-size-sm);color:var(--color-text-light);font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--spacing-sm)}.review-question-text{font-size:var(--font-size-lg);font-weight:600;color:var(--color-text);margin-bottom:var(--spacing-lg);line-height:1.5}.review-answers{margin:var(--spacing-lg) 0}.review-answer-row{padding:var(--spacing-md);border-radius:var(--radius-md);margin-bottom:var(--spacing-sm)}.review-answer-row.incorrect{background-color:#fee;border:1px solid #fcc}.review-answer-row.correct{background-color:#efe;border:1px solid #cfc}body.dark-mode .review-answer-row.incorrect{background-color:#4a1a1a;border-color:#6a2020}body.dark-mode .review-answer-row.correct{background-color:#1a3a1a;border-color:#206a20}.review-explanation{background-color:var(--color-bg-secondary);border-left:4px solid var(--color-primary);padding:var(--spacing-md);border-radius:var(--radius-sm);margin-top:var(--spacing-lg)}.review-explanation strong{display:block;margin-bottom:var(--spacing-xs);color:var(--color-primary)}.review-explanation p{color:var(--color-text);line-height:1.6;margin:0}.theme-toggle{background-color:var(--color-bg-secondary);color:var(--color-text);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);font-size:1.5rem;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;align-items:center;justify-content:center;min-width:48px;min-height:48px;box-shadow:var(--shadow-sm)}.theme-toggle:hover{background-color:var(--color-primary);border-color:var(--color-primary);color:#fff;transform:scale(1.05);box-shadow:var(--shadow-md)}.theme-toggle:active{transform:translateY(0)}body.dark-mode .answer-button:hover{background-color:var(--color-bg-secondary)}body.dark-mode .error{background-color:#7f1d1d;border-color:#991b1b}.start-screen{max-width:900px;margin:0 auto;padding:var(--spacing-xl);text-align:center}.start-screen h1{font-size:var(--font-size-2xl);margin-bottom:var(--spacing-md);color:var(--color-text)}.mode-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin-top:var(--spacing-xl)}.mode-card{background-color:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:3rem;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);text-align:center;font-family:var(--font-family);box-shadow:var(--shadow-md)}.mode-card:hover{transform:scale(1.02);box-shadow:var(--shadow-xl);border-color:var(--color-border)}.mode-card-express:hover{border-color:#f59e0b;box-shadow:var(--shadow-xl)}.mode-card-full:hover{border-color:var(--color-primary);box-shadow:var(--shadow-xl)}.mode-card-skilt:hover{border-color:#eab308;box-shadow:var(--shadow-xl)}.mode-icon{font-size:4rem;margin-bottom:var(--spacing-md)}.mode-card h2{font-size:var(--font-size-xl);margin-bottom:var(--spacing-sm);color:var(--color-text)}.mode-card p{color:var(--color-text-light);margin-bottom:var(--spacing-md);font-size:var(--font-size-base)}.mode-badge{display:inline-block;padding:var(--spacing-xs) var(--spacing-md);border-radius:8px;font-size:var(--font-size-sm);font-weight:600;box-shadow:0 1px 2px #0000001a}.mode-badge-express{background-color:#f59e0b;color:#fff}.mode-badge-full{background-color:var(--color-primary);color:#fff}.result-actions{display:flex;flex-direction:column;gap:var(--spacing-md);margin-top:var(--spacing-xl)}.result-mode-name{color:var(--color-text-light);font-size:var(--font-size-base);margin-bottom:var(--spacing-sm);font-weight:600}@media (max-width: 640px){.mode-cards{grid-template-columns:1fr}.start-screen{padding:var(--spacing-md)}}.timer{position:fixed;top:100px;right:40px;background-color:var(--color-bg);border:2px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-md) var(--spacing-lg);box-shadow:var(--shadow-md);display:flex;align-items:center;gap:var(--spacing-sm);font-weight:600;z-index:100;transition:all .3s ease}.timer-icon{font-size:1.5rem}.timer-display{font-size:var(--font-size-xl);font-variant-numeric:tabular-nums;color:var(--color-text)}.timer-warning{border-color:var(--color-error);background-color:#fef2f2;animation:pulse 2s infinite}body.dark-mode .timer-warning{background-color:#4a1a1a}.timer-warning .timer-display{color:var(--color-error)}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.timer-expired{opacity:.6}.time-warning-notification{position:fixed;top:200px;right:40px;background-color:var(--color-error);color:#fff;padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);font-weight:600;z-index:101;animation:slideInRight .3s ease,fadeOut .5s ease 4.5s forwards}@keyframes slideInRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@keyframes fadeOut{to{opacity:0;transform:translate(100%)}}.timer-toggle{margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);font-size:var(--font-size-sm);color:var(--color-text-light);cursor:pointer;-webkit-user-select:none;user-select:none}.timer-toggle:hover{color:var(--color-text)}.timer-toggle input[type=checkbox]{width:18px;height:18px;cursor:pointer}.timer-toggle label{cursor:pointer;display:flex;align-items:center;gap:4px}@media (max-width: 640px){.timer{top:80px;right:16px;padding:var(--spacing-sm) var(--spacing-md)}.timer-display{font-size:var(--font-size-lg)}.time-warning-notification{top:160px;right:16px;left:16px;text-align:center}}.streak-container{position:relative}.streak-badge{display:flex;align-items:center;gap:4px;background-color:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);font-size:1.1rem;cursor:pointer;transition:all .2s ease;min-height:48px;box-shadow:var(--shadow-sm);font-family:var(--font-family);color:var(--color-text)}.streak-badge:hover{background-color:var(--color-primary);border-color:var(--color-primary);color:#fff;transform:scale(1.05);box-shadow:var(--shadow-md)}.streak-flame{font-size:1.4rem;line-height:1}.streak-count{font-weight:700;font-size:var(--font-size-base);min-width:1ch;text-align:center}.streak-enable-btn{display:flex;align-items:center;justify-content:center;background:none;border:1px dashed var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-sm);font-size:1.2rem;cursor:pointer;opacity:.4;transition:all .2s ease;min-width:48px;min-height:48px}.streak-enable-btn:hover{opacity:1;border-style:solid;border-color:#f59e0b;background-color:#f59e0b1a}.streak-menu{position:absolute;top:calc(100% + 8px);right:0;background-color:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-md);box-shadow:var(--shadow-lg);min-width:200px;z-index:200;animation:slideIn .2s ease}.streak-menu-title{font-weight:700;font-size:var(--font-size-base);margin-bottom:var(--spacing-xs);color:var(--color-text)}.streak-menu-info{font-size:var(--font-size-sm);color:var(--color-text-light);margin-bottom:var(--spacing-md)}.streak-menu-toggle{width:100%;padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-family:var(--font-family);font-size:var(--font-size-sm);color:var(--color-text-light);cursor:pointer;transition:all .2s ease}.streak-menu-toggle:hover{background-color:var(--color-error);border-color:var(--color-error);color:#fff}@media (max-width: 640px){.streak-badge{padding:var(--spacing-xs) var(--spacing-sm);min-height:40px}.streak-flame{font-size:1.2rem}.streak-menu{right:-40px}}.mode-badge-skilt{background-color:#eab308;color:#fff}.mode-badge-fokus{background-color:var(--color-fokus);color:#fff}.mode-card-fokus:hover:not(:disabled){border-color:var(--color-fokus);box-shadow:var(--shadow-xl)}.mode-card:disabled{opacity:.5;cursor:not-allowed;transform:none}.mode-card:disabled:hover{transform:none;box-shadow:none;border-color:var(--color-border)}@media (max-width: 640px){.question-card{padding:2rem}.container{padding:var(--spacing-lg)}}.nav-tabs{display:flex;gap:var(--spacing-xs);margin-top:var(--spacing-sm)}.nav-tab{background:none;border:none;padding:var(--spacing-xs) var(--spacing-md);font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:600;color:var(--color-text-light);cursor:pointer;border-radius:var(--radius-sm);transition:all .2s ease;position:relative}.nav-tab:hover{color:var(--color-text);background-color:var(--color-bg-secondary)}.nav-tab-active{color:var(--color-primary);background-color:var(--color-bg-secondary)}.nav-tab-active:after{content:"";position:absolute;bottom:-2px;left:var(--spacing-sm);right:var(--spacing-sm);height:3px;background-color:var(--color-primary);border-radius:2px}.theory-page{max-width:900px;margin:0 auto;padding:var(--spacing-xl);text-align:center}.theory-page h1{font-size:var(--font-size-2xl);margin-bottom:var(--spacing-md)}.theory-subtitle{color:var(--color-text-light);font-size:var(--font-size-lg);margin-bottom:var(--spacing-xl)}.theory-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-top:var(--spacing-xl);text-align:left}.theory-card{background-color:var(--color-bg);border:1px solid var(--color-border);border-top:4px solid transparent;border-radius:var(--radius-lg);padding:2rem;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);font-family:var(--font-family);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:var(--spacing-sm)}.theory-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.theory-card-icon{font-size:2.5rem}.theory-card-title{font-size:var(--font-size-lg);font-weight:700;color:var(--color-text);margin:0}.theory-card-desc{color:var(--color-text-light);font-size:var(--font-size-sm);line-height:1.5;margin:0;flex-grow:1}.theory-card-badge{display:inline-block;padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--radius-sm);font-size:var(--font-size-sm);font-weight:600;color:#fff;align-self:flex-start;margin-top:var(--spacing-sm)}.theory-topic-detail{max-width:800px;margin:0 auto}.theory-back-btn{background:none;border:none;font-family:var(--font-family);font-size:var(--font-size-base);font-weight:600;color:var(--color-primary);cursor:pointer;padding:var(--spacing-sm) 0;margin-bottom:var(--spacing-lg);transition:opacity .2s ease}.theory-back-btn:hover{opacity:.7}.theory-topic-header{display:flex;align-items:center;gap:var(--spacing-lg);padding:var(--spacing-xl);background-color:var(--color-bg);border-radius:var(--radius-lg);border-left:5px solid;box-shadow:var(--shadow-md);margin-bottom:var(--spacing-xl)}.theory-topic-header h2{margin:0;font-size:var(--font-size-2xl)}.theory-topic-desc{color:var(--color-text-light);margin:var(--spacing-xs) 0 0 0}.theory-topic-icon-lg{font-size:3.5rem}.theory-sections{display:flex;flex-direction:column;gap:var(--spacing-lg)}.theory-section{background-color:var(--color-bg);border-radius:var(--radius-md);padding:var(--spacing-xl);box-shadow:var(--shadow-sm);transition:background-color .3s ease}.theory-section-title{font-size:var(--font-size-lg);font-weight:700;margin-bottom:var(--spacing-md);color:var(--color-text)}.theory-section-content p{margin:0 0 var(--spacing-xs) 0;line-height:1.7;color:var(--color-text)}.theory-section-content p:empty{margin:0}.theory-section-formula{background-color:#f0f4ff;border-left:4px solid var(--color-primary)}.theory-section-formula .theory-section-title{color:var(--color-primary)}.theory-section-formula .theory-section-content p{font-family:Courier New,monospace;font-size:var(--font-size-base);font-weight:600}body.dark-mode .theory-section-formula{background-color:#1e2a4a}.theory-section-info{background-color:#f0fdf4;border-left:4px solid #059669}.theory-section-info .theory-section-title{color:#059669}body.dark-mode .theory-section-info{background-color:#1a2e1a}.theory-section-warning{background-color:#fef3c7;border-left:4px solid #f59e0b}.theory-section-warning .theory-section-title{color:#d97706}body.dark-mode .theory-section-warning{background-color:#3a2e1a}.theory-section-tip{background-color:#eff6ff;border-left:4px solid #3b82f6}.theory-section-tip .theory-section-title{color:#2563eb}body.dark-mode .theory-section-tip{background-color:#1a253a}.theory-section-example{background-color:#fdf4ff;border-left:4px solid #a855f7}.theory-section-example .theory-section-title{color:#7c3aed}.theory-section-example .theory-section-content p{font-family:Courier New,monospace;font-weight:500}body.dark-mode .theory-section-example{background-color:#2a1a3a}.theory-section-signs{background-color:var(--color-bg)}.theory-signs-grid{display:flex;flex-direction:column;gap:var(--spacing-lg)}.theory-sign-item{display:flex;align-items:center;gap:var(--spacing-lg);padding:var(--spacing-md);border-radius:var(--radius-md);background-color:var(--color-bg-secondary);transition:transform .2s ease,box-shadow .2s ease}.theory-sign-item:hover{transform:translate(4px);box-shadow:var(--shadow-sm)}.theory-sign-img{width:64px;height:64px;object-fit:contain;flex-shrink:0}.theory-sign-text{flex-grow:1}.theory-sign-text strong{display:block;font-size:var(--font-size-base);color:var(--color-text);margin-bottom:2px}.theory-sign-text p{color:var(--color-text-light);font-size:var(--font-size-sm);margin:0;line-height:1.5}.brake-calculator{background-color:var(--color-bg);border-radius:var(--radius-lg);padding:var(--spacing-xl);box-shadow:var(--shadow-md);margin-top:var(--spacing-xl);border-top:4px solid #3b82f6}.calc-title{font-size:var(--font-size-xl);margin-bottom:var(--spacing-xl);text-align:center}.calc-input-section{margin-bottom:var(--spacing-xl)}.calc-label{display:block;font-size:var(--font-size-base);color:var(--color-text-light);margin-bottom:var(--spacing-sm);text-align:center}.calc-label strong{font-size:var(--font-size-xl);color:var(--color-text)}.calc-slider{width:100%;height:8px;-moz-appearance:none;appearance:none;-webkit-appearance:none;background:var(--color-border);border-radius:99px;outline:none;margin:var(--spacing-md) 0}.calc-slider::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;border-radius:50%;background:var(--color-primary);cursor:pointer;box-shadow:var(--shadow-md);transition:transform .15s ease}.calc-slider::-webkit-slider-thumb:hover{transform:scale(1.15)}.calc-slider::-moz-range-thumb{width:28px;height:28px;border-radius:50%;background:var(--color-primary);cursor:pointer;border:none;box-shadow:var(--shadow-md)}.calc-presets{display:flex;justify-content:center;gap:var(--spacing-xs);flex-wrap:wrap}.calc-preset-btn{padding:var(--spacing-xs) var(--spacing-md);border:2px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text);font-family:var(--font-family);font-weight:600;font-size:var(--font-size-sm);cursor:pointer;transition:all .2s ease}.calc-preset-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.calc-preset-btn.active{background-color:var(--color-primary);border-color:var(--color-primary);color:#fff}.calc-results{margin-bottom:var(--spacing-xl)}.calc-result-row{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-md)}.calc-result-label{min-width:140px;display:flex;align-items:center;gap:var(--spacing-sm);font-size:var(--font-size-sm);font-weight:600;color:var(--color-text)}.calc-dot{width:12px;height:12px;border-radius:50%;flex-shrink:0}.calc-bar-container{flex-grow:1;height:24px;background-color:var(--color-bg-secondary);border-radius:var(--radius-sm);overflow:hidden}.calc-bar{height:100%;border-radius:var(--radius-sm);transition:width .4s cubic-bezier(.4,0,.2,1);min-width:4px}.calc-value{min-width:70px;text-align:right;font-weight:700;font-size:var(--font-size-sm);color:var(--color-text);font-variant-numeric:tabular-nums}.calc-divider{height:1px;background-color:var(--color-border);margin:var(--spacing-md) 0}.calc-breakdown{background-color:var(--color-bg-secondary);border-radius:var(--radius-md);padding:var(--spacing-lg)}.calc-breakdown h4{margin-bottom:var(--spacing-md);color:var(--color-text);font-size:var(--font-size-base)}.calc-table{width:100%;border-collapse:collapse;font-size:var(--font-size-sm)}.calc-table th,.calc-table td{padding:var(--spacing-sm) var(--spacing-md);text-align:left;border-bottom:1px solid var(--color-border)}.calc-table th{font-weight:600;color:var(--color-text-light);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}.calc-table td{color:var(--color-text)}.calc-total-row{background-color:var(--color-bg);border-radius:var(--radius-sm)}.calc-total-row td{border-bottom:none}@media (max-width: 640px){.theory-page{padding:var(--spacing-md)}.theory-cards{grid-template-columns:1fr}.theory-topic-header{flex-direction:column;text-align:center;gap:var(--spacing-md)}.theory-topic-icon-lg{font-size:2.5rem}.theory-section{padding:var(--spacing-lg)}.calc-result-row{flex-wrap:wrap}.calc-result-label{min-width:100%;margin-bottom:var(--spacing-xs)}.calc-value{min-width:60px}.nav-tabs{gap:2px}.nav-tab{font-size:.8rem;padding:var(--spacing-xs) var(--spacing-sm)}}