*{margin:0;padding:0;box-sizing:border-box;}:root{--primary-color:#6366f1;--primary-dark:#4f46e5;--secondary-color:hsl(258,90%,66%);--accent-color:#ec4899;--success-color:#10b981;--warning-color:#f59e0b;--error-color:#ef4444;--bg-color:#f8fafc;--card-bg:#ffffff;--text-color:#1e293b;--text-light:#64748b;--border-color:#e2e8f0;--shadow:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -1px rgba(0,0,0,0.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);}body{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:var(--text-color);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden;}.back-btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.75rem 1.5rem;background:var(--card-bg);color:var(--primary-color);text-decoration:none;border-radius:12px;font-weight:600;font-size:1rem;box-shadow:var(--shadow);transition:all 0.3s ease;margin:2rem 2rem 1rem;position:relative;overflow:hidden;border:2px solid transparent;width:fit-content;}.back-btn::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(99,102,241,0.1),transparent);transition:left 0.5s ease;}.back-btn:hover::before{left:100%;}.back-btn:hover{background:var(--primary-color);color:white;transform:translateX(-5px);box-shadow:var(--shadow-lg);border-color:var(--primary-color);}.back-btn:active{transform:translateX(-3px)scale(0.98);}.container{max-width:900px;margin:0 auto;padding:1.5rem 1rem;width:100%;flex:1;}.container > h1{font-size:2.25rem;color:white;margin-bottom:0.5rem;text-align:center;text-shadow:0 2px 4px rgba(0,0,0,0.1);line-height:1.3;word-wrap:break-word;}.container > p{font-size:1.1rem;color:rgba(255,255,255,0.9);line-height:1.6;text-align:center;max-width:800px;margin:0 auto 2rem;}.stopwatch-card{background:var(--card-bg);border-radius:16px;box-shadow:var(--shadow-lg);padding:2rem 1.5rem;animation:fadeInUp 0.6s ease;text-align:center;}.time-display{font-size:4rem;font-weight:800;color:var(--primary-color);font-family:'Courier New',Courier,monospace;letter-spacing:2px;margin:1rem 0 2rem;padding:1.5rem;background:linear-gradient(135deg,var(--bg-color)0%,#f1f5f9 100%);border-radius:12px;border:2px solid var(--border-color);text-align:center;min-height:120px;display:flex;align-items:center;justify-content:center;}.controls{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-bottom:2rem;}.control-btn{padding:1rem 1.5rem;border:none;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all 0.3s ease;display:flex;align-items:center;justify-content:center;gap:0.5rem;box-shadow:var(--shadow);min-height:48px;}.control-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg);}.control-btn:disabled{opacity:0.5;cursor:not-allowed;transform:none;}.control-btn:active:not(:disabled){transform:translateY(0);}.start-btn{background:linear-gradient(135deg,var(--success-color)0%,#059669 100%);color:white;grid-column:span 2;}.start-btn:hover:not(:disabled){background:linear-gradient(135deg,#059669 0%,#047857 100%);}.pause-btn{background:linear-gradient(135deg,var(--warning-color)0%,#d97706 100%);color:white;}.pause-btn:hover:not(:disabled){background:linear-gradient(135deg,#d97706 0%,#b45309 100%);}.reset-btn{background:linear-gradient(135deg,var(--text-light)0%,var(--text-color)100%);color:white;}.reset-btn:hover:not(:disabled){background:linear-gradient(135deg,#475569 0%,#334155 100%);}.lap-btn{background:linear-gradient(135deg,var(--accent-color)0%,#db2777 100%);color:white;}.lap-btn:hover:not(:disabled){background:linear-gradient(135deg,#db2777 0%,#be185d 100%);}.btn-icon{font-size:1.2rem;}.lap-section{background:var(--bg-color);border-radius:12px;padding:1.5rem;border:1px solid var(--border-color);text-align:left;}.lap-title{font-size:1.25rem;color:var(--primary-color);margin-bottom:1rem;text-align:center;}.lap-list{list-style:none;max-height:200px;overflow-y:auto;margin-bottom:1rem;}.lap-list::-webkit-scrollbar{width:6px;}.lap-list::-webkit-scrollbar-track{background:#f1f5f9;border-radius:10px;}.lap-list::-webkit-scrollbar-thumb{background:var(--primary-color);border-radius:10px;}.lap-item{display:flex;justify-content:space-between;align-items:center;padding:0.75rem 1rem;background:var(--card-bg);border-radius:8px;margin-bottom:0.5rem;font-family:'Courier New',Courier,monospace;font-size:1rem;color:var(--text-color);border:1px solid var(--border-color);transition:all 0.2s ease;}.lap-item:hover{border-color:var(--primary-color);transform:translateX(5px);}.lap-number{font-weight:700;color:var(--primary-color);margin-right:0.5rem;}.lap-time{font-weight:600;}.clear-laps-btn{width:100%;padding:0.75rem;background:var(--error-color);color:white;border:none;border-radius:8px;font-size:0.9rem;font-weight:600;cursor:pointer;transition:all 0.3s ease;min-height:44px;}.clear-laps-btn:hover{background:#dc2626;transform:translateY(-2px);box-shadow:var(--shadow);}.content-section,.faq-section,.seo-article{background:var(--card-bg);border-radius:16px;padding:2rem;margin:2rem 0;box-shadow:var(--shadow-lg);}.content-section h2,.faq-section h2,.seo-article h2{font-size:1.75rem;color:var(--primary-color);margin-bottom:1.5rem;text-align:center;}.content-section p,.seo-article p{margin-bottom:1.25rem;line-height:1.7;color:var(--text-color);}.content-section strong,.seo-article strong{color:var(--primary-dark);font-weight:600;}.seo-article h3{color:var(--primary-color);margin:1.5rem 0 1rem;font-size:1.25rem;}.seo-article ul{margin:0 0 1.25rem 1.5rem;line-height:1.8;color:var(--text-color);}.faq-item{background:var(--bg-color);border-radius:12px;padding:1.5rem;margin-bottom:1rem;border-left:4px solid var(--primary-color);transition:all 0.3s ease;}.faq-item:hover{border-color:var(--primary-dark);box-shadow:var(--shadow);}.faq-item h3{font-size:1.1rem;color:var(--text-color);margin-bottom:0.75rem;font-weight:600;}.faq-item p{margin:0;color:var(--text-light);line-height:1.7;}@keyframes fadeInUp{from{opacity:0;transform:translateY(20px);}to{opacity:1;transform:translateY(0);}}@keyframes pulse{0%,100%{opacity:1;}50%{opacity:0.7;}}.time-display.running{animation:pulse 1s infinite;}*:focus{outline:2px solid var(--primary-color);outline-offset:2px;}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;}}@media(min-width:768px)and(max-width:1023px){.container{padding:2rem;}.container > h1{font-size:2.5rem;}.time-display{font-size:5rem;}}@media(max-width:767px){.back-btn{margin:1.5rem 1rem 1rem;padding:0.6rem 1.2rem;font-size:0.9rem;}.container{padding:1rem;}.container > h1{font-size:1.8rem;}.container > p{font-size:1rem;}.stopwatch-card{padding:1.5rem 1rem;}.time-display{font-size:3rem;padding:1rem;min-height:100px;letter-spacing:1px;}.controls{gap:0.75rem;}.control-btn{padding:0.8rem;font-size:0.9rem;}.btn-icon{font-size:1rem;}.lap-section{padding:1rem;}.lap-item{font-size:0.9rem;padding:0.6rem 0.8rem;}.content-section,.faq-section,.seo-article{padding:1.5rem 1rem;margin:1.5rem 0;}.content-section h2,.faq-section h2,.seo-article h2{font-size:1.5rem;}.seo-article h3{font-size:1.15rem;}.faq-item{padding:1.2rem;}.faq-item h3{font-size:1rem;}}@media(max-width:480px){.container > h1{font-size:1.6rem;}.time-display{font-size:2.5rem;padding:0.8rem;min-height:90px;}.controls{gap:0.5rem;}.control-btn{padding:0.7rem;font-size:0.85rem;flex-direction:column;gap:0.2rem;}.btn-icon{font-size:1.2rem;}.start-btn{grid-column:span 2;}.lap-title{font-size:1.1rem;}.seo-article p,.faq-item p{font-size:0.95rem;}}@media(max-width:360px){.time-display{font-size:2.2rem;}.control-btn{font-size:0.8rem;}}