:root{--primary-color:#6366f1;--secondary-color:#8b5cf6;--accent-color:#06b6d4;--dark-bg:#0f172a;--card-bg:#1e293b;--light-bg:#334155;--text-dark:#f1f5f9;--text-light:#cbd5e1;--text-muted:#94a3b8;--border-color:#334155;--border-radius:12px;--box-shadow:0 4px 6px rgba(0, 0, 0, 0.3);--transition:all 0.3s ease}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:var(--text-dark);background:linear-gradient(135deg,#0f172a 0,#1e293b 100%);min-height:100vh}header{background:rgba(30,41,59,.95);backdrop-filter:blur(10px);box-shadow:var(--box-shadow);position:sticky;top:0;z-index:1000;border-bottom:1px solid var(--border-color)}nav{max-width:1200px;margin:0 auto;padding:1rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap}.logo{font-size:1.5rem;font-weight:700;color:var(--primary-color);text-decoration:none;display:flex;align-items:center;gap:.5rem}.nav-links{display:flex;list-style:none;gap:1rem;flex-wrap:wrap}.nav-links a{color:var(--text-dark);text-decoration:none;padding:.5rem 1rem;border-radius:var(--border-radius);transition:var(--transition);font-weight:500}.nav-links a.active,.nav-links a:hover{background:var(--primary-color);color:#fff}.menu-toggle{display:none;background:0 0;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-dark)}main{max-width:1200px;margin:2rem auto;padding:0 1rem}.container{background:var(--card-bg);border-radius:var(--border-radius);padding:2rem;box-shadow:var(--box-shadow);margin-bottom:2rem;border:1px solid var(--border-color)}h1{font-size:2rem;margin-bottom:1rem;color:var(--primary-color);text-align:center}h2{font-size:1.5rem;margin-bottom:1rem;color:var(--secondary-color)}h3{font-size:1.25rem;margin-bottom:.75rem;color:var(--text-dark)}p{margin-bottom:1rem;color:var(--text-light)}.calculator-form{display:flex;flex-direction:column;gap:1.5rem;max-width:500px;margin:0 auto}.form-group{display:flex;flex-direction:column;gap:.5rem}label{font-weight:600;color:var(--text-dark);font-size:.95rem}input[type=email],input[type=number],input[type=text],input[type=time],select,textarea{padding:.75rem;border:2px solid var(--border-color);border-radius:8px;font-size:1rem;transition:var(--transition);font-family:inherit;background:var(--dark-bg);color:var(--text-dark)}input:focus,select:focus,textarea:focus{outline:0;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(74,144,226,.1)}.btn,button{padding:.875rem 2rem;background:var(--primary-color);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition);text-decoration:none;display:inline-block;text-align:center}.btn:hover,button:hover{background:var(--secondary-color);transform:translateY(-2px);box-shadow:0 6px 12px rgba(0,0,0,.15)}.btn:active,button:active{transform:translateY(0)}button:disabled{background:var(--light-bg);cursor:not-allowed;transform:none;opacity:.5}.results{margin-top:2rem;padding:1.5rem;background:linear-gradient(135deg,var(--primary-color) 0,var(--secondary-color) 100%);border-radius:var(--border-radius);color:#fff;display:none;border:1px solid rgba(99,102,241,.3)}.results.show{display:block;animation:slideIn .3s ease}.result-item{padding:1rem;background:rgba(255,255,255,.1);border-radius:8px;margin-bottom:1rem;backdrop-filter:blur(10px)}.result-item:last-child{margin-bottom:0}.result-item h3{color:#fff;margin-bottom:.5rem}.result-item p{color:rgba(255,255,255,.9);margin:0;font-size:1.1rem}.time-option{font-size:1.25rem;font-weight:600;padding:.5rem 0}.info-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;margin-top:2rem}.info-card{padding:1.5rem;background:var(--card-bg);border-radius:8px;border:1px solid var(--border-color);border-left:4px solid var(--primary-color)}.info-card h3{color:var(--primary-color);margin-bottom:.5rem}footer{background:rgba(30,41,59,.95);margin-top:4rem;padding:2rem 1rem;text-align:center;border-top:1px solid var(--border-color)}.footer-content{max-width:1200px;margin:0 auto}.footer-links{display:flex;justify-content:center;gap:2rem;margin-bottom:1rem;flex-wrap:wrap}.footer-links a{color:var(--text-dark);text-decoration:none;transition:var(--transition)}.footer-links a:hover{color:var(--primary-color)}.copyright{color:var(--text-muted);font-size:.9rem}@keyframes slideIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:slideIn .5s ease}.loading{display:inline-block;width:20px;height:20px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (min-width:768px){html{font-size:18px}h1{font-size:2.5rem}.info-grid{grid-template-columns:repeat(2,1fr)}nav{flex-wrap:nowrap}}@media (min-width:1024px){.info-grid{grid-template-columns:repeat(3,1fr)}.calculator-form{max-width:600px}}@media (max-width:768px){.menu-toggle{display:block}.nav-links{display:none;width:100%;flex-direction:column;margin-top:1rem}.nav-links.active{display:flex}.nav-links a{width:100%;text-align:center}.container{padding:1.5rem}h1{font-size:1.75rem}.footer-links{flex-direction:column;gap:1rem}}table{width:100%;border-collapse:collapse;margin:1.5rem 0;background:var(--card-bg);border-radius:8px;overflow:hidden}thead{background:var(--light-bg)}th{padding:1rem;text-align:left;font-weight:600;color:var(--text-dark);border-bottom:2px solid var(--border-color)}td{padding:1rem;border-bottom:1px solid var(--border-color);color:var(--text-light)}tr:last-child td{border-bottom:none}tbody tr:hover{background:rgba(99,102,241,.05)}@media print{.nav-links,button,footer,header{display:none}body{background:#fff}.container{box-shadow:none}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}:focus-visible{outline:3px solid var(--primary-color);outline-offset:2px}