:root{--primary: #6366f1;--primary-dark: #4f46e5;--secondary: #8b5cf6;--accent: #06b6d4;--success: #10b981;--warning: #f59e0b;--error: #ef4444;--background: #f8fafc;--surface: #ffffff;--text-primary: #1e293b;--text-secondary: #64748b;--border: #e2e8f0;--shadow: 0 10px 25px -5px rgba(0, 0, 0, .1);--shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, .25)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#ffffff;min-height:100vh;color:var(--text-primary);line-height:1.6}.container{max-width:1400px;margin:0 auto;padding:2rem}.header{text-align:center;margin-bottom:3rem;color:var(--text-primary)}.header h1{font-size:3rem;font-weight:800;margin-bottom:.5rem;background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header p{font-size:1.2rem;opacity:.9;font-weight:300}.main-content{display:flex;justify-content:center;margin-bottom:2rem}.card{background:var(--surface);border-radius:20px;box-shadow:var(--shadow-lg);overflow:hidden;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);width:100%;max-width:800px}.card-header{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#fff;padding:1.5rem;display:flex;align-items:center;gap:.75rem}.card-header h2{font-size:1.5rem;font-weight:600}.card-body{padding:2rem}.form-grid{display:grid;gap:1.5rem}.form-section{background:var(--background);padding:1.5rem;border-radius:12px;border:1px solid var(--border)}.section-title{display:flex;align-items:center;gap:.5rem;font-weight:600;color:var(--text-primary);margin-bottom:1rem;font-size:1.1rem}.section-title i{color:var(--primary);width:20px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-primary);font-size:.9rem}.form-group input,.form-group select{width:100%;padding:.75rem 1rem;border:2px solid var(--border);border-radius:10px;font-size:1rem;transition:all .3s ease;background:white}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}.strategy-options{display:flex;gap:1rem;margin-top:.5rem}.strategy-option{flex:1;cursor:pointer}.strategy-option input[type=radio]{display:none}.strategy-btn{display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1rem;border:2px solid var(--border);border-radius:10px;background:white;color:var(--text-secondary);font-weight:500;transition:all .3s ease;cursor:pointer}.strategy-btn:hover{border-color:var(--primary);transform:translateY(-1px)}.strategy-btn-no{border-color:var(--error);color:var(--error)}.strategy-btn-yes{border-color:var(--success);color:var(--success)}.strategy-option input[type=radio]:checked+.strategy-btn-no{background:var(--error);color:#fff;border-color:var(--error)}.strategy-option input[type=radio]:checked+.strategy-btn-yes{background:var(--success);color:#fff;border-color:var(--success)}.calculate-btn{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#fff;border:none;padding:1rem 2rem;border-radius:12px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:.5rem;width:100%;margin-top:1rem}.calculate-btn:hover{transform:translateY(-2px);box-shadow:0 15px 30px #6366f14d}.calculate-btn:active{transform:translateY(0)}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);display:none;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.modal-overlay.show{display:flex;animation:fadeIn .3s ease}.modal{background:white;border-radius:20px;box-shadow:0 25px 50px -12px #00000040;width:90vw;max-width:800px;max-height:90vh;overflow-y:auto;position:relative;animation:slideIn .3s ease}.modal-header{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#fff;padding:1.5rem 2rem;border-radius:20px 20px 0 0;display:flex;justify-content:space-between;align-items:center}.modal-header h2{font-size:1.5rem;font-weight:600;display:flex;align-items:center;gap:.75rem}.modal-close{background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:.5rem;border-radius:50%;transition:background-color .3s}.modal-close:hover{background:rgba(255,255,255,.2)}.modal-body{padding:2rem}.modal-result-grid{display:flex;justify-content:center;margin-bottom:2rem}.modal-result-card{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#fff;padding:1.5rem;border-radius:15px;text-align:center;position:relative;overflow:hidden}.modal-result-card:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(45deg,transparent 30%,rgba(255,255,255,.1) 50%,transparent 70%);transform:translate(-100%);transition:transform .6s}.modal-result-card:hover:before{transform:translate(100%)}.modal-result-value{font-size:2.5rem;font-weight:700;margin-bottom:.5rem}.modal-result-label{font-size:1rem;opacity:.9}.modal-details{background:var(--background);padding:1.5rem;border-radius:12px;margin-top:1.5rem}.modal-details h3{color:var(--primary);margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.modal-details-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem}.modal-detail-item{display:flex;justify-content:space-between;padding:.75rem 0;border-bottom:1px solid var(--border)}.modal-detail-item:last-child{border-bottom:none}.modal-detail-label{color:var(--text-secondary);font-weight:500}.modal-detail-value{font-weight:600;color:var(--text-primary)}.error-message{background:linear-gradient(135deg,#fef2f2 0%,#fee2e2 100%);color:var(--error);padding:1rem;border-radius:10px;border:1px solid #fecaca;text-align:center;margin-top:1rem}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:200px;color:var(--text-secondary)}.spinner{width:40px;height:40px;border:4px solid var(--border);border-top:4px solid var(--primary);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1rem}.tips-card{background:linear-gradient(135deg,#f0f9ff 0%,#e0f2fe 100%);border:1px solid #bae6fd;border-radius:15px;padding:1.5rem;margin:2rem auto 0;max-width:800px}.tips-card h3{color:var(--primary);margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.details-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.fade-in{animation:fadeIn .5s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:scale(.9) translateY(-20px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 768px){.container{padding:1rem}.header h1{font-size:2rem}.card-body{padding:1.5rem}.form-row{grid-template-columns:1fr}.form-section{padding:1rem}.card{margin:0 1rem}.strategy-options{flex-direction:column;gap:.5rem}.modal{margin:1rem;width:calc(100vw - 2rem);max-width:calc(100vw - 2rem);max-height:calc(100vh - 2rem)}.modal-header{padding:1rem 1.5rem}.modal-header h2{font-size:1.2rem}.modal-body{padding:1.5rem}.modal-result-grid{justify-content:center}.modal-result-card{padding:1rem}.modal-result-value{font-size:2rem}.modal-result-label{font-size:.9rem}}@media (max-width: 480px){.container{padding:.5rem}.header h1{font-size:1.5rem}.header p{font-size:1rem}.card-body{padding:1rem}.form-section{padding:.75rem}.section-title{font-size:1rem}.modal{margin:.5rem;width:calc(100vw - 1rem);max-width:calc(100vw - 1rem);max-height:calc(100vh - 1rem)}.modal-header{padding:.75rem 1rem}.modal-header h2{font-size:1.1rem}.modal-body{padding:1rem}.modal-result-grid{justify-content:center}.modal-result-card{padding:.75rem}.modal-result-value{font-size:1.8rem}.modal-details-grid{grid-template-columns:1fr}}