:root{--font-body:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-heading:"Outfit", -apple-system, BlinkMacSystemFont, sans-serif;--bg-color:#0b1121;--card-bg:#111827a6;--text-primary:#f8fafc;--text-secondary:#94a3b8;--accent-color:#be4e1f;--accent-hover:#a6441b;--border-color:#ffffff14;--input-bg:#0f172ab3;--bg-secondary:#1e293b66;--error-color:#ef4444;--success-color:#22c55e}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background-color:var(--bg-color);color:var(--text-primary);-webkit-font-smoothing:antialiased;width:100%;min-height:100vh;line-height:1.6;position:relative;overflow-x:hidden}body:before{content:"";z-index:-1;pointer-events:none;background:radial-gradient(circle at 15%,#be4e1f14,#0000 25%),radial-gradient(circle at 85% 30%,#1e40af26,#0000 25%);position:absolute;inset:0}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading)}.app-container{flex-direction:column;min-height:100vh;display:flex}.header-container,.hero-content,.container,.footer-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}.app-header{-webkit-backdrop-filter:blur(12px);z-index:50;background:#0b1121cc;border-bottom:1px solid #ffffff0d;padding:24px 0;position:sticky;top:0}.header-container{justify-content:space-between;align-items:center;display:flex}.logo{font-family:var(--font-heading);letter-spacing:.1em;color:#fff;font-size:1.5rem;font-weight:800}.main-nav{gap:32px;display:flex}.main-nav a{color:var(--text-secondary);font-size:.95rem;font-weight:500;text-decoration:none;transition:color .2s}.main-nav a:hover{color:var(--accent-color)}@media (width<=768px){.main-nav{display:none}}.hero-section{text-align:center;padding:80px 0 60px}.hero-content h1{background:linear-gradient(135deg,#fff,#cbd5e1);-webkit-text-fill-color:transparent;letter-spacing:-.02em;-webkit-background-clip:text;margin-bottom:16px;font-size:3.5rem;font-weight:800}.hero-content p{color:var(--text-secondary);max-width:600px;margin:0 auto;font-size:1.25rem}@media (width<=768px){.hero-section{padding:60px 0 40px}.hero-content h1{font-size:2.5rem}.hero-content p{font-size:1.1rem}}.calculator-section{flex-grow:1;padding-top:32px;padding-bottom:80px}#sauna-calculator-root{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in-up{animation:.8s cubic-bezier(.16,1,.3,1) forwards fadeInUp}.calculator-card{background:var(--card-bg);-webkit-backdrop-filter:blur(24px);border:1px solid var(--border-color);border-top:1px solid #ffffff26;border-radius:24px;width:100%;padding:48px;box-shadow:0 30px 60px -15px #0009,inset 0 1px #ffffff0d}@media (width<=768px){.calculator-card{border-radius:20px;padding:32px 24px}}.form-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:32px;margin-bottom:32px;display:grid}@media (width<=768px){.form-grid{grid-template-columns:1fr;gap:24px;margin-bottom:24px}}.form-group{flex-direction:column;display:flex}.form-group label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px;font-size:.8rem;font-weight:600}.input-wrapper{align-items:center;display:flex;position:relative}.input-wrapper input,.input-wrapper select{background:var(--input-bg);border:1px solid var(--border-color);width:100%;color:var(--text-primary);font-size:1rem;font-family:var(--font-body);border-radius:12px;outline:none;padding:14px 16px;transition:all .3s;box-shadow:inset 0 2px 4px #0000001a}.input-wrapper input:focus,.input-wrapper select:focus{border-color:var(--accent-color);background:#0f172ae6;box-shadow:inset 0 2px 4px #0000001a,0 0 0 3px #be4e1f33}.toggle-group{gap:12px;margin-top:8px;display:flex}.toggle-btn{background:var(--input-bg);border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;font-weight:600;font-family:var(--font-body);border-radius:10px;flex:1;padding:12px;transition:all .3s cubic-bezier(.16,1,.3,1)}.toggle-btn:hover:not(.active){background:#ffffff0d}.toggle-btn.active{background:var(--accent-color);color:#fff;border-color:var(--accent-color);box-shadow:0 4px 12px #be4e1f4d}.calculator-content{grid-template-columns:1fr 1fr;align-items:start;gap:48px;display:grid}@media (width<=992px){.calculator-content{grid-template-columns:1fr;gap:40px}}.calculator-form-section{flex-direction:column;display:flex}.calculator-results-section{border:1px solid var(--border-color);text-align:center;background:#0f172a66;border-radius:20px;flex-direction:column;align-items:stretch;padding:40px 32px;display:flex;position:relative;overflow:hidden}.calculator-results-section:before{content:"";background:var(--accent-color);filter:blur(100px);opacity:.15;pointer-events:none;width:150px;height:150px;position:absolute;top:0;left:50%;transform:translate(-50%)}.results-section h3{color:var(--text-secondary);font-size:1.25rem;font-family:var(--font-body);margin-bottom:16px}.kw-result{color:#fff;text-shadow:0 0 30px #be4e1f66;font-size:4rem;font-weight:800;font-family:var(--font-heading);letter-spacing:-.02em;margin-bottom:32px}.recommendations{flex-direction:column;gap:24px;margin-top:16px;display:flex}.rec-card{text-align:left;border-top:1px solid #ffffff0d;padding-top:32px}.rec-title{font-family:var(--font-heading);color:var(--text-primary);vertical-align:middle;margin-left:12px;font-size:1.5rem;font-weight:600;display:inline-block}.rec-icon{width:28px;height:28px;color:var(--accent-color);vertical-align:middle}.rec-item{background:var(--bg-secondary);border:1px solid #ffffff0d;border-radius:12px;align-items:center;gap:16px;padding:16px;transition:transform .2s,background .2s;display:flex}.rec-item:hover{background:#1e293bcc;transform:translateY(-2px)}.app-footer{text-align:center;color:var(--text-secondary);border-top:1px solid #ffffff0d;padding:40px 0;font-size:.9rem}@media print{body{color:#000;background:#fff}.app-header,.hero-section,.app-footer,.toggle-group{display:none}.calculator-card{box-shadow:none;color:#000;background:#fff;border:none;padding:0}.kw-result{color:#000;text-shadow:none}.input-wrapper input{color:#000;background:#fff;border:1px solid #ccc}}.modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;background:#000000b3;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.modal-content{background:var(--card-bg);border:1px solid var(--border-color);border-radius:24px;width:100%;max-width:600px;max-height:90vh;padding:40px;position:relative;overflow-y:auto;box-shadow:0 25px 50px -12px #00000080}.modal-close{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;font-size:28px;transition:color .2s;position:absolute;top:24px;right:24px}.modal-close:hover{color:var(--text-primary)}.modal-form{flex-direction:column;gap:20px;display:flex}.form-row{gap:16px;display:flex}.form-row .form-group{flex:1}.form-input{background:var(--input-bg);border:1px solid var(--border-color);width:100%;color:var(--text-primary);font-family:var(--font-body);border-radius:12px;outline:none;padding:12px 16px;transition:border-color .3s}.form-input:focus{border-color:var(--accent-color)}.modal-success{text-align:center;padding:40px 0}.rec-item.selected{border-color:var(--accent-color);box-shadow:0 0 0 1px var(--accent-color);background:#be4e1f26}