*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0f0a1a;--surface:#1a1230;--surface2:#241b3d;--border:#2d2250;--text:#e8e0f0;--text2:#a094b8;--accent:#6C5CE7;--accent2:#8b7cf7;--gold:#FFB800;--green:#00C9A7;--red:#ff6b6b}
body{font-family:'Space Grotesk',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}
.container{max-width:900px;margin:0 auto;padding:0 20px}
.bg-glow{position:fixed;border-radius:50%;filter:blur(120px);opacity:.15;pointer-events:none;z-index:0}
.bg-glow-1{width:500px;height:500px;background:var(--accent);top:-150px;left:-100px}
.bg-glow-2{width:400px;height:400px;background:#9b59b6;bottom:-100px;right:-100px}

header{position:relative;z-index:1;padding:28px 0 24px;text-align:center}
.header-inner{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.logo-row{display:flex;align-items:center;gap:10px}
.logo-img{width:40px;height:40px;border-radius:10px;mix-blend-mode:lighten}
.logo-text{font-size:1.3rem;font-weight:700;color:var(--text)}
h1{font-size:2.2rem;font-weight:700;margin-bottom:8px}
.subtitle{color:var(--text2);font-size:1.05rem}

.btn-upgrade{background:linear-gradient(135deg,var(--gold),#e6a600);color:#1a1230;border:none;padding:8px 18px;border-radius:8px;font-weight:600;font-size:.85rem;cursor:pointer;display:flex;align-items:center;gap:6px;transition:transform .15s,box-shadow .15s}
.btn-upgrade:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(255,184,0,.3)}
.btn-upgrade.hidden{display:none}

/* Tabs */
.tabs{display:flex;gap:4px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:4px;margin-bottom:20px;position:relative;z-index:1}
.tab{flex:1;padding:12px 16px;border:none;background:transparent;color:var(--text2);font-family:inherit;font-size:.95rem;font-weight:600;border-radius:9px;cursor:pointer;transition:background .2s,color .2s;display:flex;align-items:center;justify-content:center;gap:6px}
.tab:hover{color:var(--text)}
.tab.active{background:var(--accent);color:#fff}
.pro-badge{font-size:.65rem;background:var(--gold);color:#1a1230;padding:1px 5px;border-radius:4px;font-weight:700}
.tab.active .pro-badge{background:rgba(255,255,255,.25);color:#fff}

.tab-content{display:none;position:relative;z-index:1}
.tab-content.active{display:block}

/* Drop Zone */
.drop-zone{border:2px dashed var(--border);border-radius:16px;padding:48px 20px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;margin-bottom:20px;background:var(--surface)}
.drop-zone:hover,.drop-zone.drag-over{border-color:var(--accent);background:rgba(108,92,231,.08)}
.drop-zone.hidden{display:none!important}
.drop-content svg{color:var(--accent);margin-bottom:12px}
.drop-content p{font-size:1.15rem;font-weight:600;margin-bottom:4px}
.drop-content span{color:var(--text2);font-size:.9rem}
.drop-hint{display:block;margin-top:8px;color:var(--text2);font-size:.8rem;opacity:.7}

/* Settings */
.settings-bar{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:24px;padding:16px;background:var(--surface);border:1px solid var(--border);border-radius:12px}
.input-group{flex:1;min-width:180px}
.input-group label{display:block;font-size:.8rem;font-weight:600;color:var(--text2);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}
select,.text-input{width:100%;padding:8px 10px;border-radius:8px;border:1px solid var(--border);background:var(--surface2);color:var(--text);font-family:inherit;font-size:.9rem;cursor:pointer}
select:focus,.text-input:focus{outline:none;border-color:var(--accent)}
.input-hint{display:block;margin-top:4px;font-size:.75rem;color:var(--text2);opacity:.7}

/* Progress */
.progress-section{margin-bottom:24px;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:12px;text-align:center}
.progress-bar-wrap{width:100%;height:8px;background:var(--border);border-radius:4px;overflow:hidden;margin-bottom:12px}
.progress-bar{height:100%;width:0%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:4px;transition:width .3s}
.progress-text{color:var(--text2);font-size:.9rem}

/* Results */
.result-section{margin-bottom:24px}
.result-card{display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 16px;margin-bottom:12px}
.result-icon{color:var(--accent);flex-shrink:0}
.result-info{flex:1;min-width:0}
.result-name{font-weight:600;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.result-meta{color:var(--text2);font-size:.8rem;margin-top:2px}
.result-savings{font-weight:700;color:var(--green);font-size:.95rem;margin-right:12px;white-space:nowrap}
.result-savings.negative{color:var(--red)}
.btn-download{background:var(--accent);color:#fff;border:none;padding:10px 20px;border-radius:8px;font-weight:600;font-size:.9rem;cursor:pointer;white-space:nowrap;transition:background .15s;display:flex;align-items:center;gap:8px}
.btn-download:hover{background:var(--accent2)}
.btn-new{background:var(--surface);color:var(--text);border:1px solid var(--border);padding:10px 20px;border-radius:8px;font-weight:600;font-size:.9rem;cursor:pointer;transition:border-color .15s;margin-top:8px;width:100%;text-align:center}
.btn-new:hover{border-color:var(--accent)}

/* Merge list */
.merge-list{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:18px;margin-bottom:24px}
.merge-list h3{font-size:1rem;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.merge-hint{font-size:.8rem;color:var(--text2);font-weight:400}
.merge-item{display:flex;align-items:center;gap:12px;padding:10px 12px;background:var(--surface2);border:1px solid var(--border);border-radius:8px;margin-bottom:6px;cursor:grab}
.merge-item:active{cursor:grabbing}
.merge-item.dragging{opacity:.4}
.merge-item-name{flex:1;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.merge-item-size{color:var(--text2);font-size:.8rem}
.merge-item-remove{background:none;border:none;color:var(--red);font-size:1.2rem;cursor:pointer;padding:0 4px}
.merge-item-grip{color:var(--text2);font-size:1rem;cursor:grab}
.merge-actions{display:flex;gap:12px;margin-top:12px}
.btn-add{background:var(--surface2);color:var(--text);border:1px solid var(--border);padding:10px 20px;border-radius:8px;font-weight:600;font-size:.9rem;cursor:pointer;transition:border-color .15s}
.btn-add:hover{border-color:var(--accent)}

/* Split config */
.split-config{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:18px;margin-bottom:24px}
.split-info{display:flex;gap:16px;margin-bottom:14px;font-size:.9rem}
.split-info span:first-child{font-weight:600}
.split-info span:last-child{color:var(--text2)}

/* Pricing */
.pricing{text-align:center;padding:40px 0 24px}
.pricing h2{font-size:1.6rem;margin-bottom:6px}
.pricing-subtitle{color:var(--text2);margin-bottom:28px}
.pricing-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:700px;margin:0 auto}
.pricing-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:28px 24px;text-align:center}
.pricing-card-pro{border-color:var(--gold);position:relative}
.pricing-popular{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--gold);color:#1a1230;font-size:.75rem;font-weight:700;padding:3px 14px;border-radius:20px;text-transform:uppercase}
.pricing-name{font-weight:700;font-size:1.1rem;margin-bottom:8px}
.pricing-price{font-size:2.2rem;font-weight:700}
.pricing-period{color:var(--text2);font-size:.85rem;margin-bottom:18px}
.pricing-features{list-style:none;text-align:left;margin-bottom:20px}
.pricing-features li{padding:5px 0;font-size:.9rem;padding-left:24px;position:relative}
.pricing-features li::before{position:absolute;left:0;font-size:.85rem}
.pricing-features li.included::before{content:'\2713';color:var(--green)}
.pricing-features li.excluded::before{content:'\2717';color:var(--text2);opacity:.4}
.pricing-features li.excluded{color:var(--text2);opacity:.5}
.pricing-current{color:var(--text2);font-size:.9rem;font-weight:600;padding:10px;border:1px solid var(--border);border-radius:8px}
.btn-buy{background:linear-gradient(135deg,var(--gold),#e6a600);color:#1a1230;border:none;width:100%;padding:12px;border-radius:8px;font-weight:700;font-size:1rem;cursor:pointer;transition:transform .15s,box-shadow .15s}
.btn-buy:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(255,184,0,.3)}

/* FAQ */
.faq{padding:40px 0}
.faq h2{text-align:center;font-size:1.6rem;margin-bottom:24px}
.faq-grid{max-width:700px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:10px;margin-bottom:10px;overflow:hidden}
.faq-item summary{padding:14px 18px;cursor:pointer;font-weight:600;font-size:.95rem;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:'+';font-size:1.2rem;color:var(--accent);transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item p{padding:0 18px 14px;color:var(--text2);font-size:.9rem;line-height:1.6}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:100;display:flex;align-items:center;justify-content:center;padding:20px}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:32px;max-width:420px;width:100%;text-align:center;position:relative}
.modal-close{position:absolute;top:12px;right:16px;background:none;border:none;color:var(--text2);font-size:1.5rem;cursor:pointer}
.modal-icon{margin-bottom:12px}
.modal-icon svg{color:var(--gold)}
.modal h2{font-size:1.4rem;margin-bottom:8px}
.modal>p{color:var(--text2);font-size:.9rem;margin-bottom:16px}
.modal-price{margin-bottom:16px}
.modal-amount{font-size:2.2rem;font-weight:700}
.modal-once{display:block;color:var(--text2);font-size:.85rem}
.modal-perks{list-style:none;text-align:left;margin-bottom:20px}
.modal-perks li{padding:5px 0 5px 24px;position:relative;font-size:.9rem}
.modal-perks li::before{content:'\2713';position:absolute;left:0;color:var(--green)}
.btn-buy-modal{background:linear-gradient(135deg,var(--gold),#e6a600);color:#1a1230;border:none;width:100%;padding:14px;border-radius:10px;font-weight:700;font-size:1.05rem;cursor:pointer;transition:transform .15s,box-shadow .15s}
.btn-buy-modal:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(255,184,0,.3)}
.modal-footer{color:var(--text2);font-size:.8rem;margin-top:12px}

/* Ad slot */
.ad-slot{margin:20px 0;min-height:50px}
.ad-slot.hidden{display:none}

footer{text-align:center;padding:32px 0;color:var(--text2);font-size:.8rem;border-top:1px solid var(--border);margin-top:32px}

.hidden{display:none!important}

@media(max-width:640px){
  h1{font-size:1.5rem}
  .pricing-grid{grid-template-columns:1fr}
  .tabs{flex-direction:column}
  .result-card{flex-wrap:wrap}
  .merge-actions{flex-direction:column}
}