:root{--bg:#08080a;--bg2:#111114;--card:#16161b;--inp:#1e1e25;--hov:#26262e;--brd:#2a2a33;--t1:#f0eff4;--t2:#9896a3;--t3:#6b6878;--ac:#6c5ce7;--acl:#a29bfe;--acg:rgba(108,92,231,.12);--ac2:#fd79a8;--ok:#00b894;--warn:#fdcb6e;--err:#e17055;--r1:8px;--r2:12px;--r3:16px;--sh:0 8px 48px rgba(0,0,0,.4);--tr:.2s cubic-bezier(.4,0,.2,1)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html,body{overflow-x:hidden}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--t1);min-height:100vh}

/* Ambient */
.ambg{position:fixed;inset:0;z-index:0;pointer-events:none}
.ambg::before{content:'';position:absolute;top:-30%;left:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(108,92,231,.06) 0%,transparent 70%);animation:f1 20s ease-in-out infinite}
.ambg::after{content:'';position:absolute;bottom:-20%;right:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(253,121,168,.04) 0%,transparent 70%);animation:f2 25s ease-in-out infinite}
@keyframes f1{0%,100%{transform:translate(0,0)}50%{transform:translate(80px,60px)}}
@keyframes f2{0%,100%{transform:translate(0,0)}50%{transform:translate(-60px,-80px)}}

/* Header */
header{position:sticky;top:0;z-index:100;padding:16px 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--brd);backdrop-filter:blur(20px);background:rgba(8,8,10,.85)}
.logo{display:flex;align-items:center;gap:16px;text-decoration:none}
.logo-icon{width:44px;height:44px;background:linear-gradient(135deg,var(--ac),var(--ac2));border-radius:10px;display:grid;place-items:center;font-size:18px;color:#fff;flex-shrink:0;box-shadow:0 4px 20px rgba(108,92,231,.35);transition:transform .3s}
.logo:hover .logo-icon{transform:rotate(-6deg) scale(1.05)}
.logo-text{display:flex;align-items:baseline;gap:6px}
.logo-text .p1{font-family:'Playfair Display',serif;font-size:28px;font-weight:700;letter-spacing:-.03em;background:linear-gradient(135deg,#fff,#ddd);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.logo-text .p2{font-family:'Playfair Display',serif;font-size:28px;font-weight:400;font-style:italic;letter-spacing:-.02em;background:linear-gradient(135deg,var(--acl),var(--ac2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hlinks{display:flex;align-items:center;gap:12px}
.hlink{display:inline-flex;align-items:center;gap:7px;padding:8px 14px;background:var(--card);border:1px solid var(--brd);border-radius:var(--r1);color:var(--t2);text-decoration:none;font-size:13px;font-weight:500;transition:all var(--tr)}
.hlink:hover{background:var(--hov);border-color:var(--t3);color:var(--t1)}
.hlink i{font-size:14px}

/* Layout */
.app{position:relative;z-index:1;max-width:1400px;margin:0 auto;padding:32px 40px 80px;display:grid;grid-template-columns:1fr 380px;gap:32px;align-items:start}
.main-col,.side-col{min-width:0}

/* Panel */
.panel{background:var(--card);border:1px solid var(--brd);border-radius:var(--r3);overflow:hidden}
.panel-sticky{position:sticky;top:80px}
.ph{padding:18px 24px;border-bottom:1px solid var(--brd);display:flex;align-items:center;gap:10px;font-size:14px;font-weight:600}
.ph i{color:var(--acl);font-size:15px}
.ph .badge{margin-left:auto;background:var(--acg);color:var(--acl);font-size:11px;font-weight:600;padding:3px 10px;border-radius:20px;white-space:nowrap}
.pb{padding:24px}

/* Drop Zone */
.drop-zone{border:2px dashed var(--brd);border-radius:var(--r2);padding:48px 32px;text-align:center;cursor:pointer;transition:all .3s;color:var(--t3);position:relative;overflow:hidden}
.drop-zone::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,var(--acg) 0%,transparent 70%);opacity:0;transition:opacity .3s;pointer-events:none}
.drop-zone:hover,.drop-zone.drag-over{border-color:var(--ac);background:var(--acg);color:var(--t2)}
.drop-zone.drag-over::before{opacity:1}
.drop-zone.drag-over{transform:scale(1.01)}
.drop-zone .dz-icon{font-size:48px;margin-bottom:16px;display:block;background:linear-gradient(135deg,var(--acl),var(--ac2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;transition:transform .3s}
.drop-zone.drag-over .dz-icon{transform:scale(1.15) translateY(-4px)}
.drop-zone .dz-title{font-size:16px;font-weight:600;color:var(--t1);margin-bottom:6px}
.drop-zone .dz-sub{font-size:13px;color:var(--t3);line-height:1.6}
.drop-zone .dz-sub strong{color:var(--acl);font-weight:500}
.drop-zone .dz-formats{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;margin-top:16px}
.drop-zone .dz-formats span{font-family:'JetBrains Mono',monospace;font-size:10.5px;padding:3px 8px;background:var(--inp);border:1px solid var(--brd);border-radius:4px;color:var(--t2)}
.drop-zone input[type="file"]{display:none}

/* Input Methods */
.input-methods{display:flex;gap:8px;margin-top:16px}
.input-methods button{flex:1;padding:10px 12px;border:1px solid var(--brd);border-radius:var(--r1);background:var(--inp);color:var(--t2);font-family:inherit;font-size:12.5px;font-weight:500;cursor:pointer;transition:all var(--tr);display:flex;align-items:center;justify-content:center;gap:6px}
.input-methods button:hover{background:var(--hov);border-color:var(--t3);color:var(--t1)}

/* File List */
.file-list{margin-top:20px}
.file-list-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:8px;flex-wrap:wrap}
.file-list-header h3{font-size:13px;font-weight:600;color:var(--t2)}
.file-list-actions{display:flex;gap:6px}
.file-list-actions button{padding:5px 10px;border:1px solid var(--brd);border-radius:6px;background:var(--inp);color:var(--t3);font-family:inherit;font-size:11px;cursor:pointer;transition:all var(--tr)}
.file-list-actions button:hover{background:var(--hov);color:var(--t1);border-color:var(--t3)}

/* File Items */
.file-items{max-height:400px;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;gap:6px;scrollbar-width:thin;scrollbar-color:var(--brd) transparent}
.file-items::-webkit-scrollbar{width:5px}
.file-items::-webkit-scrollbar-thumb{background:var(--brd);border-radius:3px}

.file-item{display:flex;align-items:center;gap:12px;padding:10px 14px;background:var(--inp);border:1px solid var(--brd);border-radius:var(--r1);transition:all var(--tr);animation:slideIn .25s ease-out;overflow:hidden;min-width:0}
@keyframes slideIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.file-item:hover{border-color:var(--t3)}

.file-item .fi-thumb{width:40px;height:40px;border-radius:6px;background:var(--bg2);overflow:hidden;flex-shrink:0;display:grid;place-items:center}
.file-item .fi-thumb.clickable{cursor:pointer;transition:transform var(--tr)}
.file-item .fi-thumb.clickable:hover{transform:scale(1.08)}
.file-item .fi-thumb img{width:100%;height:100%;object-fit:cover}
.file-item .fi-thumb i{font-size:16px;color:var(--t3)}

.file-item .fi-info{flex:1;min-width:0;overflow:hidden}
.file-item .fi-name{font-size:12.5px;font-weight:500;color:var(--t1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}
.file-item .fi-meta{display:flex;gap:6px;margin-top:3px;font-size:11px;color:var(--t3);white-space:nowrap;overflow:hidden}
.file-item .fi-meta span{font-family:'JetBrains Mono',monospace;flex-shrink:0}
.file-item .fi-meta .fi-path{flex-shrink:1;overflow:hidden;text-overflow:ellipsis}

/* File Action Buttons */
.fi-actions{display:flex;gap:4px;flex-shrink:0}
.fi-act{width:28px;height:28px;display:grid;place-items:center;border:none;background:none;color:var(--t3);cursor:pointer;border-radius:6px;transition:all var(--tr);font-size:12px}
.fi-act:hover{background:var(--hov);color:var(--acl)}
.fi-act.del:hover{background:rgba(225,112,85,.15);color:var(--err)}
.fi-act.ok{color:var(--acl)}
.fi-act.ok:hover{background:rgba(0,184,148,.12);color:var(--ok)}

/* Form Groups */
.fg{margin-bottom:18px}.fg:last-child{margin-bottom:0}
.fg label{display:block;font-size:12.5px;font-weight:500;color:var(--t2);margin-bottom:7px;letter-spacing:.02em}
.fg .hn{font-weight:400;color:var(--t3);font-size:11.5px}
select{width:100%;padding:11px 14px;background:var(--inp);border:1px solid var(--brd);border-radius:var(--r1);color:var(--t1);font-family:'DM Sans',sans-serif;font-size:13.5px;transition:all var(--tr);outline:none;cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239896a3' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}
select:focus{border-color:var(--ac);box-shadow:0 0 0 3px var(--acg)}
input[type="range"]{width:100%;height:6px;-webkit-appearance:none;background:var(--hov);border-radius:3px;outline:none}
input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;background:var(--ac);border-radius:50%;cursor:pointer;box-shadow:0 2px 8px rgba(108,92,231,.3)}
.rl{display:flex;justify-content:space-between;font-size:11px;color:var(--t3);margin-top:4px}

/* Buttons */
.convert-btn{width:100%;padding:14px;border:none;border-radius:var(--r1);background:linear-gradient(135deg,var(--ac),#8b7cf7);color:#fff;font-family:inherit;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s;display:flex;align-items:center;justify-content:center;gap:8px;margin-top:24px;box-shadow:0 4px 20px rgba(108,92,231,.3)}
.convert-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 28px rgba(108,92,231,.45)}
.convert-btn:disabled{opacity:.4;cursor:not-allowed}
.download-all-btn{width:100%;padding:12px;border:1px solid var(--ok);border-radius:var(--r1);background:rgba(0,184,148,.08);color:var(--ok);font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:all .3s;display:flex;align-items:center;justify-content:center;gap:8px;margin-top:10px}
.download-all-btn:hover{background:rgba(0,184,148,.15);box-shadow:0 4px 16px rgba(0,184,148,.2)}

/* Progress */
.batch-progress{margin-top:16px;display:none}
.batch-progress.active{display:block}
.bp-bar{height:6px;background:var(--hov);border-radius:3px;overflow:hidden;margin-bottom:8px}
.bp-fill{height:100%;background:linear-gradient(90deg,var(--ac),var(--ac2));border-radius:3px;transition:width .3s;width:0%}
.bp-text{display:flex;justify-content:space-between;font-size:11px;color:var(--t3)}
.bp-text .bp-count{font-family:'JetBrains Mono',monospace;color:var(--acl)}

/* Stats */
.stats-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.stat-card{padding:14px;background:var(--inp);border:1px solid var(--brd);border-radius:var(--r1);text-align:center}
.stat-card .sv{font-family:'JetBrains Mono',monospace;font-size:18px;font-weight:700;background:linear-gradient(135deg,var(--acl),var(--ac2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-card .sl{font-size:11px;color:var(--t3);margin-top:2px}

/* Toggle */
.toggle-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;gap:12px}
.toggle-row>span{font-size:12.5px;color:var(--t2)}
.toggle{position:relative;width:40px;min-width:40px;height:22px;cursor:pointer;flex-shrink:0}
.toggle input{opacity:0;width:0;height:0}
.toggle .slider{position:absolute;inset:0;background:var(--hov);border-radius:11px;transition:all var(--tr)}
.toggle .slider::before{content:'';position:absolute;width:16px;height:16px;background:var(--t3);border-radius:50%;top:3px;left:3px;transition:all var(--tr)}
.toggle input:checked+.slider{background:var(--ac)}
.toggle input:checked+.slider::before{transform:translateX(18px);background:#fff}

/* ============================
   Modal Overlay (shared)
   ============================ */
.modal-overlay{position:fixed;inset:0;z-index:1000;background:rgba(8,8,10,.88);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:all .3s}
.modal-overlay.active{opacity:1;pointer-events:all}
.modal-box{background:var(--card);border:1px solid var(--brd);border-radius:var(--r3);padding:40px;text-align:center;max-width:420px;width:90%}
.modal-icon{font-size:40px;color:var(--acl);margin-bottom:16px;display:block}
.modal-box h3{font-size:16px;font-weight:600;margin-bottom:8px}
.modal-box p{font-size:13px;color:var(--t3);margin-bottom:20px;word-break:break-all}
.modal-status{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--t2)}

/* Folder Confirm Actions */
.modal-actions{display:flex;gap:10px;justify-content:center;margin-top:8px}
.modal-btn{padding:10px 24px;border-radius:var(--r1);font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:all var(--tr);border:none;display:flex;align-items:center;gap:6px}
.modal-btn.cancel{background:var(--hov);color:var(--t2);border:1px solid var(--brd)}
.modal-btn.cancel:hover{background:var(--inp);color:var(--t1)}
.modal-btn.confirm{background:linear-gradient(135deg,var(--ac),#8b7cf7);color:#fff;box-shadow:0 4px 16px rgba(108,92,231,.3)}
.modal-btn.confirm:hover{box-shadow:0 6px 24px rgba(108,92,231,.45);transform:translateY(-1px)}

/* ============================
   Preview Modal
   ============================ */
.preview-box{background:var(--card);border:1px solid var(--brd);border-radius:var(--r3);overflow:hidden;max-width:90vw;max-height:90vh;display:flex;flex-direction:column;width:800px}
.preview-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--brd)}
.preview-title{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.preview-close{width:32px;height:32px;display:grid;place-items:center;border:none;background:none;color:var(--t3);cursor:pointer;border-radius:6px;font-size:16px;flex-shrink:0;transition:all var(--tr)}
.preview-close:hover{background:var(--hov);color:var(--t1)}
.preview-img-wrap{flex:1;overflow:auto;display:flex;align-items:center;justify-content:center;padding:16px;background:var(--bg2);min-height:200px;max-height:70vh}
.preview-img-wrap img{max-width:100%;max-height:100%;object-fit:contain;border-radius:4px}
.preview-meta{padding:10px 20px;font-size:12px;color:var(--t3);font-family:'JetBrains Mono',monospace;border-top:1px solid var(--brd);text-align:center}

/* ============================
   EXIF Modal
   ============================ */
.exif-box{background:var(--card);border:1px solid var(--brd);border-radius:var(--r3);overflow:hidden;max-width:500px;width:90%;max-height:80vh;display:flex;flex-direction:column}
.exif-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--brd)}
.exif-title{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.exif-close{width:32px;height:32px;display:grid;place-items:center;border:none;background:none;color:var(--t3);cursor:pointer;border-radius:6px;font-size:16px;flex-shrink:0;transition:all var(--tr)}
.exif-close:hover{background:var(--hov);color:var(--t1)}
.exif-tabs{display:flex;gap:0;border-bottom:1px solid var(--brd)}
.exif-tab{flex:1;padding:10px;border:none;background:none;color:var(--t3);font-family:inherit;font-size:12px;font-weight:600;cursor:pointer;transition:all var(--tr);position:relative}
.exif-tab.on{color:var(--acl)}
.exif-tab.on::after{content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--ac)}
.exif-tab:hover{color:var(--t1);background:var(--hov)}
.exif-content{flex:1;overflow-y:auto;padding:16px 20px;scrollbar-width:thin;scrollbar-color:var(--brd) transparent}
.exif-empty{text-align:center;padding:32px 16px;color:var(--t3);font-size:13px;display:flex;flex-direction:column;align-items:center;gap:10px}
.exif-empty i{font-size:24px;opacity:.5}
.exif-table{width:100%;border-collapse:collapse}
.exif-table td{padding:8px 10px;font-size:12px;border-bottom:1px solid var(--brd)}
.exif-table td:first-child{color:var(--t2);font-weight:500;white-space:nowrap;width:40%}
.exif-table td:last-child{color:var(--t1);font-family:'JetBrains Mono',monospace;font-size:11.5px;word-break:break-all}

/* Toast */
.toast{position:fixed;bottom:32px;left:50%;transform:translateX(-50%) translateY(100px);z-index:9999;padding:12px 24px;background:var(--card);border:1px solid var(--brd);border-radius:var(--r1);color:var(--t1);font-size:13px;font-weight:500;box-shadow:var(--sh);transition:transform .4s cubic-bezier(.175,.885,.32,1.275);display:flex;align-items:center;gap:10px;max-width:90vw}
.toast.show{transform:translateX(-50%) translateY(0)}
.toast.success{border-color:var(--ok)}.toast.success i{color:var(--ok)}
.toast.error{border-color:var(--err)}.toast.error i{color:var(--err)}

.hidden{display:none !important}

/* Responsive — Tablet */
@media(max-width:1024px){
  .app{grid-template-columns:1fr;padding:20px}
  .panel-sticky{position:static}
  header{padding:16px 20px}
  .logo-text .p1,.logo-text .p2{font-size:22px}
}

/* Responsive — Mobile */
@media(max-width:640px){
  header{flex-direction:column;gap:12px;padding:14px 16px}
  .hlinks{width:100%;justify-content:center;flex-wrap:wrap}
  .app{padding:12px 10px 60px;gap:12px}
  .pb{padding:14px}.ph{padding:12px 14px;font-size:13px;gap:8px}
  .drop-zone{padding:28px 14px}
  .drop-zone .dz-icon{font-size:32px;margin-bottom:10px}
  .drop-zone .dz-title{font-size:14px}.drop-zone .dz-sub{font-size:12px}
  .drop-zone .dz-formats{gap:4px;margin-top:12px}.drop-zone .dz-formats span{font-size:9px;padding:2px 5px}
  .input-methods{flex-direction:column;gap:6px}
  .file-items{max-height:280px}
  .file-item{padding:8px 10px;gap:8px}
  .file-item .fi-thumb{width:32px;height:32px;border-radius:5px}
  .file-item .fi-name{font-size:11.5px}
  .file-item .fi-meta{gap:4px;font-size:10px}
  .fi-actions{gap:2px}
  .fi-act{width:24px;height:24px;font-size:10px}
  select{font-size:12px;padding:10px 12px}
  .fg label{font-size:12px}
  .convert-btn{font-size:13px;padding:12px;margin-top:16px}
  .download-all-btn{font-size:12px;padding:10px}
  .stats-row{gap:8px}.stat-card{padding:10px}.stat-card .sv{font-size:15px}.stat-card .sl{font-size:10px}
  .toggle-row>span{font-size:12px}
  .logo-text .p1,.logo-text .p2{font-size:20px}
  .logo-icon{width:36px;height:36px;font-size:15px}
  .logo{gap:10px}
  .hlink{font-size:12px;padding:6px 10px}
  .preview-box{width:95vw}.preview-img-wrap{max-height:50vh}
  .exif-box{width:95%;max-height:70vh}
  .modal-box{padding:24px}
}