:root{--bg-body:#f0f4f9;--bg-card:#fff;--text-primary:#455a64;--text-secondary:#65676b;--border-color:#e4e6eb;--btn-bg:#607d8b;--btn-text:#fff;--accent-color:#007aff;--danger:#d9534f;--chip:#e8eef3;--shadow:0 1px 2px rgba(69,90,100,.06)}
[data-theme=dark]{--bg-body:#131314;--bg-card:#1e1f20;--text-primary:#e3e3e3;--text-secondary:#c4c7c5;--border-color:#444746;--btn-bg:#e3e3e3;--btn-text:#131314;--accent-color:#66b2ff;--danger:#ff8a80;--chip:#2a2b2c;--shadow:none}
*{box-sizing:border-box;scrollbar-width:thin}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}
html,body{margin:0;min-height:100%;background:var(--bg-body);color:var(--text-primary)}
body{font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;padding-top:env(safe-area-inset-top,0);padding-bottom:env(safe-area-inset-bottom,0);transition:background .3s,color .3s}
a{color:var(--accent-color);text-decoration:none}
.hidden{display:none!important}
.muted{color:var(--text-secondary);font-size:13px}
.err{color:var(--danger);font-size:13px;min-height:16px}
.spacer{flex:1}

.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:8px;min-height:60px;padding:8px 14px;background:var(--bg-card);border-bottom:1px solid var(--border-color)}
.brand{font-weight:800;font-size:20px;letter-spacing:-.5px;color:var(--text-primary);padding:0 6px;flex-shrink:0}
.search{flex:1;min-width:0;position:relative;max-width:520px}
.search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-secondary);pointer-events:none}
.search .inp{padding-left:36px;border-radius:20px;font-size:15px}
.inp,select.inp,textarea.inp{background:var(--bg-body);border:1px solid var(--border-color);color:var(--text-primary);border-radius:12px;padding:11px 14px;font-size:16px;outline:none;width:100%;font-family:inherit}
textarea.inp{resize:vertical;min-height:120px;line-height:1.45}
.inp:focus,select.inp:focus,textarea.inp:focus{border-color:var(--accent-color)}
.btn{background:var(--btn-bg);color:var(--btn-text);border:none;border-radius:24px;padding:11px 20px;font-weight:600;font-size:15px;cursor:pointer;font-family:inherit;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;white-space:nowrap}
.btn:disabled{opacity:.5;cursor:default}
.btn-new{flex-shrink:0}
.btn-ghost{background:transparent;color:var(--text-primary);border:1px solid var(--border-color)}
.btn-danger{background:var(--danger);color:#fff}
.icon-btn{background:transparent;border:none;color:var(--text-secondary);width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;padding:0;cursor:pointer;transition:background .15s,color .15s,transform .1s}
.icon-btn:hover{background:rgba(128,128,128,.1);color:var(--text-primary)}
.icon-btn:active{transform:scale(.92)}
.icon-btn svg{display:block;pointer-events:none}
#b-user.on{color:var(--accent-color)}

#app{max-width:1120px;margin:0 auto;padding:16px 16px 48px}

.filters{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.chips{display:flex;gap:8px;overflow-x:auto;padding:2px 0 6px;-webkit-overflow-scrolling:touch}
.chip{flex-shrink:0;border:1px solid var(--border-color);background:var(--bg-card);color:var(--text-primary);border-radius:20px;padding:7px 14px;font-size:14px;cursor:pointer;font-family:inherit}
.chip:hover{background:var(--chip)}
.chip.on{background:var(--btn-bg);color:var(--btn-text);border-color:transparent}
.price-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.price-row .inp{width:140px;padding:8px 12px;border-radius:12px;font-size:15px}
.price-row .btn{padding:8px 16px}

.grid{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:640px){.grid{grid-template-columns:repeat(2,1fr);gap:16px}}
@media(min-width:960px){.grid{grid-template-columns:repeat(3,1fr)}}
.ad-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;overflow:hidden;color:var(--text-primary);display:flex;flex-direction:column;box-shadow:var(--shadow);transition:transform .12s}
.ad-card:hover{transform:translateY(-1px)}
.ad-card .pic{aspect-ratio:4/3;background:var(--chip) center/cover no-repeat;display:block}
.ad-card .pic.empty{display:flex;align-items:center;justify-content:center;color:var(--text-secondary)}
.ad-card .body{padding:12px 14px 14px;display:flex;flex-direction:column;gap:4px;min-width:0}
.ad-card .price{font-weight:800;font-size:18px;letter-spacing:-.3px}
.ad-card .title{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ad-card .meta{font-size:13px;color:var(--text-secondary)}

.empty-state{text-align:center;padding:48px 16px;color:var(--text-secondary)}
.empty-state h2{margin:0 0 8px;color:var(--text-primary);font-size:20px}
.more-wrap{display:flex;justify-content:center;margin:24px 0 8px}

/* ad page */
.ad-page{display:grid;gap:20px}
@media(min-width:860px){.ad-page{grid-template-columns:1.3fr .9fr;align-items:start}}
.gallery{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;overflow:hidden}
.gallery-main{position:relative;background:#000;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;user-select:none;touch-action:pan-y}
.gallery-main img{max-width:100%;max-height:100%;object-fit:contain;cursor:zoom-in}
.gal-nav{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,.45);color:#fff;border:none;width:40px;height:40px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center}
.gal-nav:hover{background:rgba(0,0,0,.65)}
.gal-nav.prev{left:10px}.gal-nav.next{right:10px}
.gal-count{position:absolute;bottom:10px;right:12px;background:rgba(0,0,0,.5);color:#fff;border-radius:12px;padding:2px 8px;font-size:12px}
.thumbs{display:flex;gap:8px;overflow-x:auto;padding:10px}
.thumbs img{width:68px;height:68px;object-fit:cover;border-radius:10px;cursor:pointer;border:2px solid transparent;flex-shrink:0;background:var(--chip)}
.thumbs img.on{border-color:var(--accent-color)}
.ad-info{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;padding:20px;display:flex;flex-direction:column;gap:10px}
.ad-info h1{margin:0;font-size:22px;font-weight:800;letter-spacing:-.3px;line-height:1.3}
.ad-info .price{font-size:26px;font-weight:800;letter-spacing:-.4px}
.desc{white-space:pre-wrap;word-wrap:break-word;margin:0}
.contact{background:var(--bg-body);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:6px}
.contact .row{display:flex;gap:8px;flex-wrap:wrap}
.contact b{font-weight:700}
.back{display:inline-flex;align-items:center;gap:4px;color:var(--text-secondary);font-size:14px;margin-bottom:10px}
.back:hover{color:var(--text-primary)}

/* forms / auth */
.center-screen{display:flex;align-items:flex-start;justify-content:center;padding:24px 16px 48px}
.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:24px;padding:24px;width:100%;max-width:420px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow)}
.card.wide{max-width:640px}
.card h2{margin:0 0 4px;font-size:20px;font-weight:800}
.card form,.form{display:flex;flex-direction:column;gap:12px}
.tabs{display:flex;gap:0;border:1px solid var(--border-color);border-radius:24px;overflow:hidden;align-self:stretch}
.tabs button{flex:1;background:transparent;border:none;padding:9px;font-size:15px;font-weight:600;color:var(--text-secondary);cursor:pointer;font-family:inherit}
.tabs button.on{background:var(--btn-bg);color:var(--btn-text)}
label.lbl{font-size:13px;color:var(--text-secondary);display:flex;flex-direction:column;gap:6px}

.previews{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px}
.preview{position:relative;aspect-ratio:1;border-radius:12px;overflow:hidden;background:var(--chip);border:1px solid var(--border-color)}
.preview img{width:100%;height:100%;object-fit:cover}
.preview .rm{position:absolute;top:4px;right:4px;width:28px;height:28px;border-radius:50%;border:none;background:rgba(0,0,0,.6);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center}
.add-photo{aspect-ratio:1;border:1px dashed var(--border-color);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--text-secondary);cursor:pointer;background:var(--bg-body);font-size:12px;text-align:center;padding:8px}
.add-photo:hover{border-color:var(--accent-color);color:var(--accent-color)}

.viewer{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:60;display:flex;align-items:center;justify-content:center}
.viewer img{max-width:100%;max-height:100%;object-fit:contain}
.viewer-x{position:absolute;top:12px;right:12px;color:#fff;background:rgba(255,255,255,.1)}
.viewer-x:hover{background:rgba(255,255,255,.2);color:#fff}

.user-menu{position:absolute;top:56px;right:12px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;box-shadow:0 4px 15px rgba(0,0,0,.15);z-index:50;display:flex;flex-direction:column;padding:6px;min-width:180px}
.user-menu button,.user-menu .who{background:none;border:none;color:var(--text-primary);text-align:left;padding:10px 14px;font-size:15px;border-radius:8px;cursor:pointer;font-family:inherit}
.user-menu .who{cursor:default;color:var(--text-secondary);font-size:13px}
.user-menu button:hover{background:var(--bg-body)}

@media(max-width:768px){
  body{font-size:14px}
  .top{flex-wrap:wrap;padding:8px 10px;gap:6px}
  .brand{font-size:18px}
  .search{order:3;flex-basis:100%;max-width:none}
  .btn-new{padding:9px 12px;font-size:13px}
  #app{padding:12px 12px 40px}
  .ad-info h1{font-size:20px}
  .ad-info .price{font-size:22px}
  .price-row .inp{width:110px}
}