/* Phone-first usability layer. Desktop behavior remains intact. */
.mobile-dock{display:none}
@media(max-width:650px){
  :root{--mobile-dock-height:72px}
  body{padding-bottom:calc(var(--mobile-dock-height) + env(safe-area-inset-bottom))}
  button,.primary-btn,.ghost-btn,.text-btn,.icon-btn,input,select,textarea{min-height:46px}
  .topbar{position:sticky;top:0;z-index:85;display:grid;grid-template-columns:1fr auto;gap:.55rem;background:rgba(8,11,17,.96);backdrop-filter:blur(18px)}
  :root.light .topbar{background:rgba(238,242,247,.97)}
  .brand{min-width:0}.brand span:last-child{min-width:0}.brand strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand-mark{width:38px;height:38px;border-radius:11px}
  .top-actions{display:none}
  .search-panel{grid-column:1/-1;order:2;display:grid;grid-template-columns:auto 1fr auto;padding:.25rem}.search-panel button{grid-column:auto;min-width:76px}.search-panel input{min-width:0}
  .category-strip-wrap{top:107px}.category-strip{padding:.45rem .55rem}.strip-btn{min-height:42px}
  .hero{border-radius:14px}.hero h1{font-size:1.8rem;line-height:1.02}.hero-copy{font-size:.94rem}.hero-actions{display:grid;grid-template-columns:1fr 1fr}.hero-actions button{white-space:normal}.trust-row{font-size:.72rem}
  .section-heading{padding:.25rem}.toolbar-controls{display:grid;grid-template-columns:1fr 1fr}.toolbar-controls .live-scroll-label{grid-column:1/-1}.toolbar-controls select{min-width:0}.mobile-filter-button{display:inline-flex;align-items:center;justify-content:center}
  .sidebar{display:block;position:fixed;z-index:120;left:0;right:0;bottom:0;top:auto;max-height:86vh;border-radius:20px 20px 0 0;transform:translateY(105%);transition:transform .22s ease;box-shadow:0 -24px 80px rgba(0,0,0,.55);padding-bottom:calc(1rem + env(safe-area-inset-bottom))}.sidebar.mobile-open{transform:translateY(0)}.mobile-filter-close{display:grid}.sidebar::before{content:"";display:block;width:44px;height:4px;border-radius:99px;background:var(--line-strong);margin:-.25rem auto .75rem}
  .segment-list{grid-template-columns:repeat(4,minmax(0,1fr))}.segment-btn,.segment-btn:first-child{grid-column:auto;display:grid;justify-items:center;text-align:center;gap:.2rem;padding:.55rem .2rem;font-size:.72rem}.segment-btn span{font-size:1.1rem}
  .listing-wall{gap:.75rem}.item-card{border-radius:15px}.card-actions button{min-height:48px}.favorite-btn{width:46px;height:46px;font-size:1.35rem}
  .modal{padding:0;align-items:stretch}.modal::backdrop{background:rgba(0,0,0,.72)}.modal-card{width:100vw;max-width:none;min-height:100dvh;max-height:100dvh;border-radius:0;border:0;overflow:auto;padding:1rem;padding-top:1.2rem}.modal-close{position:sticky;top:0;margin-left:auto;z-index:3;width:48px;height:48px;background:var(--panel-2)}
  .wizard-modal{padding-bottom:100px}.wizard-head{padding-right:0}.wizard-step{scroll-margin-top:10px}.wizard-actions{position:fixed;left:0;right:0;bottom:var(--mobile-dock-height);z-index:125;background:rgba(8,11,17,.96);border-top:1px solid var(--line);padding:.65rem calc(.65rem + env(safe-area-inset-right)) .65rem calc(.65rem + env(safe-area-inset-left));grid-template-columns:1fr 1fr}.wizard-actions button{min-height:52px}.wizard-actions [data-wizard-submit]{grid-column:1/-1}.wizard-actions span{display:none}
  .required-photo-grid{grid-template-columns:1fr 1fr}.optional-photo-grid label{min-height:126px}.stored-media-preview{grid-template-columns:56px 1fr}.stored-media-preview img,.stored-media-preview video{width:56px;height:48px}.stored-media-preview button{grid-column:1/-1;width:100%}
  .message-center-layout{grid-template-columns:1fr;min-height:0}.conversation-list{border-right:0;max-height:42vh}.conversation-pane{min-height:42vh}.message-center-modal{min-height:100dvh}.message-bubble{max-width:92%}
  .profile-summary-grid{grid-template-columns:1fr 1fr}.profile-tabs{position:sticky;top:0;background:var(--panel);z-index:2;padding:.4rem 0}.profile-settings{grid-template-columns:1fr}
  .mobile-dock{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;z-index:130;height:calc(var(--mobile-dock-height) + env(safe-area-inset-bottom));padding:.4rem .3rem env(safe-area-inset-bottom);background:rgba(8,11,17,.97);backdrop-filter:blur(18px);border-top:1px solid var(--line)}:root.light .mobile-dock{background:rgba(255,255,255,.97)}.mobile-dock button{border:0;background:transparent;color:var(--muted);display:grid;place-items:center;align-content:center;gap:.12rem;font-size:.68rem;padding:.2rem}.mobile-dock button span{font-size:1.25rem;color:var(--text)}.mobile-dock .mobile-sell span{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;margin-top:-19px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#06101b;box-shadow:0 8px 24px rgba(84,198,255,.32)}
}
@media(max-width:390px){.required-photo-grid{grid-template-columns:1fr}.hero-actions{grid-template-columns:1fr}.segment-btn strong{font-size:.64rem}.profile-summary-grid{grid-template-columns:1fr}}