/* ===== Photo Background Remover page ===== */
.rb-note{max-width:640px;margin:.9rem auto 0;text-align:center}
.rb-app{margin:1.5rem 0 2rem}
.rb-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:1.25rem;align-items:start}
.rb-stage{background:var(--bg-surface);border:1px solid var(--border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:1rem}
.rb-compare{position:relative;width:100%;max-width:100%;margin:0 auto;border-radius:var(--radius-md);overflow:hidden;touch-action:pan-y;user-select:none;-webkit-user-select:none;cursor:ew-resize;
  background-color:#fff;background-image:linear-gradient(45deg,#e2e8f0 25%,transparent 25%),linear-gradient(-45deg,#e2e8f0 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e2e8f0 75%),linear-gradient(-45deg,transparent 75%,#e2e8f0 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}
.rb-compare canvas{display:block;width:100%;height:auto}
#rbOut{position:absolute;left:0;top:0;width:100%;height:100%}
.rb-handle{position:absolute;top:0;bottom:0;width:3px;background:#fff;box-shadow:0 0 0 1px rgba(15,23,42,.25);pointer-events:none;transform:translateX(-1.5px)}
.rb-handle span{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:36px;height:36px;border-radius:50%;background:#fff;color:var(--primary);box-shadow:0 2px 8px rgba(15,23,42,.35);display:flex;align-items:center;justify-content:center;font-weight:800}
.rb-labels{display:flex;justify-content:space-between;font-size:.78rem;font-weight:700;color:var(--text-muted);padding:.5rem .25rem 0;text-transform:uppercase;letter-spacing:.04em}
.rb-busy{position:absolute;inset:0;background:rgba(255,255,255,.88);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.4rem;text-align:center;padding:1rem;z-index:5}
.rb-busy[hidden]{display:none}
.rb-busy small{color:var(--text-secondary)}
.rb-spin{width:38px;height:38px;border:4px solid #dbeafe;border-top-color:var(--primary);border-radius:50%;animation:rbspin .8s linear infinite}
@keyframes rbspin{to{transform:rotate(360deg)}}
.rb-panel{background:var(--bg-surface);border:1px solid var(--border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:1.1rem}
.rb-panel h3{font-size:.95rem;margin:1.1rem 0 .55rem}
.rb-panel h3:first-child{margin-top:0}
.rb-tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:.3rem;background:var(--bg-subtle);padding:.3rem;border-radius:var(--radius-md)}
.rb-tab{border:1px solid transparent;background:transparent;border-radius:var(--radius-sm);padding:.45rem .1rem;font:inherit;font-size:.72rem;font-weight:700;color:var(--text-secondary);cursor:pointer}
.rb-tab.active{background:#fff;color:var(--primary);border-color:var(--primary)}
.rb-pane{margin-top:.8rem}
.rb-pane[hidden]{display:none}
.rb-swatches{display:flex;flex-wrap:wrap;gap:.45rem;align-items:center}
.rb-sw{width:32px;height:32px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px #cbd5e1;cursor:pointer;padding:0}
.rb-sw.active{box-shadow:0 0 0 2px var(--primary)}
.rb-pane input[type=color]{width:38px;height:32px;padding:0;border:1px solid #cbd5e1;border-radius:8px;background:#fff}
.rb-row{display:flex;gap:.5rem;align-items:center;margin-top:.6rem}
.rb-sl{margin-bottom:.55rem}
.rb-sl .slider-header{font-size:.82rem}
.rb-dl{display:flex;flex-direction:column;gap:.55rem}
.rb-hint{font-size:.78rem;color:var(--text-secondary);margin-top:.35rem;line-height:1.45}
.rb-err{background:#fef2f2;border:1px solid #fecaca;color:#991b1b;border-radius:var(--radius-md);padding:.75rem 1rem;margin:.8rem 0;font-size:.9rem}
@media (max-width:900px){.rb-grid{grid-template-columns:1fr}}

.tool-hero[hidden],.rb-app[hidden],.rb-err[hidden],.rb-pane[hidden],#rbQWrap[hidden]{display:none!important}

.header-nav .nav-link{white-space:nowrap}
.header-nav{gap:.15rem}
@media (max-width:1180px){.header-nav .nav-link{font-size:.82rem;padding-left:.55rem;padding-right:.55rem}}