/* PixSlicer shared styles: tokens, header/nav, footer. Linked by every page. */
:root{--primary:#4f46e5;--primary-hover:#4338ca;--bg-main:#f8fafc;--surface:#fff;--border:#e2e8f0;--text-main:#0f172a;--text-muted:#64748b;--danger:#ef4444;--success:#22c55e;--dropzone-bg:#fafafa;--workspace-bg:#e2e8f0;--empty-state-text:#64748b;--empty-state-icon:#94a3b8;--tint:#ede9fe}
body.dark-mode{--bg-main:#0f172a;--surface:#1e293b;--border:#334155;--text-main:#f8fafc;--text-muted:#94a3b8;--dropzone-bg:#0f172a;--workspace-bg:#0f172a;--empty-state-text:#94a3b8;--empty-state-icon:#475569;--tint:#312e81}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
[hidden]{display:none!important}
body{font-family:'Inter',sans-serif;background:var(--bg-main);color:var(--text-main);min-height:100vh;display:flex;flex-direction:column;transition:background .2s ease,color .2s ease}
a{color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.site-header{background:var(--surface);border-bottom:1px solid var(--border);padding:10px 20px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-shrink:0;position:relative;z-index:20;transition:background .2s ease,border-color .2s ease}
.header-left{display:flex;align-items:center;gap:12px;min-width:0}
.brand{display:flex;align-items:center;flex-shrink:0}
.brand img{height:30px;width:auto;display:block}
.brand .brand-dark,.brand .brand-mark{display:none}
body.dark-mode .brand .brand-light{display:none}
body.dark-mode .brand .brand-dark{display:block}
.crumb-sep{color:var(--border);font-size:1.3rem;font-weight:300;line-height:1}
.tool-title{display:flex;align-items:center;gap:8px;min-width:0}
.wm{font-weight:700;letter-spacing:-.02em}
.tool-name{font-size:1.05rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.header-actions{display:flex;align-items:center;gap:10px}
.header-subtitle{font-size:.85rem;color:var(--text-muted);margin-right:6px}
@media(max-width:1100px){.header-subtitle{display:none}}

.site-nav{position:relative}
.nav-tools{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:8px;font-weight:600;font-size:.85rem;text-decoration:none;color:var(--text-main);transition:background .15s,color .15s}
.nav-tools i{font-size:.65rem}
.nav-tools:hover,.nav-tools[aria-expanded="true"]{background:var(--bg-main);color:var(--primary)}
.tools-menu{position:absolute;right:0;top:calc(100% + 12px);width:340px;max-width:calc(100vw - 28px);background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:0 20px 25px -5px rgba(0,0,0,.18);padding:6px;z-index:50}
.menu-item{display:flex;align-items:center;gap:12px;padding:10px;border-radius:8px;text-decoration:none}
.menu-item:hover{background:var(--bg-main)}
.menu-item[aria-current="page"]{background:var(--tint)}
.menu-item strong{display:block;font-size:.95rem}
.menu-item span.d{display:block;font-size:.8rem;color:var(--text-muted);font-weight:400;letter-spacing:0}

.theme-toggle-btn{background:var(--bg-main);border:1px solid var(--border);color:var(--text-main);width:36px;height:36px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.95rem;transition:all .2s ease}
.theme-toggle-btn:hover{border-color:var(--primary);color:var(--primary)}

.site-footer{text-align:center;padding:8px;font-size:.75rem;color:var(--text-muted);background:var(--surface);border-top:1px solid var(--border);flex-shrink:0;transition:background .2s ease,border-color .2s ease}
.invisible-link{color:inherit;text-decoration:none;cursor:text}

@media(max-width:640px){
  .site-nav{position:static}
  .tools-menu{left:14px;right:14px;width:auto;max-width:none;top:calc(100% + 8px)}
  .site-header{padding:10px 14px}
  .has-tool .brand .brand-full{display:none!important}
  .has-tool .brand .brand-mark{display:block!important}
}

.footer-links{margin-left:6px}
.footer-links a{margin-left:12px;color:inherit;text-decoration:underline;text-underline-offset:2px}
.footer-links a:hover{color:var(--primary)}