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1.5rem);max-width:340px}}@keyframes spin{to{transform:rotate(360deg)}}.spinner{display:inline-block;width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}.spinner-lg{width:22px;height:22px;border-width:3px}@media (max-width: 640px){.card-header{flex-direction:column!important;align-items:stretch!important;gap:.6rem!important}.card-header-top{display:flex;align-items:center;gap:.75rem}.card-header-actions{display:flex;justify-content:flex-start;flex-wrap:wrap;gap:.4rem}.edit-actions{justify-content:flex-end!important}}@media (max-width: 640px){.layout-sidebar{display:none}.layout-content{margin-left:0;padding-top:52px;padding-bottom:70px}.layout-topbar{display:flex;position:fixed;top:0;left:0;right:0;height:52px;background:var(--surface);border-bottom:1px solid var(--border);align-items:center;padding:0 1rem;gap:.5rem;z-index:100}.layout-topbar-brand{display:flex;align-items:center;gap:.5rem;flex:1;cursor:pointer}.layout-topbar-brand-name{font-weight:700;color:var(--accent);font-size:1rem}.layout-topbar-right{display:flex;align-items:center;gap:.5rem}.layout-topbar-theme-btn{background:transparent;border:1px solid var(--border);border-radius:8px;padding:.3rem .45rem;color:var(--muted);cursor:pointer;display:flex;align-items:center;line-height:1;transition:color .15s,border-color .15s}.layout-topbar-theme-btn:hover{color:var(--accent);border-color:var(--accent)}.layout-bottomnav{display:flex;position:fixed;bottom:0;left:0;right:0;height:70px;background:var(--surface);border-top:1px solid var(--border);z-index:100}.layout-tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.22rem;background:transparent;border:none;color:var(--muted);cursor:pointer;font-size:.62rem;font-weight:500;letter-spacing:.03em;transition:color .15s;padding:.5rem .25rem;position:relative}.layout-tab.active{color:var(--accent)}.layout-tab.active:before{content:"";position:absolute;top:0;left:20%;right:20%;height:2px;background:var(--accent);border-radius:0 0 2px 2px}.layout-fab{display:flex;position:fixed;bottom:82px;right:1.25rem;z-index:99;width:54px;height:54px;border-radius:50%;align-items:center;justify-content:center;font-size:1.6rem;font-weight:300;background:#3a8a3a;color:#fff;border:none;cursor:pointer;box-shadow:0 4px 16px #0006;transition:transform .15s,box-shadow .15s}.layout-fab:active{transform:scale(.94);box-shadow:0 2px 8px #0000004d}}