:root{--bg-page: #f5f7fb;--bg-card: #ffffff;--text: #111827;--muted: #6b7280;--line: #d1d5db;--accent: #2a4d8f;--hover: #edf2ff;--sidebar: #0f172a;--sidebar-text: #e2e8f0;--sidebar-soft: #94a3b8}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;background:var(--bg-page);color:var(--text)}#root{min-height:100vh}.admin-shell{display:grid;grid-template-columns:260px 1fr;min-height:100vh;width:100%}.admin-shell.collapsed{grid-template-columns:76px 1fr}.admin-sidebar{background:linear-gradient(180deg,#0f172a,#1e293b);color:var(--sidebar-text);display:flex;flex-direction:column;padding:14px;position:sticky;top:0;height:100vh}.admin-sidebar-logo{margin-bottom:16px}.admin-sidebar-logo .brand-stack{display:flex;flex-direction:column;font-weight:700;letter-spacing:.02em}.admin-sidebar-logo .brand-stack strong{font-size:15px}.admin-sidebar-logo .brand-stack span{font-size:12px;color:#a3aed0}.admin-nav{display:grid;gap:6px;margin-top:4px}.admin-nav-item{color:var(--sidebar-text);text-decoration:none;padding:10px 12px;border-radius:10px;display:flex;align-items:center;gap:10px;transition:background-color .15s ease,transform .15s ease}.admin-nav-item:hover{background-color:#94a3b826;transform:translate(1px)}.admin-nav-item.active{background-color:#3b82f63d;color:#fff}.admin-sidebar.collapsed .label{display:none}.sidebar-collapse-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(226,232,240,.25);border-radius:999px;width:28px;height:28px;align-self:flex-end;cursor:pointer;color:var(--sidebar-text);background:#ffffff14}.admin-main{display:flex;flex-direction:column;min-width:0}.admin-topbar{position:sticky;top:0;z-index:2;height:66px;padding:10px 18px;display:flex;gap:12px;align-items:center;background:var(--bg-card);border-bottom:1px solid var(--line)}.admin-topbar .topbar-title{min-width:170px}.topbar-brand{font-weight:700;display:block}.topbar-sub{color:var(--muted);font-size:12px}.topbar-title-meta{margin-left:auto;margin-right:auto;display:grid}.admin-main-body{padding:16px 20px 24px;min-width:0}.admin-breadcrumb ol{list-style:none;margin:0 0 8px;padding:0;display:flex;gap:8px;color:var(--muted);font-size:14px}.admin-breadcrumb a{color:var(--accent);text-decoration:none}.admin-page-header{background:var(--bg-card);border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:14px}.admin-page-header .eyebrow{margin:0;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.08em}.admin-page-header h1{margin:4px 0 8px;font-size:20px}.admin-page-header p{margin:0;color:var(--muted)}.admin-content{background:var(--bg-card);border:1px solid var(--line);border-radius:12px;padding:16px;min-height:calc(100vh - 220px)}.foundation-overview{display:grid;gap:16px}.scene-preview-panel{overflow:hidden;border:1px solid var(--line);border-radius:12px;background:#f8fafc}.scene-preview-toolbar{min-height:64px;padding:10px 12px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);background:#fff}.scene-preview-toolbar h2{margin:0 0 3px;font-size:16px}.scene-preview-scope{color:var(--muted);font-size:12px}.scene-atmosphere-selector{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:6px}.scene-atmosphere-option{border:1px solid var(--line);border-radius:8px;padding:7px 10px;color:var(--text);background:#fff;cursor:pointer}.scene-preview-edit{border:1px solid #0f766e;border-radius:8px;padding:7px 10px;color:#fff;font-weight:700;text-decoration:none;background:#0f766e}.scene-preview-edit:hover{background:#115e59}.scene-preview-edit:focus-visible{outline:3px solid #99f6e4;outline-offset:2px}.scene-atmosphere-option:hover{border-color:#93c5fd;background:#eff6ff}.scene-atmosphere-option:focus-visible{outline:3px solid #bfdbfe;outline-offset:2px}.scene-atmosphere-option.is-selected{border-color:var(--accent);color:#fff;background:var(--accent)}.scene-preview-frame{aspect-ratio:16 / 9;min-height:360px;background:#dbeafe}.scene-preview-frame iframe{display:block;width:100%;height:100%;border:0}.foundation-status{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;border:1px solid #bfdbfe;border-radius:10px;padding:12px 14px;background:#eff6ff;color:#1e3a8a}.foundation-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.foundation-card{border:1px solid var(--line);border-radius:10px;padding:14px;background:#fff}.foundation-card h2{margin:0 0 8px;font-size:16px}.foundation-card p{margin:0;color:var(--muted);line-height:1.5}.state-page,.state-empty,.state-error,.state-warning,.state-loader{padding:16px}.state-empty,.state-error{border-radius:10px;border:1px dashed var(--line);background:#f8fafc}.topbar-language{display:inline-flex;align-items:center;gap:8px;margin-right:10px}.topbar-actions{display:flex;align-items:center;gap:10px}.btn{display:inline-block;border:1px solid var(--line);border-radius:8px;padding:6px 12px;color:var(--accent);text-decoration:none;background:#fff}.admin-user-menu,.admin-notification-menu{position:relative}.admin-user-menu-panel,.admin-notification-panel{position:absolute;right:0;top:42px;background:#fff;border:1px solid var(--line);border-radius:10px;min-width:190px;padding:6px;box-shadow:0 10px 24px #0000000f;display:grid;gap:4px}.admin-user-menu button,.admin-notification-menu button,.topbar-toggle,.topbar-language select,.login-form button{border:1px solid var(--line);background:#fff;color:var(--text);padding:7px 10px;border-radius:8px}.admin-user-menu-panel button,.admin-notification-menu button{text-align:left;cursor:pointer}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px}.login-panel{width:min(520px,100%);background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px}.login-form{display:grid;gap:12px;margin-top:12px}.login-form label{display:grid;gap:6px}.login-form input{height:34px;border:1px solid var(--line);border-radius:8px;padding:0 10px}.form-feedback{min-height:22px;color:#7f1d1d;margin-top:10px}.form-feedback.error{color:#b91c1c}.global-modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;z-index:99;background:#0206175c;display:grid;place-items:center;padding:16px}.global-modal-card{width:min(560px,100%);background:#fff;border-radius:12px;border:1px solid var(--line);padding:14px}.global-modal-actions{margin-top:12px;display:flex;justify-content:flex-end;gap:8px}.btn-solid{background:var(--accent);border-color:transparent;color:#fff}.admin-sidebar-scrim{display:none}@media (max-width: 900px){.admin-shell{display:block}.admin-sidebar{position:fixed;left:0;top:0;bottom:0;width:260px;transform:translate(-100%);z-index:30;transition:transform .2s ease}.admin-sidebar.mobile-open{transform:translate(0)}.admin-sidebar.collapsed{grid-template-columns:1fr}.admin-sidebar-scrim{position:fixed;top:0;right:0;bottom:0;left:0;z-index:20;background:#0f172a59;display:block}.admin-topbar{gap:8px}.admin-topbar .topbar-title{min-width:0}.scene-preview-toolbar{align-items:flex-start;flex-direction:column}.scene-atmosphere-selector{justify-content:flex-start}.scene-preview-frame{min-height:280px}}