*,::after,::before{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#1a1a2e;--color-surface:#16213e;--color-primary:#e94560;--color-text:#eaeaea;--color-muted:#888;--color-empty:#2ecc71;--color-occupied:#e74c3c;--radius:8px;--gap:16px}body{background:var(--color-bg);color:var(--color-text);font-family:'Segoe UI',system-ui,sans-serif;font-size:15px;min-height:100vh}.app-shell{display:flex;flex-direction:column;min-height:100vh}.app-header{display:flex;align-items:center;gap:12px;padding:12px 24px;background:var(--color-surface);border-bottom:2px solid var(--color-primary)}.app-header__title{font-size:22px;font-weight:700;color:var(--color-primary);letter-spacing:1px}.app-header__version{font-size:11px;font-family:monospace;background:rgba(255,255,255,.1);color:var(--color-text);padding:2px 8px;border-radius:10px;border:1px solid rgba(255,255,255,.2);cursor:default;letter-spacing:.5px}.app-content{flex:1;padding:var(--gap);overflow-y:auto}.room-grid__title{font-size:16px;font-weight:600;margin-bottom:var(--gap);color:var(--color-muted);text-transform:uppercase;letter-spacing:1px}.room-grid__list{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:var(--gap)}.room-card{background:var(--color-surface);border-radius:var(--radius);padding:20px 16px;cursor:pointer;border:2px solid transparent;transition:transform .15s,border-color .15s;-webkit-user-select:none;-moz-user-select:none;user-select:none}.room-card:hover{transform:translateY(-2px)}.room-card:active{transform:translateY(0)}.room-card--empty{border-color:var(--color-empty)}.room-card--occupied{border-color:var(--color-occupied)}.room-card__name{font-size:16px;font-weight:700;margin-bottom:8px}.room-card__status{font-size:13px}.room-card--occupied .room-card__status{color:var(--color-occupied)}.room-card--empty .room-card__status{color:var(--color-empty)}.room-card__time{font-size:12px;color:var(--color-muted);margin-top:4px}.update-banner{position:fixed;bottom:0;left:0;right:0;z-index:9999;display:flex;align-items:center;gap:12px;padding:12px 20px;background:#1a73e8;color:#fff;font-size:14px;box-shadow:0 -2px 8px rgba(0,0,0,.2);animation:slideUp .3s ease-out}@keyframes slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}.update-banner__icon{font-size:20px;line-height:1}.update-banner__msg{flex:1}.update-banner__btn{padding:6px 16px;border:none;border-radius:4px;cursor:pointer;font-size:13px;font-weight:600;transition:opacity .2s}.update-banner__btn:disabled{opacity:.6;cursor:not-allowed}.update-banner__btn--apply{background:#fff;color:#1a73e8}.update-banner__btn--apply:hover:not(:disabled){background:#e8f0fe}.update-banner__btn--dismiss{background:0 0;color:#fff;border:1px solid rgba(255,255,255,.5);padding:6px 10px}.update-banner__btn--dismiss:hover:not(:disabled){background:rgba(255,255,255,.15)}