:root{--bg: #f5f7fb;--surface: #ffffff;--border: #e2e8f0;--text: #0f172a;--muted: #64748b;--primary: #1d4ed8;--primary-hover: #1e40af;--danger: #b91c1c;--radius: 12px;--shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .04);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);line-height:1.5}a{color:var(--primary);text-decoration:none}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.btn{font:inherit;border:1px solid transparent;border-radius:8px;padding:.55rem 1rem;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:.4rem;transition:background .15s ease,border-color .15s ease}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-ghost{background:transparent;border-color:var(--border);color:var(--text)}.btn-ghost:hover{background:var(--bg)}.app-shell{min-height:100%;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;gap:1.25rem;padding:.75rem 1.5rem;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:.5rem}.brand-name{font-weight:700;font-size:1.15rem}.app-nav{display:flex;gap:.25rem;flex:1}.app-nav a{padding:.4rem .75rem;border-radius:8px;color:var(--muted);font-weight:500}.app-nav a:hover{background:var(--bg);color:var(--text)}.app-nav a.active{background:#eff4ff;color:var(--primary)}.app-actions{display:flex;align-items:center;gap:.75rem}.user-name{font-size:.9rem;color:var(--muted);max-width:14ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.app-main{flex:1;padding:1.5rem;max-width:960px;width:100%;margin:0 auto}.app-footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.5rem;padding:.85rem 1.5rem;border-top:1px solid var(--border);background:var(--surface);font-size:.8rem;color:var(--muted)}.lang-switcher select{font:inherit;padding:.4rem .5rem;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);cursor:pointer}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem}.page-head{margin-bottom:1rem}.page-head h1{margin:0 0 .25rem;font-size:1.5rem}.muted{color:var(--muted)}.error-text{color:var(--danger)}.info-card p{margin:.25rem 0}.empty-state{text-align:center}.empty-state p{margin:.25rem 0}.centered-screen{min-height:100%;display:flex;align-items:center;justify-content:center;padding:1.5rem;position:relative}.signin-corner{position:absolute;top:1.5rem;right:1.5rem}.signin-card{max-width:420px;text-align:center}.signin-card h1{margin:1rem 0 .5rem}.signin-card .btn{margin-top:.5rem}.tagline{margin-top:1.25rem;font-size:.85rem;color:var(--muted)}.spinner{width:32px;height:32px;margin:0 auto .75rem;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:640px){.app-header{flex-wrap:wrap;gap:.75rem}.app-nav{order:3;width:100%;overflow-x:auto}.user-name{display:none}}