:root{--primary: #00d4ff;--accent: #7c3aed;--bg-dark: #0a0a0f;--bg-card: #12121a;--bg-sidebar: #0d0d14;--text-primary: #ffffff;--text-secondary: #a0a0b0;--text-muted: #6b6b7b;--border: #2a2a3a;--success: #22c55e;--warning: #f59e0b;--danger: #ef4444}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-dark);color:var(--text-primary);line-height:1.6;min-height:100vh}.app{display:flex;min-height:100vh}.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:20;background:var(--bg-sidebar);border-bottom:1px solid var(--border);align-items:center;justify-content:space-between;padding:0 1rem}.menu-toggle{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:.5rem;display:flex;align-items:center}.menu-toggle:hover{color:var(--text-primary)}.sidebar{width:240px;background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:30}.sidebar-header{padding:1.5rem;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.sidebar-close{display:none;background:none;border:none;color:var(--text-muted);font-size:1.2rem;cursor:pointer;padding:.25rem}.sidebar-close:hover{color:var(--text-primary)}.logo{font-size:1.25rem;font-weight:700;color:var(--primary);text-decoration:none;display:flex;align-items:center;gap:.5rem}.logo-img{width:28px;height:28px;border-radius:6px;object-fit:cover}.sidebar-nav{flex:1;padding:1rem 0;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1.5rem;color:var(--text-secondary);text-decoration:none;transition:all .2s;font-size:.9rem}.nav-item:hover{color:var(--text-primary);background:#ffffff0d}.nav-item.active{color:var(--primary);background:#00d4ff1a;border-right:2px solid var(--primary)}.nav-icon{font-size:1.1rem}.nav-divider{height:1px;background:var(--border);margin:.75rem 1.5rem}.nav-label{font-size:.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;padding:.25rem 1.5rem .5rem}.sidebar-footer{padding:1rem 1.5rem;border-top:1px solid var(--border)}.sidebar-overlay{display:none}.btn-lang{width:100%;background:transparent;border:1px solid var(--border);color:var(--text-secondary);padding:.4rem;border-radius:6px;cursor:pointer;font-size:.8rem;margin-bottom:.75rem;transition:all .2s}.btn-lang:hover{border-color:var(--primary);color:var(--primary)}.user-info{display:flex;flex-direction:column;gap:.5rem}.user-email{font-size:.8rem;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.btn-logout{background:none;border:1px solid var(--border);color:var(--text-secondary);padding:.5rem;border-radius:6px;cursor:pointer;font-size:.8rem;transition:all .2s}.btn-logout:hover{border-color:var(--danger);color:var(--danger)}main{flex:1;padding:2rem}main.with-sidebar{margin-left:240px}.page-header{margin-bottom:2rem}.page-header h1{font-size:1.75rem;margin-bottom:.5rem}.page-header p{color:var(--text-secondary)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;border:none;transition:all .2s;text-decoration:none}.btn-primary{background:linear-gradient(135deg,#00d4ff,#7c3aed);color:#0a0a0f}.btn-primary:hover{opacity:.9;transform:translateY(-1px)}.btn-secondary{background:transparent;border:1px solid var(--border);color:var(--text-primary)}.btn-secondary:hover{border-color:var(--primary)}.form-group{margin-bottom:1.25rem}.form-group label{display:block;font-size:.85rem;color:var(--text-secondary);margin-bottom:.5rem}.form-group input{width:100%;padding:.75rem 1rem;background:#ffffff0d;border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:.9rem;outline:none;transition:border-color .2s}.form-group input:focus{border-color:var(--primary)}.badge{display:inline-block;padding:.25rem .75rem;border-radius:12px;font-size:.75rem;font-weight:600}.badge-success{background:#22c55e33;color:var(--success)}.badge-warning{background:#f59e0b33;color:var(--warning)}.badge-danger{background:#ef444433;color:var(--danger)}.badge-info{background:#00d4ff33;color:var(--primary)}.alert{padding:1rem;border-radius:8px;margin-bottom:1rem;font-size:.9rem}.alert-error{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:var(--danger)}.alert-success{background:#22c55e1a;border:1px solid rgba(34,197,94,.3);color:var(--success)}@media(max-width:768px){.mobile-header{display:flex}.sidebar{transform:translate(-100%);transition:transform .3s ease;width:280px}.sidebar.open{transform:translate(0)}.sidebar-close{display:block}.sidebar-overlay{display:block;position:fixed;inset:0;background:#0009;z-index:25}main{padding:1rem;padding-top:calc(56px + 1rem)}main.with-sidebar{margin-left:0}.page-header h1{font-size:1.35rem}}