:root{--primary-color:#fff;--primary-hover:#e0e0e0;--bg-dark:#000;--glass-bg:#ffffff08;--glass-border:#ffffff14;--text-main:#fff;--text-muted:#888;--accent:#fff;--danger:#222}*{box-sizing:border-box;-webkit-font-smoothing:antialiased;margin:0;padding:0;font-family:Inter,system-ui,sans-serif}body{background-color:var(--bg-dark);color:var(--text-main);background:radial-gradient(circle at top,#1a1a1a,#000 70%);min-height:100vh}.glass-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(24px);border:1px solid var(--glass-border);border-radius:1.25rem;padding:2.5rem;transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s;box-shadow:0 8px 32px #0000004d,inset 0 1px #ffffff0d}.btn-primary{background:var(--primary-color);color:#000;cursor:pointer;border:none;border-radius:.75rem;justify-content:center;align-items:center;padding:.85rem 1.75rem;font-size:.95rem;font-weight:600;transition:all .3s;display:inline-flex;box-shadow:0 4px 14px #ffffff1a}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 6px 20px #fff3}.btn-secondary{border:1px solid var(--glass-border);cursor:pointer;color:#fff;background:#ffffff05;border-radius:.75rem;justify-content:center;align-items:center;gap:.75rem;padding:.85rem 1.75rem;font-size:.95rem;text-decoration:none;transition:all .3s;display:flex}.btn-secondary:hover{background:#ffffff14;transform:translateY(-2px)}.nav-bar{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;border-bottom:1px solid var(--glass-border);background:#0f172acc;justify-content:space-between;align-items:center;padding:1.5rem 5%;display:flex;position:sticky;top:0}.logo{background:linear-gradient(90deg,#fff,#aaa);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:1.5rem;font-weight:800}.nav-links{gap:2rem;list-style:none;display:flex}.nav-links a{color:var(--text-muted);text-decoration:none;transition:color .2s}.nav-links a:hover{color:var(--text-main)}.container{padding:2rem 5%}form input{border:1px solid var(--glass-border);color:#fff;background:#ffffff0d;border-radius:.5rem;width:100%;margin-bottom:1rem;padding:.75rem}form input:focus{outline:2px solid var(--primary-color);background:#ffffff1a}.alert{color:var(--accent);background:#10b9811a;border:1px solid #10b98133;border-radius:.5rem;margin-bottom:1.5rem;padding:1rem}.alert-error{color:var(--danger);background:#ef44441a;border:1px solid #ef444433}.user-profile{border-left:1px solid var(--glass-border);align-items:center;gap:1.5rem;padding-left:2rem;display:flex}.username{color:var(--text-main);align-items:center;gap:.5rem;font-weight:600;display:flex}.logout-btn{background:#ef44441a;border:1px solid #ef444433;border-radius:.5rem;padding:.5rem 1rem;font-size:.9rem;font-weight:600;transition:all .2s;color:var(--danger)!important}.logout-btn:hover{background:var(--danger)!important;color:#fff!important}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-3px)}}.bounce{animation:2s ease-in-out infinite bounce}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}