:root{--bg-color:#0f172a;--panel-bg:#1e293bb3;--glass-border:#ffffff1a;--text-primary:#f8fafc;--text-secondary:#94a3b8;--accent:#3b82f6;--font-family:"Inter", system-ui, -apple-system, sans-serif;--card-bg:#ffffff08;--modal-bg:#0f172acc}[data-theme=light]{--bg-color:#f1f5f9;--panel-bg:#ffffffb3;--glass-border:#0000001a;--text-primary:#1e293b;--text-secondary:#64748b;--accent:#2563eb;--card-bg:#00000008;--modal-bg:#fffc}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);font-family:var(--font-family);background-image:radial-gradient(circle at 20% 30%,#3b82f60d 0%,#0000 50%),radial-gradient(circle at 80% 70%,#8b5cf60d 0%,#0000 50%);min-height:100vh;transition:background-color .3s,color .3s;overflow-x:hidden}.glass-panel{background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:1rem;box-shadow:0 4px 6px -1px #0000000d}.btn{cursor:pointer;border:none;border-radius:.5rem;align-items:center;gap:.5rem;padding:.6rem 1.2rem;font-size:14px;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px)}.btn-secondary{color:var(--text-primary);border:1px solid var(--glass-border);background:#ffffff0d}.btn-secondary:hover{background:#ffffff1a}[data-theme=light] .btn-secondary{background:#0000000d}[data-theme=light] .btn-secondary:hover{background:#0000001a}.auth-overlay{background:var(--modal-bg);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.auth-card{text-align:center;width:100%;max-width:400px;margin:1rem;padding:2.5rem}.input-field{background:var(--card-bg);border:1px solid var(--glass-border);width:100%;color:var(--text-primary);border-radius:.5rem;margin:1.5rem 0;padding:.8rem 1rem;font-size:1rem}.input-field:focus{outline:2px solid var(--accent);outline-offset:-2px}@media (width<=768px){.app-container{padding:1rem!important}header{flex-direction:column;gap:1rem;align-items:stretch!important;padding:1rem!important}header div:last-child{flex-wrap:wrap;justify-content:center}.columns-grid{flex-direction:column}.column-container{min-width:100%!important}}