:root{--primary-gradient:linear-gradient(135deg,#667eea,#764ba2);--primary-color:#667eea;--primary-dark:#5568d3;--secondary-color:#764ba2;--accent-color:#6366f1;--bg-primary:linear-gradient(180deg,#0a0a0a,#1a1a2e);--bg-secondary:hsla(0,0%,100%,.03);--bg-card:hsla(0,0%,100%,.05);--bg-hover:hsla(0,0%,100%,.08);--text-primary:#fff;--text-secondary:#e5e7eb;--text-muted:#9ca3af;--text-disabled:#6b7280;--border-light:hsla(0,0%,100%,.1);--border-medium:hsla(0,0%,100%,.2);--border-accent:#6366f1;--success-bg:rgba(34,197,94,.1);--success-border:#22c55e;--success-text:#86efac;--error-bg:rgba(239,68,68,.1);--error-border:#ef4444;--error-text:#fca5a5;--warning-bg:rgba(251,146,60,.1);--warning-border:#fb923c;--warning-text:#fdba74;--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:2.5rem;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--shadow-sm:0 2px 8px rgba(0,0,0,.1);--shadow-md:0 4px 15px rgba(102,126,234,.3);--shadow-lg:0 6px 20px rgba(102,126,234,.4);--transition-fast:0.2s ease;--transition-base:0.3s ease;--transition-slow:0.4s ease}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--bg-primary);color:var(--text-primary)}button{font-family:inherit}.gradient-text{background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.btn-primary{background:var(--primary-gradient);color:var(--text-primary);border:none;border-radius:var(--radius-md);padding:.75rem 2rem;font-weight:500;cursor:pointer;transition:all var(--transition-base);box-shadow:var(--shadow-md)}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-secondary{background:var(--bg-card);color:var(--text-secondary);border:1px solid var(--border-medium);border-radius:var(--radius-md);padding:.75rem 2rem;font-weight:500;cursor:pointer;transition:all var(--transition-base)}.btn-secondary:hover:not(:disabled){background:var(--bg-hover);transform:translateY(-1px)}