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infinite}@keyframes btn-spin{to{transform:rotate(360deg)}}.btn-loading{pointer-events:none}.btn-primary{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;box-shadow:0 4px 14px #3b82f666,inset 0 1px #fff3}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,#2563eb,#1d4ed8);box-shadow:0 6px 20px #3b82f680,inset 0 1px #ffffff4d;transform:translateY(-2px)}.btn-primary:active:not(:disabled){box-shadow:0 2px 8px #3b82f64d,inset 0 1px #ffffff1a}.btn-success{background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;box-shadow:0 4px 14px #22c55e66,inset 0 1px #fff3}.btn-success:hover:not(:disabled){background:linear-gradient(135deg,#16a34a,#15803d);box-shadow:0 6px 20px #22c55e80,inset 0 1px #ffffff4d;transform:translateY(-2px)}.btn-success:active:not(:disabled){box-shadow:0 2px 8px #22c55e4d,inset 0 1px #ffffff1a}.btn-danger{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;box-shadow:0 4px 14px #ef444466,inset 0 1px #fff3}.btn-danger:hover:not(:disabled){background:linear-gradient(135deg,#dc2626,#b91c1c);box-shadow:0 6px 20px #ef444480,inset 0 1px #ffffff4d;transform:translateY(-2px)}.btn-danger:active:not(:disabled){box-shadow:0 2px 8px #ef44444d,inset 0 1px #ffffff1a}.btn-purple{background:linear-gradient(135deg,#a855f7,#9333ea);color:#fff;box-shadow:0 4px 14px #a855f766,inset 0 1px #fff3}.btn-purple:hover:not(:disabled){background:linear-gradient(135deg,#9333ea,#7e22ce);box-shadow:0 6px 20px #a855f780,inset 0 1px #ffffff4d;transform:translateY(-2px)}.btn-purple:active:not(:disabled){box-shadow:0 2px 8px #a855f74d,inset 0 1px #ffffff1a}.btn-outline{background:#3b82f61a;color:var(--accent-color);border:2px solid rgba(59,130,246,.4);box-shadow:0 2px 8px #3b82f61a,inset 0 1px #ffffff0d}.btn-outline:hover:not(:disabled){background:#3b82f633;border-color:var(--accent-color);box-shadow:0 4px 12px #3b82f633,inset 0 1px #ffffff1a;transform:translateY(-2px)}.btn-outline:active:not(:disabled){background:#3b82f626;box-shadow:0 2px 6px #3b82f626,inset 0 1px #ffffff0d}.btn-ghost{background:transparent;color:var(--text-primary);border:2px solid rgba(255,255,255,.2)}.btn-ghost:hover:not(:disabled){background:#ffffff0d;border-color:#ffffff4d;transform:translateY(-2px)}.btn-ghost:active:not(:disabled){background:#ffffff05}.btn-gradient{background:linear-gradient(135deg,#667eea,#764ba2,#f093fb);background-size:200% 200%;color:#fff;box-shadow:0 4px 14px #667eea66,inset 0 1px #fff3;animation:btn-gradient-shift 3s ease infinite}@keyframes btn-gradient-shift{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.btn-gradient:hover:not(:disabled){box-shadow:0 6px 20px #667eea80,inset 0 1px #ffffff4d;transform:translateY(-2px) scale(1.02)}.btn-gradient:active:not(:disabled){box-shadow:0 2px 8px #667eea4d,inset 0 1px #ffffff1a}@media(max-width:768px){.btn-sm{padding:.625rem 1rem;font-size:.875rem;min-height:40px}.btn-md{padding:.875rem 1.5rem;font-size:1rem;min-height:48px}.btn-lg{padding:1rem 2rem;font-size:1.125rem;min-height:52px}}.stylized-btn:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}@media(prefers-reduced-motion:reduce){.stylized-btn{transition:none}.stylized-btn:before{display:none}.btn-gradient{animation:none}.btn-spinner{animation-duration:1s}}