.btn{font-family:var(--font-body);font-size:var(--font-size-sm);letter-spacing:.03em;text-transform:uppercase;border-radius:var(--border-radius);color:var(--color-text-primary);cursor:pointer;box-shadow:var(--shadow-sm);transition:all var(--transition-fast);text-align:center;justify-content:center;align-items:center;gap:var(--space-1);background-color:#0000;border:1px solid #0000;padding:12px 28px;font-weight:600;display:inline-flex;position:relative;overflow:hidden}.btn:active{transform:scale(.97)}.btn-primary{background-color:var(--color-primary);color:var(--color-text-light);box-shadow:var(--shadow-md)}.btn-primary:hover{background-color:var(--color-secondary);color:var(--color-bg-dark);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.btn-secondary{background-color:var(--color-bg-accent);color:var(--color-text-primary);border:1px solid var(--color-border)}.btn-secondary:hover{background-color:var(--color-primary);color:var(--color-text-light);box-shadow:var(--shadow-md);transform:translateY(-2px)}.btn-outline{border:1.5px solid var(--color-primary);color:var(--color-text-primary);box-shadow:none;background-color:#0000}.btn-outline:hover{background-color:var(--color-primary);color:var(--color-text-light);box-shadow:var(--shadow-md);transform:translateY(-2px)}.btn-ghost{color:var(--color-text-secondary);box-shadow:none;padding:12px 20px}.btn-ghost:hover{background-color:var(--color-hover-overlay);color:var(--color-text-primary)}.btn-gradient{background:var(--gradient-premium);color:var(--color-text-light);box-shadow:var(--shadow-md);z-index:1;border:none;position:relative}[data-theme=theme-2] .btn-gradient,[data-theme=theme-5] .btn-gradient{background:var(--color-bg-dark)!important;color:var(--color-text-light)!important;border:1px solid var(--color-secondary)!important}.btn-gradient:before{content:"";background:var(--gradient-accent);z-index:-1;opacity:0;width:100%;height:100%;transition:opacity var(--transition-medium);position:absolute;top:0;left:0}.btn-gradient:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.btn-gradient:hover:before{opacity:1}.btn-gradient:hover{color:var(--color-bg-dark)}.btn-icon{border:1px solid var(--color-border);width:44px;height:44px;color:var(--color-text-primary);background-color:var(--color-bg-surface);box-shadow:var(--shadow-sm);border-radius:50%;justify-content:center;align-items:center;padding:0;display:inline-flex}.btn-icon:hover{background-color:var(--color-primary);color:var(--color-text-light);border-color:var(--color-primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.btn-fab{bottom:var(--space-4);right:var(--space-4);z-index:99;background-color:var(--color-primary);color:var(--color-text-light);box-shadow:var(--shadow-floating);border:1px solid var(--color-secondary);border-radius:50px;padding:16px 24px;position:fixed}.btn-fab:hover{background-color:var(--color-secondary);color:var(--color-bg-dark);box-shadow:var(--shadow-floating);transform:translateY(-4px)scale(1.03)}.btn-sticky-cta-container{display:none}@media (width<=767px){.btn-sticky-cta-container{padding:var(--space-2) var(--space-3);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--color-border);z-index:90;background:#ffffffd9;display:block;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -4px 16px #0000000d}.btn-sticky-cta{width:100%;box-shadow:var(--shadow-md)}}.btn-loading{background-color:var(--color-primary);color:var(--color-text-light);cursor:wait;opacity:.85}.btn-spinner{border:2px solid #ffffff4d;border-top-color:var(--color-text-light);border-radius:50%;width:16px;height:16px;animation:.8s linear infinite spin}[data-theme=theme-1] .btn-loading:hover .btn-spinner,[data-theme=theme-3] .btn-loading:hover .btn-spinner{border-top-color:var(--color-primary)}.btn-success{background-color:var(--color-primary);color:#fff;border-color:var(--color-primary);box-shadow:var(--shadow-md)}.btn-success:hover{background-color:var(--color-secondary);border-color:var(--color-secondary);transform:translateY(-2px)}.btn-disabled{color:#94a3b8;cursor:not-allowed;box-shadow:none;background-color:#e2e8f0;border-color:#e2e8f0;transform:none!important}.btn-disabled:hover{color:#94a3b8;background-color:#e2e8f0}.btn svg{stroke-width:2px;width:18px;height:18px;transition:transform var(--transition-fast)}.btn:hover svg{transform:translate(2px)}.btn-icon:hover svg{transform:none}